2004-01-04 21:37:52 +01:00
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@c Copyright (C) 1988,1989,1992,1993,1994,1996,1998,1999,2000,2001,2002,2003,2004
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2003-04-23 18:11:34 +02:00
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@c Free Software Foundation, Inc.
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1996-09-24 00:41:16 +02:00
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@c This is part of the GCC manual.
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@c For copying conditions, see the file gcc.texi.
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@node C Extensions
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@chapter Extensions to the C Language Family
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@cindex extensions, C language
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@cindex C language extensions
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2001-06-13 00:40:00 +02:00
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@opindex pedantic
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c-tree.texi, [...]: Replace . at end of sentences preceded by a capital letter with @..
* doc/c-tree.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppinternals.texi, doc/extend.texi, doc/gcc.texi,
doc/gcov.texi, doc/install-old.texi, doc/install.texi,
doc/invoke.texi, doc/md.texi, doc/rtl.texi, doc/tm.texi: Replace
. at end of sentences preceded by a capital letter with @..
From-SVN: r43611
2001-06-27 17:04:16 +02:00
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GNU C provides several language features not found in ISO standard C@.
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c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
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(The @option{-pedantic} option directs GCC to print a warning message if
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1996-09-24 00:41:16 +02:00
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any of these features is used.) To test for the availability of these
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features in conditional compilation, check for a predefined macro
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c-tree.texi, [...]: Replace . at end of sentences preceded by a capital letter with @..
* doc/c-tree.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppinternals.texi, doc/extend.texi, doc/gcc.texi,
doc/gcov.texi, doc/install-old.texi, doc/install.texi,
doc/invoke.texi, doc/md.texi, doc/rtl.texi, doc/tm.texi: Replace
. at end of sentences preceded by a capital letter with @..
From-SVN: r43611
2001-06-27 17:04:16 +02:00
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@code{__GNUC__}, which is always defined under GCC@.
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1996-09-24 00:41:16 +02:00
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c-tree.texi, [...]: Replace . at end of sentences preceded by a capital letter with @..
* doc/c-tree.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppinternals.texi, doc/extend.texi, doc/gcc.texi,
doc/gcov.texi, doc/install-old.texi, doc/install.texi,
doc/invoke.texi, doc/md.texi, doc/rtl.texi, doc/tm.texi: Replace
. at end of sentences preceded by a capital letter with @..
From-SVN: r43611
2001-06-27 17:04:16 +02:00
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These extensions are available in C and Objective-C@. Most of them are
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1996-09-24 00:41:16 +02:00
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also available in C++. @xref{C++ Extensions,,Extensions to the
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C++ Language}, for extensions that apply @emph{only} to C++.
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2001-05-21 01:21:59 +02:00
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Some features that are in ISO C99 but not C89 or C++ are also, as
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extensions, accepted by GCC in C89 mode and in C++.
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2001-01-12 19:51:27 +01:00
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1996-09-24 00:41:16 +02:00
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@menu
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* Statement Exprs:: Putting statements and declarations inside expressions.
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* c-decl.c (named_labels, shadowed_labels, label_level_chain)
(push_label_level, pop_label_level): Kill.
(struct binding_level): Rename level_chain to outer.
Add outer_function field. Change parm_flag, function_body,
keep, keep_if_subblocks to 1-bit bitfields of type bool.
(current_function_level): New variable.
(keep_next_level_flag, keep_next_if_subblocks): Change type to bool.
(keep_next_level, declare_parm_level, warn_if_shadowing):
Update to match.
(struct language_function): Kill named_labels, shadowed_labels fields.
(c_init_decl_processing, start_function, c_push__function_context)
(c_pop_function_context): No need to muck with named_labels nor
shadowed_labels.
(make_binding_level): No need to clear the structure here.
(pop_binding_level): Always operate on current_binding_level.
Update current_function_level if necessary.
(pushlevel): Don't clear named_labels. Update current_function_level
if necessary. Use "true" and "false" where appropriate.
(poplevel): Diagnose labels defined but not used, or vice
versa, and clear out label-meanings leaving scope, while
walking down the decls list, for all binding levels.
Handle LABEL_DECLs appearing in the shadowed list.
pop_binding_level takes no arguments.
(pushdecl_function_level): Use current_function_level.
(make_label, bind_label): New static functions.
(declare_label): New exported function.
(lookup_label, define_label): Rewritten for new data structure.
(shadow_label): Kill.
* c-tree.h: Prototype declare_label; don't prototype
push_label_level, pop_label_level, nor shadow_label.
* c-parse.in: Remove all calls to push_label_level and
pop_label_level. Use declare_label for __label__ decls.
* doc/extend.texi: Clarify that __label__ can be used to
declare labels with local scope in any nested block, not
just statement expressions. Cross-reference nested functions
section from local labels section.
testsuite:
* gcc.dg/noncompile/label-1.c: New comprehensive test case for
diagnostics of ill-formed constructs involving labels.
* gcc.dg/noncompile/label-lineno-1.c: Add error regexp for
the new 'previously defined here' message.
From-SVN: r69597
2003-07-20 01:32:55 +02:00
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* Local Labels:: Labels local to a block.
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1996-09-24 00:41:16 +02:00
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* Labels as Values:: Getting pointers to labels, and computed gotos.
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* Nested Functions:: As in Algol and Pascal, lexical scoping of functions.
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* Constructing Calls:: Dispatching a call to another function.
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* Typeof:: @code{typeof}: referring to the type of an expression.
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* Conditionals:: Omitting the middle operand of a @samp{?:} expression.
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* Long Long:: Double-word integers---@code{long long int}.
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* Complex:: Data types for complex numbers.
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1998-12-01 22:05:17 +01:00
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* Hex Floats:: Hexadecimal floating-point constants.
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1996-09-24 00:41:16 +02:00
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* Zero Length:: Zero-length arrays.
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* Variable Length:: Arrays whose length is computed at run time.
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2003-04-12 03:43:11 +02:00
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* Empty Structures:: Structures with no members.
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2001-01-13 17:59:42 +01:00
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* Variadic Macros:: Macros with a variable number of arguments.
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* Escaped Newlines:: Slightly looser rules for escaped newlines.
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1996-09-24 00:41:16 +02:00
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* Subscripting:: Any array can be subscripted, even if not an lvalue.
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* Pointer Arith:: Arithmetic on @code{void}-pointers and function pointers.
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* Initializers:: Non-constant initializers.
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2001-05-21 01:21:59 +02:00
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* Compound Literals:: Compound literals give structures, unions
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1996-09-24 00:41:16 +02:00
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or arrays as values.
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2001-05-21 01:21:59 +02:00
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* Designated Inits:: Labeling elements of initializers.
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1996-09-24 00:41:16 +02:00
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* Cast to Union:: Casting to union type from any member of the union.
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* Case Ranges:: `case 1 ... 9' and such.
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2001-05-21 01:21:59 +02:00
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* Mixed Declarations:: Mixing declarations and code.
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1996-09-24 00:41:16 +02:00
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* Function Attributes:: Declaring that functions have no side effects,
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or that they can never return.
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2001-01-27 22:29:53 +01:00
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* Attribute Syntax:: Formal syntax for attributes.
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1996-09-24 00:41:16 +02:00
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* Function Prototypes:: Prototype declarations and old-style definitions.
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* C++ Comments:: C++ comments are recognized.
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* Dollar Signs:: Dollar sign is allowed in identifiers.
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* Character Escapes:: @samp{\e} stands for the character @key{ESC}.
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* Variable Attributes:: Specifying attributes of variables.
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* Type Attributes:: Specifying attributes of types.
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* Alignment:: Inquiring about the alignment of a type or variable.
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* Inline:: Defining inline functions (as fast as macros).
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* Extended Asm:: Assembler instructions with C expressions as operands.
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(With them you can define ``built-in'' functions.)
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* Constraints:: Constraints for asm operands
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* Asm Labels:: Specifying the assembler name to use for a C symbol.
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* Explicit Reg Vars:: Defining variables residing in specified registers.
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* Alternate Keywords:: @code{__const__}, @code{__asm__}, etc., for header files.
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* Incomplete Enums:: @code{enum foo;}, with details to follow.
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* Function Names:: Printable strings which are the name of the current
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function.
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* Return Address:: Getting the return or frame address of a function.
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2001-09-29 18:33:20 +02:00
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* Vector Extensions:: Using vector instructions through built-in functions.
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2004-06-01 17:12:23 +02:00
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* Offsetof:: Special syntax for implementing @code{offsetof}.
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1999-09-07 07:49:18 +02:00
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* Other Builtins:: Other built-in functions.
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2002-01-14 21:09:52 +01:00
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* Target Builtins:: Built-in functions specific to particular targets.
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2004-07-19 16:48:09 +02:00
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* Target Format Checks:: Format checks specific to particular targets.
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2001-06-28 21:55:53 +02:00
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* Pragmas:: Pragmas accepted by GCC.
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Separate user and internals manuals.
* Makefile.in (info, $(docdir)/gcc.info, dvi, gcc.dvi): Update
dependencies.
($(docdir)/gccint.info, gccint.dvi): New targets.
(maintainer-clean, install-info, uninstall): Update.
* doc/.cvsignore: Add gccint.info*.
* doc/include/gcc-common.texi: New file.
* doc/gcc.texi: Use it. Adjust to be a user-only manual. Put
copyright notice in a macro. Don't include ISBN unless FSFPRINT
is defined.
* doc/gccint.texi: New file.
* doc/configfiles.texi, doc/extend.texi, doc/invoke.texi,
doc/md.texi, doc/passes.texi, doc/tm.texi, doc/trouble.texi:
Update for separate user and internals manuals.
f:
* g77.texi, invoke.texi: Update links to GCC manual.
java:
* gcj.texi: Update link to GCC manual.
From-SVN: r48119
2001-12-17 20:20:05 +01:00
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* Unnamed Fields:: Unnamed struct/union fields within structs/unions.
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2002-05-22 03:11:29 +02:00
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* Thread-Local:: Per-thread variables.
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1996-09-24 00:41:16 +02:00
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@end menu
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@node Statement Exprs
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@section Statements and Declarations in Expressions
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@cindex statements inside expressions
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@cindex declarations inside expressions
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@cindex expressions containing statements
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@cindex macros, statements in expressions
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@c the above section title wrapped and causes an underfull hbox.. i
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@c changed it from "within" to "in". --mew 4feb93
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A compound statement enclosed in parentheses may appear as an expression
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c-tree.texi, [...]: Replace . at end of sentences preceded by a capital letter with @..
* doc/c-tree.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppinternals.texi, doc/extend.texi, doc/gcc.texi,
doc/gcov.texi, doc/install-old.texi, doc/install.texi,
doc/invoke.texi, doc/md.texi, doc/rtl.texi, doc/tm.texi: Replace
. at end of sentences preceded by a capital letter with @..
From-SVN: r43611
2001-06-27 17:04:16 +02:00
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in GNU C@. This allows you to use loops, switches, and local variables
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1996-09-24 00:41:16 +02:00
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within an expression.
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Recall that a compound statement is a sequence of statements surrounded
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by braces; in this construct, parentheses go around the braces. For
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example:
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c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
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@smallexample
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1996-09-24 00:41:16 +02:00
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(@{ int y = foo (); int z;
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if (y > 0) z = y;
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else z = - y;
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z; @})
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c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
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@end smallexample
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1996-09-24 00:41:16 +02:00
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@noindent
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is a valid (though slightly more complex than necessary) expression
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for the absolute value of @code{foo ()}.
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The last thing in the compound statement should be an expression
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followed by a semicolon; the value of this subexpression serves as the
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value of the entire construct. (If you use some other kind of statement
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last within the braces, the construct has type @code{void}, and thus
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effectively no value.)
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This feature is especially useful in making macro definitions ``safe'' (so
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that they evaluate each operand exactly once). For example, the
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``maximum'' function is commonly defined as a macro in standard C as
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follows:
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c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
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@smallexample
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1996-09-24 00:41:16 +02:00
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#define max(a,b) ((a) > (b) ? (a) : (b))
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c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
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@end smallexample
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1996-09-24 00:41:16 +02:00
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@noindent
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@cindex side effects, macro argument
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But this definition computes either @var{a} or @var{b} twice, with bad
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results if the operand has side effects. In GNU C, if you know the
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bugreport.texi, [...]: Avoid some first-person references and patronizing comments.
* doc/bugreport.texi, doc/configterms.texi, doc/contrib.texi,
doc/contribute.texi, doc/cpp.texi, doc/cppinternals.texi,
doc/extend.texi, doc/install.texi, doc/invoke.texi, doc/md.texi,
doc/portability.texi, doc/tree-ssa.texi, doc/trouble.texi: Avoid
some first-person references and patronizing comments. Based on
printed manual.
* doc/invoke.texi: Don't reference fortran@gnu.org.
* doc/trouble.texi (Warning when a non-void function value is
ignored): Rewrite. From Russ Allbery and Chris Devers.
From-SVN: r84034
2004-07-03 01:57:12 +02:00
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type of the operands (here taken as @code{int}), you can define
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1996-09-24 00:41:16 +02:00
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the macro safely as follows:
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c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
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@smallexample
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1996-09-24 00:41:16 +02:00
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#define maxint(a,b) \
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(@{int _a = (a), _b = (b); _a > _b ? _a : _b; @})
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c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
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@end smallexample
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1996-09-24 00:41:16 +02:00
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Embedded statements are not allowed in constant expressions, such as
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c-tree.texi, [...]: Fix spelling and typos.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/install.texi, doc/invoke.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi: Fix spelling and typos.
Consistently use "built-in" and "bit-field". Minor logical markup
improvements.
* doc/gcc.1: Regenerate.
From-SVN: r43383
2001-06-15 00:51:18 +02:00
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the value of an enumeration constant, the width of a bit-field, or
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1996-09-24 00:41:16 +02:00
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the initial value of a static variable.
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If you don't know the type of the operand, you can still do this, but you
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2002-10-09 23:27:38 +02:00
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must use @code{typeof} (@pxref{Typeof}).
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1996-09-24 00:41:16 +02:00
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2003-08-01 11:34:09 +02:00
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In G++, the result value of a statement expression undergoes array and
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function pointer decay, and is returned by value to the enclosing
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c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
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expression. For instance, if @code{A} is a class, then
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2000-08-04 01:07:43 +02:00
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2003-08-01 11:34:09 +02:00
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@smallexample
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A a;
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2000-08-04 01:07:43 +02:00
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2003-08-01 11:34:09 +02:00
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(@{a;@}).Foo ()
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@end smallexample
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2000-08-04 01:07:43 +02:00
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@noindent
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2003-08-01 11:34:09 +02:00
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will construct a temporary @code{A} object to hold the result of the
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statement expression, and that will be used to invoke @code{Foo}.
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Therefore the @code{this} pointer observed by @code{Foo} will not be the
|
|
|
|
address of @code{a}.
|
|
|
|
|
|
|
|
Any temporaries created within a statement within a statement expression
|
|
|
|
will be destroyed at the statement's end. This makes statement
|
|
|
|
expressions inside macros slightly different from function calls. In
|
|
|
|
the latter case temporaries introduced during argument evaluation will
|
|
|
|
be destroyed at the end of the statement that includes the function
|
|
|
|
call. In the statement expression case they will be destroyed during
|
|
|
|
the statement expression. For instance,
|
2000-08-04 01:07:43 +02:00
|
|
|
|
2003-08-01 11:34:09 +02:00
|
|
|
@smallexample
|
|
|
|
#define macro(a) (@{__typeof__(a) b = (a); b + 3; @})
|
|
|
|
template<typename T> T function(T a) @{ T b = a; return b + 3; @}
|
|
|
|
|
|
|
|
void foo ()
|
|
|
|
@{
|
|
|
|
macro (X ());
|
|
|
|
function (X ());
|
|
|
|
@}
|
|
|
|
@end smallexample
|
2000-08-04 01:07:43 +02:00
|
|
|
|
|
|
|
@noindent
|
2003-08-01 11:34:09 +02:00
|
|
|
will have different places where temporaries are destroyed. For the
|
|
|
|
@code{macro} case, the temporary @code{X} will be destroyed just after
|
|
|
|
the initialization of @code{b}. In the @code{function} case that
|
|
|
|
temporary will be destroyed when the function returns.
|
2000-08-04 01:07:43 +02:00
|
|
|
|
|
|
|
These considerations mean that it is probably a bad idea to use
|
|
|
|
statement-expressions of this form in header files that are designed to
|
2000-08-04 22:24:47 +02:00
|
|
|
work with C++. (Note that some versions of the GNU C Library contained
|
|
|
|
header files using statement-expression that lead to precisely this
|
|
|
|
bug.)
|
2000-08-04 01:07:43 +02:00
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@node Local Labels
|
|
|
|
@section Locally Declared Labels
|
|
|
|
@cindex local labels
|
|
|
|
@cindex macros, local labels
|
|
|
|
|
* c-decl.c (named_labels, shadowed_labels, label_level_chain)
(push_label_level, pop_label_level): Kill.
(struct binding_level): Rename level_chain to outer.
Add outer_function field. Change parm_flag, function_body,
keep, keep_if_subblocks to 1-bit bitfields of type bool.
(current_function_level): New variable.
(keep_next_level_flag, keep_next_if_subblocks): Change type to bool.
(keep_next_level, declare_parm_level, warn_if_shadowing):
Update to match.
(struct language_function): Kill named_labels, shadowed_labels fields.
(c_init_decl_processing, start_function, c_push__function_context)
(c_pop_function_context): No need to muck with named_labels nor
shadowed_labels.
(make_binding_level): No need to clear the structure here.
(pop_binding_level): Always operate on current_binding_level.
Update current_function_level if necessary.
(pushlevel): Don't clear named_labels. Update current_function_level
if necessary. Use "true" and "false" where appropriate.
(poplevel): Diagnose labels defined but not used, or vice
versa, and clear out label-meanings leaving scope, while
walking down the decls list, for all binding levels.
Handle LABEL_DECLs appearing in the shadowed list.
pop_binding_level takes no arguments.
(pushdecl_function_level): Use current_function_level.
(make_label, bind_label): New static functions.
(declare_label): New exported function.
(lookup_label, define_label): Rewritten for new data structure.
(shadow_label): Kill.
* c-tree.h: Prototype declare_label; don't prototype
push_label_level, pop_label_level, nor shadow_label.
* c-parse.in: Remove all calls to push_label_level and
pop_label_level. Use declare_label for __label__ decls.
* doc/extend.texi: Clarify that __label__ can be used to
declare labels with local scope in any nested block, not
just statement expressions. Cross-reference nested functions
section from local labels section.
testsuite:
* gcc.dg/noncompile/label-1.c: New comprehensive test case for
diagnostics of ill-formed constructs involving labels.
* gcc.dg/noncompile/label-lineno-1.c: Add error regexp for
the new 'previously defined here' message.
From-SVN: r69597
2003-07-20 01:32:55 +02:00
|
|
|
GCC allows you to declare @dfn{local labels} in any nested block
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
scope. A local label is just like an ordinary label, but you can
|
* c-decl.c (named_labels, shadowed_labels, label_level_chain)
(push_label_level, pop_label_level): Kill.
(struct binding_level): Rename level_chain to outer.
Add outer_function field. Change parm_flag, function_body,
keep, keep_if_subblocks to 1-bit bitfields of type bool.
(current_function_level): New variable.
(keep_next_level_flag, keep_next_if_subblocks): Change type to bool.
(keep_next_level, declare_parm_level, warn_if_shadowing):
Update to match.
(struct language_function): Kill named_labels, shadowed_labels fields.
(c_init_decl_processing, start_function, c_push__function_context)
(c_pop_function_context): No need to muck with named_labels nor
shadowed_labels.
(make_binding_level): No need to clear the structure here.
(pop_binding_level): Always operate on current_binding_level.
Update current_function_level if necessary.
(pushlevel): Don't clear named_labels. Update current_function_level
if necessary. Use "true" and "false" where appropriate.
(poplevel): Diagnose labels defined but not used, or vice
versa, and clear out label-meanings leaving scope, while
walking down the decls list, for all binding levels.
Handle LABEL_DECLs appearing in the shadowed list.
pop_binding_level takes no arguments.
(pushdecl_function_level): Use current_function_level.
(make_label, bind_label): New static functions.
(declare_label): New exported function.
(lookup_label, define_label): Rewritten for new data structure.
(shadow_label): Kill.
* c-tree.h: Prototype declare_label; don't prototype
push_label_level, pop_label_level, nor shadow_label.
* c-parse.in: Remove all calls to push_label_level and
pop_label_level. Use declare_label for __label__ decls.
* doc/extend.texi: Clarify that __label__ can be used to
declare labels with local scope in any nested block, not
just statement expressions. Cross-reference nested functions
section from local labels section.
testsuite:
* gcc.dg/noncompile/label-1.c: New comprehensive test case for
diagnostics of ill-formed constructs involving labels.
* gcc.dg/noncompile/label-lineno-1.c: Add error regexp for
the new 'previously defined here' message.
From-SVN: r69597
2003-07-20 01:32:55 +02:00
|
|
|
only reference it (with a @code{goto} statement, or by taking its
|
c-tree.texi, [...]: Remove trailing whitespace.
* doc/c-tree.texi, doc/cpp.texi, doc/extend.texi,
doc/frontends.texi, doc/gcov.texi, doc/gty.texi, doc/install.texi,
doc/invoke.texi, doc/libgcc.texi, doc/md.texi, doc/rtl.texi,
doc/sourcebuild.texi, doc/standards.texi, doc/tm.texi,
doc/trouble.texi: Remove trailing whitespace.
From-SVN: r76098
2004-01-18 12:57:17 +01:00
|
|
|
address) within the block in which it was declared.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
A local label declaration looks like this:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
__label__ @var{label};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
or
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2002-06-24 19:21:04 +02:00
|
|
|
__label__ @var{label1}, @var{label2}, /* @r{@dots{}} */;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
* c-decl.c (named_labels, shadowed_labels, label_level_chain)
(push_label_level, pop_label_level): Kill.
(struct binding_level): Rename level_chain to outer.
Add outer_function field. Change parm_flag, function_body,
keep, keep_if_subblocks to 1-bit bitfields of type bool.
(current_function_level): New variable.
(keep_next_level_flag, keep_next_if_subblocks): Change type to bool.
(keep_next_level, declare_parm_level, warn_if_shadowing):
Update to match.
(struct language_function): Kill named_labels, shadowed_labels fields.
(c_init_decl_processing, start_function, c_push__function_context)
(c_pop_function_context): No need to muck with named_labels nor
shadowed_labels.
(make_binding_level): No need to clear the structure here.
(pop_binding_level): Always operate on current_binding_level.
Update current_function_level if necessary.
(pushlevel): Don't clear named_labels. Update current_function_level
if necessary. Use "true" and "false" where appropriate.
(poplevel): Diagnose labels defined but not used, or vice
versa, and clear out label-meanings leaving scope, while
walking down the decls list, for all binding levels.
Handle LABEL_DECLs appearing in the shadowed list.
pop_binding_level takes no arguments.
(pushdecl_function_level): Use current_function_level.
(make_label, bind_label): New static functions.
(declare_label): New exported function.
(lookup_label, define_label): Rewritten for new data structure.
(shadow_label): Kill.
* c-tree.h: Prototype declare_label; don't prototype
push_label_level, pop_label_level, nor shadow_label.
* c-parse.in: Remove all calls to push_label_level and
pop_label_level. Use declare_label for __label__ decls.
* doc/extend.texi: Clarify that __label__ can be used to
declare labels with local scope in any nested block, not
just statement expressions. Cross-reference nested functions
section from local labels section.
testsuite:
* gcc.dg/noncompile/label-1.c: New comprehensive test case for
diagnostics of ill-formed constructs involving labels.
* gcc.dg/noncompile/label-lineno-1.c: Add error regexp for
the new 'previously defined here' message.
From-SVN: r69597
2003-07-20 01:32:55 +02:00
|
|
|
Local label declarations must come at the beginning of the block,
|
|
|
|
before any ordinary declarations or statements.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
The label declaration defines the label @emph{name}, but does not define
|
|
|
|
the label itself. You must do this in the usual way, with
|
|
|
|
@code{@var{label}:}, within the statements of the statement expression.
|
|
|
|
|
* c-decl.c (named_labels, shadowed_labels, label_level_chain)
(push_label_level, pop_label_level): Kill.
(struct binding_level): Rename level_chain to outer.
Add outer_function field. Change parm_flag, function_body,
keep, keep_if_subblocks to 1-bit bitfields of type bool.
(current_function_level): New variable.
(keep_next_level_flag, keep_next_if_subblocks): Change type to bool.
(keep_next_level, declare_parm_level, warn_if_shadowing):
Update to match.
(struct language_function): Kill named_labels, shadowed_labels fields.
(c_init_decl_processing, start_function, c_push__function_context)
(c_pop_function_context): No need to muck with named_labels nor
shadowed_labels.
(make_binding_level): No need to clear the structure here.
(pop_binding_level): Always operate on current_binding_level.
Update current_function_level if necessary.
(pushlevel): Don't clear named_labels. Update current_function_level
if necessary. Use "true" and "false" where appropriate.
(poplevel): Diagnose labels defined but not used, or vice
versa, and clear out label-meanings leaving scope, while
walking down the decls list, for all binding levels.
Handle LABEL_DECLs appearing in the shadowed list.
pop_binding_level takes no arguments.
(pushdecl_function_level): Use current_function_level.
(make_label, bind_label): New static functions.
(declare_label): New exported function.
(lookup_label, define_label): Rewritten for new data structure.
(shadow_label): Kill.
* c-tree.h: Prototype declare_label; don't prototype
push_label_level, pop_label_level, nor shadow_label.
* c-parse.in: Remove all calls to push_label_level and
pop_label_level. Use declare_label for __label__ decls.
* doc/extend.texi: Clarify that __label__ can be used to
declare labels with local scope in any nested block, not
just statement expressions. Cross-reference nested functions
section from local labels section.
testsuite:
* gcc.dg/noncompile/label-1.c: New comprehensive test case for
diagnostics of ill-formed constructs involving labels.
* gcc.dg/noncompile/label-lineno-1.c: Add error regexp for
the new 'previously defined here' message.
From-SVN: r69597
2003-07-20 01:32:55 +02:00
|
|
|
The local label feature is useful for complex macros. If a macro
|
|
|
|
contains nested loops, a @code{goto} can be useful for breaking out of
|
|
|
|
them. However, an ordinary label whose scope is the whole function
|
|
|
|
cannot be used: if the macro can be expanded several times in one
|
|
|
|
function, the label will be multiply defined in that function. A
|
|
|
|
local label avoids this problem. For example:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
* c-decl.c (named_labels, shadowed_labels, label_level_chain)
(push_label_level, pop_label_level): Kill.
(struct binding_level): Rename level_chain to outer.
Add outer_function field. Change parm_flag, function_body,
keep, keep_if_subblocks to 1-bit bitfields of type bool.
(current_function_level): New variable.
(keep_next_level_flag, keep_next_if_subblocks): Change type to bool.
(keep_next_level, declare_parm_level, warn_if_shadowing):
Update to match.
(struct language_function): Kill named_labels, shadowed_labels fields.
(c_init_decl_processing, start_function, c_push__function_context)
(c_pop_function_context): No need to muck with named_labels nor
shadowed_labels.
(make_binding_level): No need to clear the structure here.
(pop_binding_level): Always operate on current_binding_level.
Update current_function_level if necessary.
(pushlevel): Don't clear named_labels. Update current_function_level
if necessary. Use "true" and "false" where appropriate.
(poplevel): Diagnose labels defined but not used, or vice
versa, and clear out label-meanings leaving scope, while
walking down the decls list, for all binding levels.
Handle LABEL_DECLs appearing in the shadowed list.
pop_binding_level takes no arguments.
(pushdecl_function_level): Use current_function_level.
(make_label, bind_label): New static functions.
(declare_label): New exported function.
(lookup_label, define_label): Rewritten for new data structure.
(shadow_label): Kill.
* c-tree.h: Prototype declare_label; don't prototype
push_label_level, pop_label_level, nor shadow_label.
* c-parse.in: Remove all calls to push_label_level and
pop_label_level. Use declare_label for __label__ decls.
* doc/extend.texi: Clarify that __label__ can be used to
declare labels with local scope in any nested block, not
just statement expressions. Cross-reference nested functions
section from local labels section.
testsuite:
* gcc.dg/noncompile/label-1.c: New comprehensive test case for
diagnostics of ill-formed constructs involving labels.
* gcc.dg/noncompile/label-lineno-1.c: Add error regexp for
the new 'previously defined here' message.
From-SVN: r69597
2003-07-20 01:32:55 +02:00
|
|
|
#define SEARCH(value, array, target) \
|
|
|
|
do @{ \
|
|
|
|
__label__ found; \
|
|
|
|
typeof (target) _SEARCH_target = (target); \
|
|
|
|
typeof (*(array)) *_SEARCH_array = (array); \
|
|
|
|
int i, j; \
|
|
|
|
int value; \
|
|
|
|
for (i = 0; i < max; i++) \
|
|
|
|
for (j = 0; j < max; j++) \
|
|
|
|
if (_SEARCH_array[i][j] == _SEARCH_target) \
|
|
|
|
@{ (value) = i; goto found; @} \
|
|
|
|
(value) = -1; \
|
|
|
|
found:; \
|
|
|
|
@} while (0)
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
* c-decl.c (named_labels, shadowed_labels, label_level_chain)
(push_label_level, pop_label_level): Kill.
(struct binding_level): Rename level_chain to outer.
Add outer_function field. Change parm_flag, function_body,
keep, keep_if_subblocks to 1-bit bitfields of type bool.
(current_function_level): New variable.
(keep_next_level_flag, keep_next_if_subblocks): Change type to bool.
(keep_next_level, declare_parm_level, warn_if_shadowing):
Update to match.
(struct language_function): Kill named_labels, shadowed_labels fields.
(c_init_decl_processing, start_function, c_push__function_context)
(c_pop_function_context): No need to muck with named_labels nor
shadowed_labels.
(make_binding_level): No need to clear the structure here.
(pop_binding_level): Always operate on current_binding_level.
Update current_function_level if necessary.
(pushlevel): Don't clear named_labels. Update current_function_level
if necessary. Use "true" and "false" where appropriate.
(poplevel): Diagnose labels defined but not used, or vice
versa, and clear out label-meanings leaving scope, while
walking down the decls list, for all binding levels.
Handle LABEL_DECLs appearing in the shadowed list.
pop_binding_level takes no arguments.
(pushdecl_function_level): Use current_function_level.
(make_label, bind_label): New static functions.
(declare_label): New exported function.
(lookup_label, define_label): Rewritten for new data structure.
(shadow_label): Kill.
* c-tree.h: Prototype declare_label; don't prototype
push_label_level, pop_label_level, nor shadow_label.
* c-parse.in: Remove all calls to push_label_level and
pop_label_level. Use declare_label for __label__ decls.
* doc/extend.texi: Clarify that __label__ can be used to
declare labels with local scope in any nested block, not
just statement expressions. Cross-reference nested functions
section from local labels section.
testsuite:
* gcc.dg/noncompile/label-1.c: New comprehensive test case for
diagnostics of ill-formed constructs involving labels.
* gcc.dg/noncompile/label-lineno-1.c: Add error regexp for
the new 'previously defined here' message.
From-SVN: r69597
2003-07-20 01:32:55 +02:00
|
|
|
|
|
|
|
This could also be written using a statement-expression:
|
1996-09-24 00:41:16 +02:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
#define SEARCH(array, target) \
|
2001-05-31 06:27:52 +02:00
|
|
|
(@{ \
|
1996-09-24 00:41:16 +02:00
|
|
|
__label__ found; \
|
|
|
|
typeof (target) _SEARCH_target = (target); \
|
|
|
|
typeof (*(array)) *_SEARCH_array = (array); \
|
|
|
|
int i, j; \
|
|
|
|
int value; \
|
|
|
|
for (i = 0; i < max; i++) \
|
|
|
|
for (j = 0; j < max; j++) \
|
|
|
|
if (_SEARCH_array[i][j] == _SEARCH_target) \
|
2001-05-31 06:27:52 +02:00
|
|
|
@{ value = i; goto found; @} \
|
1996-09-24 00:41:16 +02:00
|
|
|
value = -1; \
|
|
|
|
found: \
|
|
|
|
value; \
|
|
|
|
@})
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
* c-decl.c (named_labels, shadowed_labels, label_level_chain)
(push_label_level, pop_label_level): Kill.
(struct binding_level): Rename level_chain to outer.
Add outer_function field. Change parm_flag, function_body,
keep, keep_if_subblocks to 1-bit bitfields of type bool.
(current_function_level): New variable.
(keep_next_level_flag, keep_next_if_subblocks): Change type to bool.
(keep_next_level, declare_parm_level, warn_if_shadowing):
Update to match.
(struct language_function): Kill named_labels, shadowed_labels fields.
(c_init_decl_processing, start_function, c_push__function_context)
(c_pop_function_context): No need to muck with named_labels nor
shadowed_labels.
(make_binding_level): No need to clear the structure here.
(pop_binding_level): Always operate on current_binding_level.
Update current_function_level if necessary.
(pushlevel): Don't clear named_labels. Update current_function_level
if necessary. Use "true" and "false" where appropriate.
(poplevel): Diagnose labels defined but not used, or vice
versa, and clear out label-meanings leaving scope, while
walking down the decls list, for all binding levels.
Handle LABEL_DECLs appearing in the shadowed list.
pop_binding_level takes no arguments.
(pushdecl_function_level): Use current_function_level.
(make_label, bind_label): New static functions.
(declare_label): New exported function.
(lookup_label, define_label): Rewritten for new data structure.
(shadow_label): Kill.
* c-tree.h: Prototype declare_label; don't prototype
push_label_level, pop_label_level, nor shadow_label.
* c-parse.in: Remove all calls to push_label_level and
pop_label_level. Use declare_label for __label__ decls.
* doc/extend.texi: Clarify that __label__ can be used to
declare labels with local scope in any nested block, not
just statement expressions. Cross-reference nested functions
section from local labels section.
testsuite:
* gcc.dg/noncompile/label-1.c: New comprehensive test case for
diagnostics of ill-formed constructs involving labels.
* gcc.dg/noncompile/label-lineno-1.c: Add error regexp for
the new 'previously defined here' message.
From-SVN: r69597
2003-07-20 01:32:55 +02:00
|
|
|
Local label declarations also make the labels they declare visible to
|
|
|
|
nested functions, if there are any. @xref{Nested Functions}, for details.
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@node Labels as Values
|
|
|
|
@section Labels as Values
|
|
|
|
@cindex labels as values
|
|
|
|
@cindex computed gotos
|
|
|
|
@cindex goto with computed label
|
|
|
|
@cindex address of a label
|
|
|
|
|
|
|
|
You can get the address of a label defined in the current function
|
|
|
|
(or a containing function) with the unary operator @samp{&&}. The
|
|
|
|
value has type @code{void *}. This value is a constant and can be used
|
|
|
|
wherever a constant of that type is valid. For example:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
void *ptr;
|
2002-06-24 19:21:04 +02:00
|
|
|
/* @r{@dots{}} */
|
1996-09-24 00:41:16 +02:00
|
|
|
ptr = &&foo;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
To use these values, you need to be able to jump to one. This is done
|
|
|
|
with the computed goto statement@footnote{The analogous feature in
|
|
|
|
Fortran is called an assigned goto, but that name seems inappropriate in
|
|
|
|
C, where one can do more than simply store label addresses in label
|
|
|
|
variables.}, @code{goto *@var{exp};}. For example,
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
goto *ptr;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
Any expression of type @code{void *} is allowed.
|
|
|
|
|
|
|
|
One way of using these constants is in initializing a static array that
|
|
|
|
will serve as a jump table:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
static void *array[] = @{ &&foo, &&bar, &&hack @};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
Then you can select a label with indexing, like this:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
goto *array[i];
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
Note that this does not check whether the subscript is in bounds---array
|
|
|
|
indexing in C never does that.
|
|
|
|
|
|
|
|
Such an array of label values serves a purpose much like that of the
|
|
|
|
@code{switch} statement. The @code{switch} statement is cleaner, so
|
|
|
|
use that rather than an array unless the problem does not fit a
|
|
|
|
@code{switch} statement very well.
|
|
|
|
|
|
|
|
Another use of label values is in an interpreter for threaded code.
|
|
|
|
The labels within the interpreter function can be stored in the
|
|
|
|
threaded code for super-fast dispatching.
|
|
|
|
|
2001-04-28 13:35:04 +02:00
|
|
|
You may not use this mechanism to jump to code in a different function.
|
1999-07-31 03:26:09 +02:00
|
|
|
If you do that, totally unpredictable things will happen. The best way to
|
1996-09-24 00:41:16 +02:00
|
|
|
avoid this is to store the label address only in automatic variables and
|
|
|
|
never pass it as an argument.
|
|
|
|
|
1999-07-31 03:26:09 +02:00
|
|
|
An alternate way to write the above example is
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2001-05-31 06:27:52 +02:00
|
|
|
static const int array[] = @{ &&foo - &&foo, &&bar - &&foo,
|
|
|
|
&&hack - &&foo @};
|
1999-07-31 03:26:09 +02:00
|
|
|
goto *(&&foo + array[i]);
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1999-07-31 03:26:09 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
This is more friendly to code living in shared libraries, as it reduces
|
|
|
|
the number of dynamic relocations that are needed, and by consequence,
|
|
|
|
allows the data to be read-only.
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@node Nested Functions
|
|
|
|
@section Nested Functions
|
|
|
|
@cindex nested functions
|
|
|
|
@cindex downward funargs
|
|
|
|
@cindex thunks
|
|
|
|
|
|
|
|
A @dfn{nested function} is a function defined inside another function.
|
|
|
|
(Nested functions are not supported for GNU C++.) The nested function's
|
|
|
|
name is local to the block where it is defined. For example, here we
|
|
|
|
define a nested function named @code{square}, and call it twice:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
@group
|
|
|
|
foo (double a, double b)
|
|
|
|
@{
|
|
|
|
double square (double z) @{ return z * z; @}
|
|
|
|
|
|
|
|
return square (a) + square (b);
|
|
|
|
@}
|
|
|
|
@end group
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
The nested function can access all the variables of the containing
|
|
|
|
function that are visible at the point of its definition. This is
|
|
|
|
called @dfn{lexical scoping}. For example, here we show a nested
|
|
|
|
function which uses an inherited variable named @code{offset}:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2001-07-03 02:46:05 +02:00
|
|
|
@group
|
1996-09-24 00:41:16 +02:00
|
|
|
bar (int *array, int offset, int size)
|
|
|
|
@{
|
|
|
|
int access (int *array, int index)
|
|
|
|
@{ return array[index + offset]; @}
|
|
|
|
int i;
|
2002-06-24 19:21:04 +02:00
|
|
|
/* @r{@dots{}} */
|
1996-09-24 00:41:16 +02:00
|
|
|
for (i = 0; i < size; i++)
|
2002-06-24 19:21:04 +02:00
|
|
|
/* @r{@dots{}} */ access (array, i) /* @r{@dots{}} */
|
1996-09-24 00:41:16 +02:00
|
|
|
@}
|
2001-07-03 02:46:05 +02:00
|
|
|
@end group
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
Nested function definitions are permitted within functions in the places
|
|
|
|
where variable definitions are allowed; that is, in any block, before
|
|
|
|
the first statement in the block.
|
|
|
|
|
|
|
|
It is possible to call the nested function from outside the scope of its
|
|
|
|
name by storing its address or passing the address to another function:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
hack (int *array, int size)
|
|
|
|
@{
|
|
|
|
void store (int index, int value)
|
|
|
|
@{ array[index] = value; @}
|
|
|
|
|
|
|
|
intermediate (store, size);
|
|
|
|
@}
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
Here, the function @code{intermediate} receives the address of
|
|
|
|
@code{store} as an argument. If @code{intermediate} calls @code{store},
|
|
|
|
the arguments given to @code{store} are used to store into @code{array}.
|
|
|
|
But this technique works only so long as the containing function
|
|
|
|
(@code{hack}, in this example) does not exit.
|
|
|
|
|
|
|
|
If you try to call the nested function through its address after the
|
|
|
|
containing function has exited, all hell will break loose. If you try
|
|
|
|
to call it after a containing scope level has exited, and if it refers
|
|
|
|
to some of the variables that are no longer in scope, you may be lucky,
|
|
|
|
but it's not wise to take the risk. If, however, the nested function
|
|
|
|
does not refer to anything that has gone out of scope, you should be
|
|
|
|
safe.
|
|
|
|
|
2001-08-18 23:02:44 +02:00
|
|
|
GCC implements taking the address of a nested function using a technique
|
|
|
|
called @dfn{trampolines}. A paper describing them is available as
|
|
|
|
|
|
|
|
@noindent
|
2002-09-09 20:26:40 +02:00
|
|
|
@uref{http://people.debian.org/~aaronl/Usenix88-lexic.pdf}.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
A nested function can jump to a label inherited from a containing
|
|
|
|
function, provided the label was explicitly declared in the containing
|
|
|
|
function (@pxref{Local Labels}). Such a jump returns instantly to the
|
|
|
|
containing function, exiting the nested function which did the
|
|
|
|
@code{goto} and any intermediate functions as well. Here is an example:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
@group
|
|
|
|
bar (int *array, int offset, int size)
|
|
|
|
@{
|
|
|
|
__label__ failure;
|
|
|
|
int access (int *array, int index)
|
|
|
|
@{
|
|
|
|
if (index > size)
|
|
|
|
goto failure;
|
|
|
|
return array[index + offset];
|
|
|
|
@}
|
|
|
|
int i;
|
2002-06-24 19:21:04 +02:00
|
|
|
/* @r{@dots{}} */
|
1996-09-24 00:41:16 +02:00
|
|
|
for (i = 0; i < size; i++)
|
2002-06-24 19:21:04 +02:00
|
|
|
/* @r{@dots{}} */ access (array, i) /* @r{@dots{}} */
|
|
|
|
/* @r{@dots{}} */
|
1996-09-24 00:41:16 +02:00
|
|
|
return 0;
|
|
|
|
|
|
|
|
/* @r{Control comes here from @code{access}
|
|
|
|
if it detects an error.} */
|
|
|
|
failure:
|
|
|
|
return -1;
|
|
|
|
@}
|
|
|
|
@end group
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2005-02-01 00:18:49 +01:00
|
|
|
A nested function always has no linkage. Declaring one with
|
|
|
|
@code{extern} or @code{static} is erroneous. If you need to declare the nested function
|
1996-09-24 00:41:16 +02:00
|
|
|
before its definition, use @code{auto} (which is otherwise meaningless
|
|
|
|
for function declarations).
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
bar (int *array, int offset, int size)
|
|
|
|
@{
|
|
|
|
__label__ failure;
|
|
|
|
auto int access (int *, int);
|
2002-06-24 19:21:04 +02:00
|
|
|
/* @r{@dots{}} */
|
1996-09-24 00:41:16 +02:00
|
|
|
int access (int *array, int index)
|
|
|
|
@{
|
|
|
|
if (index > size)
|
|
|
|
goto failure;
|
|
|
|
return array[index + offset];
|
|
|
|
@}
|
2002-06-24 19:21:04 +02:00
|
|
|
/* @r{@dots{}} */
|
1996-09-24 00:41:16 +02:00
|
|
|
@}
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@node Constructing Calls
|
|
|
|
@section Constructing Function Calls
|
|
|
|
@cindex constructing calls
|
|
|
|
@cindex forwarding calls
|
|
|
|
|
|
|
|
Using the built-in functions described below, you can record
|
|
|
|
the arguments a function received, and call another function
|
|
|
|
with the same arguments, without knowing the number or types
|
|
|
|
of the arguments.
|
|
|
|
|
|
|
|
You can also record the return value of that function call,
|
|
|
|
and later return that value, without knowing what data type
|
|
|
|
the function tried to return (as long as your caller expects
|
|
|
|
that data type).
|
|
|
|
|
2003-12-05 09:09:33 +01:00
|
|
|
However, these built-in functions may interact badly with some
|
|
|
|
sophisticated features or other extensions of the language. It
|
|
|
|
is, therefore, not recommended to use them outside very simple
|
|
|
|
functions acting as mere forwarders for their arguments.
|
|
|
|
|
2001-06-13 00:40:00 +02:00
|
|
|
@deftypefn {Built-in Function} {void *} __builtin_apply_args ()
|
|
|
|
This built-in function returns a pointer to data
|
1996-09-24 00:41:16 +02:00
|
|
|
describing how to perform a call with the same arguments as were passed
|
|
|
|
to the current function.
|
|
|
|
|
|
|
|
The function saves the arg pointer register, structure value address,
|
|
|
|
and all registers that might be used to pass arguments to a function
|
|
|
|
into a block of memory allocated on the stack. Then it returns the
|
|
|
|
address of that block.
|
2001-06-13 00:40:00 +02:00
|
|
|
@end deftypefn
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-06-13 00:40:00 +02:00
|
|
|
@deftypefn {Built-in Function} {void *} __builtin_apply (void (*@var{function})(), void *@var{arguments}, size_t @var{size})
|
|
|
|
This built-in function invokes @var{function}
|
|
|
|
with a copy of the parameters described by @var{arguments}
|
|
|
|
and @var{size}.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
The value of @var{arguments} should be the value returned by
|
|
|
|
@code{__builtin_apply_args}. The argument @var{size} specifies the size
|
|
|
|
of the stack argument data, in bytes.
|
|
|
|
|
2001-06-13 00:40:00 +02:00
|
|
|
This function returns a pointer to data describing
|
1996-09-24 00:41:16 +02:00
|
|
|
how to return whatever value was returned by @var{function}. The data
|
|
|
|
is saved in a block of memory allocated on the stack.
|
|
|
|
|
|
|
|
It is not always simple to compute the proper value for @var{size}. The
|
|
|
|
value is used by @code{__builtin_apply} to compute the amount of data
|
|
|
|
that should be pushed on the stack and copied from the incoming argument
|
|
|
|
area.
|
2001-06-13 00:40:00 +02:00
|
|
|
@end deftypefn
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-06-13 00:40:00 +02:00
|
|
|
@deftypefn {Built-in Function} {void} __builtin_return (void *@var{result})
|
1996-09-24 00:41:16 +02:00
|
|
|
This built-in function returns the value described by @var{result} from
|
|
|
|
the containing function. You should specify, for @var{result}, a value
|
|
|
|
returned by @code{__builtin_apply}.
|
2001-06-13 00:40:00 +02:00
|
|
|
@end deftypefn
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@node Typeof
|
|
|
|
@section Referring to a Type with @code{typeof}
|
|
|
|
@findex typeof
|
|
|
|
@findex sizeof
|
|
|
|
@cindex macros, types of arguments
|
|
|
|
|
|
|
|
Another way to refer to the type of an expression is with @code{typeof}.
|
|
|
|
The syntax of using of this keyword looks like @code{sizeof}, but the
|
|
|
|
construct acts semantically like a type name defined with @code{typedef}.
|
|
|
|
|
|
|
|
There are two ways of writing the argument to @code{typeof}: with an
|
|
|
|
expression or with a type. Here is an example with an expression:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
typeof (x[0](1))
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
2001-01-12 17:58:51 +01:00
|
|
|
This assumes that @code{x} is an array of pointers to functions;
|
|
|
|
the type described is that of the values of the functions.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
Here is an example with a typename as the argument:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
typeof (int *)
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
Here the type described is that of pointers to @code{int}.
|
|
|
|
|
2001-01-12 19:51:27 +01:00
|
|
|
If you are writing a header file that must work when included in ISO C
|
1996-09-24 00:41:16 +02:00
|
|
|
programs, write @code{__typeof__} instead of @code{typeof}.
|
|
|
|
@xref{Alternate Keywords}.
|
|
|
|
|
|
|
|
A @code{typeof}-construct can be used anywhere a typedef name could be
|
|
|
|
used. For example, you can use it in a declaration, in a cast, or inside
|
|
|
|
of @code{sizeof} or @code{typeof}.
|
|
|
|
|
2002-10-09 23:27:38 +02:00
|
|
|
@code{typeof} is often useful in conjunction with the
|
|
|
|
statements-within-expressions feature. Here is how the two together can
|
|
|
|
be used to define a safe ``maximum'' macro that operates on any
|
|
|
|
arithmetic type and evaluates each of its arguments exactly once:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2002-10-09 23:27:38 +02:00
|
|
|
#define max(a,b) \
|
|
|
|
(@{ typeof (a) _a = (a); \
|
|
|
|
typeof (b) _b = (b); \
|
|
|
|
_a > _b ? _a : _b; @})
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2002-10-09 23:27:38 +02:00
|
|
|
|
2003-03-21 16:06:19 +01:00
|
|
|
@cindex underscores in variables in macros
|
|
|
|
@cindex @samp{_} in variables in macros
|
|
|
|
@cindex local variables in macros
|
|
|
|
@cindex variables, local, in macros
|
|
|
|
@cindex macros, local variables in
|
|
|
|
|
|
|
|
The reason for using names that start with underscores for the local
|
|
|
|
variables is to avoid conflicts with variable names that occur within the
|
|
|
|
expressions that are substituted for @code{a} and @code{b}. Eventually we
|
|
|
|
hope to design a new form of declaration syntax that allows you to declare
|
|
|
|
variables whose scopes start only after their initializers; this will be a
|
|
|
|
more reliable way to prevent such conflicts.
|
|
|
|
|
2002-10-09 23:27:38 +02:00
|
|
|
@noindent
|
|
|
|
Some more examples of the use of @code{typeof}:
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@itemize @bullet
|
|
|
|
@item
|
|
|
|
This declares @code{y} with the type of what @code{x} points to.
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
typeof (*x) y;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@item
|
|
|
|
This declares @code{y} as an array of such values.
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
typeof (*x) y[4];
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@item
|
|
|
|
This declares @code{y} as an array of pointers to characters:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
typeof (typeof (char *)[4]) y;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
It is equivalent to the following traditional C declaration:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
char *y[4];
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
To see the meaning of the declaration using @code{typeof}, and why it
|
bugreport.texi, [...]: Avoid some first-person references and patronizing comments.
* doc/bugreport.texi, doc/configterms.texi, doc/contrib.texi,
doc/contribute.texi, doc/cpp.texi, doc/cppinternals.texi,
doc/extend.texi, doc/install.texi, doc/invoke.texi, doc/md.texi,
doc/portability.texi, doc/tree-ssa.texi, doc/trouble.texi: Avoid
some first-person references and patronizing comments. Based on
printed manual.
* doc/invoke.texi: Don't reference fortran@gnu.org.
* doc/trouble.texi (Warning when a non-void function value is
ignored): Rewrite. From Russ Allbery and Chris Devers.
From-SVN: r84034
2004-07-03 01:57:12 +02:00
|
|
|
might be a useful way to write, rewrite it with these macros:
|
1996-09-24 00:41:16 +02:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
#define pointer(T) typeof(T *)
|
|
|
|
#define array(T, N) typeof(T [N])
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
Now the declaration can be rewritten this way:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
array (pointer (char), 4) y;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
Thus, @code{array (pointer (char), 4)} is the type of arrays of 4
|
|
|
|
pointers to @code{char}.
|
|
|
|
@end itemize
|
|
|
|
|
2002-10-09 23:27:38 +02:00
|
|
|
@emph{Compatibility Note:} In addition to @code{typeof}, GCC 2 supported
|
|
|
|
a more limited extension which permitted one to write
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2002-10-09 23:27:38 +02:00
|
|
|
typedef @var{T} = @var{expr};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2002-10-09 23:27:38 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
with the effect of declaring @var{T} to have the type of the expression
|
|
|
|
@var{expr}. This extension does not work with GCC 3 (versions between
|
|
|
|
3.0 and 3.2 will crash; 3.2.1 and later give an error). Code which
|
|
|
|
relies on it should be rewritten to use @code{typeof}:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2002-10-09 23:27:38 +02:00
|
|
|
typedef typeof(@var{expr}) @var{T};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2002-10-09 23:27:38 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
This will work with all versions of GCC@.
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@node Conditionals
|
|
|
|
@section Conditionals with Omitted Operands
|
|
|
|
@cindex conditional expressions, extensions
|
|
|
|
@cindex omitted middle-operands
|
|
|
|
@cindex middle-operands, omitted
|
|
|
|
@cindex extensions, @code{?:}
|
|
|
|
@cindex @code{?:} extensions
|
|
|
|
|
|
|
|
The middle operand in a conditional expression may be omitted. Then
|
|
|
|
if the first operand is nonzero, its value is the value of the conditional
|
|
|
|
expression.
|
|
|
|
|
|
|
|
Therefore, the expression
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
x ? : y
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
has the value of @code{x} if that is nonzero; otherwise, the value of
|
|
|
|
@code{y}.
|
|
|
|
|
|
|
|
This example is perfectly equivalent to
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
x ? x : y
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@cindex side effect in ?:
|
|
|
|
@cindex ?: side effect
|
|
|
|
@noindent
|
|
|
|
In this simple case, the ability to omit the middle operand is not
|
|
|
|
especially useful. When it becomes useful is when the first operand does,
|
|
|
|
or may (if it is a macro argument), contain a side effect. Then repeating
|
|
|
|
the operand in the middle would perform the side effect twice. Omitting
|
|
|
|
the middle operand uses the value already computed without the undesirable
|
|
|
|
effects of recomputing it.
|
|
|
|
|
|
|
|
@node Long Long
|
|
|
|
@section Double-Word Integers
|
|
|
|
@cindex @code{long long} data types
|
|
|
|
@cindex double-word arithmetic
|
|
|
|
@cindex multiprecision arithmetic
|
2001-05-21 01:21:59 +02:00
|
|
|
@cindex @code{LL} integer suffix
|
|
|
|
@cindex @code{ULL} integer suffix
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-05-21 01:21:59 +02:00
|
|
|
ISO C99 supports data types for integers that are at least 64 bits wide,
|
|
|
|
and as an extension GCC supports them in C89 mode and in C++.
|
|
|
|
Simply write @code{long long int} for a signed integer, or
|
1996-09-24 00:41:16 +02:00
|
|
|
@code{unsigned long long int} for an unsigned integer. To make an
|
2001-06-13 00:40:00 +02:00
|
|
|
integer constant of type @code{long long int}, add the suffix @samp{LL}
|
1996-09-24 00:41:16 +02:00
|
|
|
to the integer. To make an integer constant of type @code{unsigned long
|
2001-06-13 00:40:00 +02:00
|
|
|
long int}, add the suffix @samp{ULL} to the integer.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
You can use these types in arithmetic like any other integer types.
|
|
|
|
Addition, subtraction, and bitwise boolean operations on these types
|
|
|
|
are open-coded on all types of machines. Multiplication is open-coded
|
|
|
|
if the machine supports fullword-to-doubleword a widening multiply
|
|
|
|
instruction. Division and shifts are open-coded only on machines that
|
|
|
|
provide special support. The operations that are not open-coded use
|
c-tree.texi, [...]: Replace . at end of sentences preceded by a capital letter with @..
* doc/c-tree.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppinternals.texi, doc/extend.texi, doc/gcc.texi,
doc/gcov.texi, doc/install-old.texi, doc/install.texi,
doc/invoke.texi, doc/md.texi, doc/rtl.texi, doc/tm.texi: Replace
. at end of sentences preceded by a capital letter with @..
From-SVN: r43611
2001-06-27 17:04:16 +02:00
|
|
|
special library routines that come with GCC@.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
There may be pitfalls when you use @code{long long} types for function
|
|
|
|
arguments, unless you declare function prototypes. If a function
|
|
|
|
expects type @code{int} for its argument, and you pass a value of type
|
|
|
|
@code{long long int}, confusion will result because the caller and the
|
|
|
|
subroutine will disagree about the number of bytes for the argument.
|
|
|
|
Likewise, if the function expects @code{long long int} and you pass
|
|
|
|
@code{int}. The best way to avoid such problems is to use prototypes.
|
|
|
|
|
|
|
|
@node Complex
|
|
|
|
@section Complex Numbers
|
|
|
|
@cindex complex numbers
|
2001-05-21 01:21:59 +02:00
|
|
|
@cindex @code{_Complex} keyword
|
|
|
|
@cindex @code{__complex__} keyword
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-05-21 01:21:59 +02:00
|
|
|
ISO C99 supports complex floating data types, and as an extension GCC
|
|
|
|
supports them in C89 mode and in C++, and supports complex integer data
|
|
|
|
types which are not part of ISO C99. You can declare complex types
|
|
|
|
using the keyword @code{_Complex}. As an extension, the older GNU
|
|
|
|
keyword @code{__complex__} is also supported.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-05-21 01:21:59 +02:00
|
|
|
For example, @samp{_Complex double x;} declares @code{x} as a
|
1996-09-24 00:41:16 +02:00
|
|
|
variable whose real part and imaginary part are both of type
|
2001-05-21 01:21:59 +02:00
|
|
|
@code{double}. @samp{_Complex short int y;} declares @code{y} to
|
1996-09-24 00:41:16 +02:00
|
|
|
have real and imaginary parts of type @code{short int}; this is not
|
|
|
|
likely to be useful, but it shows that the set of complex types is
|
|
|
|
complete.
|
|
|
|
|
|
|
|
To write a constant with a complex data type, use the suffix @samp{i} or
|
|
|
|
@samp{j} (either one; they are equivalent). For example, @code{2.5fi}
|
2001-05-21 01:21:59 +02:00
|
|
|
has type @code{_Complex float} and @code{3i} has type
|
|
|
|
@code{_Complex int}. Such a constant always has a pure imaginary
|
1996-09-24 00:41:16 +02:00
|
|
|
value, but you can form any complex value you like by adding one to a
|
2001-05-21 01:21:59 +02:00
|
|
|
real constant. This is a GNU extension; if you have an ISO C99
|
|
|
|
conforming C library (such as GNU libc), and want to construct complex
|
|
|
|
constants of floating type, you should include @code{<complex.h>} and
|
|
|
|
use the macros @code{I} or @code{_Complex_I} instead.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-05-21 01:21:59 +02:00
|
|
|
@cindex @code{__real__} keyword
|
|
|
|
@cindex @code{__imag__} keyword
|
1996-09-24 00:41:16 +02:00
|
|
|
To extract the real part of a complex-valued expression @var{exp}, write
|
|
|
|
@code{__real__ @var{exp}}. Likewise, use @code{__imag__} to
|
2001-05-21 01:21:59 +02:00
|
|
|
extract the imaginary part. This is a GNU extension; for values of
|
|
|
|
floating type, you should use the ISO C99 functions @code{crealf},
|
|
|
|
@code{creal}, @code{creall}, @code{cimagf}, @code{cimag} and
|
|
|
|
@code{cimagl}, declared in @code{<complex.h>} and also provided as
|
c-tree.texi, [...]: Replace . at end of sentences preceded by a capital letter with @..
* doc/c-tree.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppinternals.texi, doc/extend.texi, doc/gcc.texi,
doc/gcov.texi, doc/install-old.texi, doc/install.texi,
doc/invoke.texi, doc/md.texi, doc/rtl.texi, doc/tm.texi: Replace
. at end of sentences preceded by a capital letter with @..
From-SVN: r43611
2001-06-27 17:04:16 +02:00
|
|
|
built-in functions by GCC@.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-05-21 01:21:59 +02:00
|
|
|
@cindex complex conjugation
|
1996-09-24 00:41:16 +02:00
|
|
|
The operator @samp{~} performs complex conjugation when used on a value
|
2001-05-21 01:21:59 +02:00
|
|
|
with a complex type. This is a GNU extension; for values of
|
|
|
|
floating type, you should use the ISO C99 functions @code{conjf},
|
|
|
|
@code{conj} and @code{conjl}, declared in @code{<complex.h>} and also
|
c-tree.texi, [...]: Replace . at end of sentences preceded by a capital letter with @..
* doc/c-tree.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppinternals.texi, doc/extend.texi, doc/gcc.texi,
doc/gcov.texi, doc/install-old.texi, doc/install.texi,
doc/invoke.texi, doc/md.texi, doc/rtl.texi, doc/tm.texi: Replace
. at end of sentences preceded by a capital letter with @..
From-SVN: r43611
2001-06-27 17:04:16 +02:00
|
|
|
provided as built-in functions by GCC@.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
GCC can allocate complex automatic variables in a noncontiguous
|
1996-09-24 00:41:16 +02:00
|
|
|
fashion; it's even possible for the real part to be in a register while
|
2002-12-13 21:07:15 +01:00
|
|
|
the imaginary part is on the stack (or vice-versa). Only the DWARF2
|
|
|
|
debug info format can represent this, so use of DWARF2 is recommended.
|
|
|
|
If you are using the stabs debug info format, GCC describes a noncontiguous
|
|
|
|
complex variable as if it were two separate variables of noncomplex type.
|
1996-09-24 00:41:16 +02:00
|
|
|
If the variable's actual name is @code{foo}, the two fictitious
|
|
|
|
variables are named @code{foo$real} and @code{foo$imag}. You can
|
|
|
|
examine and set these two fictitious variables with your debugger.
|
|
|
|
|
1998-12-01 22:05:17 +01:00
|
|
|
@node Hex Floats
|
1998-12-02 09:08:38 +01:00
|
|
|
@section Hex Floats
|
|
|
|
@cindex hex floats
|
1999-09-07 07:49:18 +02:00
|
|
|
|
2001-05-21 01:21:59 +02:00
|
|
|
ISO C99 supports floating-point numbers written not only in the usual
|
1998-12-01 22:05:17 +01:00
|
|
|
decimal notation, such as @code{1.55e1}, but also numbers such as
|
2001-05-21 01:21:59 +02:00
|
|
|
@code{0x1.fp3} written in hexadecimal format. As a GNU extension, GCC
|
|
|
|
supports this in C89 mode (except in some cases when strictly
|
|
|
|
conforming) and in C++. In that format the
|
2001-06-13 00:40:00 +02:00
|
|
|
@samp{0x} hex introducer and the @samp{p} or @samp{P} exponent field are
|
1998-12-01 22:05:17 +01:00
|
|
|
mandatory. The exponent is a decimal number that indicates the power of
|
2001-06-13 00:40:00 +02:00
|
|
|
2 by which the significant part will be multiplied. Thus @samp{0x1.f} is
|
2001-07-03 02:46:05 +02:00
|
|
|
@tex
|
|
|
|
$1 {15\over16}$,
|
|
|
|
@end tex
|
|
|
|
@ifnottex
|
|
|
|
1 15/16,
|
|
|
|
@end ifnottex
|
|
|
|
@samp{p3} multiplies it by 8, and the value of @code{0x1.fp3}
|
1998-12-01 22:05:17 +01:00
|
|
|
is the same as @code{1.55e1}.
|
|
|
|
|
|
|
|
Unlike for floating-point numbers in the decimal notation the exponent
|
|
|
|
is always required in the hexadecimal notation. Otherwise the compiler
|
|
|
|
would not be able to resolve the ambiguity of, e.g., @code{0x1.f}. This
|
2001-06-13 00:40:00 +02:00
|
|
|
could mean @code{1.0f} or @code{1.9375} since @samp{f} is also the
|
1998-12-01 22:05:17 +01:00
|
|
|
extension for floating-point constants of type @code{float}.
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@node Zero Length
|
|
|
|
@section Arrays of Length Zero
|
|
|
|
@cindex arrays of length zero
|
|
|
|
@cindex zero-length arrays
|
|
|
|
@cindex length-zero arrays
|
2001-01-05 06:58:23 +01:00
|
|
|
@cindex flexible array members
|
1996-09-24 00:41:16 +02:00
|
|
|
|
c-tree.texi, [...]: Replace . at end of sentences preceded by a capital letter with @..
* doc/c-tree.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppinternals.texi, doc/extend.texi, doc/gcc.texi,
doc/gcov.texi, doc/install-old.texi, doc/install.texi,
doc/invoke.texi, doc/md.texi, doc/rtl.texi, doc/tm.texi: Replace
. at end of sentences preceded by a capital letter with @..
From-SVN: r43611
2001-06-27 17:04:16 +02:00
|
|
|
Zero-length arrays are allowed in GNU C@. They are very useful as the
|
2001-01-04 02:14:16 +01:00
|
|
|
last element of a structure which is really a header for a variable-length
|
1996-09-24 00:41:16 +02:00
|
|
|
object:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
struct line @{
|
|
|
|
int length;
|
|
|
|
char contents[0];
|
|
|
|
@};
|
|
|
|
|
2001-01-04 02:14:16 +01:00
|
|
|
struct line *thisline = (struct line *)
|
|
|
|
malloc (sizeof (struct line) + this_length);
|
|
|
|
thisline->length = this_length;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2002-07-23 17:52:02 +02:00
|
|
|
In ISO C90, you would have to give @code{contents} a length of 1, which
|
1996-09-24 00:41:16 +02:00
|
|
|
means either you waste space or complicate the argument to @code{malloc}.
|
|
|
|
|
2001-04-28 13:35:04 +02:00
|
|
|
In ISO C99, you would use a @dfn{flexible array member}, which is
|
2001-01-04 02:14:16 +01:00
|
|
|
slightly different in syntax and semantics:
|
|
|
|
|
|
|
|
@itemize @bullet
|
|
|
|
@item
|
|
|
|
Flexible array members are written as @code{contents[]} without
|
|
|
|
the @code{0}.
|
|
|
|
|
|
|
|
@item
|
|
|
|
Flexible array members have incomplete type, and so the @code{sizeof}
|
|
|
|
operator may not be applied. As a quirk of the original implementation
|
|
|
|
of zero-length arrays, @code{sizeof} evaluates to zero.
|
|
|
|
|
|
|
|
@item
|
|
|
|
Flexible array members may only appear as the last member of a
|
2001-09-21 02:27:59 +02:00
|
|
|
@code{struct} that is otherwise non-empty.
|
2002-08-17 16:48:28 +02:00
|
|
|
|
|
|
|
@item
|
|
|
|
A structure containing a flexible array member, or a union containing
|
|
|
|
such a structure (possibly recursively), may not be a member of a
|
|
|
|
structure or an element of an array. (However, these uses are
|
|
|
|
permitted by GCC as extensions.)
|
2001-01-05 06:58:23 +01:00
|
|
|
@end itemize
|
2000-11-20 00:40:37 +01:00
|
|
|
|
2001-01-05 06:58:23 +01:00
|
|
|
GCC versions before 3.0 allowed zero-length arrays to be statically
|
2001-09-21 02:27:59 +02:00
|
|
|
initialized, as if they were flexible arrays. In addition to those
|
|
|
|
cases that were useful, it also allowed initializations in situations
|
|
|
|
that would corrupt later data. Non-empty initialization of zero-length
|
|
|
|
arrays is now treated like any case where there are more initializer
|
|
|
|
elements than the array holds, in that a suitable warning about "excess
|
|
|
|
elements in array" is given, and the excess elements (all of them, in
|
|
|
|
this case) are ignored.
|
2001-01-05 06:58:23 +01:00
|
|
|
|
|
|
|
Instead GCC allows static initialization of flexible array members.
|
|
|
|
This is equivalent to defining a new structure containing the original
|
|
|
|
structure followed by an array of sufficient size to contain the data.
|
2001-06-27 02:04:39 +02:00
|
|
|
I.e.@: in the following, @code{f1} is constructed as if it were declared
|
2001-01-05 06:58:23 +01:00
|
|
|
like @code{f2}.
|
2000-11-20 00:40:37 +01:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2001-01-05 06:58:23 +01:00
|
|
|
struct f1 @{
|
|
|
|
int x; int y[];
|
|
|
|
@} f1 = @{ 1, @{ 2, 3, 4 @} @};
|
|
|
|
|
|
|
|
struct f2 @{
|
|
|
|
struct f1 f1; int data[3];
|
|
|
|
@} f2 = @{ @{ 1 @}, @{ 2, 3, 4 @} @};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2001-01-04 02:14:16 +01:00
|
|
|
|
2001-01-05 06:58:23 +01:00
|
|
|
@noindent
|
|
|
|
The convenience of this extension is that @code{f1} has the desired
|
|
|
|
type, eliminating the need to consistently refer to @code{f2.f1}.
|
|
|
|
|
|
|
|
This has symmetry with normal static arrays, in that an array of
|
|
|
|
unknown size is also written with @code{[]}.
|
2000-11-20 00:40:37 +01:00
|
|
|
|
2001-01-05 06:58:23 +01:00
|
|
|
Of course, this extension only makes sense if the extra data comes at
|
|
|
|
the end of a top-level object, as otherwise we would be overwriting
|
|
|
|
data at subsequent offsets. To avoid undue complication and confusion
|
|
|
|
with initialization of deeply nested arrays, we simply disallow any
|
|
|
|
non-empty initialization except when the structure is the top-level
|
|
|
|
object. For example:
|
2001-01-04 02:14:16 +01:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2001-01-05 06:58:23 +01:00
|
|
|
struct foo @{ int x; int y[]; @};
|
|
|
|
struct bar @{ struct foo z; @};
|
|
|
|
|
2001-11-03 14:23:58 +01:00
|
|
|
struct foo a = @{ 1, @{ 2, 3, 4 @} @}; // @r{Valid.}
|
|
|
|
struct bar b = @{ @{ 1, @{ 2, 3, 4 @} @} @}; // @r{Invalid.}
|
|
|
|
struct bar c = @{ @{ 1, @{ @} @} @}; // @r{Valid.}
|
|
|
|
struct foo d[1] = @{ @{ 1 @{ 2, 3, 4 @} @} @}; // @r{Invalid.}
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2000-10-04 20:03:33 +02:00
|
|
|
|
2003-04-12 03:43:11 +02:00
|
|
|
@node Empty Structures
|
|
|
|
@section Structures With No Members
|
|
|
|
@cindex empty structures
|
|
|
|
@cindex zero-size structures
|
|
|
|
|
|
|
|
GCC permits a C structure to have no members:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2003-04-12 03:43:11 +02:00
|
|
|
struct empty @{
|
|
|
|
@};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2003-04-12 03:43:11 +02:00
|
|
|
|
|
|
|
The structure will have size zero. In C++, empty structures are part
|
2003-04-15 04:28:17 +02:00
|
|
|
of the language. G++ treats empty structures as if they had a single
|
|
|
|
member of type @code{char}.
|
2003-04-12 03:43:11 +02:00
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@node Variable Length
|
|
|
|
@section Arrays of Variable Length
|
|
|
|
@cindex variable-length arrays
|
|
|
|
@cindex arrays of variable length
|
2001-05-21 01:21:59 +02:00
|
|
|
@cindex VLAs
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-05-21 01:21:59 +02:00
|
|
|
Variable-length automatic arrays are allowed in ISO C99, and as an
|
|
|
|
extension GCC accepts them in C89 mode and in C++. (However, GCC's
|
|
|
|
implementation of variable-length arrays does not yet conform in detail
|
|
|
|
to the ISO C99 standard.) These arrays are
|
1996-09-24 00:41:16 +02:00
|
|
|
declared like any other automatic arrays, but with a length that is not
|
|
|
|
a constant expression. The storage is allocated at the point of
|
|
|
|
declaration and deallocated when the brace-level is exited. For
|
|
|
|
example:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
FILE *
|
|
|
|
concat_fopen (char *s1, char *s2, char *mode)
|
|
|
|
@{
|
|
|
|
char str[strlen (s1) + strlen (s2) + 1];
|
|
|
|
strcpy (str, s1);
|
|
|
|
strcat (str, s2);
|
|
|
|
return fopen (str, mode);
|
|
|
|
@}
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@cindex scope of a variable length array
|
|
|
|
@cindex variable-length array scope
|
|
|
|
@cindex deallocating variable length arrays
|
|
|
|
Jumping or breaking out of the scope of the array name deallocates the
|
|
|
|
storage. Jumping into the scope is not allowed; you get an error
|
|
|
|
message for it.
|
|
|
|
|
|
|
|
@cindex @code{alloca} vs variable-length arrays
|
|
|
|
You can use the function @code{alloca} to get an effect much like
|
|
|
|
variable-length arrays. The function @code{alloca} is available in
|
|
|
|
many other C implementations (but not in all). On the other hand,
|
|
|
|
variable-length arrays are more elegant.
|
|
|
|
|
|
|
|
There are other differences between these two methods. Space allocated
|
|
|
|
with @code{alloca} exists until the containing @emph{function} returns.
|
|
|
|
The space for a variable-length array is deallocated as soon as the array
|
|
|
|
name's scope ends. (If you use both variable-length arrays and
|
|
|
|
@code{alloca} in the same function, deallocation of a variable-length array
|
|
|
|
will also deallocate anything more recently allocated with @code{alloca}.)
|
|
|
|
|
|
|
|
You can also use variable-length arrays as arguments to functions:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
struct entry
|
|
|
|
tester (int len, char data[len][len])
|
|
|
|
@{
|
2002-06-24 19:21:04 +02:00
|
|
|
/* @r{@dots{}} */
|
1996-09-24 00:41:16 +02:00
|
|
|
@}
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
The length of an array is computed once when the storage is allocated
|
|
|
|
and is remembered for the scope of the array in case you access it with
|
|
|
|
@code{sizeof}.
|
|
|
|
|
|
|
|
If you want to pass the array first and the length afterward, you can
|
|
|
|
use a forward declaration in the parameter list---another GNU extension.
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
struct entry
|
|
|
|
tester (int len; char data[len][len], int len)
|
|
|
|
@{
|
2002-06-24 19:21:04 +02:00
|
|
|
/* @r{@dots{}} */
|
1996-09-24 00:41:16 +02:00
|
|
|
@}
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@cindex parameter forward declaration
|
|
|
|
The @samp{int len} before the semicolon is a @dfn{parameter forward
|
|
|
|
declaration}, and it serves the purpose of making the name @code{len}
|
|
|
|
known when the declaration of @code{data} is parsed.
|
|
|
|
|
|
|
|
You can write any number of such parameter forward declarations in the
|
|
|
|
parameter list. They can be separated by commas or semicolons, but the
|
|
|
|
last one must end with a semicolon, which is followed by the ``real''
|
|
|
|
parameter declarations. Each forward declaration must match a ``real''
|
2001-05-21 01:21:59 +02:00
|
|
|
declaration in parameter name and data type. ISO C99 does not support
|
|
|
|
parameter forward declarations.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-01-13 17:59:42 +01:00
|
|
|
@node Variadic Macros
|
|
|
|
@section Macros with a Variable Number of Arguments.
|
1996-09-24 00:41:16 +02:00
|
|
|
@cindex variable number of arguments
|
|
|
|
@cindex macro with variable arguments
|
|
|
|
@cindex rest argument (in macro)
|
2001-01-13 17:59:42 +01:00
|
|
|
@cindex variadic macros
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-01-13 17:59:42 +01:00
|
|
|
In the ISO C standard of 1999, a macro can be declared to accept a
|
|
|
|
variable number of arguments much as a function can. The syntax for
|
|
|
|
defining the macro is similar to that of a function. Here is an
|
|
|
|
example:
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2002-09-04 19:35:59 +02:00
|
|
|
@smallexample
|
2001-01-13 17:59:42 +01:00
|
|
|
#define debug(format, ...) fprintf (stderr, format, __VA_ARGS__)
|
2002-09-04 19:35:59 +02:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-01-13 17:59:42 +01:00
|
|
|
Here @samp{@dots{}} is a @dfn{variable argument}. In the invocation of
|
|
|
|
such a macro, it represents the zero or more tokens until the closing
|
|
|
|
parenthesis that ends the invocation, including any commas. This set of
|
|
|
|
tokens replaces the identifier @code{__VA_ARGS__} in the macro body
|
|
|
|
wherever it appears. See the CPP manual for more information.
|
|
|
|
|
|
|
|
GCC has long supported variadic macros, and used a different syntax that
|
|
|
|
allowed you to give a name to the variable arguments just like any other
|
|
|
|
argument. Here is an example:
|
1996-09-24 00:41:16 +02:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2001-01-13 17:59:42 +01:00
|
|
|
#define debug(format, args...) fprintf (stderr, format, args)
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-01-13 17:59:42 +01:00
|
|
|
This is in all ways equivalent to the ISO C example above, but arguably
|
|
|
|
more readable and descriptive.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-01-13 17:59:42 +01:00
|
|
|
GNU CPP has two further variadic macro extensions, and permits them to
|
|
|
|
be used with either of the above forms of macro definition.
|
|
|
|
|
|
|
|
In standard C, you are not allowed to leave the variable argument out
|
|
|
|
entirely; but you are allowed to pass an empty argument. For example,
|
|
|
|
this invocation is invalid in ISO C, because there is no comma after
|
|
|
|
the string:
|
1996-09-24 00:41:16 +02:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2001-01-13 17:59:42 +01:00
|
|
|
debug ("A message")
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-01-13 17:59:42 +01:00
|
|
|
GNU CPP permits you to completely omit the variable arguments in this
|
|
|
|
way. In the above examples, the compiler would complain, though since
|
|
|
|
the expansion of the macro still has the extra comma after the format
|
|
|
|
string.
|
|
|
|
|
|
|
|
To help solve this problem, CPP behaves specially for variable arguments
|
|
|
|
used with the token paste operator, @samp{##}. If instead you write
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2002-09-04 19:35:59 +02:00
|
|
|
@smallexample
|
2001-01-13 17:59:42 +01:00
|
|
|
#define debug(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
|
2002-09-04 19:35:59 +02:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-01-13 17:59:42 +01:00
|
|
|
and if the variable arguments are omitted or empty, the @samp{##}
|
|
|
|
operator causes the preprocessor to remove the comma before it. If you
|
|
|
|
do provide some variable arguments in your macro invocation, GNU CPP
|
|
|
|
does not complain about the paste operation and instead places the
|
|
|
|
variable arguments after the comma. Just like any other pasted macro
|
|
|
|
argument, these arguments are not macro expanded.
|
|
|
|
|
|
|
|
@node Escaped Newlines
|
|
|
|
@section Slightly Looser Rules for Escaped Newlines
|
|
|
|
@cindex escaped newlines
|
|
|
|
@cindex newlines (escaped)
|
|
|
|
|
c-common.c, [...]: Delete code implementing -traditional mode.
* c-common.c, c-common.h, c-decl.c, c-lex.c, c-parse.in,
c-tree.h, c-typeck.c, cppexp.c, cpplex.c, cpplib.c, cpplib.h,
cppmacro.c, objc/lang-specs.h, objc/objc-act.c,
builtin-types.def, builtins.def, dwarf2out.c, dwarfout.c,
gcc.c, toplev.c: Delete code implementing -traditional mode.
* ada/misc.c, ch/ch-tree.h, ch/decl.c, cp/decl2.c, f/com.c,
f/lex.c, f/top.c, java/builtins.c, java/decl.c: Delete
traditional-mode-related code copied from the C front end
but not used, or used only to permit the compiler to link.
* doc/bugreport.texi, doc/cpp.texi, doc/extend.texi,
doc/invoke.texi, doc/standards.texi, doc/trouble.texi:
Document removal of -traditional mode for compilation, and
remove documentation only relevant to that mode.
* config/nextstep.h, config/ptx4.h, config/svr4.h,
config/convex/convex.h, config/d30v/d30v.h,
config/i386/dgux.h, config/i386/osf1elf.h,
config/i386/osfelf.h, config/i386/osfrose.h,
config/i386/sco5.h, config/i386/sol2.h, config/m68k/a-ux.h,
config/m68k/hp310.h, config/m88k/dgux.h,
config/m88k/dguxbcs.h, config/m88k/luna.h, config/m88k/m88k.c,
config/m88k/m88k.h, config/m88k/openbsd.h,
config/mips/abi64.h, config/mips/osfrose.h,
config/mips/svr4-5.h, config/mips/svr4-t.h,
config/sparc/sol2-sld-64.h, config/sparc/sol2.h,
config/stormy16/stormy16.h: Remove all references to
-traditional from target specs. Delete all mention of the
no-longer-necessary TRADITIONAL_RETURN_FLOAT macro. Also
delete a couple of commented-out definitions of
DOLLARS_IN_IDENTIFIERS, with (incorrect) commentary referring
to -traditional.
* system.h: Poison TRADITIONAL_RETURN_FLOAT.
* doc/tm.texi: Remove mention of TRADITIONAL_RETURN_FLOAT macro.
* testsuite/gcc.c-torture/execute/920730-1t.c,
testsuite/gcc.c-torture/execute/920730-1t.x,
testsuite/gcc.dg/ext-glob.c: Delete test cases, only relevant
to -traditional.
From-SVN: r50110
2002-02-27 19:48:07 +01:00
|
|
|
Recently, the preprocessor has relaxed its treatment of escaped
|
|
|
|
newlines. Previously, the newline had to immediately follow a
|
cpplib.h (CPP_AT_NAME, [...]): New token types.
* cpplib.h (CPP_AT_NAME, CPP_OBJC_STRING): New token types.
(struct cpp_options): Add narrow_charset, wide_charset,
bytes_big_endian fields. Remove EBCDIC field.
(cpp_init_iconv, cpp_interpret_string): New external interfaces.
* cpphash.h: Include <iconv.h> if we have it, otherwise
provide a dummy definition of iconv_t.
(struct cpp_reader): Add narrow_cset_desc and wide_cset_desc fields.
(_cpp_valid_ucn): Update prototype.
(_cpp_destroy_iconv): New prototype.
* doc/cpp.texi: Document character set handling.
* doc/cppopts.texi: Document -fexec-charset= and -fexec-wide-charset=.
* doc/extend.texi: Delete entire section on multiline strings.
Rewrite section on __FUNCTION__ etc now that these are
variables in C.
* cppucnid.tab, cppucnid.pl: New files.
* cppucnid.h: New generated file.
* cppcharset.c: Include cppucnid.h. Lots of commentary added.
(iconv_open, iconv, iconv_close): Provide dummy definitions
if !HAVE_ICONV.
(SOURCE_CHARSET, struct strbuf, init_iconv_desc, cpp_init_iconv,
_cpp_destroy_iconv, convert_cset, width_to_mask, convert_ucn,
emit_numeric_escape, convert_hex, convert_oct, convert_escape,
cpp_interpret_string, narrow_str_to_charconst,
wide_str_to_charconst): New.
(ucn_valid_in_identifier): Use a binary search through the
ucnranges table defined in cppucnid.h, not a long chain of if
statements.
(_cpp_valid_ucn): Add a limit pointer. Downgrade "universal
character names are only valid in C++ and C99" to a warning.
Issue the "meaning of \[uU] is different in traditional C"
warning here. Take care not to let iconv see an invalid UCS
value if we get a malformed UCN. Issue an error if we don't
have iconv.
(cpp_interpret_charconst): Moved here from cpplex.c. Use
cpp_interpret_string to do the heavy lifting.
* cppinit.c (cpp_create_reader): Initialize bytes_big_endian,
narrow_charset, wide_charset fields of options structure.
(cpp_destroy): Call _cpp_destroy_iconv.
* cpplex.c (forms_identifier_p): Adjust call to _cpp_valid_ucn.
(maybe_read_ucn, hex_digit_value, cpp_parse_escape): Delete.
(cpp_interpret_charconst): Moved to cppcharset.c.
* cpplib.c (dequote_string): Delete.
(interpret_string_notranslate): New.
(do_line, do_linemarker): Use interpret_string_notranslate.
* Makefile.in (cppcharset.o): Depend on cppucnid.h.
* c-common.c (fname_string, combine_strings): Delete.
* c-common.h (fname_string, combine_strings): Delete prototypes.
* c-lex.c (ignore_escape_flag): Delete.
(cb_ident): Use cpp_interpret_string, not lex_string.
(get_nonpadding_token): New function.
(c_lex): Handle Objective-C @-prefixed identifiers and strings here.
Adjust calls to lex_string. Don't write *value twice.
(lex_string): Now handles string constant concatenation.
Most of the work handed off to cpp_interpret_string.
Call fix_string_type here.
* c-parse.in (STRING_FUNC_NAME, VAR_FUNC_NAME): Replace with
FUNC_NAME, throughout.
(OBJC_STRING): New token type.
(primary:STRING): No need to call fix_string_type here.
(primary:objc_string): Make that OBJC_STRING.
(objc_string nonterminal): Delete.
(yylexname): Delete code to handle fake string constants.
(yylexstring): Delete entirely.
(_yylex): Handle CPP_AT_NAME and CPP_OBJC_STRING. No need
to handle CPP_ATSIGN.
* c.opt (-fexec-charset=, -fwide-exec-charset=): New options.
* c-opts.c (missing_arg, c_common_handle_option): Handle
OPT_fexec_charset_ and OPT_fwide_exec_charset_.
(c_common_init): Set cpp_opts->bytes_big_endian, not
cpp_opts->EBCDIC. Call cpp_init_iconv.
(print_help): Document -fexec-charset= and -fexec-wide-charset=.
(TARGET_EBCDIC): Delete default definition.
* objc/objc-act.c (build_objc_string_object): No need to
handle string constant concatenation.
cp:
* parser.c (cp_lexer_read_token): No need to handle string
constant concatenation.
testsuite:
* gcc.c-torture/execute/wchar_t-1.x: New file; XFAIL wchar_t-1.c
everywhere.
* gcc.dg/concat.c: Concatenation of string constants with
__FUNCTION__ / __PRETTY_FUNCTION__ is now a hard error.
* gcc.dg/wtr-strcat-1.c: Loosen dg-warning regexp.
* gcc.dg/cpp/escape-2.c: Use wide character constants where
necessary to avoid multi-character character constant warning.
* gcc.dg/cpp/escape.c: Likewise.
* gcc.dg/cpp/ucs.c: Likewise.
Remove backslashes from dg-bogus comments, as they confuse Tcl.
Fix a typo.
libstdc++-v3:
* testsuite/22_locale/collate/compare/wchar_t/2.cc
* testsuite/22_locale/collate/compare/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/compare/wchar_t/wrapped_locale.cc
* testsuite/22_locale/collate/hash/wchar_t/2.cc
* testsuite/22_locale/collate/hash/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/hash/wchar_t/wrapped_locale.cc
* testsuite/22_locale/collate/transform/wchar_t/2.cc
* testsuite/22_locale/collate/transform/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/transform/wchar_t/wrapped_locale.cc:
XFAIL on all targets.
From-SVN: r68952
2003-07-05 02:24:00 +02:00
|
|
|
backslash. The current implementation allows whitespace in the form
|
|
|
|
of spaces, horizontal and vertical tabs, and form feeds between the
|
2001-01-13 17:59:42 +01:00
|
|
|
backslash and the subsequent newline. The preprocessor issues a
|
|
|
|
warning, but treats it as a valid escaped newline and combines the two
|
|
|
|
lines to form a single logical line. This works within comments and
|
cpplib.h (CPP_AT_NAME, [...]): New token types.
* cpplib.h (CPP_AT_NAME, CPP_OBJC_STRING): New token types.
(struct cpp_options): Add narrow_charset, wide_charset,
bytes_big_endian fields. Remove EBCDIC field.
(cpp_init_iconv, cpp_interpret_string): New external interfaces.
* cpphash.h: Include <iconv.h> if we have it, otherwise
provide a dummy definition of iconv_t.
(struct cpp_reader): Add narrow_cset_desc and wide_cset_desc fields.
(_cpp_valid_ucn): Update prototype.
(_cpp_destroy_iconv): New prototype.
* doc/cpp.texi: Document character set handling.
* doc/cppopts.texi: Document -fexec-charset= and -fexec-wide-charset=.
* doc/extend.texi: Delete entire section on multiline strings.
Rewrite section on __FUNCTION__ etc now that these are
variables in C.
* cppucnid.tab, cppucnid.pl: New files.
* cppucnid.h: New generated file.
* cppcharset.c: Include cppucnid.h. Lots of commentary added.
(iconv_open, iconv, iconv_close): Provide dummy definitions
if !HAVE_ICONV.
(SOURCE_CHARSET, struct strbuf, init_iconv_desc, cpp_init_iconv,
_cpp_destroy_iconv, convert_cset, width_to_mask, convert_ucn,
emit_numeric_escape, convert_hex, convert_oct, convert_escape,
cpp_interpret_string, narrow_str_to_charconst,
wide_str_to_charconst): New.
(ucn_valid_in_identifier): Use a binary search through the
ucnranges table defined in cppucnid.h, not a long chain of if
statements.
(_cpp_valid_ucn): Add a limit pointer. Downgrade "universal
character names are only valid in C++ and C99" to a warning.
Issue the "meaning of \[uU] is different in traditional C"
warning here. Take care not to let iconv see an invalid UCS
value if we get a malformed UCN. Issue an error if we don't
have iconv.
(cpp_interpret_charconst): Moved here from cpplex.c. Use
cpp_interpret_string to do the heavy lifting.
* cppinit.c (cpp_create_reader): Initialize bytes_big_endian,
narrow_charset, wide_charset fields of options structure.
(cpp_destroy): Call _cpp_destroy_iconv.
* cpplex.c (forms_identifier_p): Adjust call to _cpp_valid_ucn.
(maybe_read_ucn, hex_digit_value, cpp_parse_escape): Delete.
(cpp_interpret_charconst): Moved to cppcharset.c.
* cpplib.c (dequote_string): Delete.
(interpret_string_notranslate): New.
(do_line, do_linemarker): Use interpret_string_notranslate.
* Makefile.in (cppcharset.o): Depend on cppucnid.h.
* c-common.c (fname_string, combine_strings): Delete.
* c-common.h (fname_string, combine_strings): Delete prototypes.
* c-lex.c (ignore_escape_flag): Delete.
(cb_ident): Use cpp_interpret_string, not lex_string.
(get_nonpadding_token): New function.
(c_lex): Handle Objective-C @-prefixed identifiers and strings here.
Adjust calls to lex_string. Don't write *value twice.
(lex_string): Now handles string constant concatenation.
Most of the work handed off to cpp_interpret_string.
Call fix_string_type here.
* c-parse.in (STRING_FUNC_NAME, VAR_FUNC_NAME): Replace with
FUNC_NAME, throughout.
(OBJC_STRING): New token type.
(primary:STRING): No need to call fix_string_type here.
(primary:objc_string): Make that OBJC_STRING.
(objc_string nonterminal): Delete.
(yylexname): Delete code to handle fake string constants.
(yylexstring): Delete entirely.
(_yylex): Handle CPP_AT_NAME and CPP_OBJC_STRING. No need
to handle CPP_ATSIGN.
* c.opt (-fexec-charset=, -fwide-exec-charset=): New options.
* c-opts.c (missing_arg, c_common_handle_option): Handle
OPT_fexec_charset_ and OPT_fwide_exec_charset_.
(c_common_init): Set cpp_opts->bytes_big_endian, not
cpp_opts->EBCDIC. Call cpp_init_iconv.
(print_help): Document -fexec-charset= and -fexec-wide-charset=.
(TARGET_EBCDIC): Delete default definition.
* objc/objc-act.c (build_objc_string_object): No need to
handle string constant concatenation.
cp:
* parser.c (cp_lexer_read_token): No need to handle string
constant concatenation.
testsuite:
* gcc.c-torture/execute/wchar_t-1.x: New file; XFAIL wchar_t-1.c
everywhere.
* gcc.dg/concat.c: Concatenation of string constants with
__FUNCTION__ / __PRETTY_FUNCTION__ is now a hard error.
* gcc.dg/wtr-strcat-1.c: Loosen dg-warning regexp.
* gcc.dg/cpp/escape-2.c: Use wide character constants where
necessary to avoid multi-character character constant warning.
* gcc.dg/cpp/escape.c: Likewise.
* gcc.dg/cpp/ucs.c: Likewise.
Remove backslashes from dg-bogus comments, as they confuse Tcl.
Fix a typo.
libstdc++-v3:
* testsuite/22_locale/collate/compare/wchar_t/2.cc
* testsuite/22_locale/collate/compare/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/compare/wchar_t/wrapped_locale.cc
* testsuite/22_locale/collate/hash/wchar_t/2.cc
* testsuite/22_locale/collate/hash/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/hash/wchar_t/wrapped_locale.cc
* testsuite/22_locale/collate/transform/wchar_t/2.cc
* testsuite/22_locale/collate/transform/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/transform/wchar_t/wrapped_locale.cc:
XFAIL on all targets.
From-SVN: r68952
2003-07-05 02:24:00 +02:00
|
|
|
tokens, as well as between tokens. Comments are @emph{not} treated as
|
|
|
|
whitespace for the purposes of this relaxation, since they have not
|
|
|
|
yet been replaced with spaces.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@node Subscripting
|
|
|
|
@section Non-Lvalue Arrays May Have Subscripts
|
|
|
|
@cindex subscripting
|
|
|
|
@cindex arrays, non-lvalue
|
|
|
|
|
|
|
|
@cindex subscripting and function values
|
re PR c/461 (non-lvalue arrays)
* c-common.c (c_expand_expr_stmt): Apply default conversions to
non-lvalue arrays if C99.
* c-typeck.c (default_conversion): Split out code handling
array-to-pointer and function-to-pointer conversions into a
separate default_function_array_conversion function.
(default_function_array_conversion): New function. Keep track of
whether any NON_LVALUE_EXPRs were stripped. Return non-lvalue
arrays unchanged outside C99 mode instead of giving an error for
them.
(build_component_ref): Use pedantic_non_lvalue when handling
COMPOUND_EXPR. Don't handle COND_EXPR specially.
(convert_arguments): Use default_function_array_conversion.
(build_unary_op): For ADDR_EXPR, take a flag indicating whether
non-lvalues are OK.
(unary_complex_lvalue): Likewise.
(internal_build_compound_expr): Use
default_function_array_conversion. Apply default conversions to
function in compound expression.
(build_c_cast, build_modify_expr, digest_init, build_asm_stmt):
Use default_function_array_conversion.
* doc/extend.texi: Update documentation of subscripting non-lvalue
arrays.
Fixes PR c/461.
testsuite:
* gcc.dg/c90-array-lval-1.c, gcc.dg/c90-array-lval-2.c,
gcc.dg/c99-array-lval-1.c, gcc.dg/c99-array-lval-2.c: Remove
XFAILs. Adjust expected error texts.
* gcc.c-torture/compile/20011106-1.c,
gcc.c-torture/compile/20011106-2.c, gcc.dg/c90-array-lval-3.c,
gcc.dg/c90-array-lval-4.c, gcc.dg/c90-array-lval-5.c,
gcc.dg/c99-array-lval-3.c, gcc.dg/c99-array-lval-4.c,
gcc.dg/c99-array-lval-5.c: New tests.
From-SVN: r46805
2001-11-06 13:39:36 +01:00
|
|
|
In ISO C99, arrays that are not lvalues still decay to pointers, and
|
|
|
|
may be subscripted, although they may not be modified or used after
|
|
|
|
the next sequence point and the unary @samp{&} operator may not be
|
|
|
|
applied to them. As an extension, GCC allows such arrays to be
|
|
|
|
subscripted in C89 mode, though otherwise they do not decay to
|
|
|
|
pointers outside C99 mode. For example,
|
2001-05-21 01:21:59 +02:00
|
|
|
this is valid in GNU C though not valid in C89:
|
1996-09-24 00:41:16 +02:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
@group
|
|
|
|
struct foo @{int a[4];@};
|
|
|
|
|
|
|
|
struct foo f();
|
|
|
|
|
|
|
|
bar (int index)
|
|
|
|
@{
|
|
|
|
return f().a[index];
|
|
|
|
@}
|
|
|
|
@end group
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@node Pointer Arith
|
|
|
|
@section Arithmetic on @code{void}- and Function-Pointers
|
|
|
|
@cindex void pointers, arithmetic
|
|
|
|
@cindex void, size of pointer to
|
|
|
|
@cindex function pointers, arithmetic
|
|
|
|
@cindex function, size of pointer to
|
|
|
|
|
|
|
|
In GNU C, addition and subtraction operations are supported on pointers to
|
|
|
|
@code{void} and on pointers to functions. This is done by treating the
|
|
|
|
size of a @code{void} or of a function as 1.
|
|
|
|
|
|
|
|
A consequence of this is that @code{sizeof} is also allowed on @code{void}
|
|
|
|
and on function types, and returns 1.
|
|
|
|
|
2001-06-13 00:40:00 +02:00
|
|
|
@opindex Wpointer-arith
|
|
|
|
The option @option{-Wpointer-arith} requests a warning if these extensions
|
1996-09-24 00:41:16 +02:00
|
|
|
are used.
|
|
|
|
|
|
|
|
@node Initializers
|
|
|
|
@section Non-Constant Initializers
|
|
|
|
@cindex initializers, non-constant
|
|
|
|
@cindex non-constant initializers
|
|
|
|
|
2001-05-21 01:21:59 +02:00
|
|
|
As in standard C++ and ISO C99, the elements of an aggregate initializer for an
|
c-tree.texi, [...]: Replace . at end of sentences preceded by a capital letter with @..
* doc/c-tree.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppinternals.texi, doc/extend.texi, doc/gcc.texi,
doc/gcov.texi, doc/install-old.texi, doc/install.texi,
doc/invoke.texi, doc/md.texi, doc/rtl.texi, doc/tm.texi: Replace
. at end of sentences preceded by a capital letter with @..
From-SVN: r43611
2001-06-27 17:04:16 +02:00
|
|
|
automatic variable are not required to be constant expressions in GNU C@.
|
1996-09-24 00:41:16 +02:00
|
|
|
Here is an example of an initializer with run-time varying elements:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
foo (float f, float g)
|
|
|
|
@{
|
|
|
|
float beat_freqs[2] = @{ f-g, f+g @};
|
2002-06-24 19:21:04 +02:00
|
|
|
/* @r{@dots{}} */
|
1996-09-24 00:41:16 +02:00
|
|
|
@}
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-05-21 01:21:59 +02:00
|
|
|
@node Compound Literals
|
|
|
|
@section Compound Literals
|
1996-09-24 00:41:16 +02:00
|
|
|
@cindex constructor expressions
|
|
|
|
@cindex initializations in expressions
|
|
|
|
@cindex structures, constructor expression
|
|
|
|
@cindex expressions, constructor
|
2001-05-21 01:21:59 +02:00
|
|
|
@cindex compound literals
|
|
|
|
@c The GNU C name for what C99 calls compound literals was "constructor expressions".
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-05-21 01:21:59 +02:00
|
|
|
ISO C99 supports compound literals. A compound literal looks like
|
1996-09-24 00:41:16 +02:00
|
|
|
a cast containing an initializer. Its value is an object of the
|
|
|
|
type specified in the cast, containing the elements specified in
|
2001-12-04 23:55:40 +01:00
|
|
|
the initializer; it is an lvalue. As an extension, GCC supports
|
|
|
|
compound literals in C89 mode and in C++.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
Usually, the specified type is a structure. Assume that
|
|
|
|
@code{struct foo} and @code{structure} are declared as shown:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
struct foo @{int a; char b[2];@} structure;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
2001-05-21 01:21:59 +02:00
|
|
|
Here is an example of constructing a @code{struct foo} with a compound literal:
|
1996-09-24 00:41:16 +02:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
structure = ((struct foo) @{x + y, 'a', 0@});
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
This is equivalent to writing the following:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
@{
|
|
|
|
struct foo temp = @{x + y, 'a', 0@};
|
|
|
|
structure = temp;
|
|
|
|
@}
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-05-21 01:21:59 +02:00
|
|
|
You can also construct an array. If all the elements of the compound literal
|
1996-09-24 00:41:16 +02:00
|
|
|
are (made up of) simple constant expressions, suitable for use in
|
2001-12-04 23:55:40 +01:00
|
|
|
initializers of objects of static storage duration, then the compound
|
|
|
|
literal can be coerced to a pointer to its first element and used in
|
|
|
|
such an initializer, as shown here:
|
1996-09-24 00:41:16 +02:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
char **foo = (char *[]) @{ "x", "y", "z" @};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-05-21 01:21:59 +02:00
|
|
|
Compound literals for scalar types and union types are is
|
|
|
|
also allowed, but then the compound literal is equivalent
|
1996-09-24 00:41:16 +02:00
|
|
|
to a cast.
|
|
|
|
|
2001-12-12 20:12:16 +01:00
|
|
|
As a GNU extension, GCC allows initialization of objects with static storage
|
|
|
|
duration by compound literals (which is not possible in ISO C99, because
|
|
|
|
the initializer is not a constant).
|
|
|
|
It is handled as if the object was initialized only with the bracket
|
|
|
|
enclosed list if compound literal's and object types match.
|
|
|
|
The initializer list of the compound literal must be constant.
|
|
|
|
If the object being initialized has array type of unknown size, the size is
|
2001-12-28 10:51:20 +01:00
|
|
|
determined by compound literal size.
|
2001-12-12 20:12:16 +01:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2001-12-12 20:12:16 +01:00
|
|
|
static struct foo x = (struct foo) @{1, 'a', 'b'@};
|
|
|
|
static int y[] = (int []) @{1, 2, 3@};
|
|
|
|
static int z[] = (int [3]) @{1@};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2001-12-12 20:12:16 +01:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
The above lines are equivalent to the following:
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2001-12-12 20:12:16 +01:00
|
|
|
static struct foo x = @{1, 'a', 'b'@};
|
|
|
|
static int y[] = @{1, 2, 3@};
|
2001-12-28 10:51:20 +01:00
|
|
|
static int z[] = @{1, 0, 0@};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2001-12-12 20:12:16 +01:00
|
|
|
|
2001-05-21 01:21:59 +02:00
|
|
|
@node Designated Inits
|
|
|
|
@section Designated Initializers
|
1996-09-24 00:41:16 +02:00
|
|
|
@cindex initializers with labeled elements
|
|
|
|
@cindex labeled elements in initializers
|
|
|
|
@cindex case labels in initializers
|
2001-05-21 01:21:59 +02:00
|
|
|
@cindex designated initializers
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2000-11-13 14:31:16 +01:00
|
|
|
Standard C89 requires the elements of an initializer to appear in a fixed
|
1996-09-24 00:41:16 +02:00
|
|
|
order, the same as the order of the elements in the array or structure
|
|
|
|
being initialized.
|
|
|
|
|
2000-11-13 14:31:16 +01:00
|
|
|
In ISO C99 you can give the elements in any order, specifying the array
|
|
|
|
indices or structure field names they apply to, and GNU C allows this as
|
|
|
|
an extension in C89 mode as well. This extension is not
|
1996-09-24 00:41:16 +02:00
|
|
|
implemented in GNU C++.
|
|
|
|
|
2000-11-13 14:31:16 +01:00
|
|
|
To specify an array index, write
|
1996-09-24 00:41:16 +02:00
|
|
|
@samp{[@var{index}] =} before the element value. For example,
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2000-11-13 14:31:16 +01:00
|
|
|
int a[6] = @{ [4] = 29, [2] = 15 @};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
is equivalent to
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
int a[6] = @{ 0, 0, 15, 0, 29, 0 @};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
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@end smallexample
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1996-09-24 00:41:16 +02:00
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@noindent
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The index values must be constant expressions, even if the array being
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initialized is automatic.
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2000-11-13 14:31:16 +01:00
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An alternative syntax for this which has been obsolete since GCC 2.5 but
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GCC still accepts is to write @samp{[@var{index}]} before the element
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value, with no @samp{=}.
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1996-09-24 00:41:16 +02:00
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To initialize a range of elements to the same value, write
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2000-11-13 14:31:16 +01:00
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@samp{[@var{first} ... @var{last}] = @var{value}}. This is a GNU
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extension. For example,
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1996-09-24 00:41:16 +02:00
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c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
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@smallexample
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1996-09-24 00:41:16 +02:00
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int widths[] = @{ [0 ... 9] = 1, [10 ... 99] = 2, [100] = 3 @};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
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@end smallexample
|
1996-09-24 00:41:16 +02:00
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|
|
|
c-typeck.c (store_init_value): Don't require constant initializer elements with -pedantic -std=c99.
* c-typeck.c (store_init_value): Don't require constant initializer
elements with -pedantic -std=c99.
(digest_init): Change error about non-constant initializer elements
into pedwarn.
(constructor_range_end): Remove.
(constructor_incremental, designator_depth,
designator_errorneous): New variables.
(struct constructor_stack): Remove range_end, add incremental.
(struct constructor_range_stack, constructor_range_stack): New.
(struct initializer_stack): Add constructor_range_stack.
(finish_init): Set it.
(start_init): Likewise. require_constant_elements for non-static
trees only if not flag_isoc99.
(really_start_incremental_init): Remove constructor_range_end, add
constructor_incremental.
(pop_init_level): Likewise.
(push_init_level): Likewise. If implicit and the subobject had some
value set already, preinitialize the level with it.
Warn about missing braces only if not pushing due to designators.
(set_designator, push_range_stack): New functions.
(set_init_label): Use them.
(set_init_index): Likewise. Remove constructor_range_end.
Error if designator index is outside of array bounds.
(add_pending_init): Compare values of purpose index trees, not the
trees themselves. Allow overwriting of already initialized element.
Issue a warning if it had side-effects.
(set_nonincremental_init, set_nonincremental_init_from_string): New
functions.
(pending_init_member): Rename to...
(find_init_member): ...this function. Call set_nonincremental_init
if necessary. Compare values of purpose index trees, not the trees
themselves. Return the actual value, not just non-zero if something
is found.
(output_init_element): Remove checks for duplicates.
If field has zero size, only check the initializer for correctness.
Call set_nonincremental_init if necessary. Push RECORD/ARRAY into AVL
if constructor_incremental is zero. Change error about initializers
not computable at load time into pedwarn.
(output_pending_init_elements): Compare bit positions, not
FIELD_DECLs to take into account zero-sized fields.
(process_init_element): Use constructor_range_stack to fill all
ranges in the designator lists from current level up.
* extend.texi: Update documentation for labeled elements.
* gcc.c-torture/execute/20000801-3.x: Remove.
* gcc.dg/c90-init-1.c: New test.
* gcc.dg/c99-init-1.c: New test.
* gcc.dg/c99-init-2.c: New test.
* gcc.dg/gnu99-init-1.c: New test.
From-SVN: r38968
2001-01-13 00:18:05 +01:00
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@noindent
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If the value in it has side-effects, the side-effects will happen only once,
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not for each initialized field by the range initializer.
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1996-09-24 00:41:16 +02:00
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@noindent
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Note that the length of the array is the highest value specified
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plus one.
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In a structure initializer, specify the name of a field to initialize
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2000-11-13 14:31:16 +01:00
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with @samp{.@var{fieldname} =} before the element value. For example,
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1996-09-24 00:41:16 +02:00
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given the following structure,
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|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
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@smallexample
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1996-09-24 00:41:16 +02:00
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struct point @{ int x, y; @};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
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@end smallexample
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1996-09-24 00:41:16 +02:00
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@noindent
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the following initialization
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|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
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@smallexample
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2000-11-13 14:31:16 +01:00
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struct point p = @{ .y = yvalue, .x = xvalue @};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
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@end smallexample
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1996-09-24 00:41:16 +02:00
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@noindent
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is equivalent to
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c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
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|
@smallexample
|
1996-09-24 00:41:16 +02:00
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struct point p = @{ xvalue, yvalue @};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
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@end smallexample
|
1996-09-24 00:41:16 +02:00
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2000-11-13 14:31:16 +01:00
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Another syntax which has the same meaning, obsolete since GCC 2.5, is
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@samp{@var{fieldname}:}, as shown here:
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1996-09-24 00:41:16 +02:00
|
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|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
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@smallexample
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2000-11-13 14:31:16 +01:00
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struct point p = @{ y: yvalue, x: xvalue @};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
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@end smallexample
|
1996-09-24 00:41:16 +02:00
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2001-05-21 01:21:59 +02:00
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@cindex designators
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The @samp{[@var{index}]} or @samp{.@var{fieldname}} is known as a
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@dfn{designator}. You can also use a designator (or the obsolete colon
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syntax) when initializing a union, to specify which element of the union
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should be used. For example,
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1996-09-24 00:41:16 +02:00
|
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c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
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@smallexample
|
1996-09-24 00:41:16 +02:00
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union foo @{ int i; double d; @};
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2000-11-13 14:31:16 +01:00
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union foo f = @{ .d = 4 @};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
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@end smallexample
|
1996-09-24 00:41:16 +02:00
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@noindent
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will convert 4 to a @code{double} to store it in the union using
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the second element. By contrast, casting 4 to type @code{union foo}
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would store it into the union as the integer @code{i}, since it is
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an integer. (@xref{Cast to Union}.)
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You can combine this technique of naming elements with ordinary C
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|
|
initialization of successive elements. Each initializer element that
|
2001-05-21 01:21:59 +02:00
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|
does not have a designator applies to the next consecutive element of the
|
1996-09-24 00:41:16 +02:00
|
|
|
array or structure. For example,
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
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int a[6] = @{ [1] = v1, v2, [4] = v4 @};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
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|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
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@noindent
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|
is equivalent to
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
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int a[6] = @{ 0, v1, v2, 0, v4, 0 @};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
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@end smallexample
|
1996-09-24 00:41:16 +02:00
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Labeling the elements of an array initializer is especially useful
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when the indices are characters or belong to an @code{enum} type.
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For example:
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|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
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|
@smallexample
|
1996-09-24 00:41:16 +02:00
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int whitespace[256]
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= @{ [' '] = 1, ['\t'] = 1, ['\h'] = 1,
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['\f'] = 1, ['\n'] = 1, ['\r'] = 1 @};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
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|
2001-05-21 01:21:59 +02:00
|
|
|
@cindex designator lists
|
2000-11-13 14:31:16 +01:00
|
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|
You can also write a series of @samp{.@var{fieldname}} and
|
2001-05-21 01:21:59 +02:00
|
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|
@samp{[@var{index}]} designators before an @samp{=} to specify a
|
2000-11-13 14:31:16 +01:00
|
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|
nested subobject to initialize; the list is taken relative to the
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|
subobject corresponding to the closest surrounding brace pair. For
|
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|
|
example, with the @samp{struct point} declaration above:
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|
2002-09-04 19:35:59 +02:00
|
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|
@smallexample
|
2000-11-13 14:31:16 +01:00
|
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|
struct point ptarray[10] = @{ [2].y = yv2, [2].x = xv2, [0].x = xv0 @};
|
2002-09-04 19:35:59 +02:00
|
|
|
@end smallexample
|
2000-11-13 14:31:16 +01:00
|
|
|
|
c-typeck.c (store_init_value): Don't require constant initializer elements with -pedantic -std=c99.
* c-typeck.c (store_init_value): Don't require constant initializer
elements with -pedantic -std=c99.
(digest_init): Change error about non-constant initializer elements
into pedwarn.
(constructor_range_end): Remove.
(constructor_incremental, designator_depth,
designator_errorneous): New variables.
(struct constructor_stack): Remove range_end, add incremental.
(struct constructor_range_stack, constructor_range_stack): New.
(struct initializer_stack): Add constructor_range_stack.
(finish_init): Set it.
(start_init): Likewise. require_constant_elements for non-static
trees only if not flag_isoc99.
(really_start_incremental_init): Remove constructor_range_end, add
constructor_incremental.
(pop_init_level): Likewise.
(push_init_level): Likewise. If implicit and the subobject had some
value set already, preinitialize the level with it.
Warn about missing braces only if not pushing due to designators.
(set_designator, push_range_stack): New functions.
(set_init_label): Use them.
(set_init_index): Likewise. Remove constructor_range_end.
Error if designator index is outside of array bounds.
(add_pending_init): Compare values of purpose index trees, not the
trees themselves. Allow overwriting of already initialized element.
Issue a warning if it had side-effects.
(set_nonincremental_init, set_nonincremental_init_from_string): New
functions.
(pending_init_member): Rename to...
(find_init_member): ...this function. Call set_nonincremental_init
if necessary. Compare values of purpose index trees, not the trees
themselves. Return the actual value, not just non-zero if something
is found.
(output_init_element): Remove checks for duplicates.
If field has zero size, only check the initializer for correctness.
Call set_nonincremental_init if necessary. Push RECORD/ARRAY into AVL
if constructor_incremental is zero. Change error about initializers
not computable at load time into pedwarn.
(output_pending_init_elements): Compare bit positions, not
FIELD_DECLs to take into account zero-sized fields.
(process_init_element): Use constructor_range_stack to fill all
ranges in the designator lists from current level up.
* extend.texi: Update documentation for labeled elements.
* gcc.c-torture/execute/20000801-3.x: Remove.
* gcc.dg/c90-init-1.c: New test.
* gcc.dg/c99-init-1.c: New test.
* gcc.dg/c99-init-2.c: New test.
* gcc.dg/gnu99-init-1.c: New test.
From-SVN: r38968
2001-01-13 00:18:05 +01:00
|
|
|
@noindent
|
|
|
|
If the same field is initialized multiple times, it will have value from
|
|
|
|
the last initialization. If any such overridden initialization has
|
|
|
|
side-effect, it is unspecified whether the side-effect happens or not.
|
contrib.texi, [...]: Capitalize "gcc", "g++" and "g77" or mark up with appropriate markup.
* doc/contrib.texi, doc/extend.texi, doc/gcov.texi,
doc/install.texi, doc/invoke.texi, doc/makefile.texi,
doc/sourcebuild.texi, doc/tm.texi, doc/trouble.texi: Capitalize
"gcc", "g++" and "g77" or mark up with appropriate markup. Adjust
wording and grammar.
From-SVN: r79482
2004-03-14 23:29:38 +01:00
|
|
|
Currently, GCC will discard them and issue a warning.
|
c-typeck.c (store_init_value): Don't require constant initializer elements with -pedantic -std=c99.
* c-typeck.c (store_init_value): Don't require constant initializer
elements with -pedantic -std=c99.
(digest_init): Change error about non-constant initializer elements
into pedwarn.
(constructor_range_end): Remove.
(constructor_incremental, designator_depth,
designator_errorneous): New variables.
(struct constructor_stack): Remove range_end, add incremental.
(struct constructor_range_stack, constructor_range_stack): New.
(struct initializer_stack): Add constructor_range_stack.
(finish_init): Set it.
(start_init): Likewise. require_constant_elements for non-static
trees only if not flag_isoc99.
(really_start_incremental_init): Remove constructor_range_end, add
constructor_incremental.
(pop_init_level): Likewise.
(push_init_level): Likewise. If implicit and the subobject had some
value set already, preinitialize the level with it.
Warn about missing braces only if not pushing due to designators.
(set_designator, push_range_stack): New functions.
(set_init_label): Use them.
(set_init_index): Likewise. Remove constructor_range_end.
Error if designator index is outside of array bounds.
(add_pending_init): Compare values of purpose index trees, not the
trees themselves. Allow overwriting of already initialized element.
Issue a warning if it had side-effects.
(set_nonincremental_init, set_nonincremental_init_from_string): New
functions.
(pending_init_member): Rename to...
(find_init_member): ...this function. Call set_nonincremental_init
if necessary. Compare values of purpose index trees, not the trees
themselves. Return the actual value, not just non-zero if something
is found.
(output_init_element): Remove checks for duplicates.
If field has zero size, only check the initializer for correctness.
Call set_nonincremental_init if necessary. Push RECORD/ARRAY into AVL
if constructor_incremental is zero. Change error about initializers
not computable at load time into pedwarn.
(output_pending_init_elements): Compare bit positions, not
FIELD_DECLs to take into account zero-sized fields.
(process_init_element): Use constructor_range_stack to fill all
ranges in the designator lists from current level up.
* extend.texi: Update documentation for labeled elements.
* gcc.c-torture/execute/20000801-3.x: Remove.
* gcc.dg/c90-init-1.c: New test.
* gcc.dg/c99-init-1.c: New test.
* gcc.dg/c99-init-2.c: New test.
* gcc.dg/gnu99-init-1.c: New test.
From-SVN: r38968
2001-01-13 00:18:05 +01:00
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@node Case Ranges
|
|
|
|
@section Case Ranges
|
|
|
|
@cindex case ranges
|
|
|
|
@cindex ranges in case statements
|
|
|
|
|
|
|
|
You can specify a range of consecutive values in a single @code{case} label,
|
|
|
|
like this:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
case @var{low} ... @var{high}:
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
This has the same effect as the proper number of individual @code{case}
|
|
|
|
labels, one for each integer value from @var{low} to @var{high}, inclusive.
|
|
|
|
|
|
|
|
This feature is especially useful for ranges of ASCII character codes:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
case 'A' ... 'Z':
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@strong{Be careful:} Write spaces around the @code{...}, for otherwise
|
|
|
|
it may be parsed wrong when you use it with integer values. For example,
|
|
|
|
write this:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
case 1 ... 5:
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
rather than this:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
case 1...5:
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@node Cast to Union
|
|
|
|
@section Cast to a Union Type
|
|
|
|
@cindex cast to a union
|
|
|
|
@cindex union, casting to a
|
|
|
|
|
|
|
|
A cast to union type is similar to other casts, except that the type
|
|
|
|
specified is a union type. You can specify the type either with
|
|
|
|
@code{union @var{tag}} or with a typedef name. A cast to union is actually
|
|
|
|
a constructor though, not a cast, and hence does not yield an lvalue like
|
2001-05-21 01:21:59 +02:00
|
|
|
normal casts. (@xref{Compound Literals}.)
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
The types that may be cast to the union type are those of the members
|
|
|
|
of the union. Thus, given the following union and variables:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
union foo @{ int i; double d; @};
|
|
|
|
int x;
|
|
|
|
double y;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
2001-07-03 02:46:05 +02:00
|
|
|
both @code{x} and @code{y} can be cast to type @code{union foo}.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
Using the cast as the right-hand side of an assignment to a variable of
|
|
|
|
union type is equivalent to storing in a member of the union:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
union foo u;
|
2002-06-24 19:21:04 +02:00
|
|
|
/* @r{@dots{}} */
|
1996-09-24 00:41:16 +02:00
|
|
|
u = (union foo) x @equiv{} u.i = x
|
|
|
|
u = (union foo) y @equiv{} u.d = y
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
You can also use the union cast as a function argument:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
void hack (union foo);
|
2002-06-24 19:21:04 +02:00
|
|
|
/* @r{@dots{}} */
|
1996-09-24 00:41:16 +02:00
|
|
|
hack ((union foo) x);
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-05-21 01:21:59 +02:00
|
|
|
@node Mixed Declarations
|
|
|
|
@section Mixed Declarations and Code
|
|
|
|
@cindex mixed declarations and code
|
|
|
|
@cindex declarations, mixed with code
|
|
|
|
@cindex code, mixed with declarations
|
|
|
|
|
|
|
|
ISO C99 and ISO C++ allow declarations and code to be freely mixed
|
|
|
|
within compound statements. As an extension, GCC also allows this in
|
|
|
|
C89 mode. For example, you could do:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2001-05-21 01:21:59 +02:00
|
|
|
int i;
|
2002-06-24 19:21:04 +02:00
|
|
|
/* @r{@dots{}} */
|
2001-05-21 01:21:59 +02:00
|
|
|
i++;
|
|
|
|
int j = i + 2;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2001-05-21 01:21:59 +02:00
|
|
|
|
|
|
|
Each identifier is visible from where it is declared until the end of
|
|
|
|
the enclosing block.
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@node Function Attributes
|
|
|
|
@section Declaring Attributes of Functions
|
|
|
|
@cindex function attributes
|
|
|
|
@cindex declaring attributes of functions
|
|
|
|
@cindex functions that never return
|
|
|
|
@cindex functions that have no side effects
|
|
|
|
@cindex functions in arbitrary sections
|
2000-07-12 06:29:22 +02:00
|
|
|
@cindex functions that behave like malloc
|
1996-09-24 00:41:16 +02:00
|
|
|
@cindex @code{volatile} applied to function
|
|
|
|
@cindex @code{const} applied to function
|
2000-12-28 19:48:05 +01:00
|
|
|
@cindex functions with @code{printf}, @code{scanf}, @code{strftime} or @code{strfmon} style arguments
|
2002-05-23 17:48:05 +02:00
|
|
|
@cindex functions with non-null pointer arguments
|
1996-09-24 00:41:16 +02:00
|
|
|
@cindex functions that are passed arguments in registers on the 386
|
|
|
|
@cindex functions that pop the argument stack on the 386
|
|
|
|
@cindex functions that do not pop the argument stack on the 386
|
|
|
|
|
|
|
|
In GNU C, you declare certain things about functions called in your program
|
|
|
|
which help the compiler optimize function calls and check your code more
|
|
|
|
carefully.
|
|
|
|
|
|
|
|
The keyword @code{__attribute__} allows you to specify special
|
|
|
|
attributes when making a declaration. This keyword is followed by an
|
2001-10-18 20:29:02 +02:00
|
|
|
attribute specification inside double parentheses. The following
|
2001-10-18 20:43:20 +02:00
|
|
|
attributes are currently defined for functions on all targets:
|
2002-02-22 01:09:04 +01:00
|
|
|
@code{noreturn}, @code{noinline}, @code{always_inline},
|
2004-09-05 04:50:09 +02:00
|
|
|
@code{pure}, @code{const}, @code{nothrow}, @code{sentinel},
|
2001-10-18 20:29:02 +02:00
|
|
|
@code{format}, @code{format_arg}, @code{no_instrument_function},
|
|
|
|
@code{section}, @code{constructor}, @code{destructor}, @code{used},
|
2002-05-23 17:48:05 +02:00
|
|
|
@code{unused}, @code{deprecated}, @code{weak}, @code{malloc},
|
2003-09-16 09:58:27 +02:00
|
|
|
@code{alias}, @code{warn_unused_result} and @code{nonnull}. Several other
|
|
|
|
attributes are defined for functions on particular target systems. Other
|
|
|
|
attributes, including @code{section} are supported for variables declarations
|
2002-05-23 17:48:05 +02:00
|
|
|
(@pxref{Variable Attributes}) and for types (@pxref{Type Attributes}).
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
You may also specify attributes with @samp{__} preceding and following
|
|
|
|
each keyword. This allows you to use them in header files without
|
|
|
|
being concerned about a possible macro of the same name. For example,
|
|
|
|
you may use @code{__noreturn__} instead of @code{noreturn}.
|
|
|
|
|
2001-01-27 22:29:53 +01:00
|
|
|
@xref{Attribute Syntax}, for details of the exact syntax for using
|
|
|
|
attributes.
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@table @code
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
@c Keep this table alphabetized by attribute name. Treat _ as space.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item alias ("@var{target}")
|
|
|
|
@cindex @code{alias} attribute
|
|
|
|
The @code{alias} attribute causes the declaration to be emitted as an
|
|
|
|
alias for another symbol, which must be specified. For instance,
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@smallexample
|
2004-06-23 10:41:55 +02:00
|
|
|
void __f () @{ /* @r{Do something.} */; @}
|
|
|
|
void f () __attribute__ ((weak, alias ("__f")));
|
1996-09-24 00:41:16 +02:00
|
|
|
@end smallexample
|
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
declares @samp{f} to be a weak alias for @samp{__f}. In C++, the
|
|
|
|
mangled name for the target must be used.
|
|
|
|
|
|
|
|
Not all target machines support this attribute.
|
2001-10-18 20:29:02 +02:00
|
|
|
|
2002-02-22 01:09:04 +01:00
|
|
|
@item always_inline
|
2004-06-23 10:41:55 +02:00
|
|
|
@cindex @code{always_inline} function attribute
|
2002-02-22 01:09:04 +01:00
|
|
|
Generally, functions are not inlined unless optimization is specified.
|
|
|
|
For functions declared inline, this attribute inlines the function even
|
|
|
|
if no optimization level was specified.
|
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item cdecl
|
|
|
|
@cindex functions that do pop the argument stack on the 386
|
|
|
|
@opindex mrtd
|
|
|
|
On the Intel 386, the @code{cdecl} attribute causes the compiler to
|
|
|
|
assume that the calling function will pop off the stack space used to
|
|
|
|
pass arguments. This is
|
|
|
|
useful to override the effects of the @option{-mrtd} switch.
|
2000-04-13 15:59:00 +02:00
|
|
|
|
|
|
|
@item const
|
2004-06-23 10:41:55 +02:00
|
|
|
@cindex @code{const} function attribute
|
2000-04-13 15:59:00 +02:00
|
|
|
Many functions do not examine any values except their arguments, and
|
|
|
|
have no effects except the return value. Basically this is just slightly
|
2001-06-13 00:40:00 +02:00
|
|
|
more strict class than the @code{pure} attribute above, since function is not
|
2000-07-12 06:29:22 +02:00
|
|
|
allowed to read global memory.
|
2000-04-13 15:59:00 +02:00
|
|
|
|
|
|
|
@cindex pointer arguments
|
|
|
|
Note that a function that has pointer arguments and examines the data
|
|
|
|
pointed to must @emph{not} be declared @code{const}. Likewise, a
|
|
|
|
function that calls a non-@code{const} function usually must not be
|
|
|
|
@code{const}. It does not make sense for a @code{const} function to
|
|
|
|
return @code{void}.
|
|
|
|
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
The attribute @code{const} is not implemented in GCC versions earlier
|
1996-09-24 00:41:16 +02:00
|
|
|
than 2.5. An alternative way to declare that a function has no side
|
|
|
|
effects, which works in the current version and in some older versions,
|
|
|
|
is as follows:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
typedef int intfn ();
|
|
|
|
|
|
|
|
extern const intfn square;
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
This approach does not work in GNU C++ from 2.6.0 on, since the language
|
|
|
|
specifies that the @samp{const} must be attached to the return value.
|
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item constructor
|
|
|
|
@itemx destructor
|
|
|
|
@cindex @code{constructor} function attribute
|
|
|
|
@cindex @code{destructor} function attribute
|
|
|
|
The @code{constructor} attribute causes the function to be called
|
|
|
|
automatically before execution enters @code{main ()}. Similarly, the
|
|
|
|
@code{destructor} attribute causes the function to be called
|
|
|
|
automatically after @code{main ()} has completed or @code{exit ()} has
|
|
|
|
been called. Functions with these attributes are useful for
|
|
|
|
initializing data that will be used implicitly during the execution of
|
|
|
|
the program.
|
|
|
|
|
|
|
|
These attributes are not currently implemented for Objective-C@.
|
|
|
|
|
|
|
|
@item deprecated
|
|
|
|
@cindex @code{deprecated} attribute.
|
|
|
|
The @code{deprecated} attribute results in a warning if the function
|
|
|
|
is used anywhere in the source file. This is useful when identifying
|
|
|
|
functions that are expected to be removed in a future version of a
|
|
|
|
program. The warning also includes the location of the declaration
|
|
|
|
of the deprecated function, to enable users to easily find further
|
|
|
|
information about why the function is deprecated, or what they should
|
|
|
|
do instead. Note that the warnings only occurs for uses:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
int old_fn () __attribute__ ((deprecated));
|
|
|
|
int old_fn ();
|
|
|
|
int (*fn_ptr)() = old_fn;
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
results in a warning on line 3 but not line 2.
|
|
|
|
|
|
|
|
The @code{deprecated} attribute can also be used for variables and
|
|
|
|
types (@pxref{Variable Attributes}, @pxref{Type Attributes}.)
|
|
|
|
|
|
|
|
@item dllexport
|
|
|
|
@cindex @code{__declspec(dllexport)}
|
2004-08-06 04:03:29 +02:00
|
|
|
On Microsoft Windows targets and Symbian OS targets the
|
|
|
|
@code{dllexport} attribute causes the compiler to provide a global
|
|
|
|
pointer to a pointer in a DLL, so that it can be referenced with the
|
|
|
|
@code{dllimport} attribute. On Microsoft Windows targets, the pointer
|
|
|
|
name is formed by combining @code{_imp__} and the function or variable
|
|
|
|
name.
|
|
|
|
|
|
|
|
You can use @code{__declspec(dllexport)} as a synonym for
|
|
|
|
@code{__attribute__ ((dllexport))} for compatibility with other
|
|
|
|
compilers.
|
|
|
|
|
|
|
|
On systems that support the @code{visibility} attribute, this
|
|
|
|
attribute also implies ``default'' visibility, unless a
|
|
|
|
@code{visibility} attribute is explicitly specified. You should avoid
|
|
|
|
the use of @code{dllexport} with ``hidden'' or ``internal''
|
|
|
|
visibility; in the future GCC may issue an error for those cases.
|
2004-06-23 10:41:55 +02:00
|
|
|
|
2004-08-06 04:03:29 +02:00
|
|
|
Currently, the @code{dllexport} attribute is ignored for inlined
|
|
|
|
functions, unless the @option{-fkeep-inline-functions} flag has been
|
|
|
|
used. The attribute is also ignored for undefined symbols.
|
2004-06-23 10:41:55 +02:00
|
|
|
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
When applied to C++ classes, the attribute marks defined non-inlined
|
|
|
|
member functions and static data members as exports. Static consts
|
2004-06-23 10:41:55 +02:00
|
|
|
initialized in-class are not marked unless they are also defined
|
|
|
|
out-of-class.
|
|
|
|
|
2004-07-12 10:45:00 +02:00
|
|
|
For Microsoft Windows targets there are alternative methods for
|
2004-08-06 04:03:29 +02:00
|
|
|
including the symbol in the DLL's export table such as using a
|
2004-07-12 10:45:00 +02:00
|
|
|
@file{.def} file with an @code{EXPORTS} section or, with GNU ld, using
|
|
|
|
the @option{--export-all} linker flag.
|
2004-06-23 10:41:55 +02:00
|
|
|
|
|
|
|
@item dllimport
|
|
|
|
@cindex @code{__declspec(dllimport)}
|
2004-08-06 04:03:29 +02:00
|
|
|
On Microsoft Windows and Symbian OS targets, the @code{dllimport}
|
2004-07-12 10:45:00 +02:00
|
|
|
attribute causes the compiler to reference a function or variable via
|
2004-08-06 04:03:29 +02:00
|
|
|
a global pointer to a pointer that is set up by the DLL exporting the
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
symbol. The attribute implies @code{extern} storage. On Microsoft
|
2004-08-06 04:03:29 +02:00
|
|
|
Windows targets, the pointer name is formed by combining @code{_imp__}
|
|
|
|
and the function or variable name.
|
|
|
|
|
|
|
|
You can use @code{__declspec(dllimport)} as a synonym for
|
|
|
|
@code{__attribute__ ((dllimport))} for compatibility with other
|
|
|
|
compilers.
|
2004-06-23 10:41:55 +02:00
|
|
|
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
Currently, the attribute is ignored for inlined functions. If the
|
2004-06-23 10:41:55 +02:00
|
|
|
attribute is applied to a symbol @emph{definition}, an error is reported.
|
|
|
|
If a symbol previously declared @code{dllimport} is later defined, the
|
|
|
|
attribute is ignored in subsequent references, and a warning is emitted.
|
|
|
|
The attribute is also overridden by a subsequent declaration as
|
|
|
|
@code{dllexport}.
|
|
|
|
|
|
|
|
When applied to C++ classes, the attribute marks non-inlined
|
|
|
|
member functions and static data members as imports. However, the
|
|
|
|
attribute is ignored for virtual methods to allow creation of vtables
|
|
|
|
using thunks.
|
|
|
|
|
2004-08-06 04:03:29 +02:00
|
|
|
On the SH Symbian OS target the @code{dllimport} attribute also has
|
contrib.texi, [...]: Improve Texinfo formatting.
* doc/contrib.texi, doc/cpp.texi, doc/cppopts.texi,
doc/extend.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/sourcebuild.texi, doc/tm.texi: Improve Texinfo formatting.
From-SVN: r89725
2004-10-28 03:00:31 +02:00
|
|
|
another affect---it can cause the vtable and run-time type information
|
2004-08-06 04:03:29 +02:00
|
|
|
for a class to be exported. This happens when the class has a
|
|
|
|
dllimport'ed constructor or a non-inline, non-pure virtual function
|
|
|
|
and, for either of those two conditions, the class also has a inline
|
|
|
|
constructor or destructor and has a key function that is defined in
|
|
|
|
the current translation unit.
|
2004-07-12 10:45:00 +02:00
|
|
|
|
|
|
|
For Microsoft Windows based targets the use of the @code{dllimport}
|
|
|
|
attribute on functions is not necessary, but provides a small
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
performance benefit by eliminating a thunk in the DLL@. The use of the
|
2004-07-12 10:45:00 +02:00
|
|
|
@code{dllimport} attribute on imported variables was required on older
|
2004-08-06 04:03:29 +02:00
|
|
|
versions of the GNU linker, but can now be avoided by passing the
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
@option{--enable-auto-import} switch to the GNU linker. As with
|
2004-08-06 04:03:29 +02:00
|
|
|
functions, using the attribute for a variable eliminates a thunk in
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
the DLL@.
|
2004-08-06 04:03:29 +02:00
|
|
|
|
|
|
|
One drawback to using this attribute is that a pointer to a function
|
|
|
|
or variable marked as @code{dllimport} cannot be used as a constant
|
|
|
|
address. On Microsoft Windows targets, the attribute can be disabled
|
|
|
|
for functions by setting the @option{-mnop-fun-dllimport} flag.
|
2004-06-23 10:41:55 +02:00
|
|
|
|
|
|
|
@item eightbit_data
|
|
|
|
@cindex eight bit data on the H8/300, H8/300H, and H8S
|
|
|
|
Use this attribute on the H8/300, H8/300H, and H8S to indicate that the specified
|
|
|
|
variable should be placed into the eight bit data section.
|
|
|
|
The compiler will generate more efficient code for certain operations
|
|
|
|
on data in the eight bit data area. Note the eight bit data area is limited to
|
|
|
|
256 bytes of data.
|
|
|
|
|
|
|
|
You must use GAS and GLD from GNU binutils version 2.7 or later for
|
|
|
|
this attribute to work correctly.
|
|
|
|
|
|
|
|
@item far
|
|
|
|
@cindex functions which handle memory bank switching
|
|
|
|
On 68HC11 and 68HC12 the @code{far} attribute causes the compiler to
|
|
|
|
use a calling convention that takes care of switching memory banks when
|
|
|
|
entering and leaving a function. This calling convention is also the
|
|
|
|
default when using the @option{-mlong-calls} option.
|
|
|
|
|
|
|
|
On 68HC12 the compiler will use the @code{call} and @code{rtc} instructions
|
|
|
|
to call and return from a function.
|
|
|
|
|
|
|
|
On 68HC11 the compiler will generate a sequence of instructions
|
|
|
|
to invoke a board-specific routine to switch the memory bank and call the
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
real function. The board-specific routine simulates a @code{call}.
|
2004-06-23 10:41:55 +02:00
|
|
|
At the end of a function, it will jump to a board-specific routine
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
instead of using @code{rts}. The board-specific return routine simulates
|
2004-06-23 10:41:55 +02:00
|
|
|
the @code{rtc}.
|
|
|
|
|
|
|
|
@item fastcall
|
|
|
|
@cindex functions that pop the argument stack on the 386
|
|
|
|
On the Intel 386, the @code{fastcall} attribute causes the compiler to
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
pass the first two arguments in the registers ECX and EDX@. Subsequent
|
|
|
|
arguments are passed on the stack. The called function will pop the
|
|
|
|
arguments off the stack. If the number of arguments is variable all
|
2004-06-23 10:41:55 +02:00
|
|
|
arguments are pushed on the stack.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@item format (@var{archetype}, @var{string-index}, @var{first-to-check})
|
|
|
|
@cindex @code{format} function attribute
|
2001-06-13 00:40:00 +02:00
|
|
|
@opindex Wformat
|
1998-04-12 21:52:16 +02:00
|
|
|
The @code{format} attribute specifies that a function takes @code{printf},
|
2000-12-28 19:48:05 +01:00
|
|
|
@code{scanf}, @code{strftime} or @code{strfmon} style arguments which
|
|
|
|
should be type-checked against a format string. For example, the
|
|
|
|
declaration:
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@smallexample
|
|
|
|
extern int
|
|
|
|
my_printf (void *my_object, const char *my_format, ...)
|
|
|
|
__attribute__ ((format (printf, 2, 3)));
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@noindent
|
|
|
|
causes the compiler to check the arguments in calls to @code{my_printf}
|
|
|
|
for consistency with the @code{printf} style format string argument
|
|
|
|
@code{my_format}.
|
|
|
|
|
|
|
|
The parameter @var{archetype} determines how the format string is
|
2000-12-28 19:48:05 +01:00
|
|
|
interpreted, and should be @code{printf}, @code{scanf}, @code{strftime}
|
|
|
|
or @code{strfmon}. (You can also use @code{__printf__},
|
|
|
|
@code{__scanf__}, @code{__strftime__} or @code{__strfmon__}.) The
|
1996-09-24 00:41:16 +02:00
|
|
|
parameter @var{string-index} specifies which argument is the format
|
|
|
|
string argument (starting from 1), while @var{first-to-check} is the
|
|
|
|
number of the first argument to check against the format string. For
|
|
|
|
functions where the arguments are not available to be checked (such as
|
|
|
|
@code{vprintf}), specify the third parameter as zero. In this case the
|
2000-11-29 08:38:20 +01:00
|
|
|
compiler only checks the format string for consistency. For
|
|
|
|
@code{strftime} formats, the third parameter is required to be zero.
|
2003-02-18 11:51:57 +01:00
|
|
|
Since non-static C++ methods have an implicit @code{this} argument, the
|
|
|
|
arguments of such methods should be counted from two, not one, when
|
|
|
|
giving values for @var{string-index} and @var{first-to-check}.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
In the example above, the format string (@code{my_format}) is the second
|
|
|
|
argument of the function @code{my_print}, and the arguments to check
|
|
|
|
start with the third argument, so the correct parameters for the format
|
|
|
|
attribute are 2 and 3.
|
|
|
|
|
2001-06-13 00:40:00 +02:00
|
|
|
@opindex ffreestanding
|
2004-09-23 18:11:24 +02:00
|
|
|
@opindex fno-builtin
|
1996-09-24 00:41:16 +02:00
|
|
|
The @code{format} attribute allows you to identify your own functions
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
which take format strings as arguments, so that GCC can check the
|
2000-11-29 08:38:20 +01:00
|
|
|
calls to these functions for errors. The compiler always (unless
|
2004-09-23 18:11:24 +02:00
|
|
|
@option{-ffreestanding} or @option{-fno-builtin} is used) checks formats
|
2000-11-29 08:38:20 +01:00
|
|
|
for the standard library functions @code{printf}, @code{fprintf},
|
1998-04-12 21:52:16 +02:00
|
|
|
@code{sprintf}, @code{scanf}, @code{fscanf}, @code{sscanf}, @code{strftime},
|
1996-09-24 00:41:16 +02:00
|
|
|
@code{vprintf}, @code{vfprintf} and @code{vsprintf} whenever such
|
2001-06-13 00:40:00 +02:00
|
|
|
warnings are requested (using @option{-Wformat}), so there is no need to
|
2000-11-29 08:38:20 +01:00
|
|
|
modify the header file @file{stdio.h}. In C99 mode, the functions
|
|
|
|
@code{snprintf}, @code{vsnprintf}, @code{vscanf}, @code{vfscanf} and
|
2000-12-28 19:48:05 +01:00
|
|
|
@code{vsscanf} are also checked. Except in strictly conforming C
|
2001-12-21 03:36:37 +01:00
|
|
|
standard modes, the X/Open function @code{strfmon} is also checked as
|
|
|
|
are @code{printf_unlocked} and @code{fprintf_unlocked}.
|
2000-11-29 08:38:20 +01:00
|
|
|
@xref{C Dialect Options,,Options Controlling C Dialect}.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2004-07-19 16:48:09 +02:00
|
|
|
The target may provide additional types of format checks.
|
|
|
|
@xref{Target Format Checks,,Format Checks Specific to Particular
|
|
|
|
Target Machines}.
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@item format_arg (@var{string-index})
|
|
|
|
@cindex @code{format_arg} function attribute
|
2001-06-13 00:40:00 +02:00
|
|
|
@opindex Wformat-nonliteral
|
2000-12-28 19:48:05 +01:00
|
|
|
The @code{format_arg} attribute specifies that a function takes a format
|
|
|
|
string for a @code{printf}, @code{scanf}, @code{strftime} or
|
|
|
|
@code{strfmon} style function and modifies it (for example, to translate
|
|
|
|
it into another language), so the result can be passed to a
|
|
|
|
@code{printf}, @code{scanf}, @code{strftime} or @code{strfmon} style
|
|
|
|
function (with the remaining arguments to the format function the same
|
|
|
|
as they would have been for the unmodified string). For example, the
|
|
|
|
declaration:
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@smallexample
|
|
|
|
extern char *
|
|
|
|
my_dgettext (char *my_domain, const char *my_format)
|
|
|
|
__attribute__ ((format_arg (2)));
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@noindent
|
2000-12-28 19:48:05 +01:00
|
|
|
causes the compiler to check the arguments in calls to a @code{printf},
|
|
|
|
@code{scanf}, @code{strftime} or @code{strfmon} type function, whose
|
|
|
|
format string argument is a call to the @code{my_dgettext} function, for
|
|
|
|
consistency with the format string argument @code{my_format}. If the
|
|
|
|
@code{format_arg} attribute had not been specified, all the compiler
|
|
|
|
could tell in such calls to format functions would be that the format
|
|
|
|
string argument is not constant; this would generate a warning when
|
2001-06-13 00:40:00 +02:00
|
|
|
@option{-Wformat-nonliteral} is used, but the calls could not be checked
|
2000-12-28 19:48:05 +01:00
|
|
|
without the attribute.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
The parameter @var{string-index} specifies which argument is the format
|
2003-02-18 11:51:57 +01:00
|
|
|
string argument (starting from one). Since non-static C++ methods have
|
|
|
|
an implicit @code{this} argument, the arguments of such methods should
|
|
|
|
be counted from two.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
The @code{format-arg} attribute allows you to identify your own
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
functions which modify format strings, so that GCC can check the
|
2000-12-28 19:48:05 +01:00
|
|
|
calls to @code{printf}, @code{scanf}, @code{strftime} or @code{strfmon}
|
|
|
|
type function whose operands are a call to one of your own function.
|
|
|
|
The compiler always treats @code{gettext}, @code{dgettext}, and
|
|
|
|
@code{dcgettext} in this manner except when strict ISO C support is
|
2001-06-13 00:40:00 +02:00
|
|
|
requested by @option{-ansi} or an appropriate @option{-std} option, or
|
2004-09-23 18:11:24 +02:00
|
|
|
@option{-ffreestanding} or @option{-fno-builtin}
|
|
|
|
is used. @xref{C Dialect Options,,Options
|
2000-12-28 19:48:05 +01:00
|
|
|
Controlling C Dialect}.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item function_vector
|
|
|
|
@cindex calling functions through the function vector on the H8/300 processors
|
|
|
|
Use this attribute on the H8/300, H8/300H, and H8S to indicate that the specified
|
|
|
|
function should be called through the function vector. Calling a
|
|
|
|
function through the function vector will reduce code size, however;
|
|
|
|
the function vector has a limited size (maximum 128 entries on the H8/300
|
|
|
|
and 64 entries on the H8/300H and H8S) and shares space with the interrupt vector.
|
2002-05-23 17:48:05 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
You must use GAS and GLD from GNU binutils version 2.7 or later for
|
|
|
|
this attribute to work correctly.
|
2002-05-23 17:48:05 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item interrupt
|
|
|
|
@cindex interrupt handler functions
|
|
|
|
Use this attribute on the ARM, AVR, C4x, M32R/D and Xstormy16 ports to indicate
|
|
|
|
that the specified function is an interrupt handler. The compiler will
|
|
|
|
generate function entry and exit sequences suitable for use in an
|
|
|
|
interrupt handler when this attribute is present.
|
2002-05-23 17:48:05 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
Note, interrupt handlers for the m68k, H8/300, H8/300H, H8S, and SH processors
|
|
|
|
can be specified via the @code{interrupt_handler} attribute.
|
2002-05-23 17:48:05 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
Note, on the AVR, interrupts will be enabled inside the function.
|
2001-10-18 20:29:02 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
Note, for the ARM, you can specify the kind of interrupt to be handled by
|
|
|
|
adding an optional parameter to the interrupt attribute like this:
|
2002-01-10 19:51:24 +01:00
|
|
|
|
|
|
|
@smallexample
|
2004-06-23 10:41:55 +02:00
|
|
|
void f () __attribute__ ((interrupt ("IRQ")));
|
2002-01-10 19:51:24 +01:00
|
|
|
@end smallexample
|
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
Permissible values for this parameter are: IRQ, FIQ, SWI, ABORT and UNDEF@.
|
2002-01-10 19:51:24 +01:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item interrupt_handler
|
|
|
|
@cindex interrupt handler functions on the m68k, H8/300 and SH processors
|
|
|
|
Use this attribute on the m68k, H8/300, H8/300H, H8S, and SH to indicate that
|
|
|
|
the specified function is an interrupt handler. The compiler will generate
|
|
|
|
function entry and exit sequences suitable for use in an interrupt
|
|
|
|
handler when this attribute is present.
|
2003-09-16 09:58:27 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item long_call/short_call
|
|
|
|
@cindex indirect calls on ARM
|
|
|
|
This attribute specifies how a particular function is called on
|
|
|
|
ARM@. Both attributes override the @option{-mlong-calls} (@pxref{ARM Options})
|
|
|
|
command line switch and @code{#pragma long_calls} settings. The
|
|
|
|
@code{long_call} attribute causes the compiler to always call the
|
|
|
|
function by first loading its address into a register and then using the
|
|
|
|
contents of that register. The @code{short_call} attribute always places
|
|
|
|
the offset to the function from the call site into the @samp{BL}
|
|
|
|
instruction directly.
|
2003-09-16 09:58:27 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item longcall/shortcall
|
|
|
|
@cindex functions called via pointer on the RS/6000 and PowerPC
|
|
|
|
On the RS/6000 and PowerPC, the @code{longcall} attribute causes the
|
|
|
|
compiler to always call this function via a pointer, just as it would if
|
|
|
|
the @option{-mlongcall} option had been specified. The @code{shortcall}
|
|
|
|
attribute causes the compiler not to do this. These attributes override
|
|
|
|
both the @option{-mlongcall} switch and the @code{#pragma longcall}
|
|
|
|
setting.
|
2003-09-16 09:58:27 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@xref{RS/6000 and PowerPC Options}, for more information on whether long
|
|
|
|
calls are necessary.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
1999-11-28 21:45:34 +01:00
|
|
|
@item malloc
|
|
|
|
@cindex @code{malloc} attribute
|
|
|
|
The @code{malloc} attribute is used to tell the compiler that a function
|
2004-01-04 21:37:52 +01:00
|
|
|
may be treated as if any non-@code{NULL} pointer it returns cannot
|
|
|
|
alias any other pointer valid when the function returns.
|
1999-11-28 21:45:34 +01:00
|
|
|
This will often improve optimization.
|
2004-01-04 21:37:52 +01:00
|
|
|
Standard functions with this property include @code{malloc} and
|
|
|
|
@code{calloc}. @code{realloc}-like functions have this property as
|
|
|
|
long as the old pointer is never referred to (including comparing it
|
|
|
|
to the new pointer) after the function returns a non-@code{NULL}
|
|
|
|
value.
|
1999-11-28 21:45:34 +01:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item model (@var{model-name})
|
|
|
|
@cindex function addressability on the M32R/D
|
|
|
|
@cindex variable addressability on the IA-64
|
|
|
|
|
|
|
|
On the M32R/D, use this attribute to set the addressability of an
|
|
|
|
object, and of the code generated for a function. The identifier
|
|
|
|
@var{model-name} is one of @code{small}, @code{medium}, or
|
|
|
|
@code{large}, representing each of the code models.
|
|
|
|
|
|
|
|
Small model objects live in the lower 16MB of memory (so that their
|
|
|
|
addresses can be loaded with the @code{ld24} instruction), and are
|
|
|
|
callable with the @code{bl} instruction.
|
|
|
|
|
|
|
|
Medium model objects may live anywhere in the 32-bit address space (the
|
|
|
|
compiler will generate @code{seth/add3} instructions to load their addresses),
|
|
|
|
and are callable with the @code{bl} instruction.
|
|
|
|
|
|
|
|
Large model objects may live anywhere in the 32-bit address space (the
|
|
|
|
compiler will generate @code{seth/add3} instructions to load their addresses),
|
|
|
|
and may not be reachable with the @code{bl} instruction (the compiler will
|
|
|
|
generate the much slower @code{seth/add3/jl} instruction sequence).
|
|
|
|
|
|
|
|
On IA-64, use this attribute to set the addressability of an object.
|
|
|
|
At present, the only supported identifier for @var{model-name} is
|
|
|
|
@code{small}, indicating addressability via ``small'' (22-bit)
|
|
|
|
addresses (so that their addresses can be loaded with the @code{addl}
|
|
|
|
instruction). Caveat: such addressing is by definition not position
|
|
|
|
independent and hence this attribute must not be used for objects
|
|
|
|
defined by shared libraries.
|
|
|
|
|
|
|
|
@item naked
|
|
|
|
@cindex function without a prologue/epilogue code
|
|
|
|
Use this attribute on the ARM, AVR, C4x and IP2K ports to indicate that the
|
|
|
|
specified function does not need prologue/epilogue sequences generated by
|
|
|
|
the compiler. It is up to the programmer to provide these sequences.
|
|
|
|
|
|
|
|
@item near
|
|
|
|
@cindex functions which do not handle memory bank switching on 68HC11/68HC12
|
|
|
|
On 68HC11 and 68HC12 the @code{near} attribute causes the compiler to
|
|
|
|
use the normal calling convention based on @code{jsr} and @code{rts}.
|
|
|
|
This attribute can be used to cancel the effect of the @option{-mlong-calls}
|
|
|
|
option.
|
|
|
|
|
|
|
|
@item no_instrument_function
|
|
|
|
@cindex @code{no_instrument_function} function attribute
|
|
|
|
@opindex finstrument-functions
|
|
|
|
If @option{-finstrument-functions} is given, profiling function calls will
|
|
|
|
be generated at entry and exit of most user-compiled functions.
|
|
|
|
Functions with this attribute will not be so instrumented.
|
|
|
|
|
|
|
|
@item noinline
|
|
|
|
@cindex @code{noinline} function attribute
|
|
|
|
This function attribute prevents a function from being considered for
|
|
|
|
inlining.
|
|
|
|
|
|
|
|
@item nonnull (@var{arg-index}, @dots{})
|
|
|
|
@cindex @code{nonnull} function attribute
|
|
|
|
The @code{nonnull} attribute specifies that some function parameters should
|
|
|
|
be non-null pointers. For instance, the declaration:
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@smallexample
|
2004-06-23 10:41:55 +02:00
|
|
|
extern void *
|
|
|
|
my_memcpy (void *dest, const void *src, size_t len)
|
|
|
|
__attribute__((nonnull (1, 2)));
|
1996-09-24 00:41:16 +02:00
|
|
|
@end smallexample
|
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@noindent
|
|
|
|
causes the compiler to check that, in calls to @code{my_memcpy},
|
|
|
|
arguments @var{dest} and @var{src} are non-null. If the compiler
|
|
|
|
determines that a null pointer is passed in an argument slot marked
|
|
|
|
as non-null, and the @option{-Wnonnull} option is enabled, a warning
|
|
|
|
is issued. The compiler may also choose to make optimizations based
|
|
|
|
on the knowledge that certain function arguments will not be null.
|
1997-01-19 20:27:06 +01:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
If no argument index list is given to the @code{nonnull} attribute,
|
|
|
|
all pointer arguments are marked as non-null. To illustrate, the
|
|
|
|
following declaration is equivalent to the previous example:
|
2002-02-26 22:17:22 +01:00
|
|
|
|
|
|
|
@smallexample
|
2004-06-23 10:41:55 +02:00
|
|
|
extern void *
|
|
|
|
my_memcpy (void *dest, const void *src, size_t len)
|
|
|
|
__attribute__((nonnull));
|
2002-02-26 22:17:22 +01:00
|
|
|
@end smallexample
|
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item noreturn
|
|
|
|
@cindex @code{noreturn} function attribute
|
|
|
|
A few standard library functions, such as @code{abort} and @code{exit},
|
|
|
|
cannot return. GCC knows this automatically. Some programs define
|
|
|
|
their own functions that never return. You can declare them
|
|
|
|
@code{noreturn} to tell the compiler this fact. For example,
|
2002-03-03 06:20:04 +01:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@smallexample
|
|
|
|
@group
|
|
|
|
void fatal () __attribute__ ((noreturn));
|
2002-11-27 07:32:13 +01:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
void
|
|
|
|
fatal (/* @r{@dots{}} */)
|
|
|
|
@{
|
|
|
|
/* @r{@dots{}} */ /* @r{Print error message.} */ /* @r{@dots{}} */
|
|
|
|
exit (1);
|
|
|
|
@}
|
|
|
|
@end group
|
|
|
|
@end smallexample
|
2002-03-03 06:20:04 +01:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
The @code{noreturn} keyword tells the compiler to assume that
|
|
|
|
@code{fatal} cannot return. It can then optimize without regard to what
|
|
|
|
would happen if @code{fatal} ever did return. This makes slightly
|
|
|
|
better code. More importantly, it helps avoid spurious warnings of
|
|
|
|
uninitialized variables.
|
2002-03-03 06:20:04 +01:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
The @code{noreturn} keyword does not affect the exceptional path when that
|
|
|
|
applies: a @code{noreturn}-marked function may still return to the caller
|
2004-09-24 22:27:25 +02:00
|
|
|
by throwing an exception or calling @code{longjmp}.
|
2002-03-03 06:20:04 +01:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
Do not assume that registers saved by the calling function are
|
|
|
|
restored before calling the @code{noreturn} function.
|
2002-02-26 22:17:22 +01:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
It does not make sense for a @code{noreturn} function to have a return
|
|
|
|
type other than @code{void}.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
The attribute @code{noreturn} is not implemented in GCC versions
|
|
|
|
earlier than 2.5. An alternative way to declare that a function does
|
|
|
|
not return, which works in the current version and in some older
|
|
|
|
versions, is as follows:
|
2003-05-21 00:13:34 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@smallexample
|
|
|
|
typedef void voidfn ();
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
volatile voidfn fatal;
|
|
|
|
@end smallexample
|
2002-12-19 23:00:33 +01:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item nothrow
|
|
|
|
@cindex @code{nothrow} function attribute
|
|
|
|
The @code{nothrow} attribute is used to inform the compiler that a
|
|
|
|
function cannot throw an exception. For example, most functions in
|
|
|
|
the standard C library can be guaranteed not to throw an exception
|
|
|
|
with the notable exceptions of @code{qsort} and @code{bsearch} that
|
|
|
|
take function pointer arguments. The @code{nothrow} attribute is not
|
2004-09-10 00:43:53 +02:00
|
|
|
implemented in GCC versions earlier than 3.3.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item pure
|
|
|
|
@cindex @code{pure} function attribute
|
|
|
|
Many functions have no effects except the return value and their
|
|
|
|
return value depends only on the parameters and/or global variables.
|
|
|
|
Such a function can be subject
|
|
|
|
to common subexpression elimination and loop optimization just as an
|
|
|
|
arithmetic operator would be. These functions should be declared
|
|
|
|
with the attribute @code{pure}. For example,
|
2002-05-11 18:25:05 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@smallexample
|
|
|
|
int square (int) __attribute__ ((pure));
|
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@noindent
|
|
|
|
says that the hypothetical function @code{square} is safe to call
|
|
|
|
fewer times than the program says.
|
2000-02-29 02:42:52 +01:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
Some of common examples of pure functions are @code{strlen} or @code{memcmp}.
|
|
|
|
Interesting non-pure functions are functions with infinite loops or those
|
|
|
|
depending on volatile memory or other system resource, that may change between
|
|
|
|
two consecutive calls (such as @code{feof} in a multithreading environment).
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
The attribute @code{pure} is not implemented in GCC versions earlier
|
|
|
|
than 2.96.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item regparm (@var{number})
|
|
|
|
@cindex @code{regparm} attribute
|
|
|
|
@cindex functions that are passed arguments in registers on the 386
|
|
|
|
On the Intel 386, the @code{regparm} attribute causes the compiler to
|
|
|
|
pass up to @var{number} integer arguments in registers EAX,
|
|
|
|
EDX, and ECX instead of on the stack. Functions that take a
|
|
|
|
variable number of arguments will continue to be passed all of their
|
|
|
|
arguments on the stack.
|
2000-12-08 20:25:33 +01:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
Beware that on some ELF systems this attribute is unsuitable for
|
|
|
|
global functions in shared libraries with lazy binding (which is the
|
|
|
|
default). Lazy binding will send the first call via resolving code in
|
|
|
|
the loader, which might assume EAX, EDX and ECX can be clobbered, as
|
|
|
|
per the standard calling conventions. Solaris 8 is affected by this.
|
|
|
|
GNU systems with GLIBC 2.1 or higher, and FreeBSD, are believed to be
|
|
|
|
safe since the loaders there save all registers. (Lazy binding can be
|
|
|
|
disabled with the linker or the loader if desired, to avoid the
|
|
|
|
problem.)
|
2000-12-08 20:25:33 +01:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item saveall
|
|
|
|
@cindex save all registers on the H8/300, H8/300H, and H8S
|
|
|
|
Use this attribute on the H8/300, H8/300H, and H8S to indicate that
|
|
|
|
all registers except the stack pointer should be saved in the prologue
|
|
|
|
regardless of whether they are used or not.
|
2000-12-08 20:25:33 +01:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item section ("@var{section-name}")
|
|
|
|
@cindex @code{section} function attribute
|
|
|
|
Normally, the compiler places the code it generates in the @code{text} section.
|
|
|
|
Sometimes, however, you need additional sections, or you need certain
|
|
|
|
particular functions to appear in special sections. The @code{section}
|
|
|
|
attribute specifies that a function lives in a particular section.
|
|
|
|
For example, the declaration:
|
2000-12-08 20:25:33 +01:00
|
|
|
|
|
|
|
@smallexample
|
2004-06-23 10:41:55 +02:00
|
|
|
extern void foobar (void) __attribute__ ((section ("bar")));
|
2000-12-08 20:25:33 +01:00
|
|
|
@end smallexample
|
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@noindent
|
|
|
|
puts the function @code{foobar} in the @code{bar} section.
|
2000-12-08 20:25:33 +01:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
Some file formats do not support arbitrary sections so the @code{section}
|
|
|
|
attribute is not available on all platforms.
|
|
|
|
If you need to map the entire contents of a module to a particular
|
|
|
|
section, consider using the facilities of the linker instead.
|
|
|
|
|
2004-09-05 04:50:09 +02:00
|
|
|
@item sentinel
|
|
|
|
@cindex @code{sentinel} function attribute
|
2004-09-05 04:55:28 +02:00
|
|
|
This function attribute ensures that a parameter in a function call is
|
|
|
|
an explicit @code{NULL}. The attribute is only valid on variadic
|
|
|
|
functions. By default, the sentinel is located at position zero, the
|
|
|
|
last parameter of the function call. If an optional integer position
|
|
|
|
argument P is supplied to the attribute, the sentinel must be located at
|
|
|
|
position P counting backwards from the end of the argument list.
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
__attribute__ ((sentinel))
|
|
|
|
is equivalent to
|
|
|
|
__attribute__ ((sentinel(0)))
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
The attribute is automatically set with a position of 0 for the built-in
|
|
|
|
functions @code{execl} and @code{execlp}. The built-in function
|
2004-09-17 19:24:17 +02:00
|
|
|
@code{execle} has the attribute set with a position of 1.
|
2004-09-05 04:55:28 +02:00
|
|
|
|
|
|
|
A valid @code{NULL} in this context is defined as zero with any pointer
|
|
|
|
type. If your system defines the @code{NULL} macro with an integer type
|
|
|
|
then you need to add an explicit cast. GCC replaces @code{stddef.h}
|
|
|
|
with a copy that redefines NULL appropriately.
|
|
|
|
|
|
|
|
The warnings for missing or incorrect sentinels are enabled with
|
|
|
|
@option{-Wformat}.
|
2004-09-05 04:50:09 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item short_call
|
|
|
|
See long_call/short_call.
|
|
|
|
|
|
|
|
@item shortcall
|
|
|
|
See longcall/shortcall.
|
|
|
|
|
|
|
|
@item signal
|
|
|
|
@cindex signal handler functions on the AVR processors
|
|
|
|
Use this attribute on the AVR to indicate that the specified
|
|
|
|
function is a signal handler. The compiler will generate function
|
|
|
|
entry and exit sequences suitable for use in a signal handler when this
|
|
|
|
attribute is present. Interrupts will be disabled inside the function.
|
2001-06-13 04:09:18 +02:00
|
|
|
|
|
|
|
@item sp_switch
|
2002-01-16 22:00:15 +01:00
|
|
|
Use this attribute on the SH to indicate an @code{interrupt_handler}
|
2001-06-13 04:09:18 +02:00
|
|
|
function should switch to an alternate stack. It expects a string
|
|
|
|
argument that names a global variable holding the address of the
|
|
|
|
alternate stack.
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
void *alt_stack;
|
2001-07-03 02:46:05 +02:00
|
|
|
void f () __attribute__ ((interrupt_handler,
|
|
|
|
sp_switch ("alt_stack")));
|
2001-06-13 04:09:18 +02:00
|
|
|
@end smallexample
|
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item stdcall
|
|
|
|
@cindex functions that pop the argument stack on the 386
|
|
|
|
On the Intel 386, the @code{stdcall} attribute causes the compiler to
|
|
|
|
assume that the called function will pop off the stack space used to
|
|
|
|
pass arguments, unless it takes a variable number of arguments.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@item tiny_data
|
2003-10-22 20:22:09 +02:00
|
|
|
@cindex tiny data section on the H8/300H and H8S
|
|
|
|
Use this attribute on the H8/300H and H8S to indicate that the specified
|
1996-09-24 00:41:16 +02:00
|
|
|
variable should be placed into the tiny data section.
|
|
|
|
The compiler will generate more efficient code for loads and stores
|
|
|
|
on data in the tiny data section. Note the tiny data area is limited to
|
|
|
|
slightly under 32kbytes of data.
|
1997-03-24 21:53:34 +01:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item trap_exit
|
|
|
|
Use this attribute on the SH for an @code{interrupt_handler} to return using
|
|
|
|
@code{trapa} instead of @code{rte}. This attribute expects an integer
|
|
|
|
argument specifying the trap number to be used.
|
1997-03-24 21:53:34 +01:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item unused
|
|
|
|
@cindex @code{unused} attribute.
|
|
|
|
This attribute, attached to a function, means that the function is meant
|
|
|
|
to be possibly unused. GCC will not produce a warning for this
|
|
|
|
function.
|
2003-08-06 23:08:29 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item used
|
|
|
|
@cindex @code{used} attribute.
|
|
|
|
This attribute, attached to a function, means that code must be emitted
|
|
|
|
for the function even if it appears that the function is not referenced.
|
|
|
|
This is useful, for example, when the function is referenced only in
|
|
|
|
inline assembly.
|
2003-04-26 14:35:19 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item visibility ("@var{visibility_type}")
|
|
|
|
@cindex @code{visibility} attribute
|
|
|
|
The @code{visibility} attribute on ELF targets causes the declaration
|
|
|
|
to be emitted with default, hidden, protected or internal visibility.
|
2003-04-26 14:35:19 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@smallexample
|
|
|
|
void __attribute__ ((visibility ("protected")))
|
|
|
|
f () @{ /* @r{Do something.} */; @}
|
|
|
|
int i __attribute__ ((visibility ("hidden")));
|
|
|
|
@end smallexample
|
2003-04-26 14:35:19 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
See the ELF gABI for complete details, but the short story is:
|
2003-04-26 14:35:19 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@table @dfn
|
2004-08-04 21:37:19 +02:00
|
|
|
@c keep this list of visibilities in alphabetical order.
|
2003-07-04 09:42:11 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item default
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
Default visibility is the normal case for ELF@. This value is
|
2004-06-23 10:41:55 +02:00
|
|
|
available for the visibility attribute to override other options
|
|
|
|
that may change the assumed visibility of symbols.
|
2003-07-04 09:42:11 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item hidden
|
|
|
|
Hidden visibility indicates that the symbol will not be placed into
|
|
|
|
the dynamic symbol table, so no other @dfn{module} (executable or
|
|
|
|
shared library) can reference it directly.
|
2003-07-04 09:42:11 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item internal
|
|
|
|
Internal visibility is like hidden visibility, but with additional
|
|
|
|
processor specific semantics. Unless otherwise specified by the psABI,
|
|
|
|
GCC defines internal visibility to mean that the function is @emph{never}
|
|
|
|
called from another module. Note that hidden symbols, while they cannot
|
|
|
|
be referenced directly by other modules, can be referenced indirectly via
|
|
|
|
function pointers. By indicating that a symbol cannot be called from
|
|
|
|
outside the module, GCC may for instance omit the load of a PIC register
|
|
|
|
since it is known that the calling function loaded the correct value.
|
2003-07-04 09:42:11 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item protected
|
|
|
|
Protected visibility indicates that the symbol will be placed in the
|
|
|
|
dynamic symbol table, but that references within the defining module
|
|
|
|
will bind to the local symbol. That is, the symbol cannot be overridden
|
|
|
|
by another module.
|
2003-07-04 09:42:11 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@end table
|
2003-07-04 09:42:11 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
Not all ELF targets support this attribute.
|
2003-07-04 09:42:11 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item warn_unused_result
|
|
|
|
@cindex @code{warn_unused_result} attribute
|
|
|
|
The @code{warn_unused_result} attribute causes a warning to be emitted
|
|
|
|
if a caller of the function with this attribute does not use its
|
|
|
|
return value. This is useful for functions where not checking
|
|
|
|
the result is either a security problem or always a bug, such as
|
|
|
|
@code{realloc}.
|
2003-07-04 09:42:11 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@smallexample
|
|
|
|
int fn () __attribute__ ((warn_unused_result));
|
|
|
|
int foo ()
|
|
|
|
@{
|
|
|
|
if (fn () < 0) return -1;
|
|
|
|
fn ();
|
|
|
|
return 0;
|
|
|
|
@}
|
|
|
|
@end smallexample
|
2003-07-04 09:42:11 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
results in warning on line 5.
|
2003-07-04 09:42:11 +02:00
|
|
|
|
2004-06-23 10:41:55 +02:00
|
|
|
@item weak
|
|
|
|
@cindex @code{weak} attribute
|
|
|
|
The @code{weak} attribute causes the declaration to be emitted as a weak
|
|
|
|
symbol rather than a global. This is primarily useful in defining
|
|
|
|
library functions which can be overridden in user code, though it can
|
|
|
|
also be used with non-function declarations. Weak symbols are supported
|
|
|
|
for ELF targets, and also for a.out targets when using the GNU assembler
|
|
|
|
and linker.
|
2003-07-04 09:42:11 +02:00
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@end table
|
|
|
|
|
|
|
|
You can specify multiple attributes in a declaration by separating them
|
|
|
|
by commas within the double parentheses or by immediately following an
|
|
|
|
attribute declaration with another attribute declaration.
|
|
|
|
|
|
|
|
@cindex @code{#pragma}, reason for not using
|
|
|
|
@cindex pragma, reason for not using
|
2000-11-30 02:24:39 +01:00
|
|
|
Some people object to the @code{__attribute__} feature, suggesting that
|
|
|
|
ISO C's @code{#pragma} should be used instead. At the time
|
|
|
|
@code{__attribute__} was designed, there were two reasons for not doing
|
|
|
|
this.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@enumerate
|
|
|
|
@item
|
|
|
|
It is impossible to generate @code{#pragma} commands from a macro.
|
|
|
|
|
|
|
|
@item
|
|
|
|
There is no telling what the same @code{#pragma} might mean in another
|
|
|
|
compiler.
|
|
|
|
@end enumerate
|
|
|
|
|
2000-11-30 02:24:39 +01:00
|
|
|
These two reasons applied to almost any application that might have been
|
|
|
|
proposed for @code{#pragma}. It was basically a mistake to use
|
|
|
|
@code{#pragma} for @emph{anything}.
|
|
|
|
|
|
|
|
The ISO C99 standard includes @code{_Pragma}, which now allows pragmas
|
|
|
|
to be generated from macros. In addition, a @code{#pragma GCC}
|
|
|
|
namespace is now in use for GCC-specific pragmas. However, it has been
|
|
|
|
found convenient to use @code{__attribute__} to achieve a natural
|
|
|
|
attachment of attributes to their corresponding declarations, whereas
|
|
|
|
@code{#pragma GCC} is of use for constructs that do not naturally form
|
|
|
|
part of the grammar. @xref{Other Directives,,Miscellaneous
|
2003-10-04 12:53:09 +02:00
|
|
|
Preprocessing Directives, cpp, The GNU C Preprocessor}.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-01-27 22:29:53 +01:00
|
|
|
@node Attribute Syntax
|
|
|
|
@section Attribute Syntax
|
|
|
|
@cindex attribute syntax
|
|
|
|
|
|
|
|
This section describes the syntax with which @code{__attribute__} may be
|
|
|
|
used, and the constructs to which attribute specifiers bind, for the C
|
c-tree.texi, [...]: Replace . at end of sentences preceded by a capital letter with @..
* doc/c-tree.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppinternals.texi, doc/extend.texi, doc/gcc.texi,
doc/gcov.texi, doc/install-old.texi, doc/install.texi,
doc/invoke.texi, doc/md.texi, doc/rtl.texi, doc/tm.texi: Replace
. at end of sentences preceded by a capital letter with @..
From-SVN: r43611
2001-06-27 17:04:16 +02:00
|
|
|
language. Some details may vary for C++ and Objective-C@. Because of
|
2001-01-27 22:29:53 +01:00
|
|
|
infelicities in the grammar for attributes, some forms described here
|
|
|
|
may not be successfully parsed in all cases.
|
|
|
|
|
Table-driven attributes.
* c-decl.c, config/alpha/alpha.c, config/arc/arc.c,
config/arm/arm.c, config/arm/pe.c, config/avr/avr.c,
config/avr/avr.h, config/d30v/d30v.h, config/fr30/fr30.h,
config/h8300/h8300.c, config/i386/cygwin.h, config/i386/winnt.c,
config/m32r/m32r.c, config/mcore/mcore.c, config/sh/sh.c,
config/stormy16/stormy16.h, config/v850/v850.c, doc/c-tree.texi,
doc/tm.texi, ggc-common.c, integrate.c, print-tree.c, tree.c,
tree.h: Rename DECL_MACHINE_ATTRIBUTES to DECL_ATTRIBUTES.
* tree.h (struct tree_decl): Change machine_attributes to
attributes.
* doc/c-tree.texi: Document that all attributes are now attached
to decls and types.
* c-common.c (add_attribute, attrtab, attrtab_idx,
default_valid_lang_attribute, valid_lang_attribute): Remove.
(attribute_tables, attributes_initialized,
c_common_attribute_table, default_lang_attribute_table): New
variables.
(handle_packed_attribute, handle_nocommon_attribute,
handle_common_attribute, handle_noreturn_attribute,
handle_unused_attribute, handle_const_attribute,
handle_transparent_union_attribute, handle_constructor_attribute,
handle_destructor_attribute, handle_mode_attribute,
handle_section_attribute, handle_aligned_attribute,
handle_weak_attribute, handle_alias_attribute,
handle_no_instrument_function_attribute,
handle_no_check_memory_usage_attribute, handle_malloc_attribute,
handle_no_limit_stack_attribute, handle_pure_attribute): New
functions.
(init_attributes, decl_attributes): Rewrite to implement
table-driven attributes.
* c-common.h (enum attribute_flags): Move to tree.h.
* c-format.c (decl_handle_format_attribute,
decl_handle_format_arg_attribute): Rename to
handle_format_attribute and handle_format_arg_attribute. Update
for table-driven attributes.
* c-common.h (decl_handle_format_attribute,
decl_handle_format_arg_attribute): Remove prototypes.
(handle_format_attribute, handle_format_arg_attribute): Add
prototypes.
* c-decl.c (grokdeclarator): Handle attributes nested inside
declarators.
* c-parse.in (setattrs, maybe_setattrs): Remove.
(maybe_type_quals_setattrs): Rename to maybe_type_quals_attrs.
Update to handle nested attributes properly.
(maybe_resetattrs, after_type_declarator,
parm_declarator_nostarttypename, notype_declarator, absdcl1_noea,
absdcl1_ea, direct_absdcl1): Update to handle nested attributes
properly.
(make_pointer_declarator): Update to handle nested attributes
properly.
* doc/extend.texi: Update documentation of limits of attributes
syntax. Warn about problems with attribute semantics in C++.
* target.h (struct target): Remove valid_decl_attribute and
valid_type_attribute. Add attribute_table and
function_attribute_inlinable_p.
* target-def.h (TARGET_VALID_DECL_ATTRIBUTE,
TARGET_VALID_TYPE_ATTRIBUTE): Remove.
(TARGET_ATTRIBUTE_TABLE, TARGET_FUNCTION_ATTRIBUTE_INLINABLE_P):
Add.
(TARGET_INITIALIZER): Update.
* integrate.c (FUNCTION_ATTRIBUTE_INLINABLE_P): Remove default
definition.
(function_attribute_inlinable_p): New function. Check for the
presence of any machine attributes before using
targetm.function_attribute_inlinable_p.
(function_cannot_inline_p): Update.
* Makefile.in (integrate.o): Update dependencies.
* doc/tm.texi: Update documentation of target attributes and
example definition of TARGET_VALID_TYPE_ATTRIBUTE.
* tree.c (default_valid_attribute_p, valid_machine_attribute):
Remove.
(default_target_attribute_table,
default_function_attribute_inlinable_p): New.
(lookup_attribute): Update comment to clarify handling of multiple
attributes with the same name.
(merge_attributes, attribute_list_contained): Allow multiple
attributes with the same name but different arguments to appear in
the same attribute list.
* tree.h (default_valid_attribute_p): Remove prototype.
(struct attribute_spec): New.
(default_target_attribute_table): Declare.
(enum attribute_flags): Move from c-common.h. Add
ATTR_FLAG_TYPE_IN_PLACE.
(default_function_attribute_inlinable_p): Declare.
* config/alpha/alpha.c (vms_valid_decl_attribute_p): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(vms_attribute_table): New.
* config/arc/arc.c (arc_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(arc_attribute_table, arc_handle_interrupt_attribute): New.
* config/arm/arm.c (arm_valid_type_attribute_p,
arm_valid_decl_attribute_p, arm_pe_valid_decl_attribute_p):
Remove.
(TARGET_VALID_TYPE_ATTRIBUTE, TARGET_VALID_DECL_ATTRIBUTE): Don't
define.
(TARGET_ATTRIBUTE_TABLE): Define.
(arm_attribute_table, arm_handle_fndecl_attribute,
arm_handle_isr_attribute): New.
* config/avr/avr.c (avr_valid_type_attribute,
avr_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE, TARGET_VALID_TYPE_ATTRIBUTE): Don't
define.
(TARGET_ATTRIBUTE_TABLE): Define.
(avr_attribute_table, avr_handle_progmem_attribute,
avr_handle_fndecl_attribute): New.
* config/c4x/c4x.c (c4x_valid_type_attribute_p): Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(c4x_attribute_table, c4x_handle_fntype_attribute): New.
* config/h8300/h8300.c (h8300_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(h8300_attribute_table, h8300_handle_fndecl_attribute,
h8300_handle_eightbit_data_attribute,
h8300_handle_tiny_data_attribute): New.
* config/i386/i386-protos.h (ix86_valid_type_attribute_p,
i386_pe_valid_decl_attribute_p, i386_pe_valid_type_attribute_p):
Remove prototypes.
(ix86_handle_dll_attribute, ix86_handle_shared_attribute): New
declarations.
* config/i386/i386.c (ix86_valid_type_attribute_p: Remove.
(TARGET_VALID_TYPE_ATTRIBUTE, TARGET_VALID_DECL_ATTRIBUTE): Don't
define.
(TARGET_ATTRIBUTE_TABLE): Define.
(ix86_attribute_table, ix86_handle_cdecl_attribute,
ix86_handle_regparm_attribute): New.
* config/i386/winnt.c (i386_pe_valid_decl_attribute_p,
i386_pe_valid_type_attribute_p): Remove.
(ix86_handle_dll_attribute, ix86_handle_shared_attribute): New.
* config/ia64/ia64.c (ia64_valid_type_attribute): Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(ia64_attribute_table): New.
* config/m32r/m32r.c (m32r_valid_decl_attribute, interrupt_ident1,
interrupt_ident2, model_ident1, model_ident2): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(init_idents): Update.
(m32r_attribute_table, m32r_handle_model_attribute): New.
* config/m68hc11/m68hc11.c (m68hc11_valid_type_attribute_p):
Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(m68hc11_attribute_table, m68hc11_handle_fntype_attribute): New.
* config/mcore/mcore.c (mcore_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(mcore_attribute_table, mcore_handle_naked_attribute): New.
* config/ns32k/ns32k.c (ns32k_valid_type_attribute_p): Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(ns32k_attribute_table, ns32k_handle_fntype_attribute): New.
* config/rs6000/rs6000.c (rs6000_valid_type_attribute_p): Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(rs6000_attribute_table, rs6000_handle_longcall_attribute): New.
* config/sh/sh.c (sh_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(sh_attribute_table, sh_handle_interrupt_handler_attribute,
sh_handle_sp_switch_attribute, sh_handle_trap_exit_attribute):
New.
* config/stormy16/stormy16.c (stormy16_valid_type_attribute):
Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define
(TARGET_ATTRIBUTE_TABLE): Define.
(stormy16_attribute_table, stormy16_handle_interrupt_attribute):
New.
* config/v850/v850.c (v850_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(v850_attribute_table, v850_handle_interrupt_attribute,
v850_handle_data_area_attribute): New.
* config/v850/v850-c.c (mark_current_function_as_interrupt):
Return void. Call decl_attributes instead of
valid_machine_attribute.
cp:
Table-driven attributes.
* decl.c: Rename DECL_MACHINE_ATTRIBUTES to DECL_ATTRIBUTES.
* decl2.c (cplus_decl_attributes): Only take one attributes
parameter.
* cp-tree.c (cplus_decl_attributes): Update prototype.
* class.c (finish_struct), decl.c (start_decl, start_function),
decl2.c (grokfield), friend.c (do_friend), parse.y
(parse_bitfield): Update calls to cplus_decl_attributes.
* decl.c (grokdeclarator): Take a pointer to a single ordinary
attribute list.
* decl.h (grokdeclarator): Update prototype.
* decl2.c (grokfield): Take a single ordinary attribute list.
* friend.c (do_friend): Likewise.
* decl.c (shadow_tag, groktypename, start_decl,
start_handler_parms, grokdeclarator, grokparms, start_function,
start_method), decl2.c (grokfield, grokbitfield, grokoptypename),
parse.y (parse_field, parse_bitfield, component_decl_1), pt.c
(process_template_parm, do_decl_instantiation): Pass single
ordinary attribute lists around.
* decl.c (grokdeclarator): Correct handling of nested attributes.
Revert the patch
1998-10-18 Jason Merrill <jason@yorick.cygnus.com>
* decl.c (grokdeclarator): Embedded attrs bind to the right,
not the left.
.
* cp-tree.h (cp_valid_lang_attribute): Remove declaration
(cp_attribute_table): Declare.
* decl.c (valid_lang_attribute): Don't define.
(lang_attribute_table): Define.
(init_decl_processing): Initialize lang_attribute_table instead of
valid_lang_attribute.
* tree.c (cp_valid_lang_attribute): Remove.
(handle_java_interface_attribute, handle_com_interface_attribute,
handle_init_priority_attribute): New functions.
(cp_attribute_table): New array.
* decl2.c (import_export_class): Don't use
targetm.valid_type_attribute.
testsuite:
Table-driven attributes.
* g++.dg/ext/attrib1.C: New test.
From-SVN: r45718
2001-09-21 03:27:06 +02:00
|
|
|
There are some problems with the semantics of attributes in C++. For
|
|
|
|
example, there are no manglings for attributes, although they may affect
|
|
|
|
code generation, so problems may arise when attributed types are used in
|
|
|
|
conjunction with templates or overloading. Similarly, @code{typeid}
|
|
|
|
does not distinguish between types with different attributes. Support
|
|
|
|
for attributes in C++ may be restricted in future to attributes on
|
|
|
|
declarations only, but not on nested declarators.
|
|
|
|
|
2001-01-27 22:29:53 +01:00
|
|
|
@xref{Function Attributes}, for details of the semantics of attributes
|
|
|
|
applying to functions. @xref{Variable Attributes}, for details of the
|
|
|
|
semantics of attributes applying to variables. @xref{Type Attributes},
|
|
|
|
for details of the semantics of attributes applying to structure, union
|
|
|
|
and enumerated types.
|
|
|
|
|
|
|
|
An @dfn{attribute specifier} is of the form
|
|
|
|
@code{__attribute__ ((@var{attribute-list}))}. An @dfn{attribute list}
|
|
|
|
is a possibly empty comma-separated sequence of @dfn{attributes}, where
|
|
|
|
each attribute is one of the following:
|
|
|
|
|
|
|
|
@itemize @bullet
|
|
|
|
@item
|
|
|
|
Empty. Empty attributes are ignored.
|
|
|
|
|
|
|
|
@item
|
|
|
|
A word (which may be an identifier such as @code{unused}, or a reserved
|
|
|
|
word such as @code{const}).
|
|
|
|
|
|
|
|
@item
|
|
|
|
A word, followed by, in parentheses, parameters for the attribute.
|
|
|
|
These parameters take one of the following forms:
|
|
|
|
|
|
|
|
@itemize @bullet
|
|
|
|
@item
|
|
|
|
An identifier. For example, @code{mode} attributes use this form.
|
|
|
|
|
|
|
|
@item
|
|
|
|
An identifier followed by a comma and a non-empty comma-separated list
|
|
|
|
of expressions. For example, @code{format} attributes use this form.
|
|
|
|
|
|
|
|
@item
|
|
|
|
A possibly empty comma-separated list of expressions. For example,
|
|
|
|
@code{format_arg} attributes use this form with the list being a single
|
|
|
|
integer constant expression, and @code{alias} attributes use this form
|
|
|
|
with the list being a single string constant.
|
|
|
|
@end itemize
|
|
|
|
@end itemize
|
|
|
|
|
|
|
|
An @dfn{attribute specifier list} is a sequence of one or more attribute
|
|
|
|
specifiers, not separated by any other tokens.
|
|
|
|
|
2003-07-25 12:52:31 +02:00
|
|
|
In GNU C, an attribute specifier list may appear after the colon following a
|
2001-01-27 22:29:53 +01:00
|
|
|
label, other than a @code{case} or @code{default} label. The only
|
|
|
|
attribute it makes sense to use after a label is @code{unused}. This
|
|
|
|
feature is intended for code generated by programs which contains labels
|
|
|
|
that may be unused but which is compiled with @option{-Wall}. It would
|
|
|
|
not normally be appropriate to use in it human-written code, though it
|
|
|
|
could be useful in cases where the code that jumps to the label is
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
contained within an @code{#ifdef} conditional. GNU C++ does not permit
|
2003-07-25 12:52:31 +02:00
|
|
|
such placement of attribute lists, as it is permissible for a
|
|
|
|
declaration, which could begin with an attribute list, to be labelled in
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
C++. Declarations cannot be labelled in C90 or C99, so the ambiguity
|
2003-07-25 12:52:31 +02:00
|
|
|
does not arise there.
|
2001-01-27 22:29:53 +01:00
|
|
|
|
|
|
|
An attribute specifier list may appear as part of a @code{struct},
|
|
|
|
@code{union} or @code{enum} specifier. It may go either immediately
|
|
|
|
after the @code{struct}, @code{union} or @code{enum} keyword, or after
|
|
|
|
the closing brace. It is ignored if the content of the structure, union
|
|
|
|
or enumerated type is not defined in the specifier in which the
|
|
|
|
attribute specifier list is used---that is, in usages such as
|
|
|
|
@code{struct __attribute__((foo)) bar} with no following opening brace.
|
|
|
|
Where attribute specifiers follow the closing brace, they are considered
|
|
|
|
to relate to the structure, union or enumerated type defined, not to any
|
|
|
|
enclosing declaration the type specifier appears in, and the type
|
|
|
|
defined is not complete until after the attribute specifiers.
|
|
|
|
@c Otherwise, there would be the following problems: a shift/reduce
|
2001-10-09 08:03:16 +02:00
|
|
|
@c conflict between attributes binding the struct/union/enum and
|
2001-01-27 22:29:53 +01:00
|
|
|
@c binding to the list of specifiers/qualifiers; and "aligned"
|
|
|
|
@c attributes could use sizeof for the structure, but the size could be
|
|
|
|
@c changed later by "packed" attributes.
|
|
|
|
|
|
|
|
Otherwise, an attribute specifier appears as part of a declaration,
|
|
|
|
counting declarations of unnamed parameters and type names, and relates
|
|
|
|
to that declaration (which may be nested in another declaration, for
|
Table-driven attributes.
* c-decl.c, config/alpha/alpha.c, config/arc/arc.c,
config/arm/arm.c, config/arm/pe.c, config/avr/avr.c,
config/avr/avr.h, config/d30v/d30v.h, config/fr30/fr30.h,
config/h8300/h8300.c, config/i386/cygwin.h, config/i386/winnt.c,
config/m32r/m32r.c, config/mcore/mcore.c, config/sh/sh.c,
config/stormy16/stormy16.h, config/v850/v850.c, doc/c-tree.texi,
doc/tm.texi, ggc-common.c, integrate.c, print-tree.c, tree.c,
tree.h: Rename DECL_MACHINE_ATTRIBUTES to DECL_ATTRIBUTES.
* tree.h (struct tree_decl): Change machine_attributes to
attributes.
* doc/c-tree.texi: Document that all attributes are now attached
to decls and types.
* c-common.c (add_attribute, attrtab, attrtab_idx,
default_valid_lang_attribute, valid_lang_attribute): Remove.
(attribute_tables, attributes_initialized,
c_common_attribute_table, default_lang_attribute_table): New
variables.
(handle_packed_attribute, handle_nocommon_attribute,
handle_common_attribute, handle_noreturn_attribute,
handle_unused_attribute, handle_const_attribute,
handle_transparent_union_attribute, handle_constructor_attribute,
handle_destructor_attribute, handle_mode_attribute,
handle_section_attribute, handle_aligned_attribute,
handle_weak_attribute, handle_alias_attribute,
handle_no_instrument_function_attribute,
handle_no_check_memory_usage_attribute, handle_malloc_attribute,
handle_no_limit_stack_attribute, handle_pure_attribute): New
functions.
(init_attributes, decl_attributes): Rewrite to implement
table-driven attributes.
* c-common.h (enum attribute_flags): Move to tree.h.
* c-format.c (decl_handle_format_attribute,
decl_handle_format_arg_attribute): Rename to
handle_format_attribute and handle_format_arg_attribute. Update
for table-driven attributes.
* c-common.h (decl_handle_format_attribute,
decl_handle_format_arg_attribute): Remove prototypes.
(handle_format_attribute, handle_format_arg_attribute): Add
prototypes.
* c-decl.c (grokdeclarator): Handle attributes nested inside
declarators.
* c-parse.in (setattrs, maybe_setattrs): Remove.
(maybe_type_quals_setattrs): Rename to maybe_type_quals_attrs.
Update to handle nested attributes properly.
(maybe_resetattrs, after_type_declarator,
parm_declarator_nostarttypename, notype_declarator, absdcl1_noea,
absdcl1_ea, direct_absdcl1): Update to handle nested attributes
properly.
(make_pointer_declarator): Update to handle nested attributes
properly.
* doc/extend.texi: Update documentation of limits of attributes
syntax. Warn about problems with attribute semantics in C++.
* target.h (struct target): Remove valid_decl_attribute and
valid_type_attribute. Add attribute_table and
function_attribute_inlinable_p.
* target-def.h (TARGET_VALID_DECL_ATTRIBUTE,
TARGET_VALID_TYPE_ATTRIBUTE): Remove.
(TARGET_ATTRIBUTE_TABLE, TARGET_FUNCTION_ATTRIBUTE_INLINABLE_P):
Add.
(TARGET_INITIALIZER): Update.
* integrate.c (FUNCTION_ATTRIBUTE_INLINABLE_P): Remove default
definition.
(function_attribute_inlinable_p): New function. Check for the
presence of any machine attributes before using
targetm.function_attribute_inlinable_p.
(function_cannot_inline_p): Update.
* Makefile.in (integrate.o): Update dependencies.
* doc/tm.texi: Update documentation of target attributes and
example definition of TARGET_VALID_TYPE_ATTRIBUTE.
* tree.c (default_valid_attribute_p, valid_machine_attribute):
Remove.
(default_target_attribute_table,
default_function_attribute_inlinable_p): New.
(lookup_attribute): Update comment to clarify handling of multiple
attributes with the same name.
(merge_attributes, attribute_list_contained): Allow multiple
attributes with the same name but different arguments to appear in
the same attribute list.
* tree.h (default_valid_attribute_p): Remove prototype.
(struct attribute_spec): New.
(default_target_attribute_table): Declare.
(enum attribute_flags): Move from c-common.h. Add
ATTR_FLAG_TYPE_IN_PLACE.
(default_function_attribute_inlinable_p): Declare.
* config/alpha/alpha.c (vms_valid_decl_attribute_p): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(vms_attribute_table): New.
* config/arc/arc.c (arc_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(arc_attribute_table, arc_handle_interrupt_attribute): New.
* config/arm/arm.c (arm_valid_type_attribute_p,
arm_valid_decl_attribute_p, arm_pe_valid_decl_attribute_p):
Remove.
(TARGET_VALID_TYPE_ATTRIBUTE, TARGET_VALID_DECL_ATTRIBUTE): Don't
define.
(TARGET_ATTRIBUTE_TABLE): Define.
(arm_attribute_table, arm_handle_fndecl_attribute,
arm_handle_isr_attribute): New.
* config/avr/avr.c (avr_valid_type_attribute,
avr_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE, TARGET_VALID_TYPE_ATTRIBUTE): Don't
define.
(TARGET_ATTRIBUTE_TABLE): Define.
(avr_attribute_table, avr_handle_progmem_attribute,
avr_handle_fndecl_attribute): New.
* config/c4x/c4x.c (c4x_valid_type_attribute_p): Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(c4x_attribute_table, c4x_handle_fntype_attribute): New.
* config/h8300/h8300.c (h8300_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(h8300_attribute_table, h8300_handle_fndecl_attribute,
h8300_handle_eightbit_data_attribute,
h8300_handle_tiny_data_attribute): New.
* config/i386/i386-protos.h (ix86_valid_type_attribute_p,
i386_pe_valid_decl_attribute_p, i386_pe_valid_type_attribute_p):
Remove prototypes.
(ix86_handle_dll_attribute, ix86_handle_shared_attribute): New
declarations.
* config/i386/i386.c (ix86_valid_type_attribute_p: Remove.
(TARGET_VALID_TYPE_ATTRIBUTE, TARGET_VALID_DECL_ATTRIBUTE): Don't
define.
(TARGET_ATTRIBUTE_TABLE): Define.
(ix86_attribute_table, ix86_handle_cdecl_attribute,
ix86_handle_regparm_attribute): New.
* config/i386/winnt.c (i386_pe_valid_decl_attribute_p,
i386_pe_valid_type_attribute_p): Remove.
(ix86_handle_dll_attribute, ix86_handle_shared_attribute): New.
* config/ia64/ia64.c (ia64_valid_type_attribute): Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(ia64_attribute_table): New.
* config/m32r/m32r.c (m32r_valid_decl_attribute, interrupt_ident1,
interrupt_ident2, model_ident1, model_ident2): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(init_idents): Update.
(m32r_attribute_table, m32r_handle_model_attribute): New.
* config/m68hc11/m68hc11.c (m68hc11_valid_type_attribute_p):
Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(m68hc11_attribute_table, m68hc11_handle_fntype_attribute): New.
* config/mcore/mcore.c (mcore_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(mcore_attribute_table, mcore_handle_naked_attribute): New.
* config/ns32k/ns32k.c (ns32k_valid_type_attribute_p): Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(ns32k_attribute_table, ns32k_handle_fntype_attribute): New.
* config/rs6000/rs6000.c (rs6000_valid_type_attribute_p): Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(rs6000_attribute_table, rs6000_handle_longcall_attribute): New.
* config/sh/sh.c (sh_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(sh_attribute_table, sh_handle_interrupt_handler_attribute,
sh_handle_sp_switch_attribute, sh_handle_trap_exit_attribute):
New.
* config/stormy16/stormy16.c (stormy16_valid_type_attribute):
Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define
(TARGET_ATTRIBUTE_TABLE): Define.
(stormy16_attribute_table, stormy16_handle_interrupt_attribute):
New.
* config/v850/v850.c (v850_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(v850_attribute_table, v850_handle_interrupt_attribute,
v850_handle_data_area_attribute): New.
* config/v850/v850-c.c (mark_current_function_as_interrupt):
Return void. Call decl_attributes instead of
valid_machine_attribute.
cp:
Table-driven attributes.
* decl.c: Rename DECL_MACHINE_ATTRIBUTES to DECL_ATTRIBUTES.
* decl2.c (cplus_decl_attributes): Only take one attributes
parameter.
* cp-tree.c (cplus_decl_attributes): Update prototype.
* class.c (finish_struct), decl.c (start_decl, start_function),
decl2.c (grokfield), friend.c (do_friend), parse.y
(parse_bitfield): Update calls to cplus_decl_attributes.
* decl.c (grokdeclarator): Take a pointer to a single ordinary
attribute list.
* decl.h (grokdeclarator): Update prototype.
* decl2.c (grokfield): Take a single ordinary attribute list.
* friend.c (do_friend): Likewise.
* decl.c (shadow_tag, groktypename, start_decl,
start_handler_parms, grokdeclarator, grokparms, start_function,
start_method), decl2.c (grokfield, grokbitfield, grokoptypename),
parse.y (parse_field, parse_bitfield, component_decl_1), pt.c
(process_template_parm, do_decl_instantiation): Pass single
ordinary attribute lists around.
* decl.c (grokdeclarator): Correct handling of nested attributes.
Revert the patch
1998-10-18 Jason Merrill <jason@yorick.cygnus.com>
* decl.c (grokdeclarator): Embedded attrs bind to the right,
not the left.
.
* cp-tree.h (cp_valid_lang_attribute): Remove declaration
(cp_attribute_table): Declare.
* decl.c (valid_lang_attribute): Don't define.
(lang_attribute_table): Define.
(init_decl_processing): Initialize lang_attribute_table instead of
valid_lang_attribute.
* tree.c (cp_valid_lang_attribute): Remove.
(handle_java_interface_attribute, handle_com_interface_attribute,
handle_init_priority_attribute): New functions.
(cp_attribute_table): New array.
* decl2.c (import_export_class): Don't use
targetm.valid_type_attribute.
testsuite:
Table-driven attributes.
* g++.dg/ext/attrib1.C: New test.
From-SVN: r45718
2001-09-21 03:27:06 +02:00
|
|
|
example in the case of a parameter declaration), or to a particular declarator
|
|
|
|
within a declaration. Where an
|
2001-05-23 20:44:13 +02:00
|
|
|
attribute specifier is applied to a parameter declared as a function or
|
|
|
|
an array, it should apply to the function or array rather than the
|
|
|
|
pointer to which the parameter is implicitly converted, but this is not
|
|
|
|
yet correctly implemented.
|
2001-01-27 22:29:53 +01:00
|
|
|
|
|
|
|
Any list of specifiers and qualifiers at the start of a declaration may
|
|
|
|
contain attribute specifiers, whether or not such a list may in that
|
|
|
|
context contain storage class specifiers. (Some attributes, however,
|
|
|
|
are essentially in the nature of storage class specifiers, and only make
|
|
|
|
sense where storage class specifiers may be used; for example,
|
|
|
|
@code{section}.) There is one necessary limitation to this syntax: the
|
|
|
|
first old-style parameter declaration in a function definition cannot
|
|
|
|
begin with an attribute specifier, because such an attribute applies to
|
|
|
|
the function instead by syntax described below (which, however, is not
|
|
|
|
yet implemented in this case). In some other cases, attribute
|
|
|
|
specifiers are permitted by this grammar but not yet supported by the
|
|
|
|
compiler. All attribute specifiers in this place relate to the
|
c-tree.texi, [...]: Fix spelling and typos.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/install.texi, doc/invoke.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi: Fix spelling and typos.
Consistently use "built-in" and "bit-field". Minor logical markup
improvements.
* doc/gcc.1: Regenerate.
From-SVN: r43383
2001-06-15 00:51:18 +02:00
|
|
|
declaration as a whole. In the obsolescent usage where a type of
|
2001-01-27 22:29:53 +01:00
|
|
|
@code{int} is implied by the absence of type specifiers, such a list of
|
|
|
|
specifiers and qualifiers may be an attribute specifier list with no
|
|
|
|
other specifiers or qualifiers.
|
|
|
|
|
2004-10-18 02:22:27 +02:00
|
|
|
At present, the first parameter in a function prototype must have some
|
|
|
|
type specifier which is not an attribute specifier; this resolves an
|
|
|
|
ambiguity in the interpretation of @code{void f(int
|
|
|
|
(__attribute__((foo)) x))}, but is subject to change. At present, if
|
|
|
|
the parentheses of a function declarator contain only attributes then
|
|
|
|
those attributes are ignored, rather than yielding an error or warning
|
|
|
|
or implying a single parameter of type int, but this is subject to
|
|
|
|
change.
|
|
|
|
|
2001-01-27 22:29:53 +01:00
|
|
|
An attribute specifier list may appear immediately before a declarator
|
|
|
|
(other than the first) in a comma-separated list of declarators in a
|
|
|
|
declaration of more than one identifier using a single list of
|
c-parse.in (all_prefix_attributes): New variable.
* c-parse.in (all_prefix_attributes): New variable.
(PUSH_DECLSPEC_STACK, POP_DECLSPEC_STACK): New macros.
(maybe_resetattrs): New production.
(c_parse_init, datadef, fndef, datadecl, setspecs, setattrs, decl,
maybe_type_quals_setattrs, initdecls, notype_initdecls, initdcl,
notype_initdcl, nested_function, notype_nested_function,
component_decl, components, components_notype,
component_declarator, component_notype_declarator,
absdcl_maybe_attribute, parm, firstparm, setspecs_fp, ivar_decl,
ivars, mydecl, myparm): Update. Avoid prefix attributes just
after a comma being applied to more than one declarator.
* doc/extend.texi (Attribute Syntax): Update. Remove
documentation of bugs that are no longer present.
testsuite:
* gcc.c-torture/compile/20010714-1.c, gcc.dg/format/attr-4.c: New
tests.
From-SVN: r44070
2001-07-17 13:58:54 +02:00
|
|
|
specifiers and qualifiers. Such attribute specifiers apply
|
2001-08-18 23:02:44 +02:00
|
|
|
only to the identifier before whose declarator they appear. For
|
|
|
|
example, in
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
__attribute__((noreturn)) void d0 (void),
|
|
|
|
__attribute__((format(printf, 1, 2))) d1 (const char *, ...),
|
|
|
|
d2 (void)
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@noindent
|
|
|
|
the @code{noreturn} attribute applies to all the functions
|
c-parse.in (all_prefix_attributes): New variable.
* c-parse.in (all_prefix_attributes): New variable.
(PUSH_DECLSPEC_STACK, POP_DECLSPEC_STACK): New macros.
(maybe_resetattrs): New production.
(c_parse_init, datadef, fndef, datadecl, setspecs, setattrs, decl,
maybe_type_quals_setattrs, initdecls, notype_initdecls, initdcl,
notype_initdcl, nested_function, notype_nested_function,
component_decl, components, components_notype,
component_declarator, component_notype_declarator,
absdcl_maybe_attribute, parm, firstparm, setspecs_fp, ivar_decl,
ivars, mydecl, myparm): Update. Avoid prefix attributes just
after a comma being applied to more than one declarator.
* doc/extend.texi (Attribute Syntax): Update. Remove
documentation of bugs that are no longer present.
testsuite:
* gcc.c-torture/compile/20010714-1.c, gcc.dg/format/attr-4.c: New
tests.
From-SVN: r44070
2001-07-17 13:58:54 +02:00
|
|
|
declared; the @code{format} attribute only applies to @code{d1}.
|
2001-01-27 22:29:53 +01:00
|
|
|
|
|
|
|
An attribute specifier list may appear immediately before the comma,
|
|
|
|
@code{=} or semicolon terminating the declaration of an identifier other
|
|
|
|
than a function definition. At present, such attribute specifiers apply
|
|
|
|
to the declared object or function, but in future they may attach to the
|
|
|
|
outermost adjacent declarator. In simple cases there is no difference,
|
2002-02-23 13:59:09 +01:00
|
|
|
but, for example, in
|
2001-08-18 23:02:44 +02:00
|
|
|
|
|
|
|
@smallexample
|
|
|
|
void (****f)(void) __attribute__((noreturn));
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@noindent
|
|
|
|
at present the @code{noreturn} attribute applies to @code{f}, which
|
|
|
|
causes a warning since @code{f} is not a function, but in future it may
|
|
|
|
apply to the function @code{****f}. The precise semantics of what
|
|
|
|
attributes in such cases will apply to are not yet specified. Where an
|
|
|
|
assembler name for an object or function is specified (@pxref{Asm
|
|
|
|
Labels}), at present the attribute must follow the @code{asm}
|
|
|
|
specification; in future, attributes before the @code{asm} specification
|
|
|
|
may apply to the adjacent declarator, and those after it to the declared
|
|
|
|
object or function.
|
2001-01-27 22:29:53 +01:00
|
|
|
|
|
|
|
An attribute specifier list may, in future, be permitted to appear after
|
|
|
|
the declarator in a function definition (before any old-style parameter
|
|
|
|
declarations or the function body).
|
|
|
|
|
2001-05-25 13:12:47 +02:00
|
|
|
Attribute specifiers may be mixed with type qualifiers appearing inside
|
|
|
|
the @code{[]} of a parameter array declarator, in the C99 construct by
|
|
|
|
which such qualifiers are applied to the pointer to which the array is
|
|
|
|
implicitly converted. Such attribute specifiers apply to the pointer,
|
|
|
|
not to the array, but at present this is not implemented and they are
|
|
|
|
ignored.
|
|
|
|
|
2001-01-27 22:29:53 +01:00
|
|
|
An attribute specifier list may appear at the start of a nested
|
|
|
|
declarator. At present, there are some limitations in this usage: the
|
Table-driven attributes.
* c-decl.c, config/alpha/alpha.c, config/arc/arc.c,
config/arm/arm.c, config/arm/pe.c, config/avr/avr.c,
config/avr/avr.h, config/d30v/d30v.h, config/fr30/fr30.h,
config/h8300/h8300.c, config/i386/cygwin.h, config/i386/winnt.c,
config/m32r/m32r.c, config/mcore/mcore.c, config/sh/sh.c,
config/stormy16/stormy16.h, config/v850/v850.c, doc/c-tree.texi,
doc/tm.texi, ggc-common.c, integrate.c, print-tree.c, tree.c,
tree.h: Rename DECL_MACHINE_ATTRIBUTES to DECL_ATTRIBUTES.
* tree.h (struct tree_decl): Change machine_attributes to
attributes.
* doc/c-tree.texi: Document that all attributes are now attached
to decls and types.
* c-common.c (add_attribute, attrtab, attrtab_idx,
default_valid_lang_attribute, valid_lang_attribute): Remove.
(attribute_tables, attributes_initialized,
c_common_attribute_table, default_lang_attribute_table): New
variables.
(handle_packed_attribute, handle_nocommon_attribute,
handle_common_attribute, handle_noreturn_attribute,
handle_unused_attribute, handle_const_attribute,
handle_transparent_union_attribute, handle_constructor_attribute,
handle_destructor_attribute, handle_mode_attribute,
handle_section_attribute, handle_aligned_attribute,
handle_weak_attribute, handle_alias_attribute,
handle_no_instrument_function_attribute,
handle_no_check_memory_usage_attribute, handle_malloc_attribute,
handle_no_limit_stack_attribute, handle_pure_attribute): New
functions.
(init_attributes, decl_attributes): Rewrite to implement
table-driven attributes.
* c-common.h (enum attribute_flags): Move to tree.h.
* c-format.c (decl_handle_format_attribute,
decl_handle_format_arg_attribute): Rename to
handle_format_attribute and handle_format_arg_attribute. Update
for table-driven attributes.
* c-common.h (decl_handle_format_attribute,
decl_handle_format_arg_attribute): Remove prototypes.
(handle_format_attribute, handle_format_arg_attribute): Add
prototypes.
* c-decl.c (grokdeclarator): Handle attributes nested inside
declarators.
* c-parse.in (setattrs, maybe_setattrs): Remove.
(maybe_type_quals_setattrs): Rename to maybe_type_quals_attrs.
Update to handle nested attributes properly.
(maybe_resetattrs, after_type_declarator,
parm_declarator_nostarttypename, notype_declarator, absdcl1_noea,
absdcl1_ea, direct_absdcl1): Update to handle nested attributes
properly.
(make_pointer_declarator): Update to handle nested attributes
properly.
* doc/extend.texi: Update documentation of limits of attributes
syntax. Warn about problems with attribute semantics in C++.
* target.h (struct target): Remove valid_decl_attribute and
valid_type_attribute. Add attribute_table and
function_attribute_inlinable_p.
* target-def.h (TARGET_VALID_DECL_ATTRIBUTE,
TARGET_VALID_TYPE_ATTRIBUTE): Remove.
(TARGET_ATTRIBUTE_TABLE, TARGET_FUNCTION_ATTRIBUTE_INLINABLE_P):
Add.
(TARGET_INITIALIZER): Update.
* integrate.c (FUNCTION_ATTRIBUTE_INLINABLE_P): Remove default
definition.
(function_attribute_inlinable_p): New function. Check for the
presence of any machine attributes before using
targetm.function_attribute_inlinable_p.
(function_cannot_inline_p): Update.
* Makefile.in (integrate.o): Update dependencies.
* doc/tm.texi: Update documentation of target attributes and
example definition of TARGET_VALID_TYPE_ATTRIBUTE.
* tree.c (default_valid_attribute_p, valid_machine_attribute):
Remove.
(default_target_attribute_table,
default_function_attribute_inlinable_p): New.
(lookup_attribute): Update comment to clarify handling of multiple
attributes with the same name.
(merge_attributes, attribute_list_contained): Allow multiple
attributes with the same name but different arguments to appear in
the same attribute list.
* tree.h (default_valid_attribute_p): Remove prototype.
(struct attribute_spec): New.
(default_target_attribute_table): Declare.
(enum attribute_flags): Move from c-common.h. Add
ATTR_FLAG_TYPE_IN_PLACE.
(default_function_attribute_inlinable_p): Declare.
* config/alpha/alpha.c (vms_valid_decl_attribute_p): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(vms_attribute_table): New.
* config/arc/arc.c (arc_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(arc_attribute_table, arc_handle_interrupt_attribute): New.
* config/arm/arm.c (arm_valid_type_attribute_p,
arm_valid_decl_attribute_p, arm_pe_valid_decl_attribute_p):
Remove.
(TARGET_VALID_TYPE_ATTRIBUTE, TARGET_VALID_DECL_ATTRIBUTE): Don't
define.
(TARGET_ATTRIBUTE_TABLE): Define.
(arm_attribute_table, arm_handle_fndecl_attribute,
arm_handle_isr_attribute): New.
* config/avr/avr.c (avr_valid_type_attribute,
avr_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE, TARGET_VALID_TYPE_ATTRIBUTE): Don't
define.
(TARGET_ATTRIBUTE_TABLE): Define.
(avr_attribute_table, avr_handle_progmem_attribute,
avr_handle_fndecl_attribute): New.
* config/c4x/c4x.c (c4x_valid_type_attribute_p): Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(c4x_attribute_table, c4x_handle_fntype_attribute): New.
* config/h8300/h8300.c (h8300_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(h8300_attribute_table, h8300_handle_fndecl_attribute,
h8300_handle_eightbit_data_attribute,
h8300_handle_tiny_data_attribute): New.
* config/i386/i386-protos.h (ix86_valid_type_attribute_p,
i386_pe_valid_decl_attribute_p, i386_pe_valid_type_attribute_p):
Remove prototypes.
(ix86_handle_dll_attribute, ix86_handle_shared_attribute): New
declarations.
* config/i386/i386.c (ix86_valid_type_attribute_p: Remove.
(TARGET_VALID_TYPE_ATTRIBUTE, TARGET_VALID_DECL_ATTRIBUTE): Don't
define.
(TARGET_ATTRIBUTE_TABLE): Define.
(ix86_attribute_table, ix86_handle_cdecl_attribute,
ix86_handle_regparm_attribute): New.
* config/i386/winnt.c (i386_pe_valid_decl_attribute_p,
i386_pe_valid_type_attribute_p): Remove.
(ix86_handle_dll_attribute, ix86_handle_shared_attribute): New.
* config/ia64/ia64.c (ia64_valid_type_attribute): Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(ia64_attribute_table): New.
* config/m32r/m32r.c (m32r_valid_decl_attribute, interrupt_ident1,
interrupt_ident2, model_ident1, model_ident2): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(init_idents): Update.
(m32r_attribute_table, m32r_handle_model_attribute): New.
* config/m68hc11/m68hc11.c (m68hc11_valid_type_attribute_p):
Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(m68hc11_attribute_table, m68hc11_handle_fntype_attribute): New.
* config/mcore/mcore.c (mcore_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(mcore_attribute_table, mcore_handle_naked_attribute): New.
* config/ns32k/ns32k.c (ns32k_valid_type_attribute_p): Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(ns32k_attribute_table, ns32k_handle_fntype_attribute): New.
* config/rs6000/rs6000.c (rs6000_valid_type_attribute_p): Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(rs6000_attribute_table, rs6000_handle_longcall_attribute): New.
* config/sh/sh.c (sh_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(sh_attribute_table, sh_handle_interrupt_handler_attribute,
sh_handle_sp_switch_attribute, sh_handle_trap_exit_attribute):
New.
* config/stormy16/stormy16.c (stormy16_valid_type_attribute):
Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define
(TARGET_ATTRIBUTE_TABLE): Define.
(stormy16_attribute_table, stormy16_handle_interrupt_attribute):
New.
* config/v850/v850.c (v850_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(v850_attribute_table, v850_handle_interrupt_attribute,
v850_handle_data_area_attribute): New.
* config/v850/v850-c.c (mark_current_function_as_interrupt):
Return void. Call decl_attributes instead of
valid_machine_attribute.
cp:
Table-driven attributes.
* decl.c: Rename DECL_MACHINE_ATTRIBUTES to DECL_ATTRIBUTES.
* decl2.c (cplus_decl_attributes): Only take one attributes
parameter.
* cp-tree.c (cplus_decl_attributes): Update prototype.
* class.c (finish_struct), decl.c (start_decl, start_function),
decl2.c (grokfield), friend.c (do_friend), parse.y
(parse_bitfield): Update calls to cplus_decl_attributes.
* decl.c (grokdeclarator): Take a pointer to a single ordinary
attribute list.
* decl.h (grokdeclarator): Update prototype.
* decl2.c (grokfield): Take a single ordinary attribute list.
* friend.c (do_friend): Likewise.
* decl.c (shadow_tag, groktypename, start_decl,
start_handler_parms, grokdeclarator, grokparms, start_function,
start_method), decl2.c (grokfield, grokbitfield, grokoptypename),
parse.y (parse_field, parse_bitfield, component_decl_1), pt.c
(process_template_parm, do_decl_instantiation): Pass single
ordinary attribute lists around.
* decl.c (grokdeclarator): Correct handling of nested attributes.
Revert the patch
1998-10-18 Jason Merrill <jason@yorick.cygnus.com>
* decl.c (grokdeclarator): Embedded attrs bind to the right,
not the left.
.
* cp-tree.h (cp_valid_lang_attribute): Remove declaration
(cp_attribute_table): Declare.
* decl.c (valid_lang_attribute): Don't define.
(lang_attribute_table): Define.
(init_decl_processing): Initialize lang_attribute_table instead of
valid_lang_attribute.
* tree.c (cp_valid_lang_attribute): Remove.
(handle_java_interface_attribute, handle_com_interface_attribute,
handle_init_priority_attribute): New functions.
(cp_attribute_table): New array.
* decl2.c (import_export_class): Don't use
targetm.valid_type_attribute.
testsuite:
Table-driven attributes.
* g++.dg/ext/attrib1.C: New test.
From-SVN: r45718
2001-09-21 03:27:06 +02:00
|
|
|
attributes correctly apply to the declarator, but for most individual
|
|
|
|
attributes the semantics this implies are not implemented.
|
|
|
|
When attribute specifiers follow the @code{*} of a pointer
|
c-parse.in (all_prefix_attributes): New variable.
* c-parse.in (all_prefix_attributes): New variable.
(PUSH_DECLSPEC_STACK, POP_DECLSPEC_STACK): New macros.
(maybe_resetattrs): New production.
(c_parse_init, datadef, fndef, datadecl, setspecs, setattrs, decl,
maybe_type_quals_setattrs, initdecls, notype_initdecls, initdcl,
notype_initdcl, nested_function, notype_nested_function,
component_decl, components, components_notype,
component_declarator, component_notype_declarator,
absdcl_maybe_attribute, parm, firstparm, setspecs_fp, ivar_decl,
ivars, mydecl, myparm): Update. Avoid prefix attributes just
after a comma being applied to more than one declarator.
* doc/extend.texi (Attribute Syntax): Update. Remove
documentation of bugs that are no longer present.
testsuite:
* gcc.c-torture/compile/20010714-1.c, gcc.dg/format/attr-4.c: New
tests.
From-SVN: r44070
2001-07-17 13:58:54 +02:00
|
|
|
declarator, they may be mixed with any type qualifiers present.
|
Table-driven attributes.
* c-decl.c, config/alpha/alpha.c, config/arc/arc.c,
config/arm/arm.c, config/arm/pe.c, config/avr/avr.c,
config/avr/avr.h, config/d30v/d30v.h, config/fr30/fr30.h,
config/h8300/h8300.c, config/i386/cygwin.h, config/i386/winnt.c,
config/m32r/m32r.c, config/mcore/mcore.c, config/sh/sh.c,
config/stormy16/stormy16.h, config/v850/v850.c, doc/c-tree.texi,
doc/tm.texi, ggc-common.c, integrate.c, print-tree.c, tree.c,
tree.h: Rename DECL_MACHINE_ATTRIBUTES to DECL_ATTRIBUTES.
* tree.h (struct tree_decl): Change machine_attributes to
attributes.
* doc/c-tree.texi: Document that all attributes are now attached
to decls and types.
* c-common.c (add_attribute, attrtab, attrtab_idx,
default_valid_lang_attribute, valid_lang_attribute): Remove.
(attribute_tables, attributes_initialized,
c_common_attribute_table, default_lang_attribute_table): New
variables.
(handle_packed_attribute, handle_nocommon_attribute,
handle_common_attribute, handle_noreturn_attribute,
handle_unused_attribute, handle_const_attribute,
handle_transparent_union_attribute, handle_constructor_attribute,
handle_destructor_attribute, handle_mode_attribute,
handle_section_attribute, handle_aligned_attribute,
handle_weak_attribute, handle_alias_attribute,
handle_no_instrument_function_attribute,
handle_no_check_memory_usage_attribute, handle_malloc_attribute,
handle_no_limit_stack_attribute, handle_pure_attribute): New
functions.
(init_attributes, decl_attributes): Rewrite to implement
table-driven attributes.
* c-common.h (enum attribute_flags): Move to tree.h.
* c-format.c (decl_handle_format_attribute,
decl_handle_format_arg_attribute): Rename to
handle_format_attribute and handle_format_arg_attribute. Update
for table-driven attributes.
* c-common.h (decl_handle_format_attribute,
decl_handle_format_arg_attribute): Remove prototypes.
(handle_format_attribute, handle_format_arg_attribute): Add
prototypes.
* c-decl.c (grokdeclarator): Handle attributes nested inside
declarators.
* c-parse.in (setattrs, maybe_setattrs): Remove.
(maybe_type_quals_setattrs): Rename to maybe_type_quals_attrs.
Update to handle nested attributes properly.
(maybe_resetattrs, after_type_declarator,
parm_declarator_nostarttypename, notype_declarator, absdcl1_noea,
absdcl1_ea, direct_absdcl1): Update to handle nested attributes
properly.
(make_pointer_declarator): Update to handle nested attributes
properly.
* doc/extend.texi: Update documentation of limits of attributes
syntax. Warn about problems with attribute semantics in C++.
* target.h (struct target): Remove valid_decl_attribute and
valid_type_attribute. Add attribute_table and
function_attribute_inlinable_p.
* target-def.h (TARGET_VALID_DECL_ATTRIBUTE,
TARGET_VALID_TYPE_ATTRIBUTE): Remove.
(TARGET_ATTRIBUTE_TABLE, TARGET_FUNCTION_ATTRIBUTE_INLINABLE_P):
Add.
(TARGET_INITIALIZER): Update.
* integrate.c (FUNCTION_ATTRIBUTE_INLINABLE_P): Remove default
definition.
(function_attribute_inlinable_p): New function. Check for the
presence of any machine attributes before using
targetm.function_attribute_inlinable_p.
(function_cannot_inline_p): Update.
* Makefile.in (integrate.o): Update dependencies.
* doc/tm.texi: Update documentation of target attributes and
example definition of TARGET_VALID_TYPE_ATTRIBUTE.
* tree.c (default_valid_attribute_p, valid_machine_attribute):
Remove.
(default_target_attribute_table,
default_function_attribute_inlinable_p): New.
(lookup_attribute): Update comment to clarify handling of multiple
attributes with the same name.
(merge_attributes, attribute_list_contained): Allow multiple
attributes with the same name but different arguments to appear in
the same attribute list.
* tree.h (default_valid_attribute_p): Remove prototype.
(struct attribute_spec): New.
(default_target_attribute_table): Declare.
(enum attribute_flags): Move from c-common.h. Add
ATTR_FLAG_TYPE_IN_PLACE.
(default_function_attribute_inlinable_p): Declare.
* config/alpha/alpha.c (vms_valid_decl_attribute_p): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(vms_attribute_table): New.
* config/arc/arc.c (arc_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(arc_attribute_table, arc_handle_interrupt_attribute): New.
* config/arm/arm.c (arm_valid_type_attribute_p,
arm_valid_decl_attribute_p, arm_pe_valid_decl_attribute_p):
Remove.
(TARGET_VALID_TYPE_ATTRIBUTE, TARGET_VALID_DECL_ATTRIBUTE): Don't
define.
(TARGET_ATTRIBUTE_TABLE): Define.
(arm_attribute_table, arm_handle_fndecl_attribute,
arm_handle_isr_attribute): New.
* config/avr/avr.c (avr_valid_type_attribute,
avr_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE, TARGET_VALID_TYPE_ATTRIBUTE): Don't
define.
(TARGET_ATTRIBUTE_TABLE): Define.
(avr_attribute_table, avr_handle_progmem_attribute,
avr_handle_fndecl_attribute): New.
* config/c4x/c4x.c (c4x_valid_type_attribute_p): Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(c4x_attribute_table, c4x_handle_fntype_attribute): New.
* config/h8300/h8300.c (h8300_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(h8300_attribute_table, h8300_handle_fndecl_attribute,
h8300_handle_eightbit_data_attribute,
h8300_handle_tiny_data_attribute): New.
* config/i386/i386-protos.h (ix86_valid_type_attribute_p,
i386_pe_valid_decl_attribute_p, i386_pe_valid_type_attribute_p):
Remove prototypes.
(ix86_handle_dll_attribute, ix86_handle_shared_attribute): New
declarations.
* config/i386/i386.c (ix86_valid_type_attribute_p: Remove.
(TARGET_VALID_TYPE_ATTRIBUTE, TARGET_VALID_DECL_ATTRIBUTE): Don't
define.
(TARGET_ATTRIBUTE_TABLE): Define.
(ix86_attribute_table, ix86_handle_cdecl_attribute,
ix86_handle_regparm_attribute): New.
* config/i386/winnt.c (i386_pe_valid_decl_attribute_p,
i386_pe_valid_type_attribute_p): Remove.
(ix86_handle_dll_attribute, ix86_handle_shared_attribute): New.
* config/ia64/ia64.c (ia64_valid_type_attribute): Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(ia64_attribute_table): New.
* config/m32r/m32r.c (m32r_valid_decl_attribute, interrupt_ident1,
interrupt_ident2, model_ident1, model_ident2): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(init_idents): Update.
(m32r_attribute_table, m32r_handle_model_attribute): New.
* config/m68hc11/m68hc11.c (m68hc11_valid_type_attribute_p):
Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(m68hc11_attribute_table, m68hc11_handle_fntype_attribute): New.
* config/mcore/mcore.c (mcore_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(mcore_attribute_table, mcore_handle_naked_attribute): New.
* config/ns32k/ns32k.c (ns32k_valid_type_attribute_p): Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(ns32k_attribute_table, ns32k_handle_fntype_attribute): New.
* config/rs6000/rs6000.c (rs6000_valid_type_attribute_p): Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(rs6000_attribute_table, rs6000_handle_longcall_attribute): New.
* config/sh/sh.c (sh_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(sh_attribute_table, sh_handle_interrupt_handler_attribute,
sh_handle_sp_switch_attribute, sh_handle_trap_exit_attribute):
New.
* config/stormy16/stormy16.c (stormy16_valid_type_attribute):
Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define
(TARGET_ATTRIBUTE_TABLE): Define.
(stormy16_attribute_table, stormy16_handle_interrupt_attribute):
New.
* config/v850/v850.c (v850_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(v850_attribute_table, v850_handle_interrupt_attribute,
v850_handle_data_area_attribute): New.
* config/v850/v850-c.c (mark_current_function_as_interrupt):
Return void. Call decl_attributes instead of
valid_machine_attribute.
cp:
Table-driven attributes.
* decl.c: Rename DECL_MACHINE_ATTRIBUTES to DECL_ATTRIBUTES.
* decl2.c (cplus_decl_attributes): Only take one attributes
parameter.
* cp-tree.c (cplus_decl_attributes): Update prototype.
* class.c (finish_struct), decl.c (start_decl, start_function),
decl2.c (grokfield), friend.c (do_friend), parse.y
(parse_bitfield): Update calls to cplus_decl_attributes.
* decl.c (grokdeclarator): Take a pointer to a single ordinary
attribute list.
* decl.h (grokdeclarator): Update prototype.
* decl2.c (grokfield): Take a single ordinary attribute list.
* friend.c (do_friend): Likewise.
* decl.c (shadow_tag, groktypename, start_decl,
start_handler_parms, grokdeclarator, grokparms, start_function,
start_method), decl2.c (grokfield, grokbitfield, grokoptypename),
parse.y (parse_field, parse_bitfield, component_decl_1), pt.c
(process_template_parm, do_decl_instantiation): Pass single
ordinary attribute lists around.
* decl.c (grokdeclarator): Correct handling of nested attributes.
Revert the patch
1998-10-18 Jason Merrill <jason@yorick.cygnus.com>
* decl.c (grokdeclarator): Embedded attrs bind to the right,
not the left.
.
* cp-tree.h (cp_valid_lang_attribute): Remove declaration
(cp_attribute_table): Declare.
* decl.c (valid_lang_attribute): Don't define.
(lang_attribute_table): Define.
(init_decl_processing): Initialize lang_attribute_table instead of
valid_lang_attribute.
* tree.c (cp_valid_lang_attribute): Remove.
(handle_java_interface_attribute, handle_com_interface_attribute,
handle_init_priority_attribute): New functions.
(cp_attribute_table): New array.
* decl2.c (import_export_class): Don't use
targetm.valid_type_attribute.
testsuite:
Table-driven attributes.
* g++.dg/ext/attrib1.C: New test.
From-SVN: r45718
2001-09-21 03:27:06 +02:00
|
|
|
The following describes the formal semantics of this syntax. It will make the
|
2001-01-27 22:29:53 +01:00
|
|
|
most sense if you are familiar with the formal specification of
|
|
|
|
declarators in the ISO C standard.
|
|
|
|
|
|
|
|
Consider (as in C99 subclause 6.7.5 paragraph 4) a declaration @code{T
|
|
|
|
D1}, where @code{T} contains declaration specifiers that specify a type
|
|
|
|
@var{Type} (such as @code{int}) and @code{D1} is a declarator that
|
|
|
|
contains an identifier @var{ident}. The type specified for @var{ident}
|
|
|
|
for derived declarators whose type does not include an attribute
|
|
|
|
specifier is as in the ISO C standard.
|
|
|
|
|
|
|
|
If @code{D1} has the form @code{( @var{attribute-specifier-list} D )},
|
|
|
|
and the declaration @code{T D} specifies the type
|
|
|
|
``@var{derived-declarator-type-list} @var{Type}'' for @var{ident}, then
|
|
|
|
@code{T D1} specifies the type ``@var{derived-declarator-type-list}
|
|
|
|
@var{attribute-specifier-list} @var{Type}'' for @var{ident}.
|
|
|
|
|
|
|
|
If @code{D1} has the form @code{*
|
|
|
|
@var{type-qualifier-and-attribute-specifier-list} D}, and the
|
|
|
|
declaration @code{T D} specifies the type
|
|
|
|
``@var{derived-declarator-type-list} @var{Type}'' for @var{ident}, then
|
|
|
|
@code{T D1} specifies the type ``@var{derived-declarator-type-list}
|
|
|
|
@var{type-qualifier-and-attribute-specifier-list} @var{Type}'' for
|
|
|
|
@var{ident}.
|
|
|
|
|
2002-02-23 13:59:09 +01:00
|
|
|
For example,
|
2001-08-18 23:02:44 +02:00
|
|
|
|
|
|
|
@smallexample
|
|
|
|
void (__attribute__((noreturn)) ****f) (void);
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@noindent
|
|
|
|
specifies the type ``pointer to pointer to pointer to pointer to
|
|
|
|
non-returning function returning @code{void}''. As another example,
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
char *__attribute__((aligned(8))) *f;
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@noindent
|
|
|
|
specifies the type ``pointer to 8-byte-aligned pointer to @code{char}''.
|
Table-driven attributes.
* c-decl.c, config/alpha/alpha.c, config/arc/arc.c,
config/arm/arm.c, config/arm/pe.c, config/avr/avr.c,
config/avr/avr.h, config/d30v/d30v.h, config/fr30/fr30.h,
config/h8300/h8300.c, config/i386/cygwin.h, config/i386/winnt.c,
config/m32r/m32r.c, config/mcore/mcore.c, config/sh/sh.c,
config/stormy16/stormy16.h, config/v850/v850.c, doc/c-tree.texi,
doc/tm.texi, ggc-common.c, integrate.c, print-tree.c, tree.c,
tree.h: Rename DECL_MACHINE_ATTRIBUTES to DECL_ATTRIBUTES.
* tree.h (struct tree_decl): Change machine_attributes to
attributes.
* doc/c-tree.texi: Document that all attributes are now attached
to decls and types.
* c-common.c (add_attribute, attrtab, attrtab_idx,
default_valid_lang_attribute, valid_lang_attribute): Remove.
(attribute_tables, attributes_initialized,
c_common_attribute_table, default_lang_attribute_table): New
variables.
(handle_packed_attribute, handle_nocommon_attribute,
handle_common_attribute, handle_noreturn_attribute,
handle_unused_attribute, handle_const_attribute,
handle_transparent_union_attribute, handle_constructor_attribute,
handle_destructor_attribute, handle_mode_attribute,
handle_section_attribute, handle_aligned_attribute,
handle_weak_attribute, handle_alias_attribute,
handle_no_instrument_function_attribute,
handle_no_check_memory_usage_attribute, handle_malloc_attribute,
handle_no_limit_stack_attribute, handle_pure_attribute): New
functions.
(init_attributes, decl_attributes): Rewrite to implement
table-driven attributes.
* c-common.h (enum attribute_flags): Move to tree.h.
* c-format.c (decl_handle_format_attribute,
decl_handle_format_arg_attribute): Rename to
handle_format_attribute and handle_format_arg_attribute. Update
for table-driven attributes.
* c-common.h (decl_handle_format_attribute,
decl_handle_format_arg_attribute): Remove prototypes.
(handle_format_attribute, handle_format_arg_attribute): Add
prototypes.
* c-decl.c (grokdeclarator): Handle attributes nested inside
declarators.
* c-parse.in (setattrs, maybe_setattrs): Remove.
(maybe_type_quals_setattrs): Rename to maybe_type_quals_attrs.
Update to handle nested attributes properly.
(maybe_resetattrs, after_type_declarator,
parm_declarator_nostarttypename, notype_declarator, absdcl1_noea,
absdcl1_ea, direct_absdcl1): Update to handle nested attributes
properly.
(make_pointer_declarator): Update to handle nested attributes
properly.
* doc/extend.texi: Update documentation of limits of attributes
syntax. Warn about problems with attribute semantics in C++.
* target.h (struct target): Remove valid_decl_attribute and
valid_type_attribute. Add attribute_table and
function_attribute_inlinable_p.
* target-def.h (TARGET_VALID_DECL_ATTRIBUTE,
TARGET_VALID_TYPE_ATTRIBUTE): Remove.
(TARGET_ATTRIBUTE_TABLE, TARGET_FUNCTION_ATTRIBUTE_INLINABLE_P):
Add.
(TARGET_INITIALIZER): Update.
* integrate.c (FUNCTION_ATTRIBUTE_INLINABLE_P): Remove default
definition.
(function_attribute_inlinable_p): New function. Check for the
presence of any machine attributes before using
targetm.function_attribute_inlinable_p.
(function_cannot_inline_p): Update.
* Makefile.in (integrate.o): Update dependencies.
* doc/tm.texi: Update documentation of target attributes and
example definition of TARGET_VALID_TYPE_ATTRIBUTE.
* tree.c (default_valid_attribute_p, valid_machine_attribute):
Remove.
(default_target_attribute_table,
default_function_attribute_inlinable_p): New.
(lookup_attribute): Update comment to clarify handling of multiple
attributes with the same name.
(merge_attributes, attribute_list_contained): Allow multiple
attributes with the same name but different arguments to appear in
the same attribute list.
* tree.h (default_valid_attribute_p): Remove prototype.
(struct attribute_spec): New.
(default_target_attribute_table): Declare.
(enum attribute_flags): Move from c-common.h. Add
ATTR_FLAG_TYPE_IN_PLACE.
(default_function_attribute_inlinable_p): Declare.
* config/alpha/alpha.c (vms_valid_decl_attribute_p): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(vms_attribute_table): New.
* config/arc/arc.c (arc_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(arc_attribute_table, arc_handle_interrupt_attribute): New.
* config/arm/arm.c (arm_valid_type_attribute_p,
arm_valid_decl_attribute_p, arm_pe_valid_decl_attribute_p):
Remove.
(TARGET_VALID_TYPE_ATTRIBUTE, TARGET_VALID_DECL_ATTRIBUTE): Don't
define.
(TARGET_ATTRIBUTE_TABLE): Define.
(arm_attribute_table, arm_handle_fndecl_attribute,
arm_handle_isr_attribute): New.
* config/avr/avr.c (avr_valid_type_attribute,
avr_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE, TARGET_VALID_TYPE_ATTRIBUTE): Don't
define.
(TARGET_ATTRIBUTE_TABLE): Define.
(avr_attribute_table, avr_handle_progmem_attribute,
avr_handle_fndecl_attribute): New.
* config/c4x/c4x.c (c4x_valid_type_attribute_p): Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(c4x_attribute_table, c4x_handle_fntype_attribute): New.
* config/h8300/h8300.c (h8300_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(h8300_attribute_table, h8300_handle_fndecl_attribute,
h8300_handle_eightbit_data_attribute,
h8300_handle_tiny_data_attribute): New.
* config/i386/i386-protos.h (ix86_valid_type_attribute_p,
i386_pe_valid_decl_attribute_p, i386_pe_valid_type_attribute_p):
Remove prototypes.
(ix86_handle_dll_attribute, ix86_handle_shared_attribute): New
declarations.
* config/i386/i386.c (ix86_valid_type_attribute_p: Remove.
(TARGET_VALID_TYPE_ATTRIBUTE, TARGET_VALID_DECL_ATTRIBUTE): Don't
define.
(TARGET_ATTRIBUTE_TABLE): Define.
(ix86_attribute_table, ix86_handle_cdecl_attribute,
ix86_handle_regparm_attribute): New.
* config/i386/winnt.c (i386_pe_valid_decl_attribute_p,
i386_pe_valid_type_attribute_p): Remove.
(ix86_handle_dll_attribute, ix86_handle_shared_attribute): New.
* config/ia64/ia64.c (ia64_valid_type_attribute): Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(ia64_attribute_table): New.
* config/m32r/m32r.c (m32r_valid_decl_attribute, interrupt_ident1,
interrupt_ident2, model_ident1, model_ident2): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(init_idents): Update.
(m32r_attribute_table, m32r_handle_model_attribute): New.
* config/m68hc11/m68hc11.c (m68hc11_valid_type_attribute_p):
Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(m68hc11_attribute_table, m68hc11_handle_fntype_attribute): New.
* config/mcore/mcore.c (mcore_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(mcore_attribute_table, mcore_handle_naked_attribute): New.
* config/ns32k/ns32k.c (ns32k_valid_type_attribute_p): Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(ns32k_attribute_table, ns32k_handle_fntype_attribute): New.
* config/rs6000/rs6000.c (rs6000_valid_type_attribute_p): Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(rs6000_attribute_table, rs6000_handle_longcall_attribute): New.
* config/sh/sh.c (sh_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(sh_attribute_table, sh_handle_interrupt_handler_attribute,
sh_handle_sp_switch_attribute, sh_handle_trap_exit_attribute):
New.
* config/stormy16/stormy16.c (stormy16_valid_type_attribute):
Remove.
(TARGET_VALID_TYPE_ATTRIBUTE): Don't define
(TARGET_ATTRIBUTE_TABLE): Define.
(stormy16_attribute_table, stormy16_handle_interrupt_attribute):
New.
* config/v850/v850.c (v850_valid_decl_attribute): Remove.
(TARGET_VALID_DECL_ATTRIBUTE): Don't define.
(TARGET_ATTRIBUTE_TABLE): Define.
(v850_attribute_table, v850_handle_interrupt_attribute,
v850_handle_data_area_attribute): New.
* config/v850/v850-c.c (mark_current_function_as_interrupt):
Return void. Call decl_attributes instead of
valid_machine_attribute.
cp:
Table-driven attributes.
* decl.c: Rename DECL_MACHINE_ATTRIBUTES to DECL_ATTRIBUTES.
* decl2.c (cplus_decl_attributes): Only take one attributes
parameter.
* cp-tree.c (cplus_decl_attributes): Update prototype.
* class.c (finish_struct), decl.c (start_decl, start_function),
decl2.c (grokfield), friend.c (do_friend), parse.y
(parse_bitfield): Update calls to cplus_decl_attributes.
* decl.c (grokdeclarator): Take a pointer to a single ordinary
attribute list.
* decl.h (grokdeclarator): Update prototype.
* decl2.c (grokfield): Take a single ordinary attribute list.
* friend.c (do_friend): Likewise.
* decl.c (shadow_tag, groktypename, start_decl,
start_handler_parms, grokdeclarator, grokparms, start_function,
start_method), decl2.c (grokfield, grokbitfield, grokoptypename),
parse.y (parse_field, parse_bitfield, component_decl_1), pt.c
(process_template_parm, do_decl_instantiation): Pass single
ordinary attribute lists around.
* decl.c (grokdeclarator): Correct handling of nested attributes.
Revert the patch
1998-10-18 Jason Merrill <jason@yorick.cygnus.com>
* decl.c (grokdeclarator): Embedded attrs bind to the right,
not the left.
.
* cp-tree.h (cp_valid_lang_attribute): Remove declaration
(cp_attribute_table): Declare.
* decl.c (valid_lang_attribute): Don't define.
(lang_attribute_table): Define.
(init_decl_processing): Initialize lang_attribute_table instead of
valid_lang_attribute.
* tree.c (cp_valid_lang_attribute): Remove.
(handle_java_interface_attribute, handle_com_interface_attribute,
handle_init_priority_attribute): New functions.
(cp_attribute_table): New array.
* decl2.c (import_export_class): Don't use
targetm.valid_type_attribute.
testsuite:
Table-driven attributes.
* g++.dg/ext/attrib1.C: New test.
From-SVN: r45718
2001-09-21 03:27:06 +02:00
|
|
|
Note again that this does not work with most attributes; for example,
|
|
|
|
the usage of @samp{aligned} and @samp{noreturn} attributes given above
|
|
|
|
is not yet supported.
|
|
|
|
|
|
|
|
For compatibility with existing code written for compiler versions that
|
|
|
|
did not implement attributes on nested declarators, some laxity is
|
|
|
|
allowed in the placing of attributes. If an attribute that only applies
|
|
|
|
to types is applied to a declaration, it will be treated as applying to
|
|
|
|
the type of that declaration. If an attribute that only applies to
|
|
|
|
declarations is applied to the type of a declaration, it will be treated
|
|
|
|
as applying to that declaration; and, for compatibility with code
|
|
|
|
placing the attributes immediately before the identifier declared, such
|
|
|
|
an attribute applied to a function return type will be treated as
|
|
|
|
applying to the function type, and such an attribute applied to an array
|
|
|
|
element type will be treated as applying to the array type. If an
|
|
|
|
attribute that only applies to function types is applied to a
|
|
|
|
pointer-to-function type, it will be treated as applying to the pointer
|
|
|
|
target type; if such an attribute is applied to a function return type
|
|
|
|
that is not a pointer-to-function type, it will be treated as applying
|
|
|
|
to the function type.
|
2001-01-27 22:29:53 +01:00
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@node Function Prototypes
|
|
|
|
@section Prototypes and Old-Style Function Definitions
|
|
|
|
@cindex function prototype declarations
|
|
|
|
@cindex old-style function definitions
|
|
|
|
@cindex promotion of formal parameters
|
|
|
|
|
2001-01-12 19:51:27 +01:00
|
|
|
GNU C extends ISO C to allow a function prototype to override a later
|
1996-09-24 00:41:16 +02:00
|
|
|
old-style non-prototype definition. Consider the following example:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
/* @r{Use prototypes unless the compiler is old-fashioned.} */
|
1997-11-14 02:56:51 +01:00
|
|
|
#ifdef __STDC__
|
1996-09-24 00:41:16 +02:00
|
|
|
#define P(x) x
|
|
|
|
#else
|
|
|
|
#define P(x) ()
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* @r{Prototype function declaration.} */
|
|
|
|
int isroot P((uid_t));
|
|
|
|
|
|
|
|
/* @r{Old-style function definition.} */
|
|
|
|
int
|
|
|
|
isroot (x) /* ??? lossage here ??? */
|
|
|
|
uid_t x;
|
|
|
|
@{
|
|
|
|
return x == 0;
|
|
|
|
@}
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-01-12 19:51:27 +01:00
|
|
|
Suppose the type @code{uid_t} happens to be @code{short}. ISO C does
|
1996-09-24 00:41:16 +02:00
|
|
|
not allow this example, because subword arguments in old-style
|
|
|
|
non-prototype definitions are promoted. Therefore in this example the
|
|
|
|
function definition's argument is really an @code{int}, which does not
|
|
|
|
match the prototype argument type of @code{short}.
|
|
|
|
|
2001-01-12 19:51:27 +01:00
|
|
|
This restriction of ISO C makes it hard to write code that is portable
|
1996-09-24 00:41:16 +02:00
|
|
|
to traditional C compilers, because the programmer does not know
|
|
|
|
whether the @code{uid_t} type is @code{short}, @code{int}, or
|
|
|
|
@code{long}. Therefore, in cases like these GNU C allows a prototype
|
|
|
|
to override a later old-style definition. More precisely, in GNU C, a
|
|
|
|
function prototype argument type overrides the argument type specified
|
|
|
|
by a later old-style definition if the former type is the same as the
|
|
|
|
latter type before promotion. Thus in GNU C the above example is
|
|
|
|
equivalent to the following:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
int isroot (uid_t);
|
|
|
|
|
|
|
|
int
|
|
|
|
isroot (uid_t x)
|
|
|
|
@{
|
|
|
|
return x == 0;
|
|
|
|
@}
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-08-18 23:02:44 +02:00
|
|
|
@noindent
|
1996-09-24 00:41:16 +02:00
|
|
|
GNU C++ does not support old-style function definitions, so this
|
|
|
|
extension is irrelevant.
|
|
|
|
|
|
|
|
@node C++ Comments
|
|
|
|
@section C++ Style Comments
|
|
|
|
@cindex //
|
|
|
|
@cindex C++ comments
|
|
|
|
@cindex comments, C++ style
|
|
|
|
|
|
|
|
In GNU C, you may use C++ style comments, which start with @samp{//} and
|
|
|
|
continue until the end of the line. Many other C implementations allow
|
c-common.c, [...]: Delete code implementing -traditional mode.
* c-common.c, c-common.h, c-decl.c, c-lex.c, c-parse.in,
c-tree.h, c-typeck.c, cppexp.c, cpplex.c, cpplib.c, cpplib.h,
cppmacro.c, objc/lang-specs.h, objc/objc-act.c,
builtin-types.def, builtins.def, dwarf2out.c, dwarfout.c,
gcc.c, toplev.c: Delete code implementing -traditional mode.
* ada/misc.c, ch/ch-tree.h, ch/decl.c, cp/decl2.c, f/com.c,
f/lex.c, f/top.c, java/builtins.c, java/decl.c: Delete
traditional-mode-related code copied from the C front end
but not used, or used only to permit the compiler to link.
* doc/bugreport.texi, doc/cpp.texi, doc/extend.texi,
doc/invoke.texi, doc/standards.texi, doc/trouble.texi:
Document removal of -traditional mode for compilation, and
remove documentation only relevant to that mode.
* config/nextstep.h, config/ptx4.h, config/svr4.h,
config/convex/convex.h, config/d30v/d30v.h,
config/i386/dgux.h, config/i386/osf1elf.h,
config/i386/osfelf.h, config/i386/osfrose.h,
config/i386/sco5.h, config/i386/sol2.h, config/m68k/a-ux.h,
config/m68k/hp310.h, config/m88k/dgux.h,
config/m88k/dguxbcs.h, config/m88k/luna.h, config/m88k/m88k.c,
config/m88k/m88k.h, config/m88k/openbsd.h,
config/mips/abi64.h, config/mips/osfrose.h,
config/mips/svr4-5.h, config/mips/svr4-t.h,
config/sparc/sol2-sld-64.h, config/sparc/sol2.h,
config/stormy16/stormy16.h: Remove all references to
-traditional from target specs. Delete all mention of the
no-longer-necessary TRADITIONAL_RETURN_FLOAT macro. Also
delete a couple of commented-out definitions of
DOLLARS_IN_IDENTIFIERS, with (incorrect) commentary referring
to -traditional.
* system.h: Poison TRADITIONAL_RETURN_FLOAT.
* doc/tm.texi: Remove mention of TRADITIONAL_RETURN_FLOAT macro.
* testsuite/gcc.c-torture/execute/920730-1t.c,
testsuite/gcc.c-torture/execute/920730-1t.x,
testsuite/gcc.dg/ext-glob.c: Delete test cases, only relevant
to -traditional.
From-SVN: r50110
2002-02-27 19:48:07 +01:00
|
|
|
such comments, and they are included in the 1999 C standard. However,
|
|
|
|
C++ style comments are not recognized if you specify an @option{-std}
|
|
|
|
option specifying a version of ISO C before C99, or @option{-ansi}
|
|
|
|
(equivalent to @option{-std=c89}).
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@node Dollar Signs
|
|
|
|
@section Dollar Signs in Identifier Names
|
|
|
|
@cindex $
|
|
|
|
@cindex dollar signs in identifier names
|
|
|
|
@cindex identifier names, dollar signs in
|
|
|
|
|
1996-10-09 22:19:37 +02:00
|
|
|
In GNU C, you may normally use dollar signs in identifier names.
|
|
|
|
This is because many traditional C implementations allow such identifiers.
|
|
|
|
However, dollar signs in identifiers are not supported on a few target
|
|
|
|
machines, typically because the target assembler does not allow them.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@node Character Escapes
|
|
|
|
@section The Character @key{ESC} in Constants
|
|
|
|
|
|
|
|
You can use the sequence @samp{\e} in a string or character constant to
|
|
|
|
stand for the ASCII character @key{ESC}.
|
|
|
|
|
|
|
|
@node Alignment
|
|
|
|
@section Inquiring on Alignment of Types or Variables
|
|
|
|
@cindex alignment
|
|
|
|
@cindex type alignment
|
|
|
|
@cindex variable alignment
|
|
|
|
|
|
|
|
The keyword @code{__alignof__} allows you to inquire about how an object
|
|
|
|
is aligned, or the minimum alignment usually required by a type. Its
|
|
|
|
syntax is just like @code{sizeof}.
|
|
|
|
|
|
|
|
For example, if the target machine requires a @code{double} value to be
|
|
|
|
aligned on an 8-byte boundary, then @code{__alignof__ (double)} is 8.
|
|
|
|
This is true on many RISC machines. On more traditional machine
|
|
|
|
designs, @code{__alignof__ (double)} is 4 or even 2.
|
|
|
|
|
|
|
|
Some machines never actually require alignment; they allow reference to any
|
2003-07-21 17:08:55 +02:00
|
|
|
data type even at an odd address. For these machines, @code{__alignof__}
|
1996-09-24 00:41:16 +02:00
|
|
|
reports the @emph{recommended} alignment of a type.
|
|
|
|
|
2002-01-23 08:51:16 +01:00
|
|
|
If the operand of @code{__alignof__} is an lvalue rather than a type,
|
|
|
|
its value is the required alignment for its type, taking into account
|
|
|
|
any minimum alignment specified with GCC's @code{__attribute__}
|
|
|
|
extension (@pxref{Variable Attributes}). For example, after this
|
|
|
|
declaration:
|
1996-09-24 00:41:16 +02:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
struct foo @{ int x; char y; @} foo1;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
2002-01-23 08:51:16 +01:00
|
|
|
the value of @code{__alignof__ (foo1.y)} is 1, even though its actual
|
|
|
|
alignment is probably 2 or 4, the same as @code{__alignof__ (int)}.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2000-03-14 09:24:21 +01:00
|
|
|
It is an error to ask for the alignment of an incomplete type.
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@node Variable Attributes
|
|
|
|
@section Specifying Attributes of Variables
|
|
|
|
@cindex attribute of variables
|
|
|
|
@cindex variable attributes
|
|
|
|
|
|
|
|
The keyword @code{__attribute__} allows you to specify special
|
|
|
|
attributes of variables or structure fields. This keyword is followed
|
2003-05-06 01:12:37 +02:00
|
|
|
by an attribute specification inside double parentheses. Some
|
|
|
|
attributes are currently defined generically for variables.
|
|
|
|
Other attributes are defined for variables on particular target
|
|
|
|
systems. Other attributes are available for functions
|
|
|
|
(@pxref{Function Attributes}) and for types (@pxref{Type Attributes}).
|
|
|
|
Other front ends might define more attributes
|
|
|
|
(@pxref{C++ Extensions,,Extensions to the C++ Language}).
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
You may also specify attributes with @samp{__} preceding and following
|
|
|
|
each keyword. This allows you to use them in header files without
|
|
|
|
being concerned about a possible macro of the same name. For example,
|
|
|
|
you may use @code{__aligned__} instead of @code{aligned}.
|
|
|
|
|
2001-01-27 22:29:53 +01:00
|
|
|
@xref{Attribute Syntax}, for details of the exact syntax for using
|
|
|
|
attributes.
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@table @code
|
|
|
|
@cindex @code{aligned} attribute
|
|
|
|
@item aligned (@var{alignment})
|
|
|
|
This attribute specifies a minimum alignment for the variable or
|
|
|
|
structure field, measured in bytes. For example, the declaration:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
int x __attribute__ ((aligned (16))) = 0;
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@noindent
|
|
|
|
causes the compiler to allocate the global variable @code{x} on a
|
|
|
|
16-byte boundary. On a 68040, this could be used in conjunction with
|
|
|
|
an @code{asm} expression to access the @code{move16} instruction which
|
|
|
|
requires 16-byte aligned operands.
|
|
|
|
|
|
|
|
You can also specify the alignment of structure fields. For example, to
|
|
|
|
create a double-word aligned @code{int} pair, you could write:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
struct foo @{ int x[2] __attribute__ ((aligned (8))); @};
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@noindent
|
|
|
|
This is an alternative to creating a union with a @code{double} member
|
|
|
|
that forces the union to be double-word aligned.
|
|
|
|
|
|
|
|
As in the preceding examples, you can explicitly specify the alignment
|
|
|
|
(in bytes) that you wish the compiler to use for a given variable or
|
|
|
|
structure field. Alternatively, you can leave out the alignment factor
|
|
|
|
and just ask the compiler to align a variable or field to the maximum
|
|
|
|
useful alignment for the target machine you are compiling for. For
|
|
|
|
example, you could write:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
short array[3] __attribute__ ((aligned));
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
Whenever you leave out the alignment factor in an @code{aligned} attribute
|
|
|
|
specification, the compiler automatically sets the alignment for the declared
|
|
|
|
variable or field to the largest alignment which is ever used for any data
|
|
|
|
type on the target machine you are compiling for. Doing this can often make
|
|
|
|
copy operations more efficient, because the compiler can use whatever
|
|
|
|
instructions copy the biggest chunks of memory when performing copies to
|
|
|
|
or from the variables or fields that you have aligned this way.
|
|
|
|
|
|
|
|
The @code{aligned} attribute can only increase the alignment; but you
|
|
|
|
can decrease it by specifying @code{packed} as well. See below.
|
|
|
|
|
|
|
|
Note that the effectiveness of @code{aligned} attributes may be limited
|
|
|
|
by inherent limitations in your linker. On many systems, the linker is
|
|
|
|
only able to arrange for variables to be aligned up to a certain maximum
|
|
|
|
alignment. (For some linkers, the maximum supported alignment may
|
|
|
|
be very very small.) If your linker is only able to align variables
|
|
|
|
up to a maximum of 8 byte alignment, then specifying @code{aligned(16)}
|
|
|
|
in an @code{__attribute__} will still only provide you with 8 byte
|
|
|
|
alignment. See your linker documentation for further information.
|
|
|
|
|
2003-06-04 19:06:00 +02:00
|
|
|
@item cleanup (@var{cleanup_function})
|
|
|
|
@cindex @code{cleanup} attribute
|
|
|
|
The @code{cleanup} attribute runs a function when the variable goes
|
|
|
|
out of scope. This attribute can only be applied to auto function
|
|
|
|
scope variables; it may not be applied to parameters or variables
|
|
|
|
with static storage duration. The function must take one parameter,
|
|
|
|
a pointer to a type compatible with the variable. The return value
|
|
|
|
of the function (if any) is ignored.
|
|
|
|
|
|
|
|
If @option{-fexceptions} is enabled, then @var{cleanup_function}
|
|
|
|
will be run during the stack unwinding that happens during the
|
|
|
|
processing of the exception. Note that the @code{cleanup} attribute
|
|
|
|
does not allow the exception to be caught, only to perform an action.
|
|
|
|
It is undefined what happens if @var{cleanup_function} does not
|
|
|
|
return normally.
|
|
|
|
|
2003-05-06 01:12:37 +02:00
|
|
|
@item common
|
|
|
|
@itemx nocommon
|
|
|
|
@cindex @code{common} attribute
|
|
|
|
@cindex @code{nocommon} attribute
|
|
|
|
@opindex fcommon
|
|
|
|
@opindex fno-common
|
|
|
|
The @code{common} attribute requests GCC to place a variable in
|
|
|
|
``common'' storage. The @code{nocommon} attribute requests the
|
contrib.texi, [...]: Improve Texinfo formatting.
* doc/contrib.texi, doc/cpp.texi, doc/cppopts.texi,
doc/extend.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/sourcebuild.texi, doc/tm.texi: Improve Texinfo formatting.
From-SVN: r89725
2004-10-28 03:00:31 +02:00
|
|
|
opposite---to allocate space for it directly.
|
2003-05-06 01:12:37 +02:00
|
|
|
|
c-tree.texi, [...]: Remove trailing whitespace.
* doc/c-tree.texi, doc/cpp.texi, doc/extend.texi,
doc/frontends.texi, doc/gcov.texi, doc/gty.texi, doc/install.texi,
doc/invoke.texi, doc/libgcc.texi, doc/md.texi, doc/rtl.texi,
doc/sourcebuild.texi, doc/standards.texi, doc/tm.texi,
doc/trouble.texi: Remove trailing whitespace.
From-SVN: r76098
2004-01-18 12:57:17 +01:00
|
|
|
These attributes override the default chosen by the
|
2003-05-06 01:12:37 +02:00
|
|
|
@option{-fno-common} and @option{-fcommon} flags respectively.
|
|
|
|
|
|
|
|
@item deprecated
|
|
|
|
@cindex @code{deprecated} attribute
|
|
|
|
The @code{deprecated} attribute results in a warning if the variable
|
|
|
|
is used anywhere in the source file. This is useful when identifying
|
|
|
|
variables that are expected to be removed in a future version of a
|
|
|
|
program. The warning also includes the location of the declaration
|
|
|
|
of the deprecated variable, to enable users to easily find further
|
|
|
|
information about why the variable is deprecated, or what they should
|
2003-07-21 17:08:55 +02:00
|
|
|
do instead. Note that the warning only occurs for uses:
|
2003-05-06 01:12:37 +02:00
|
|
|
|
|
|
|
@smallexample
|
|
|
|
extern int old_var __attribute__ ((deprecated));
|
|
|
|
extern int old_var;
|
|
|
|
int new_fn () @{ return old_var; @}
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
results in a warning on line 3 but not line 2.
|
|
|
|
|
|
|
|
The @code{deprecated} attribute can also be used for functions and
|
|
|
|
types (@pxref{Function Attributes}, @pxref{Type Attributes}.)
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@item mode (@var{mode})
|
|
|
|
@cindex @code{mode} attribute
|
|
|
|
This attribute specifies the data type for the declaration---whichever
|
|
|
|
type corresponds to the mode @var{mode}. This in effect lets you
|
|
|
|
request an integer or floating point type according to its width.
|
|
|
|
|
|
|
|
You may also specify a mode of @samp{byte} or @samp{__byte__} to
|
|
|
|
indicate the mode corresponding to a one-byte integer, @samp{word} or
|
|
|
|
@samp{__word__} for the mode of a one-word integer, and @samp{pointer}
|
|
|
|
or @samp{__pointer__} for the mode used to represent pointers.
|
|
|
|
|
|
|
|
@item packed
|
|
|
|
@cindex @code{packed} attribute
|
|
|
|
The @code{packed} attribute specifies that a variable or structure field
|
|
|
|
should have the smallest possible alignment---one byte for a variable,
|
|
|
|
and one bit for a field, unless you specify a larger value with the
|
|
|
|
@code{aligned} attribute.
|
|
|
|
|
|
|
|
Here is a structure in which the field @code{x} is packed, so that it
|
|
|
|
immediately follows @code{a}:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
struct foo
|
|
|
|
@{
|
|
|
|
char a;
|
|
|
|
int x[2] __attribute__ ((packed));
|
|
|
|
@};
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-06-13 00:40:00 +02:00
|
|
|
@item section ("@var{section-name}")
|
1996-09-24 00:41:16 +02:00
|
|
|
@cindex @code{section} variable attribute
|
|
|
|
Normally, the compiler places the objects it generates in sections like
|
|
|
|
@code{data} and @code{bss}. Sometimes, however, you need additional sections,
|
|
|
|
or you need certain particular variables to appear in special sections,
|
|
|
|
for example to map to special hardware. The @code{section}
|
|
|
|
attribute specifies that a variable (or function) lives in a particular
|
|
|
|
section. For example, this small program uses several specific section names:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
struct duart a __attribute__ ((section ("DUART_A"))) = @{ 0 @};
|
|
|
|
struct duart b __attribute__ ((section ("DUART_B"))) = @{ 0 @};
|
|
|
|
char stack[10000] __attribute__ ((section ("STACK"))) = @{ 0 @};
|
|
|
|
int init_data __attribute__ ((section ("INITDATA"))) = 0;
|
|
|
|
|
|
|
|
main()
|
|
|
|
@{
|
|
|
|
/* Initialize stack pointer */
|
|
|
|
init_sp (stack + sizeof (stack));
|
|
|
|
|
|
|
|
/* Initialize initialized data */
|
|
|
|
memcpy (&init_data, &data, &edata - &data);
|
|
|
|
|
|
|
|
/* Turn on the serial ports */
|
|
|
|
init_duart (&a);
|
|
|
|
init_duart (&b);
|
|
|
|
@}
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@noindent
|
|
|
|
Use the @code{section} attribute with an @emph{initialized} definition
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
of a @emph{global} variable, as shown in the example. GCC issues
|
1996-09-24 00:41:16 +02:00
|
|
|
a warning and otherwise ignores the @code{section} attribute in
|
|
|
|
uninitialized variable declarations.
|
|
|
|
|
|
|
|
You may only use the @code{section} attribute with a fully initialized
|
|
|
|
global definition because of the way linkers work. The linker requires
|
|
|
|
each object be defined once, with the exception that uninitialized
|
|
|
|
variables tentatively go in the @code{common} (or @code{bss}) section
|
2001-06-13 00:40:00 +02:00
|
|
|
and can be multiply ``defined''. You can force a variable to be
|
|
|
|
initialized with the @option{-fno-common} flag or the @code{nocommon}
|
1996-09-24 00:41:16 +02:00
|
|
|
attribute.
|
|
|
|
|
|
|
|
Some file formats do not support arbitrary sections so the @code{section}
|
|
|
|
attribute is not available on all platforms.
|
|
|
|
If you need to map the entire contents of a module to a particular
|
|
|
|
section, consider using the facilities of the linker instead.
|
|
|
|
|
1999-09-14 12:06:06 +02:00
|
|
|
@item shared
|
|
|
|
@cindex @code{shared} variable attribute
|
2004-01-18 03:10:34 +01:00
|
|
|
On Microsoft Windows, in addition to putting variable definitions in a named
|
2001-04-28 13:35:04 +02:00
|
|
|
section, the section can also be shared among all running copies of an
|
c-tree.texi, [...]: Replace . at end of sentences preceded by a capital letter with @..
* doc/c-tree.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppinternals.texi, doc/extend.texi, doc/gcc.texi,
doc/gcov.texi, doc/install-old.texi, doc/install.texi,
doc/invoke.texi, doc/md.texi, doc/rtl.texi, doc/tm.texi: Replace
. at end of sentences preceded by a capital letter with @..
From-SVN: r43611
2001-06-27 17:04:16 +02:00
|
|
|
executable or DLL@. For example, this small program defines shared data
|
2001-06-13 00:40:00 +02:00
|
|
|
by putting it in a named section @code{shared} and marking the section
|
1999-09-14 12:06:06 +02:00
|
|
|
shareable:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
int foo __attribute__((section ("shared"), shared)) = 0;
|
|
|
|
|
|
|
|
int
|
|
|
|
main()
|
|
|
|
@{
|
2001-05-31 06:27:52 +02:00
|
|
|
/* Read and write foo. All running
|
|
|
|
copies see the same value. */
|
1999-09-14 12:06:06 +02:00
|
|
|
return 0;
|
|
|
|
@}
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@noindent
|
|
|
|
You may only use the @code{shared} attribute along with @code{section}
|
2001-04-28 13:35:04 +02:00
|
|
|
attribute with a fully initialized global definition because of the way
|
1999-09-14 12:06:06 +02:00
|
|
|
linkers work. See @code{section} attribute for more information.
|
|
|
|
|
2004-01-18 03:10:34 +01:00
|
|
|
The @code{shared} attribute is only available on Microsoft Windows@.
|
1999-09-14 12:06:06 +02:00
|
|
|
|
2003-05-06 01:12:37 +02:00
|
|
|
@item tls_model ("@var{tls_model}")
|
|
|
|
@cindex @code{tls_model} attribute
|
|
|
|
The @code{tls_model} attribute sets thread-local storage model
|
|
|
|
(@pxref{Thread-Local}) of a particular @code{__thread} variable,
|
compat.texi, [...]: Use @option around options.
* doc/compat.texi, doc/cpp.texi, doc/cppopts.texi,
doc/extend.texi, doc/install.texi, doc/invoke.texi,
doc/sourcebuild.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Use @option around options.
From-SVN: r87635
2004-09-17 10:22:53 +02:00
|
|
|
overriding @option{-ftls-model=} command line switch on a per-variable
|
2003-05-06 01:12:37 +02:00
|
|
|
basis.
|
|
|
|
The @var{tls_model} argument should be one of @code{global-dynamic},
|
|
|
|
@code{local-dynamic}, @code{initial-exec} or @code{local-exec}.
|
|
|
|
|
|
|
|
Not all targets support this attribute.
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@item transparent_union
|
|
|
|
This attribute, attached to a function parameter which is a union, means
|
|
|
|
that the corresponding argument may have the type of any union member,
|
|
|
|
but the argument is passed as if its type were that of the first union
|
|
|
|
member. For more details see @xref{Type Attributes}. You can also use
|
|
|
|
this attribute on a @code{typedef} for a union data type; then it
|
|
|
|
applies to all function parameters with that type.
|
|
|
|
|
|
|
|
@item unused
|
|
|
|
This attribute, attached to a variable, means that the variable is meant
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
to be possibly unused. GCC will not produce a warning for this
|
1996-09-24 00:41:16 +02:00
|
|
|
variable.
|
|
|
|
|
2001-12-07 19:49:16 +01:00
|
|
|
@item vector_size (@var{bytes})
|
|
|
|
This attribute specifies the vector size for the variable, measured in
|
|
|
|
bytes. For example, the declaration:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
int foo __attribute__ ((vector_size (16)));
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@noindent
|
|
|
|
causes the compiler to set the mode for @code{foo}, to be 16 bytes,
|
|
|
|
divided into @code{int} sized units. Assuming a 32-bit int (a vector of
|
|
|
|
4 units of 4 bytes), the corresponding mode of @code{foo} will be V4SI@.
|
|
|
|
|
|
|
|
This attribute is only applicable to integral and float scalars,
|
|
|
|
although arrays, pointers, and function return values are allowed in
|
|
|
|
conjunction with this construct.
|
|
|
|
|
|
|
|
Aggregates with this attribute are invalid, even if they are of the same
|
|
|
|
size as a corresponding scalar. For example, the declaration:
|
|
|
|
|
|
|
|
@smallexample
|
2001-12-08 00:00:16 +01:00
|
|
|
struct S @{ int a; @};
|
2001-12-07 19:49:16 +01:00
|
|
|
struct S __attribute__ ((vector_size (16))) foo;
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@noindent
|
|
|
|
is invalid even if the size of the structure is the same as the size of
|
|
|
|
the @code{int}.
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@item weak
|
|
|
|
The @code{weak} attribute is described in @xref{Function Attributes}.
|
2003-07-04 09:42:11 +02:00
|
|
|
|
|
|
|
@item dllimport
|
|
|
|
The @code{dllimport} attribute is described in @xref{Function Attributes}.
|
|
|
|
|
|
|
|
@item dlexport
|
|
|
|
The @code{dllexport} attribute is described in @xref{Function Attributes}.
|
|
|
|
|
2003-05-06 01:12:37 +02:00
|
|
|
@end table
|
|
|
|
|
|
|
|
@subsection M32R/D Variable Attributes
|
1997-03-24 21:53:34 +01:00
|
|
|
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
One attribute is currently defined for the M32R/D@.
|
2003-05-06 01:12:37 +02:00
|
|
|
|
|
|
|
@table @code
|
1997-03-24 21:53:34 +01:00
|
|
|
@item model (@var{model-name})
|
|
|
|
@cindex variable addressability on the M32R/D
|
|
|
|
Use this attribute on the M32R/D to set the addressability of an object.
|
|
|
|
The identifier @var{model-name} is one of @code{small}, @code{medium},
|
|
|
|
or @code{large}, representing each of the code models.
|
|
|
|
|
|
|
|
Small model objects live in the lower 16MB of memory (so that their
|
|
|
|
addresses can be loaded with the @code{ld24} instruction).
|
|
|
|
|
2001-04-28 13:35:04 +02:00
|
|
|
Medium and large model objects may live anywhere in the 32-bit address space
|
1997-03-24 21:53:34 +01:00
|
|
|
(the compiler will generate @code{seth/add3} instructions to load their
|
|
|
|
addresses).
|
2003-05-06 01:12:37 +02:00
|
|
|
@end table
|
1997-03-24 21:53:34 +01:00
|
|
|
|
2003-01-09 06:23:55 +01:00
|
|
|
@subsection i386 Variable Attributes
|
|
|
|
|
|
|
|
Two attributes are currently defined for i386 configurations:
|
|
|
|
@code{ms_struct} and @code{gcc_struct}
|
|
|
|
|
2003-05-06 01:12:37 +02:00
|
|
|
@table @code
|
2003-01-09 06:23:55 +01:00
|
|
|
@item ms_struct
|
|
|
|
@itemx gcc_struct
|
2003-05-06 01:12:37 +02:00
|
|
|
@cindex @code{ms_struct} attribute
|
|
|
|
@cindex @code{gcc_struct} attribute
|
2003-01-09 06:23:55 +01:00
|
|
|
|
|
|
|
If @code{packed} is used on a structure, or if bit-fields are used
|
|
|
|
it may be that the Microsoft ABI packs them differently
|
|
|
|
than GCC would normally pack them. Particularly when moving packed
|
|
|
|
data between functions compiled with GCC and the native Microsoft compiler
|
|
|
|
(either via function call or as data in a file), it may be necessary to access
|
|
|
|
either format.
|
|
|
|
|
2004-01-18 03:10:34 +01:00
|
|
|
Currently @option{-m[no-]ms-bitfields} is provided for the Microsoft Windows X86
|
2003-01-09 06:23:55 +01:00
|
|
|
compilers to match the native Microsoft compiler.
|
1996-09-24 00:41:16 +02:00
|
|
|
@end table
|
|
|
|
|
extend.texi: Document new xstormy16 attribute.
* doc/extend.texi: Document new xstormy16 attribute.
* config/stormy16/stormy16.c (xstormy16_splittable_below100_operand): New.
(xstormy16_splittable_below100_or_register): New.
(combine_bnp): New.
(xstormy16_reorg): New.
(TARGET_MACHINE_DEPENDENT_REORG): Define.
* config/stormy16/stormy16.md (movqi_internal): Make name public.
(movhi_internal): Likewise.
(cbhranchhi): Likewise.
(cbhranchhi_neg): Likewise.
(andhi3): Only allow splittable below100 operands.
(iorhi3): Likewise.
(peephole2): New and/zero_extend->and peephole.
(peephole2): New load/ior/save->set1 peephole.
(peephole2): New load/and/save->clr1 peephole.
(bclrx, bclrx2, bclr7, bclr15): New.
(bsetx, bsetx2, bset7, bset15): New.
* config/stormy16/stormy16.c (xstormy16_print_operand): Be more
liberal about acceptable 'B' masks.
* config/stormy16/stormy16-protos.h
(xstormy16_asm_output_aligned_common, xstormy16_below100_symbol,
xstormy16_below100_operand, xstormy16_below100_or_register,
xstormy16_onebit_set_operand, xstormy16_onebit_clr_operand): New.
(PREDICATE_CODES): Add new predicates.
* config/stormy16/stormy16.c
(xstormy16_asm_output_aligned_common, xstormy16_below100_symbol,
xstormy16_below100_operand, xstormy16_below100_or_register,
xstormy16_onebit_set_operand, xstormy16_onebit_clr_operand): New.
(xstormy16_expand_iorqi3, xstormy16_expand_andqi3): New.
(xstormy16_legitimate_address_p): Allow below100 symbols.
(xstormy16_extra_constraint_p): Add 'W' for below100 operands.
(xstormy16_expand_move): Leave below100 operands as-is.
(xstormy16_encode_section_info): Encode below100 symbols.
(xstormy16_strip_name_encoding): New.
(xstormy16_print_operand): Print 'b' as shift mask.
(xstormy16_attribute_table): Add below100 attributes.
(xstormy16_handle_below100_attribute): New.
* config/stormy16/stormy16.h (EXTRA_SECTIONS): add in_bss100.
(XSTORMY16_SECTION_FUNCTION): New.
(EXTRA_SECTION_FUNCTIONS): Define using the above.
(ASM_OUTPUT_ALIGNED_DECL_COMMON, ASM_OUTPUT_ALIGNED_DECL_LOCAL): New.
(ASM_OUTPUT_SYMBOL_REF): Handle encoded symbols.
(ASM_OUTPUT_LABELREF): Define.
* config/stormy16/stormy16.md (movqi_internal): Add below100 support.
(movhi_internal): Add below100 support.
(andhi3): Add below100 support.
(iorhi3): Add below100 support.
(iorqi3, iorqi3_internal, andqi3, andqi3_internal): New.
From-SVN: r86154
2004-08-18 00:51:28 +02:00
|
|
|
@subsection Xstormy16 Variable Attributes
|
|
|
|
|
|
|
|
One attribute is currently defined for xstormy16 configurations:
|
|
|
|
@code{below100}
|
|
|
|
|
|
|
|
@table @code
|
|
|
|
@item below100
|
|
|
|
@cindex @code{below100} attribute
|
|
|
|
|
|
|
|
If a variable has the @code{below100} attribute (@code{BELOW100} is
|
|
|
|
allowed also), GCC will place the variable in the first 0x100 bytes of
|
|
|
|
memory and use special opcodes to access it. Such variables will be
|
|
|
|
placed in either the @code{.bss_below100} section or the
|
|
|
|
@code{.data_below100} section.
|
|
|
|
|
|
|
|
@end table
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@node Type Attributes
|
|
|
|
@section Specifying Attributes of Types
|
|
|
|
@cindex attribute of types
|
|
|
|
@cindex type attributes
|
|
|
|
|
|
|
|
The keyword @code{__attribute__} allows you to specify special
|
|
|
|
attributes of @code{struct} and @code{union} types when you define such
|
|
|
|
types. This keyword is followed by an attribute specification inside
|
2002-05-30 23:28:17 +02:00
|
|
|
double parentheses. Six attributes are currently defined for types:
|
2002-01-10 19:51:24 +01:00
|
|
|
@code{aligned}, @code{packed}, @code{transparent_union}, @code{unused},
|
2002-05-30 23:28:17 +02:00
|
|
|
@code{deprecated} and @code{may_alias}. Other attributes are defined for
|
|
|
|
functions (@pxref{Function Attributes}) and for variables
|
|
|
|
(@pxref{Variable Attributes}).
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
You may also specify any one of these attributes with @samp{__}
|
|
|
|
preceding and following its keyword. This allows you to use these
|
|
|
|
attributes in header files without being concerned about a possible
|
|
|
|
macro of the same name. For example, you may use @code{__aligned__}
|
|
|
|
instead of @code{aligned}.
|
|
|
|
|
|
|
|
You may specify the @code{aligned} and @code{transparent_union}
|
|
|
|
attributes either in a @code{typedef} declaration or just past the
|
|
|
|
closing curly brace of a complete enum, struct or union type
|
|
|
|
@emph{definition} and the @code{packed} attribute only past the closing
|
|
|
|
brace of a definition.
|
|
|
|
|
1998-07-07 00:30:16 +02:00
|
|
|
You may also specify attributes between the enum, struct or union
|
|
|
|
tag and the name of the type rather than after the closing brace.
|
|
|
|
|
2001-01-27 22:29:53 +01:00
|
|
|
@xref{Attribute Syntax}, for details of the exact syntax for using
|
|
|
|
attributes.
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@table @code
|
|
|
|
@cindex @code{aligned} attribute
|
|
|
|
@item aligned (@var{alignment})
|
|
|
|
This attribute specifies a minimum alignment (in bytes) for variables
|
|
|
|
of the specified type. For example, the declarations:
|
|
|
|
|
|
|
|
@smallexample
|
1998-01-25 10:00:18 +01:00
|
|
|
struct S @{ short f[3]; @} __attribute__ ((aligned (8)));
|
|
|
|
typedef int more_aligned_int __attribute__ ((aligned (8)));
|
1996-09-24 00:41:16 +02:00
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@noindent
|
1997-11-14 02:56:51 +01:00
|
|
|
force the compiler to insure (as far as it can) that each variable whose
|
1996-09-24 00:41:16 +02:00
|
|
|
type is @code{struct S} or @code{more_aligned_int} will be allocated and
|
2002-09-16 00:48:06 +02:00
|
|
|
aligned @emph{at least} on a 8-byte boundary. On a SPARC, having all
|
1996-09-24 00:41:16 +02:00
|
|
|
variables of type @code{struct S} aligned to 8-byte boundaries allows
|
|
|
|
the compiler to use the @code{ldd} and @code{std} (doubleword load and
|
|
|
|
store) instructions when copying one variable of type @code{struct S} to
|
|
|
|
another, thus improving run-time efficiency.
|
|
|
|
|
|
|
|
Note that the alignment of any given @code{struct} or @code{union} type
|
2001-01-12 19:51:27 +01:00
|
|
|
is required by the ISO C standard to be at least a perfect multiple of
|
1996-09-24 00:41:16 +02:00
|
|
|
the lowest common multiple of the alignments of all of the members of
|
|
|
|
the @code{struct} or @code{union} in question. This means that you @emph{can}
|
|
|
|
effectively adjust the alignment of a @code{struct} or @code{union}
|
|
|
|
type by attaching an @code{aligned} attribute to any one of the members
|
|
|
|
of such a type, but the notation illustrated in the example above is a
|
|
|
|
more obvious, intuitive, and readable way to request the compiler to
|
|
|
|
adjust the alignment of an entire @code{struct} or @code{union} type.
|
|
|
|
|
|
|
|
As in the preceding example, you can explicitly specify the alignment
|
|
|
|
(in bytes) that you wish the compiler to use for a given @code{struct}
|
|
|
|
or @code{union} type. Alternatively, you can leave out the alignment factor
|
|
|
|
and just ask the compiler to align a type to the maximum
|
|
|
|
useful alignment for the target machine you are compiling for. For
|
|
|
|
example, you could write:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
struct S @{ short f[3]; @} __attribute__ ((aligned));
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
Whenever you leave out the alignment factor in an @code{aligned}
|
|
|
|
attribute specification, the compiler automatically sets the alignment
|
|
|
|
for the type to the largest alignment which is ever used for any data
|
|
|
|
type on the target machine you are compiling for. Doing this can often
|
|
|
|
make copy operations more efficient, because the compiler can use
|
|
|
|
whatever instructions copy the biggest chunks of memory when performing
|
|
|
|
copies to or from the variables which have types that you have aligned
|
|
|
|
this way.
|
|
|
|
|
|
|
|
In the example above, if the size of each @code{short} is 2 bytes, then
|
|
|
|
the size of the entire @code{struct S} type is 6 bytes. The smallest
|
|
|
|
power of two which is greater than or equal to that is 8, so the
|
|
|
|
compiler sets the alignment for the entire @code{struct S} type to 8
|
|
|
|
bytes.
|
|
|
|
|
|
|
|
Note that although you can ask the compiler to select a time-efficient
|
|
|
|
alignment for a given type and then declare only individual stand-alone
|
|
|
|
objects of that type, the compiler's ability to select a time-efficient
|
|
|
|
alignment is primarily useful only when you plan to create arrays of
|
|
|
|
variables having the relevant (efficiently aligned) type. If you
|
|
|
|
declare or use arrays of variables of an efficiently-aligned type, then
|
|
|
|
it is likely that your program will also be doing pointer arithmetic (or
|
|
|
|
subscripting, which amounts to the same thing) on pointers to the
|
|
|
|
relevant type, and the code that the compiler generates for these
|
|
|
|
pointer arithmetic operations will often be more efficient for
|
|
|
|
efficiently-aligned types than for other types.
|
|
|
|
|
|
|
|
The @code{aligned} attribute can only increase the alignment; but you
|
|
|
|
can decrease it by specifying @code{packed} as well. See below.
|
|
|
|
|
|
|
|
Note that the effectiveness of @code{aligned} attributes may be limited
|
|
|
|
by inherent limitations in your linker. On many systems, the linker is
|
|
|
|
only able to arrange for variables to be aligned up to a certain maximum
|
|
|
|
alignment. (For some linkers, the maximum supported alignment may
|
|
|
|
be very very small.) If your linker is only able to align variables
|
|
|
|
up to a maximum of 8 byte alignment, then specifying @code{aligned(16)}
|
|
|
|
in an @code{__attribute__} will still only provide you with 8 byte
|
|
|
|
alignment. See your linker documentation for further information.
|
|
|
|
|
|
|
|
@item packed
|
2003-08-01 11:34:09 +02:00
|
|
|
This attribute, attached to @code{struct} or @code{union} type
|
|
|
|
definition, specifies that each member of the structure or union is
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
placed to minimize the memory required. When attached to an @code{enum}
|
2003-08-01 11:34:09 +02:00
|
|
|
definition, it indicates that the smallest integral type should be used.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-06-13 00:40:00 +02:00
|
|
|
@opindex fshort-enums
|
1996-09-24 00:41:16 +02:00
|
|
|
Specifying this attribute for @code{struct} and @code{union} types is
|
|
|
|
equivalent to specifying the @code{packed} attribute on each of the
|
2001-06-13 00:40:00 +02:00
|
|
|
structure or union members. Specifying the @option{-fshort-enums}
|
1996-09-24 00:41:16 +02:00
|
|
|
flag on the line is equivalent to specifying the @code{packed}
|
|
|
|
attribute on all @code{enum} definitions.
|
|
|
|
|
2003-08-01 11:34:09 +02:00
|
|
|
In the following example @code{struct my_packed_struct}'s members are
|
|
|
|
packed closely together, but the internal layout of its @code{s} member
|
contrib.texi, [...]: Improve Texinfo formatting.
* doc/contrib.texi, doc/cpp.texi, doc/cppopts.texi,
doc/extend.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/sourcebuild.texi, doc/tm.texi: Improve Texinfo formatting.
From-SVN: r89725
2004-10-28 03:00:31 +02:00
|
|
|
is not packed---to do that, @code{struct my_unpacked_struct} would need to
|
2003-08-01 11:34:09 +02:00
|
|
|
be packed too.
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
struct my_unpacked_struct
|
|
|
|
@{
|
|
|
|
char c;
|
|
|
|
int i;
|
|
|
|
@};
|
|
|
|
|
|
|
|
struct my_packed_struct __attribute__ ((__packed__))
|
|
|
|
@{
|
|
|
|
char c;
|
|
|
|
int i;
|
|
|
|
struct my_unpacked_struct s;
|
|
|
|
@};
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
You may only specify this attribute on the definition of a @code{enum},
|
|
|
|
@code{struct} or @code{union}, not on a @code{typedef} which does not
|
|
|
|
also define the enumerated type, structure or union.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@item transparent_union
|
|
|
|
This attribute, attached to a @code{union} type definition, indicates
|
|
|
|
that any function parameter having that union type causes calls to that
|
|
|
|
function to be treated in a special way.
|
|
|
|
|
|
|
|
First, the argument corresponding to a transparent union type can be of
|
|
|
|
any type in the union; no cast is required. Also, if the union contains
|
|
|
|
a pointer type, the corresponding argument can be a null pointer
|
|
|
|
constant or a void pointer expression; and if the union contains a void
|
|
|
|
pointer type, the corresponding argument can be any pointer expression.
|
|
|
|
If the union member type is a pointer, qualifiers like @code{const} on
|
|
|
|
the referenced type must be respected, just as with normal pointer
|
|
|
|
conversions.
|
|
|
|
|
|
|
|
Second, the argument is passed to the function using the calling
|
2003-07-21 17:08:55 +02:00
|
|
|
conventions of the first member of the transparent union, not the calling
|
1996-09-24 00:41:16 +02:00
|
|
|
conventions of the union itself. All members of the union must have the
|
|
|
|
same machine representation; this is necessary for this argument passing
|
|
|
|
to work properly.
|
|
|
|
|
|
|
|
Transparent unions are designed for library functions that have multiple
|
|
|
|
interfaces for compatibility reasons. For example, suppose the
|
|
|
|
@code{wait} function must accept either a value of type @code{int *} to
|
|
|
|
comply with Posix, or a value of type @code{union wait *} to comply with
|
|
|
|
the 4.1BSD interface. If @code{wait}'s parameter were @code{void *},
|
|
|
|
@code{wait} would accept both kinds of arguments, but it would also
|
|
|
|
accept any other pointer type and this would make argument type checking
|
|
|
|
less useful. Instead, @code{<sys/wait.h>} might define the interface
|
|
|
|
as follows:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
typedef union
|
|
|
|
@{
|
|
|
|
int *__ip;
|
|
|
|
union wait *__up;
|
|
|
|
@} wait_status_ptr_t __attribute__ ((__transparent_union__));
|
|
|
|
|
|
|
|
pid_t wait (wait_status_ptr_t);
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
This interface allows either @code{int *} or @code{union wait *}
|
|
|
|
arguments to be passed, using the @code{int *} calling convention.
|
|
|
|
The program can call @code{wait} with arguments of either type:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
int w1 () @{ int w; return wait (&w); @}
|
|
|
|
int w2 () @{ union wait w; return wait (&w); @}
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
With this interface, @code{wait}'s implementation might look like this:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
pid_t wait (wait_status_ptr_t p)
|
|
|
|
@{
|
|
|
|
return waitpid (-1, p.__ip, 0);
|
|
|
|
@}
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1997-11-14 02:56:51 +01:00
|
|
|
|
|
|
|
@item unused
|
|
|
|
When attached to a type (including a @code{union} or a @code{struct}),
|
|
|
|
this attribute means that variables of that type are meant to appear
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
possibly unused. GCC will not produce a warning for any variables of
|
1997-11-14 02:56:51 +01:00
|
|
|
that type, even if the variable appears to do nothing. This is often
|
|
|
|
the case with lock or thread classes, which are usually defined and then
|
|
|
|
not referenced, but contain constructors and destructors that have
|
1997-12-07 01:31:01 +01:00
|
|
|
nontrivial bookkeeping functions.
|
1997-11-14 02:56:51 +01:00
|
|
|
|
2002-01-10 19:51:24 +01:00
|
|
|
@item deprecated
|
|
|
|
The @code{deprecated} attribute results in a warning if the type
|
|
|
|
is used anywhere in the source file. This is useful when identifying
|
|
|
|
types that are expected to be removed in a future version of a program.
|
|
|
|
If possible, the warning also includes the location of the declaration
|
|
|
|
of the deprecated type, to enable users to easily find further
|
|
|
|
information about why the type is deprecated, or what they should do
|
|
|
|
instead. Note that the warnings only occur for uses and then only
|
2002-01-10 21:45:54 +01:00
|
|
|
if the type is being applied to an identifier that itself is not being
|
2002-01-10 19:51:24 +01:00
|
|
|
declared as deprecated.
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
typedef int T1 __attribute__ ((deprecated));
|
|
|
|
T1 x;
|
|
|
|
typedef T1 T2;
|
|
|
|
T2 y;
|
|
|
|
typedef T1 T3 __attribute__ ((deprecated));
|
|
|
|
T3 z __attribute__ ((deprecated));
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
results in a warning on line 2 and 3 but not lines 4, 5, or 6. No
|
|
|
|
warning is issued for line 4 because T2 is not explicitly
|
|
|
|
deprecated. Line 5 has no warning because T3 is explicitly
|
|
|
|
deprecated. Similarly for line 6.
|
|
|
|
|
|
|
|
The @code{deprecated} attribute can also be used for functions and
|
|
|
|
variables (@pxref{Function Attributes}, @pxref{Variable Attributes}.)
|
|
|
|
|
2002-05-30 23:28:17 +02:00
|
|
|
@item may_alias
|
|
|
|
Accesses to objects with types with this attribute are not subjected to
|
|
|
|
type-based alias analysis, but are instead assumed to be able to alias
|
|
|
|
any other type of objects, just like the @code{char} type. See
|
|
|
|
@option{-fstrict-aliasing} for more information on aliasing issues.
|
|
|
|
|
|
|
|
Example of use:
|
|
|
|
|
2002-09-04 19:35:59 +02:00
|
|
|
@smallexample
|
2002-05-30 23:28:17 +02:00
|
|
|
typedef short __attribute__((__may_alias__)) short_a;
|
|
|
|
|
|
|
|
int
|
|
|
|
main (void)
|
|
|
|
@{
|
|
|
|
int a = 0x12345678;
|
|
|
|
short_a *b = (short_a *) &a;
|
|
|
|
|
|
|
|
b[1] = 0;
|
|
|
|
|
|
|
|
if (a == 0x12345678)
|
|
|
|
abort();
|
|
|
|
|
|
|
|
exit(0);
|
|
|
|
@}
|
2002-09-04 19:35:59 +02:00
|
|
|
@end smallexample
|
2002-05-30 23:28:17 +02:00
|
|
|
|
|
|
|
If you replaced @code{short_a} with @code{short} in the variable
|
|
|
|
declaration, the above program would abort when compiled with
|
|
|
|
@option{-fstrict-aliasing}, which is on by default at @option{-O2} or
|
|
|
|
above in recent GCC versions.
|
2003-01-09 06:23:55 +01:00
|
|
|
|
2004-11-05 01:18:51 +01:00
|
|
|
@subsection ARM Type Attributes
|
|
|
|
|
|
|
|
On those ARM targets that support @code{dllimport} (such as Symbian
|
c-tree.texi, [...]: Remove trailing whitespace.
* doc/c-tree.texi, doc/cfg.texi, doc/extend.texi, doc/gty.texi,
doc/install.texi, doc/invoke.texi, doc/md.texi, doc/passes.texi,
doc/rtl.texi, doc/tm.texi, doc/tree-ssa.texi: Remove trailing
whitespace.
From-SVN: r90100
2004-11-05 01:53:49 +01:00
|
|
|
OS), you can use the @code{notshared} attribute to indicate that the
|
2004-11-05 01:18:51 +01:00
|
|
|
virtual table and other similar data for a class should not be
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
exported from a DLL@. For example:
|
2004-11-05 01:18:51 +01:00
|
|
|
|
|
|
|
@smallexample
|
|
|
|
class __declspec(notshared) C @{
|
|
|
|
public:
|
c-tree.texi, [...]: Remove trailing whitespace.
* doc/c-tree.texi, doc/cfg.texi, doc/extend.texi, doc/gty.texi,
doc/install.texi, doc/invoke.texi, doc/md.texi, doc/passes.texi,
doc/rtl.texi, doc/tm.texi, doc/tree-ssa.texi: Remove trailing
whitespace.
From-SVN: r90100
2004-11-05 01:53:49 +01:00
|
|
|
__declspec(dllimport) C();
|
2004-11-05 01:18:51 +01:00
|
|
|
virtual void f();
|
|
|
|
@}
|
|
|
|
|
|
|
|
__declspec(dllexport)
|
|
|
|
C::C() @{@}
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
In this code, @code{C::C} is exported from the current DLL, but the
|
|
|
|
virtual table for @code{C} is not exported. (You can use
|
|
|
|
@code{__attribute__} instead of @code{__declspec} if you prefer, but
|
|
|
|
most Symbian OS code uses @code{__declspec}.)
|
|
|
|
|
2003-01-09 06:23:55 +01:00
|
|
|
@subsection i386 Type Attributes
|
|
|
|
|
|
|
|
Two attributes are currently defined for i386 configurations:
|
|
|
|
@code{ms_struct} and @code{gcc_struct}
|
|
|
|
|
|
|
|
@item ms_struct
|
|
|
|
@itemx gcc_struct
|
|
|
|
@cindex @code{ms_struct}
|
|
|
|
@cindex @code{gcc_struct}
|
|
|
|
|
|
|
|
If @code{packed} is used on a structure, or if bit-fields are used
|
|
|
|
it may be that the Microsoft ABI packs them differently
|
|
|
|
than GCC would normally pack them. Particularly when moving packed
|
|
|
|
data between functions compiled with GCC and the native Microsoft compiler
|
|
|
|
(either via function call or as data in a file), it may be necessary to access
|
|
|
|
either format.
|
|
|
|
|
2004-01-18 03:10:34 +01:00
|
|
|
Currently @option{-m[no-]ms-bitfields} is provided for the Microsoft Windows X86
|
2003-01-09 06:23:55 +01:00
|
|
|
compilers to match the native Microsoft compiler.
|
1996-09-24 00:41:16 +02:00
|
|
|
@end table
|
|
|
|
|
|
|
|
To specify multiple attributes, separate them by commas within the
|
|
|
|
double parentheses: for example, @samp{__attribute__ ((aligned (16),
|
|
|
|
packed))}.
|
|
|
|
|
|
|
|
@node Inline
|
|
|
|
@section An Inline Function is As Fast As a Macro
|
|
|
|
@cindex inline functions
|
|
|
|
@cindex integrating function code
|
|
|
|
@cindex open coding
|
|
|
|
@cindex macros, inline alternative
|
|
|
|
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
By declaring a function @code{inline}, you can direct GCC to
|
1996-09-24 00:41:16 +02:00
|
|
|
integrate that function's code into the code for its callers. This
|
|
|
|
makes execution faster by eliminating the function-call overhead; in
|
|
|
|
addition, if any of the actual argument values are constant, their known
|
|
|
|
values may permit simplifications at compile time so that not all of the
|
|
|
|
inline function's code needs to be included. The effect on code size is
|
|
|
|
less predictable; object code may be larger or smaller with function
|
|
|
|
inlining, depending on the particular case. Inlining of functions is an
|
|
|
|
optimization and it really ``works'' only in optimizing compilation. If
|
2001-06-13 00:40:00 +02:00
|
|
|
you don't use @option{-O}, no function is really inline.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-05-21 01:21:59 +02:00
|
|
|
Inline functions are included in the ISO C99 standard, but there are
|
|
|
|
currently substantial differences between what GCC implements and what
|
|
|
|
the ISO C99 standard requires.
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
To declare a function inline, use the @code{inline} keyword in its
|
|
|
|
declaration, like this:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
inline int
|
|
|
|
inc (int *a)
|
|
|
|
@{
|
|
|
|
(*a)++;
|
|
|
|
@}
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-01-12 19:51:27 +01:00
|
|
|
(If you are writing a header file to be included in ISO C programs, write
|
1996-09-24 00:41:16 +02:00
|
|
|
@code{__inline__} instead of @code{inline}. @xref{Alternate Keywords}.)
|
|
|
|
You can also make all ``simple enough'' functions inline with the option
|
2001-06-13 00:40:00 +02:00
|
|
|
@option{-finline-functions}.
|
1999-02-08 23:02:13 +01:00
|
|
|
|
2001-06-13 00:40:00 +02:00
|
|
|
@opindex Winline
|
1999-02-08 23:02:13 +01:00
|
|
|
Note that certain usages in a function definition can make it unsuitable
|
|
|
|
for inline substitution. Among these usages are: use of varargs, use of
|
|
|
|
alloca, use of variable sized data types (@pxref{Variable Length}),
|
|
|
|
use of computed goto (@pxref{Labels as Values}), use of nonlocal goto,
|
2001-06-13 00:40:00 +02:00
|
|
|
and nested functions (@pxref{Nested Functions}). Using @option{-Winline}
|
1999-02-08 23:02:13 +01:00
|
|
|
will warn when a function marked @code{inline} could not be substituted,
|
|
|
|
and will give the reason for the failure.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-06-21 17:25:56 +02:00
|
|
|
Note that in C and Objective-C, unlike C++, the @code{inline} keyword
|
1996-09-24 00:41:16 +02:00
|
|
|
does not affect the linkage of the function.
|
|
|
|
|
|
|
|
@cindex automatic @code{inline} for C++ member fns
|
|
|
|
@cindex @code{inline} automatic for C++ member fns
|
|
|
|
@cindex member fns, automatically @code{inline}
|
|
|
|
@cindex C++ member fns, automatically @code{inline}
|
2001-06-13 00:40:00 +02:00
|
|
|
@opindex fno-default-inline
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
GCC automatically inlines member functions defined within the class
|
1996-09-24 00:41:16 +02:00
|
|
|
body of C++ programs even if they are not explicitly declared
|
2001-06-13 00:40:00 +02:00
|
|
|
@code{inline}. (You can override this with @option{-fno-default-inline};
|
1996-09-24 00:41:16 +02:00
|
|
|
@pxref{C++ Dialect Options,,Options Controlling C++ Dialect}.)
|
|
|
|
|
|
|
|
@cindex inline functions, omission of
|
2001-06-13 00:40:00 +02:00
|
|
|
@opindex fkeep-inline-functions
|
1996-09-24 00:41:16 +02:00
|
|
|
When a function is both inline and @code{static}, if all calls to the
|
|
|
|
function are integrated into the caller, and the function's address is
|
|
|
|
never used, then the function's own assembler code is never referenced.
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
In this case, GCC does not actually output assembler code for the
|
2001-06-13 00:40:00 +02:00
|
|
|
function, unless you specify the option @option{-fkeep-inline-functions}.
|
1996-09-24 00:41:16 +02:00
|
|
|
Some calls cannot be integrated for various reasons (in particular,
|
|
|
|
calls that precede the function's definition cannot be integrated, and
|
|
|
|
neither can recursive calls within the definition). If there is a
|
|
|
|
nonintegrated call, then the function is compiled to assembler code as
|
|
|
|
usual. The function must also be compiled as usual if the program
|
|
|
|
refers to its address, because that can't be inlined.
|
|
|
|
|
|
|
|
@cindex non-static inline function
|
|
|
|
When an inline function is not @code{static}, then the compiler must assume
|
|
|
|
that there may be calls from other source files; since a global symbol can
|
|
|
|
be defined only once in any program, the function must not be defined in
|
|
|
|
the other source files, so the calls therein cannot be integrated.
|
|
|
|
Therefore, a non-@code{static} inline function is always compiled on its
|
|
|
|
own in the usual fashion.
|
|
|
|
|
|
|
|
If you specify both @code{inline} and @code{extern} in the function
|
|
|
|
definition, then the definition is used only for inlining. In no case
|
|
|
|
is the function compiled on its own, not even if you refer to its
|
|
|
|
address explicitly. Such an address becomes an external reference, as
|
|
|
|
if you had only declared the function, and had not defined it.
|
|
|
|
|
|
|
|
This combination of @code{inline} and @code{extern} has almost the
|
|
|
|
effect of a macro. The way to use it is to put a function definition in
|
|
|
|
a header file with these keywords, and put another copy of the
|
|
|
|
definition (lacking @code{inline} and @code{extern}) in a library file.
|
|
|
|
The definition in the header file will cause most calls to the function
|
|
|
|
to be inlined. If any uses of the function remain, they will refer to
|
|
|
|
the single copy in the library.
|
|
|
|
|
2003-07-21 17:08:55 +02:00
|
|
|
Since GCC eventually will implement ISO C99 semantics for
|
|
|
|
inline functions, it is best to use @code{static inline} only
|
2003-10-19 05:22:01 +02:00
|
|
|
to guarantee compatibility. (The
|
2001-05-21 01:21:59 +02:00
|
|
|
existing semantics will remain available when @option{-std=gnu89} is
|
|
|
|
specified, but eventually the default will be @option{-std=gnu99} and
|
|
|
|
that will implement the C99 semantics, though it does not do so yet.)
|
|
|
|
|
2002-02-22 01:09:04 +01:00
|
|
|
GCC does not inline any functions when not optimizing unless you specify
|
|
|
|
the @samp{always_inline} attribute for the function, like this:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2002-02-22 01:09:04 +01:00
|
|
|
/* Prototype. */
|
|
|
|
inline void foo (const char) __attribute__((always_inline));
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@node Extended Asm
|
|
|
|
@section Assembler Instructions with C Expression Operands
|
|
|
|
@cindex extended @code{asm}
|
|
|
|
@cindex @code{asm} expressions
|
|
|
|
@cindex assembler instructions
|
|
|
|
@cindex registers
|
|
|
|
|
1998-01-14 21:57:58 +01:00
|
|
|
In an assembler instruction using @code{asm}, you can specify the
|
|
|
|
operands of the instruction using C expressions. This means you need not
|
|
|
|
guess which registers or memory locations will contain the data you want
|
1996-09-24 00:41:16 +02:00
|
|
|
to use.
|
|
|
|
|
1998-01-14 21:57:58 +01:00
|
|
|
You must specify an assembler instruction template much like what
|
|
|
|
appears in a machine description, plus an operand constraint string for
|
|
|
|
each operand.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
For example, here is how to use the 68881's @code{fsinx} instruction:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
asm ("fsinx %1,%0" : "=f" (result) : "f" (angle));
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
Here @code{angle} is the C expression for the input operand while
|
|
|
|
@code{result} is that of the output operand. Each has @samp{"f"} as its
|
1998-01-14 21:57:58 +01:00
|
|
|
operand constraint, saying that a floating point register is required.
|
|
|
|
The @samp{=} in @samp{=f} indicates that the operand is an output; all
|
|
|
|
output operands' constraints must use @samp{=}. The constraints use the
|
|
|
|
same language used in the machine description (@pxref{Constraints}).
|
|
|
|
|
|
|
|
Each operand is described by an operand-constraint string followed by
|
|
|
|
the C expression in parentheses. A colon separates the assembler
|
|
|
|
template from the first output operand and another separates the last
|
|
|
|
output operand from the first input, if any. Commas separate the
|
2001-10-11 09:07:30 +02:00
|
|
|
operands within each group. The total number of operands is currently
|
|
|
|
limited to 30; this limitation may be lifted in some future version of
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
GCC@.
|
1998-01-14 21:57:58 +01:00
|
|
|
|
|
|
|
If there are no output operands but there are input operands, you must
|
|
|
|
place two consecutive colons surrounding the place where the output
|
1996-09-24 00:41:16 +02:00
|
|
|
operands would go.
|
|
|
|
|
2001-10-11 09:07:30 +02:00
|
|
|
As of GCC version 3.1, it is also possible to specify input and output
|
|
|
|
operands using symbolic names which can be referenced within the
|
|
|
|
assembler code. These names are specified inside square brackets
|
|
|
|
preceding the constraint string, and can be referenced inside the
|
|
|
|
assembler code using @code{%[@var{name}]} instead of a percentage sign
|
|
|
|
followed by the operand number. Using named operands the above example
|
|
|
|
could look like:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2001-10-11 09:07:30 +02:00
|
|
|
asm ("fsinx %[angle],%[output]"
|
|
|
|
: [output] "=f" (result)
|
|
|
|
: [angle] "f" (angle));
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2001-10-11 09:07:30 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
Note that the symbolic operand names have no relation whatsoever to
|
|
|
|
other C identifiers. You may use any name you like, even those of
|
2003-07-21 17:08:55 +02:00
|
|
|
existing C symbols, but you must ensure that no two operands within the same
|
2001-10-11 09:07:30 +02:00
|
|
|
assembler construct use the same symbolic name.
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
Output operand expressions must be lvalues; the compiler can check this.
|
1998-01-14 21:57:58 +01:00
|
|
|
The input operands need not be lvalues. The compiler cannot check
|
|
|
|
whether the operands have data types that are reasonable for the
|
|
|
|
instruction being executed. It does not parse the assembler instruction
|
|
|
|
template and does not know what it means or even whether it is valid
|
|
|
|
assembler input. The extended @code{asm} feature is most often used for
|
|
|
|
machine instructions the compiler itself does not know exist. If
|
|
|
|
the output expression cannot be directly addressed (for example, it is a
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
bit-field), your constraint must allow a register. In that case, GCC
|
1998-01-14 21:57:58 +01:00
|
|
|
will use the register as the output of the @code{asm}, and then store
|
|
|
|
that register into the output.
|
|
|
|
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
The ordinary output operands must be write-only; GCC will assume that
|
1998-01-14 21:57:58 +01:00
|
|
|
the values in these operands before the instruction are dead and need
|
|
|
|
not be generated. Extended asm supports input-output or read-write
|
|
|
|
operands. Use the constraint character @samp{+} to indicate such an
|
2003-12-18 22:27:03 +01:00
|
|
|
operand and list it with the output operands. You should only use
|
|
|
|
read-write operands when the constraints for the operand (or the
|
|
|
|
operand in which only some of the bits are to be changed) allow a
|
|
|
|
register.
|
|
|
|
|
|
|
|
You may, as an alternative, logically split its function into two
|
|
|
|
separate operands, one input operand and one write-only output
|
|
|
|
operand. The connection between them is expressed by constraints
|
|
|
|
which say they need to be in the same location when the instruction
|
|
|
|
executes. You can use the same C expression for both operands, or
|
|
|
|
different expressions. For example, here we write the (fictitious)
|
|
|
|
@samp{combine} instruction with @code{bar} as its read-only source
|
|
|
|
operand and @code{foo} as its read-write destination:
|
1996-09-24 00:41:16 +02:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
asm ("combine %2,%0" : "=r" (foo) : "0" (foo), "g" (bar));
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
1998-01-14 21:57:58 +01:00
|
|
|
The constraint @samp{"0"} for operand 1 says that it must occupy the
|
2001-10-11 09:07:30 +02:00
|
|
|
same location as operand 0. A number in constraint is allowed only in
|
|
|
|
an input operand and it must refer to an output operand.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-10-11 09:07:30 +02:00
|
|
|
Only a number in the constraint can guarantee that one operand will be in
|
1998-01-14 21:57:58 +01:00
|
|
|
the same place as another. The mere fact that @code{foo} is the value
|
|
|
|
of both operands is not enough to guarantee that they will be in the
|
|
|
|
same place in the generated assembler code. The following would not
|
|
|
|
work reliably:
|
1996-09-24 00:41:16 +02:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
asm ("combine %2,%0" : "=r" (foo) : "r" (foo), "g" (bar));
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
Various optimizations or reloading could cause operands 0 and 1 to be in
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
different registers; GCC knows no reason not to do so. For example, the
|
1996-09-24 00:41:16 +02:00
|
|
|
compiler might find a copy of the value of @code{foo} in one register and
|
|
|
|
use it for operand 1, but generate the output operand 0 in a different
|
|
|
|
register (copying it afterward to @code{foo}'s own address). Of course,
|
|
|
|
since the register for operand 1 is not even mentioned in the assembler
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
code, the result will not work, but GCC can't tell that.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-10-11 09:07:30 +02:00
|
|
|
As of GCC version 3.1, one may write @code{[@var{name}]} instead of
|
|
|
|
the operand number for a matching constraint. For example:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2001-10-11 09:07:30 +02:00
|
|
|
asm ("cmoveq %1,%2,%[result]"
|
|
|
|
: [result] "=r"(result)
|
|
|
|
: "r" (test), "r"(new), "[result]"(old));
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2001-10-11 09:07:30 +02:00
|
|
|
|
2004-09-29 03:42:09 +02:00
|
|
|
Sometimes you need to make an @code{asm} operand be a specific register,
|
|
|
|
but there's no matching constraint letter for that register @emph{by
|
|
|
|
itself}. To force the operand into that register, use a local variable
|
|
|
|
for the operand and specify the register in the variable declaration.
|
|
|
|
@xref{Explicit Reg Vars}. Then for the @code{asm} operand, use any
|
|
|
|
register constraint letter that matches the register:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
register int *p1 asm ("r0") = @dots{};
|
|
|
|
register int *p2 asm ("r1") = @dots{};
|
|
|
|
register int *result asm ("r0");
|
|
|
|
asm ("sysint" : "=r" (result) : "0" (p1), "r" (p2));
|
|
|
|
@end smallexample
|
|
|
|
|
2004-10-20 01:17:06 +02:00
|
|
|
@anchor{Example of asm with clobbered asm reg}
|
|
|
|
In the above example, beware that a register that is call-clobbered by
|
|
|
|
the target ABI will be overwritten by any function call in the
|
|
|
|
assignment, including library calls for arithmetic operators.
|
|
|
|
Assuming it is a call-clobbered register, this may happen to @code{r0}
|
|
|
|
above by the assignment to @code{p2}. If you have to use such a
|
|
|
|
register, use temporary variables for expressions between the register
|
|
|
|
assignment and use:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
int t1 = @dots{};
|
|
|
|
register int *p1 asm ("r0") = @dots{};
|
|
|
|
register int *p2 asm ("r1") = t1;
|
|
|
|
register int *result asm ("r0");
|
|
|
|
asm ("sysint" : "=r" (result) : "0" (p1), "r" (p2));
|
|
|
|
@end smallexample
|
|
|
|
|
1998-01-14 21:57:58 +01:00
|
|
|
Some instructions clobber specific hard registers. To describe this,
|
|
|
|
write a third colon after the input operands, followed by the names of
|
|
|
|
the clobbered hard registers (given as strings). Here is a realistic
|
|
|
|
example for the VAX:
|
1996-09-24 00:41:16 +02:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
asm volatile ("movc3 %0,%1,%2"
|
|
|
|
: /* no outputs */
|
|
|
|
: "g" (from), "g" (to), "g" (count)
|
|
|
|
: "r0", "r1", "r2", "r3", "r4", "r5");
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
1999-09-07 07:49:18 +02:00
|
|
|
You may not write a clobber description in a way that overlaps with an
|
|
|
|
input or output operand. For example, you may not have an operand
|
|
|
|
describing a register class with one member if you mention that register
|
2002-09-23 14:17:53 +02:00
|
|
|
in the clobber list. Variables declared to live in specific registers
|
|
|
|
(@pxref{Explicit Reg Vars}), and used as asm input or output operands must
|
|
|
|
have no part mentioned in the clobber description.
|
|
|
|
There is no way for you to specify that an input
|
1999-09-07 07:49:18 +02:00
|
|
|
operand is modified without also specifying it as an output
|
|
|
|
operand. Note that if all the output operands you specify are for this
|
|
|
|
purpose (and hence unused), you will then also need to specify
|
|
|
|
@code{volatile} for the @code{asm} construct, as described below, to
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
prevent GCC from deleting the @code{asm} statement as unused.
|
1998-11-04 23:15:35 +01:00
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
If you refer to a particular hardware register from the assembler code,
|
1998-01-14 21:57:58 +01:00
|
|
|
you will probably have to list the register after the third colon to
|
|
|
|
tell the compiler the register's value is modified. In some assemblers,
|
|
|
|
the register names begin with @samp{%}; to produce one @samp{%} in the
|
|
|
|
assembler code, you must write @samp{%%} in the input.
|
|
|
|
|
|
|
|
If your assembler instruction can alter the condition code register, add
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
@samp{cc} to the list of clobbered registers. GCC on some machines
|
1998-01-14 21:57:58 +01:00
|
|
|
represents the condition codes as a specific hardware register;
|
|
|
|
@samp{cc} serves to name this register. On other machines, the
|
|
|
|
condition code is handled differently, and specifying @samp{cc} has no
|
|
|
|
effect. But it is valid no matter what the machine.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2004-01-21 18:26:08 +01:00
|
|
|
If your assembler instructions access memory in an unpredictable
|
1998-01-14 21:57:58 +01:00
|
|
|
fashion, add @samp{memory} to the list of clobbered registers. This
|
2004-01-21 18:26:08 +01:00
|
|
|
will cause GCC to not keep memory values cached in registers across the
|
|
|
|
assembler instruction and not optimize stores or loads to that memory.
|
|
|
|
You will also want to add the @code{volatile} keyword if the memory
|
|
|
|
affected is not listed in the inputs or outputs of the @code{asm}, as
|
|
|
|
the @samp{memory} clobber does not count as a side-effect of the
|
|
|
|
@code{asm}. If you know how large the accessed memory is, you can add
|
|
|
|
it as input or output but if this is not known, you should add
|
|
|
|
@samp{memory}. As an example, if you access ten bytes of a string, you
|
|
|
|
can use a memory input like:
|
|
|
|
|
2004-09-17 15:57:03 +02:00
|
|
|
@smallexample
|
2004-01-21 18:26:08 +01:00
|
|
|
@{"m"( (@{ struct @{ char x[10]; @} *p = (void *)ptr ; *p; @}) )@}.
|
2004-09-17 15:57:03 +02:00
|
|
|
@end smallexample
|
2004-01-21 18:26:08 +01:00
|
|
|
|
|
|
|
Note that in the following example the memory input is necessary,
|
|
|
|
otherwise GCC might optimize the store to @code{x} away:
|
2004-09-17 15:57:03 +02:00
|
|
|
@smallexample
|
2004-01-21 18:26:08 +01:00
|
|
|
int foo ()
|
|
|
|
@{
|
|
|
|
int x = 42;
|
|
|
|
int *y = &x;
|
|
|
|
int result;
|
|
|
|
asm ("magic stuff accessing an 'int' pointed to by '%1'"
|
|
|
|
"=&d" (r) : "a" (y), "m" (*y));
|
c-tree.texi, [...]: Remove trailing whitespace.
* doc/c-tree.texi, doc/cfg.texi, doc/extend.texi, doc/gty.texi,
doc/install.texi, doc/invoke.texi, doc/md.texi, doc/passes.texi,
doc/rtl.texi, doc/tm.texi, doc/tree-ssa.texi: Remove trailing
whitespace.
From-SVN: r90100
2004-11-05 01:53:49 +01:00
|
|
|
return result;
|
2004-01-21 18:26:08 +01:00
|
|
|
@}
|
2004-09-17 15:57:03 +02:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
1998-01-14 21:57:58 +01:00
|
|
|
You can put multiple assembler instructions together in a single
|
2001-02-06 00:57:14 +01:00
|
|
|
@code{asm} template, separated by the characters normally used in assembly
|
|
|
|
code for the system. A combination that works in most places is a newline
|
|
|
|
to break the line, plus a tab character to move to the instruction field
|
|
|
|
(written as @samp{\n\t}). Sometimes semicolons can be used, if the
|
|
|
|
assembler allows semicolons as a line-breaking character. Note that some
|
|
|
|
assembler dialects use semicolons to start a comment.
|
|
|
|
The input operands are guaranteed not to use any of the clobbered
|
1998-01-14 21:57:58 +01:00
|
|
|
registers, and neither will the output operands' addresses, so you can
|
|
|
|
read and write the clobbered registers as many times as you like. Here
|
|
|
|
is an example of multiple instructions in a template; it assumes the
|
|
|
|
subroutine @code{_foo} accepts arguments in registers 9 and 10:
|
1996-09-24 00:41:16 +02:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2001-02-06 00:57:14 +01:00
|
|
|
asm ("movl %0,r9\n\tmovl %1,r10\n\tcall _foo"
|
1996-09-24 00:41:16 +02:00
|
|
|
: /* no outputs */
|
|
|
|
: "g" (from), "g" (to)
|
|
|
|
: "r9", "r10");
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
Unless an output operand has the @samp{&} constraint modifier, GCC
|
1998-01-14 21:57:58 +01:00
|
|
|
may allocate it in the same register as an unrelated input operand, on
|
|
|
|
the assumption the inputs are consumed before the outputs are produced.
|
1996-09-24 00:41:16 +02:00
|
|
|
This assumption may be false if the assembler code actually consists of
|
|
|
|
more than one instruction. In such a case, use @samp{&} for each output
|
1998-01-14 21:57:58 +01:00
|
|
|
operand that may not overlap an input. @xref{Modifiers}.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
1998-01-14 21:57:58 +01:00
|
|
|
If you want to test the condition code produced by an assembler
|
|
|
|
instruction, you must include a branch and a label in the @code{asm}
|
|
|
|
construct, as follows:
|
1996-09-24 00:41:16 +02:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2001-02-06 00:57:14 +01:00
|
|
|
asm ("clr %0\n\tfrob %1\n\tbeq 0f\n\tmov #1,%0\n0:"
|
1996-09-24 00:41:16 +02:00
|
|
|
: "g" (result)
|
|
|
|
: "g" (input));
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
This assumes your assembler supports local labels, as the GNU assembler
|
|
|
|
and most Unix assemblers do.
|
|
|
|
|
|
|
|
Speaking of labels, jumps from one @code{asm} to another are not
|
1998-01-14 21:57:58 +01:00
|
|
|
supported. The compiler's optimizers do not know about these jumps, and
|
|
|
|
therefore they cannot take account of them when deciding how to
|
1996-09-24 00:41:16 +02:00
|
|
|
optimize.
|
|
|
|
|
|
|
|
@cindex macros containing @code{asm}
|
|
|
|
Usually the most convenient way to use these @code{asm} instructions is to
|
|
|
|
encapsulate them in macros that look like functions. For example,
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
#define sin(x) \
|
|
|
|
(@{ double __value, __arg = (x); \
|
|
|
|
asm ("fsinx %1,%0": "=f" (__value): "f" (__arg)); \
|
|
|
|
__value; @})
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
Here the variable @code{__arg} is used to make sure that the instruction
|
|
|
|
operates on a proper @code{double} value, and to accept only those
|
|
|
|
arguments @code{x} which can convert automatically to a @code{double}.
|
|
|
|
|
1998-01-14 21:57:58 +01:00
|
|
|
Another way to make sure the instruction operates on the correct data
|
|
|
|
type is to use a cast in the @code{asm}. This is different from using a
|
1996-09-24 00:41:16 +02:00
|
|
|
variable @code{__arg} in that it converts more different types. For
|
|
|
|
example, if the desired type were @code{int}, casting the argument to
|
|
|
|
@code{int} would accept a pointer with no complaint, while assigning the
|
|
|
|
argument to an @code{int} variable named @code{__arg} would warn about
|
|
|
|
using a pointer unless the caller explicitly casts it.
|
|
|
|
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
If an @code{asm} has output operands, GCC assumes for optimization
|
1998-01-14 21:57:58 +01:00
|
|
|
purposes the instruction has no side effects except to change the output
|
|
|
|
operands. This does not mean instructions with a side effect cannot be
|
|
|
|
used, but you must be careful, because the compiler may eliminate them
|
|
|
|
if the output operands aren't used, or move them out of loops, or
|
|
|
|
replace two with one if they constitute a common subexpression. Also,
|
|
|
|
if your instruction does have a side effect on a variable that otherwise
|
|
|
|
appears not to change, the old value of the variable may be reused later
|
|
|
|
if it happens to be found in a register.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2004-10-13 21:14:44 +02:00
|
|
|
You can prevent an @code{asm} instruction from being deleted
|
|
|
|
by writing the keyword @code{volatile} after
|
1996-09-24 00:41:16 +02:00
|
|
|
the @code{asm}. For example:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2001-05-31 06:27:52 +02:00
|
|
|
#define get_and_set_priority(new) \
|
|
|
|
(@{ int __old; \
|
|
|
|
asm volatile ("get_and_set_priority %0, %1" \
|
|
|
|
: "=g" (__old) : "g" (new)); \
|
1998-01-14 21:57:58 +01:00
|
|
|
__old; @})
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
2001-05-01 02:39:59 +02:00
|
|
|
The @code{volatile} keyword indicates that the instruction has
|
|
|
|
important side-effects. GCC will not delete a volatile @code{asm} if
|
|
|
|
it is reachable. (The instruction can still be deleted if GCC can
|
|
|
|
prove that control-flow will never reach the location of the
|
c-tree.texi, [...]: Remove trailing whitespace.
* doc/c-tree.texi, doc/cfg.texi, doc/extend.texi, doc/gty.texi,
doc/install.texi, doc/invoke.texi, doc/md.texi, doc/passes.texi,
doc/rtl.texi, doc/tm.texi, doc/tree-ssa.texi: Remove trailing
whitespace.
From-SVN: r90100
2004-11-05 01:53:49 +01:00
|
|
|
instruction.) Note that even a volatile @code{asm} instruction
|
2004-10-13 21:14:44 +02:00
|
|
|
can be moved relative to other code, including across jump
|
c-tree.texi, [...]: Remove trailing whitespace.
* doc/c-tree.texi, doc/cfg.texi, doc/extend.texi, doc/gty.texi,
doc/install.texi, doc/invoke.texi, doc/md.texi, doc/passes.texi,
doc/rtl.texi, doc/tm.texi, doc/tree-ssa.texi: Remove trailing
whitespace.
From-SVN: r90100
2004-11-05 01:53:49 +01:00
|
|
|
instructions. For example, on many targets there is a system
|
|
|
|
register which can be set to control the rounding mode of
|
2004-10-13 21:14:44 +02:00
|
|
|
floating point operations. You might try
|
|
|
|
setting it with a volatile @code{asm}, like this PowerPC example:
|
2001-05-01 02:39:59 +02:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2004-10-13 21:14:44 +02:00
|
|
|
asm volatile("mtfsf 255,%0" : : "f" (fpenv));
|
|
|
|
sum = x + y;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2001-05-01 02:39:59 +02:00
|
|
|
|
c-tree.texi, [...]: Remove trailing whitespace.
* c-tree.texi, contrib.texi, cpp.texi, extend.texi, gcc.texi,
gcov.texi, install.texi, md.texi, objc.texi, rtl.texi, tm.texi:
Remove trailing whitespace.
From-SVN: r42678
2001-05-28 22:57:50 +02:00
|
|
|
@noindent
|
2004-10-13 21:14:44 +02:00
|
|
|
This will not work reliably, as the compiler may move the addition back
|
|
|
|
before the volatile @code{asm}. To make it work you need to add an
|
|
|
|
artificial dependency to the @code{asm} referencing a variable in the code
|
|
|
|
you don't want moved, for example:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
asm volatile ("mtfsf 255,%1" : "=X"(sum): "f"(fpenv));
|
|
|
|
sum = x + y;
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
Similarly, you can't expect a
|
|
|
|
sequence of volatile @code{asm} instructions to remain perfectly
|
|
|
|
consecutive. If you want consecutive output, use a single @code{asm}.
|
|
|
|
Also, GCC will perform some optimizations across a volatile @code{asm}
|
|
|
|
instruction; GCC does not ``forget everything'' when it encounters
|
|
|
|
a volatile @code{asm} instruction the way some other compilers do.
|
|
|
|
|
|
|
|
An @code{asm} instruction without any output operands will be treated
|
|
|
|
identically to a volatile @code{asm} instruction.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
It is a natural idea to look for a way to give access to the condition
|
|
|
|
code left by the assembler instruction. However, when we attempted to
|
|
|
|
implement this, we found no way to make it work reliably. The problem
|
|
|
|
is that output operands might need reloading, which would result in
|
|
|
|
additional following ``store'' instructions. On most machines, these
|
|
|
|
instructions would alter the condition code before there was time to
|
|
|
|
test it. This problem doesn't arise for ordinary ``test'' and
|
|
|
|
``compare'' instructions because they don't have any output operands.
|
|
|
|
|
2000-05-05 18:26:12 +02:00
|
|
|
For reasons similar to those described above, it is not possible to give
|
|
|
|
an assembler instruction access to the condition code left by previous
|
|
|
|
instructions.
|
|
|
|
|
2001-01-12 19:51:27 +01:00
|
|
|
If you are writing a header file that should be includable in ISO C
|
1996-09-24 00:41:16 +02:00
|
|
|
programs, write @code{__asm__} instead of @code{asm}. @xref{Alternate
|
|
|
|
Keywords}.
|
|
|
|
|
2003-10-04 12:18:33 +02:00
|
|
|
@subsection Size of an @code{asm}
|
|
|
|
|
|
|
|
Some targets require that GCC track the size of each instruction used in
|
|
|
|
order to generate correct code. Because the final length of an
|
|
|
|
@code{asm} is only known by the assembler, GCC must make an estimate as
|
|
|
|
to how big it will be. The estimate is formed by counting the number of
|
|
|
|
statements in the pattern of the @code{asm} and multiplying that by the
|
|
|
|
length of the longest instruction on that processor. Statements in the
|
|
|
|
@code{asm} are identified by newline characters and whatever statement
|
|
|
|
separator characters are supported by the assembler; on most processors
|
|
|
|
this is the `@code{;}' character.
|
|
|
|
|
|
|
|
Normally, GCC's estimate is perfectly adequate to ensure that correct
|
|
|
|
code is generated, but it is possible to confuse the compiler if you use
|
|
|
|
pseudo instructions or assembler macros that expand into multiple real
|
|
|
|
instructions or if you use assembler directives that expand to more
|
|
|
|
space in the object file than would be needed for a single instruction.
|
|
|
|
If this happens then the assembler will produce a diagnostic saying that
|
|
|
|
a label is unreachable.
|
|
|
|
|
1999-04-10 07:19:58 +02:00
|
|
|
@subsection i386 floating point asm operands
|
|
|
|
|
|
|
|
There are several rules on the usage of stack-like regs in
|
|
|
|
asm_operands insns. These rules apply only to the operands that are
|
|
|
|
stack-like regs:
|
|
|
|
|
|
|
|
@enumerate
|
|
|
|
@item
|
|
|
|
Given a set of input regs that die in an asm_operands, it is
|
|
|
|
necessary to know which are implicitly popped by the asm, and
|
|
|
|
which must be explicitly popped by gcc.
|
|
|
|
|
|
|
|
An input reg that is implicitly popped by the asm must be
|
|
|
|
explicitly clobbered, unless it is constrained to match an
|
|
|
|
output operand.
|
|
|
|
|
|
|
|
@item
|
|
|
|
For any input reg that is implicitly popped by an asm, it is
|
|
|
|
necessary to know how to adjust the stack to compensate for the pop.
|
|
|
|
If any non-popped input is closer to the top of the reg-stack than
|
|
|
|
the implicitly popped reg, it would not be possible to know what the
|
2001-06-13 00:40:00 +02:00
|
|
|
stack looked like---it's not clear how the rest of the stack ``slides
|
1999-04-10 07:19:58 +02:00
|
|
|
up''.
|
|
|
|
|
|
|
|
All implicitly popped input regs must be closer to the top of
|
|
|
|
the reg-stack than any input that is not implicitly popped.
|
|
|
|
|
|
|
|
It is possible that if an input dies in an insn, reload might
|
|
|
|
use the input reg for an output reload. Consider this example:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1999-04-10 07:19:58 +02:00
|
|
|
asm ("foo" : "=t" (a) : "f" (b));
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1999-04-10 07:19:58 +02:00
|
|
|
|
|
|
|
This asm says that input B is not popped by the asm, and that
|
c-tree.texi, [...]: Fix spelling and typos.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/install.texi, doc/invoke.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi: Fix spelling and typos.
Consistently use "built-in" and "bit-field". Minor logical markup
improvements.
* doc/gcc.1: Regenerate.
From-SVN: r43383
2001-06-15 00:51:18 +02:00
|
|
|
the asm pushes a result onto the reg-stack, i.e., the stack is one
|
1999-04-10 07:19:58 +02:00
|
|
|
deeper after the asm than it was before. But, it is possible that
|
|
|
|
reload will think that it can use the same reg for both the input and
|
|
|
|
the output, if input B dies in this insn.
|
|
|
|
|
|
|
|
If any input operand uses the @code{f} constraint, all output reg
|
|
|
|
constraints must use the @code{&} earlyclobber.
|
|
|
|
|
|
|
|
The asm above would be written as
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1999-04-10 07:19:58 +02:00
|
|
|
asm ("foo" : "=&t" (a) : "f" (b));
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1999-04-10 07:19:58 +02:00
|
|
|
|
|
|
|
@item
|
|
|
|
Some operands need to be in particular places on the stack. All
|
2001-06-13 00:40:00 +02:00
|
|
|
output operands fall in this category---there is no other way to
|
1999-04-10 07:19:58 +02:00
|
|
|
know which regs the outputs appear in unless the user indicates
|
|
|
|
this in the constraints.
|
|
|
|
|
|
|
|
Output operands must specifically indicate which reg an output
|
|
|
|
appears in after an asm. @code{=f} is not allowed: the operand
|
|
|
|
constraints must select a class with a single reg.
|
|
|
|
|
|
|
|
@item
|
|
|
|
Output operands may not be ``inserted'' between existing stack regs.
|
|
|
|
Since no 387 opcode uses a read/write operand, all output operands
|
|
|
|
are dead before the asm_operands, and are pushed by the asm_operands.
|
|
|
|
It makes no sense to push anywhere but the top of the reg-stack.
|
|
|
|
|
|
|
|
Output operands must start at the top of the reg-stack: output
|
|
|
|
operands may not ``skip'' a reg.
|
|
|
|
|
|
|
|
@item
|
|
|
|
Some asm statements may need extra stack space for internal
|
|
|
|
calculations. This can be guaranteed by clobbering stack registers
|
|
|
|
unrelated to the inputs and outputs.
|
|
|
|
|
|
|
|
@end enumerate
|
|
|
|
|
|
|
|
Here are a couple of reasonable asms to want to write. This asm
|
|
|
|
takes one input, which is internally popped, and produces two outputs.
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1999-04-10 07:19:58 +02:00
|
|
|
asm ("fsincos" : "=t" (cos), "=u" (sin) : "0" (inp));
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1999-04-10 07:19:58 +02:00
|
|
|
|
|
|
|
This asm takes two inputs, which are popped by the @code{fyl2xp1} opcode,
|
|
|
|
and replaces them with one output. The user must code the @code{st(1)}
|
|
|
|
clobber for reg-stack.c to know that @code{fyl2xp1} pops both inputs.
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1999-04-10 07:19:58 +02:00
|
|
|
asm ("fyl2xp1" : "=t" (result) : "0" (x), "u" (y) : "st(1)");
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1999-04-10 07:19:58 +02:00
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@include md.texi
|
|
|
|
|
|
|
|
@node Asm Labels
|
|
|
|
@section Controlling Names Used in Assembler Code
|
|
|
|
@cindex assembler names for identifiers
|
|
|
|
@cindex names used in assembler code
|
|
|
|
@cindex identifiers, names in assembler code
|
|
|
|
|
|
|
|
You can specify the name to be used in the assembler code for a C
|
|
|
|
function or variable by writing the @code{asm} (or @code{__asm__})
|
|
|
|
keyword after the declarator as follows:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
int foo asm ("myfoo") = 2;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
This specifies that the name to be used for the variable @code{foo} in
|
|
|
|
the assembler code should be @samp{myfoo} rather than the usual
|
|
|
|
@samp{_foo}.
|
|
|
|
|
|
|
|
On systems where an underscore is normally prepended to the name of a C
|
|
|
|
function or variable, this feature allows you to define names for the
|
|
|
|
linker that do not start with an underscore.
|
|
|
|
|
2001-05-21 20:36:57 +02:00
|
|
|
It does not make sense to use this feature with a non-static local
|
|
|
|
variable since such variables do not have assembler names. If you are
|
|
|
|
trying to put the variable in a particular register, see @ref{Explicit
|
|
|
|
Reg Vars}. GCC presently accepts such code with a warning, but will
|
|
|
|
probably be changed to issue an error, rather than a warning, in the
|
|
|
|
future.
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
You cannot use @code{asm} in this way in a function @emph{definition}; but
|
|
|
|
you can get the same effect by writing a declaration for the function
|
|
|
|
before its definition and putting @code{asm} there, like this:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
extern func () asm ("FUNC");
|
|
|
|
|
|
|
|
func (x, y)
|
|
|
|
int x, y;
|
2002-06-24 19:21:04 +02:00
|
|
|
/* @r{@dots{}} */
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
It is up to you to make sure that the assembler names you choose do not
|
|
|
|
conflict with any other assembler symbols. Also, you must not use a
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
register name; that would produce completely invalid assembler code. GCC
|
|
|
|
does not as yet have the ability to store static variables in registers.
|
1996-09-24 00:41:16 +02:00
|
|
|
Perhaps that will be added.
|
|
|
|
|
|
|
|
@node Explicit Reg Vars
|
|
|
|
@section Variables in Specified Registers
|
|
|
|
@cindex explicit register variables
|
|
|
|
@cindex variables in specified registers
|
|
|
|
@cindex specified registers
|
|
|
|
@cindex registers, global allocation
|
|
|
|
|
|
|
|
GNU C allows you to put a few global variables into specified hardware
|
|
|
|
registers. You can also specify the register in which an ordinary
|
|
|
|
register variable should be allocated.
|
|
|
|
|
|
|
|
@itemize @bullet
|
|
|
|
@item
|
|
|
|
Global register variables reserve registers throughout the program.
|
|
|
|
This may be useful in programs such as programming language
|
|
|
|
interpreters which have a couple of global variables that are accessed
|
|
|
|
very often.
|
|
|
|
|
|
|
|
@item
|
|
|
|
Local register variables in specific registers do not reserve the
|
2004-09-29 03:42:09 +02:00
|
|
|
registers, except at the point where they are used as input or output
|
|
|
|
operands in an @code{asm} statement and the @code{asm} statement itself is
|
|
|
|
not deleted. The compiler's data flow analysis is capable of determining
|
1996-09-24 00:41:16 +02:00
|
|
|
where the specified registers contain live values, and where they are
|
1998-07-16 22:00:57 +02:00
|
|
|
available for other uses. Stores into local register variables may be deleted
|
1998-07-14 21:59:53 +02:00
|
|
|
when they appear to be dead according to dataflow analysis. References
|
|
|
|
to local register variables may be deleted or moved or simplified.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
These local variables are sometimes convenient for use with the extended
|
|
|
|
@code{asm} feature (@pxref{Extended Asm}), if you want to write one
|
|
|
|
output of the assembler instruction directly into a particular register.
|
|
|
|
(This will work provided the register you specify fits the constraints
|
|
|
|
specified for that operand in the @code{asm}.)
|
|
|
|
@end itemize
|
|
|
|
|
|
|
|
@menu
|
|
|
|
* Global Reg Vars::
|
|
|
|
* Local Reg Vars::
|
|
|
|
@end menu
|
|
|
|
|
|
|
|
@node Global Reg Vars
|
|
|
|
@subsection Defining Global Register Variables
|
|
|
|
@cindex global register variables
|
|
|
|
@cindex registers, global variables in
|
|
|
|
|
|
|
|
You can define a global register variable in GNU C like this:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
register int *foo asm ("a5");
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
Here @code{a5} is the name of the register which should be used. Choose a
|
|
|
|
register which is normally saved and restored by function calls on your
|
|
|
|
machine, so that library routines will not clobber it.
|
|
|
|
|
|
|
|
Naturally the register name is cpu-dependent, so you would need to
|
|
|
|
conditionalize your program according to cpu type. The register
|
|
|
|
@code{a5} would be a good choice on a 68000 for a variable of pointer
|
|
|
|
type. On machines with register windows, be sure to choose a ``global''
|
|
|
|
register that is not affected magically by the function call mechanism.
|
|
|
|
|
|
|
|
In addition, operating systems on one type of cpu may differ in how they
|
|
|
|
name the registers; then you would need additional conditionals. For
|
|
|
|
example, some 68000 operating systems call this register @code{%a5}.
|
|
|
|
|
|
|
|
Eventually there may be a way of asking the compiler to choose a register
|
|
|
|
automatically, but first we need to figure out how it should choose and
|
|
|
|
how to enable you to guide the choice. No solution is evident.
|
|
|
|
|
|
|
|
Defining a global register variable in a certain register reserves that
|
|
|
|
register entirely for this use, at least within the current compilation.
|
|
|
|
The register will not be allocated for any other purpose in the functions
|
|
|
|
in the current compilation. The register will not be saved and restored by
|
|
|
|
these functions. Stores into this register are never deleted even if they
|
|
|
|
would appear to be dead, but references may be deleted or moved or
|
|
|
|
simplified.
|
|
|
|
|
|
|
|
It is not safe to access the global register variables from signal
|
|
|
|
handlers, or from more than one thread of control, because the system
|
|
|
|
library routines may temporarily use the register for other things (unless
|
|
|
|
you recompile them specially for the task at hand).
|
|
|
|
|
|
|
|
@cindex @code{qsort}, and global register variables
|
|
|
|
It is not safe for one function that uses a global register variable to
|
|
|
|
call another such function @code{foo} by way of a third function
|
2001-06-27 02:04:39 +02:00
|
|
|
@code{lose} that was compiled without knowledge of this variable (i.e.@: in a
|
1996-09-24 00:41:16 +02:00
|
|
|
different source file in which the variable wasn't declared). This is
|
|
|
|
because @code{lose} might save the register and put some other value there.
|
|
|
|
For example, you can't expect a global register variable to be available in
|
|
|
|
the comparison-function that you pass to @code{qsort}, since @code{qsort}
|
|
|
|
might have put something else in that register. (If you are prepared to
|
|
|
|
recompile @code{qsort} with the same global register variable, you can
|
|
|
|
solve this problem.)
|
|
|
|
|
|
|
|
If you want to recompile @code{qsort} or other source files which do not
|
|
|
|
actually use your global register variable, so that they will not use that
|
|
|
|
register for any other purpose, then it suffices to specify the compiler
|
2001-06-13 00:40:00 +02:00
|
|
|
option @option{-ffixed-@var{reg}}. You need not actually add a global
|
1996-09-24 00:41:16 +02:00
|
|
|
register declaration to their source code.
|
|
|
|
|
|
|
|
A function which can alter the value of a global register variable cannot
|
|
|
|
safely be called from a function compiled without this variable, because it
|
|
|
|
could clobber the value the caller expects to find there on return.
|
|
|
|
Therefore, the function which is the entry point into the part of the
|
|
|
|
program that uses the global register variable must explicitly save and
|
|
|
|
restore the value which belongs to its caller.
|
|
|
|
|
|
|
|
@cindex register variable after @code{longjmp}
|
|
|
|
@cindex global register after @code{longjmp}
|
|
|
|
@cindex value after @code{longjmp}
|
|
|
|
@findex longjmp
|
|
|
|
@findex setjmp
|
|
|
|
On most machines, @code{longjmp} will restore to each global register
|
|
|
|
variable the value it had at the time of the @code{setjmp}. On some
|
|
|
|
machines, however, @code{longjmp} will not change the value of global
|
|
|
|
register variables. To be portable, the function that called @code{setjmp}
|
|
|
|
should make other arrangements to save the values of the global register
|
|
|
|
variables, and to restore them in a @code{longjmp}. This way, the same
|
|
|
|
thing will happen regardless of what @code{longjmp} does.
|
|
|
|
|
|
|
|
All global register variable declarations must precede all function
|
|
|
|
definitions. If such a declaration could appear after function
|
|
|
|
definitions, the declaration would be too late to prevent the register from
|
|
|
|
being used for other purposes in the preceding functions.
|
|
|
|
|
|
|
|
Global register variables may not have initial values, because an
|
|
|
|
executable file has no means to supply initial contents for a register.
|
|
|
|
|
2002-09-16 00:48:06 +02:00
|
|
|
On the SPARC, there are reports that g3 @dots{} g7 are suitable
|
1996-09-24 00:41:16 +02:00
|
|
|
registers, but certain library functions, such as @code{getwd}, as well
|
|
|
|
as the subroutines for division and remainder, modify g3 and g4. g1 and
|
|
|
|
g2 are local temporaries.
|
|
|
|
|
|
|
|
On the 68000, a2 @dots{} a5 should be suitable, as should d2 @dots{} d7.
|
|
|
|
Of course, it will not do to use more than a few of those.
|
|
|
|
|
|
|
|
@node Local Reg Vars
|
|
|
|
@subsection Specifying Registers for Local Variables
|
|
|
|
@cindex local variables, specifying registers
|
|
|
|
@cindex specifying registers for local variables
|
|
|
|
@cindex registers for local variables
|
|
|
|
|
|
|
|
You can define a local register variable with a specified register
|
|
|
|
like this:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
register int *foo asm ("a5");
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
Here @code{a5} is the name of the register which should be used. Note
|
|
|
|
that this is the same syntax used for defining global register
|
|
|
|
variables, but for a local variable it would appear within a function.
|
|
|
|
|
|
|
|
Naturally the register name is cpu-dependent, but this is not a
|
|
|
|
problem, since specific registers are most often useful with explicit
|
|
|
|
assembler instructions (@pxref{Extended Asm}). Both of these things
|
|
|
|
generally require that you conditionalize your program according to
|
|
|
|
cpu type.
|
|
|
|
|
|
|
|
In addition, operating systems on one type of cpu may differ in how they
|
|
|
|
name the registers; then you would need additional conditionals. For
|
|
|
|
example, some 68000 operating systems call this register @code{%a5}.
|
|
|
|
|
|
|
|
Defining such a register variable does not reserve the register; it
|
|
|
|
remains available for other uses in places where flow control determines
|
2004-02-19 16:24:02 +01:00
|
|
|
the variable's value is not live.
|
1998-04-04 15:32:39 +02:00
|
|
|
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
This option does not guarantee that GCC will generate code that has
|
1998-04-04 15:32:39 +02:00
|
|
|
this variable in the register you specify at all times. You may not
|
2004-09-29 03:42:09 +02:00
|
|
|
code an explicit reference to this register in the @emph{assembler
|
|
|
|
instruction template} part of an @code{asm} statement and assume it will
|
|
|
|
always refer to this variable. However, using the variable as an
|
|
|
|
@code{asm} @emph{operand} guarantees that the specified register is used
|
|
|
|
for the operand.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
1998-07-16 22:00:57 +02:00
|
|
|
Stores into local register variables may be deleted when they appear to be dead
|
1998-07-14 21:59:53 +02:00
|
|
|
according to dataflow analysis. References to local register variables may
|
|
|
|
be deleted or moved or simplified.
|
|
|
|
|
2004-10-20 01:17:06 +02:00
|
|
|
As for global register variables, it's recommended that you choose a
|
|
|
|
register which is normally saved and restored by function calls on
|
|
|
|
your machine, so that library routines will not clobber it. A common
|
|
|
|
pitfall is to initialize multiple call-clobbered registers with
|
|
|
|
arbitrary expressions, where a function call or library call for an
|
|
|
|
arithmetic operator will overwrite a register value from a previous
|
|
|
|
assignment, for example @code{r0} below:
|
|
|
|
@smallexample
|
|
|
|
register int *p1 asm ("r0") = @dots{};
|
|
|
|
register int *p2 asm ("r1") = @dots{};
|
|
|
|
@end smallexample
|
|
|
|
In those cases, a solution is to use a temporary variable for
|
|
|
|
each arbitrary expression. @xref{Example of asm with clobbered asm reg}.
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@node Alternate Keywords
|
|
|
|
@section Alternate Keywords
|
|
|
|
@cindex alternate keywords
|
|
|
|
@cindex keywords, alternate
|
|
|
|
|
2001-01-12 19:51:27 +01:00
|
|
|
@option{-ansi} and the various @option{-std} options disable certain
|
c-common.c, [...]: Delete code implementing -traditional mode.
* c-common.c, c-common.h, c-decl.c, c-lex.c, c-parse.in,
c-tree.h, c-typeck.c, cppexp.c, cpplex.c, cpplib.c, cpplib.h,
cppmacro.c, objc/lang-specs.h, objc/objc-act.c,
builtin-types.def, builtins.def, dwarf2out.c, dwarfout.c,
gcc.c, toplev.c: Delete code implementing -traditional mode.
* ada/misc.c, ch/ch-tree.h, ch/decl.c, cp/decl2.c, f/com.c,
f/lex.c, f/top.c, java/builtins.c, java/decl.c: Delete
traditional-mode-related code copied from the C front end
but not used, or used only to permit the compiler to link.
* doc/bugreport.texi, doc/cpp.texi, doc/extend.texi,
doc/invoke.texi, doc/standards.texi, doc/trouble.texi:
Document removal of -traditional mode for compilation, and
remove documentation only relevant to that mode.
* config/nextstep.h, config/ptx4.h, config/svr4.h,
config/convex/convex.h, config/d30v/d30v.h,
config/i386/dgux.h, config/i386/osf1elf.h,
config/i386/osfelf.h, config/i386/osfrose.h,
config/i386/sco5.h, config/i386/sol2.h, config/m68k/a-ux.h,
config/m68k/hp310.h, config/m88k/dgux.h,
config/m88k/dguxbcs.h, config/m88k/luna.h, config/m88k/m88k.c,
config/m88k/m88k.h, config/m88k/openbsd.h,
config/mips/abi64.h, config/mips/osfrose.h,
config/mips/svr4-5.h, config/mips/svr4-t.h,
config/sparc/sol2-sld-64.h, config/sparc/sol2.h,
config/stormy16/stormy16.h: Remove all references to
-traditional from target specs. Delete all mention of the
no-longer-necessary TRADITIONAL_RETURN_FLOAT macro. Also
delete a couple of commented-out definitions of
DOLLARS_IN_IDENTIFIERS, with (incorrect) commentary referring
to -traditional.
* system.h: Poison TRADITIONAL_RETURN_FLOAT.
* doc/tm.texi: Remove mention of TRADITIONAL_RETURN_FLOAT macro.
* testsuite/gcc.c-torture/execute/920730-1t.c,
testsuite/gcc.c-torture/execute/920730-1t.x,
testsuite/gcc.dg/ext-glob.c: Delete test cases, only relevant
to -traditional.
From-SVN: r50110
2002-02-27 19:48:07 +01:00
|
|
|
keywords. This causes trouble when you want to use GNU C extensions, or
|
|
|
|
a general-purpose header file that should be usable by all programs,
|
|
|
|
including ISO C programs. The keywords @code{asm}, @code{typeof} and
|
|
|
|
@code{inline} are not available in programs compiled with
|
|
|
|
@option{-ansi} or @option{-std} (although @code{inline} can be used in a
|
|
|
|
program compiled with @option{-std=c99}). The ISO C99 keyword
|
2001-01-12 19:51:27 +01:00
|
|
|
@code{restrict} is only available when @option{-std=gnu99} (which will
|
|
|
|
eventually be the default) or @option{-std=c99} (or the equivalent
|
2001-06-25 01:04:49 +02:00
|
|
|
@option{-std=iso9899:1999}) is used.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
The way to solve these problems is to put @samp{__} at the beginning and
|
|
|
|
end of each problematical keyword. For example, use @code{__asm__}
|
c-common.c, [...]: Delete code implementing -traditional mode.
* c-common.c, c-common.h, c-decl.c, c-lex.c, c-parse.in,
c-tree.h, c-typeck.c, cppexp.c, cpplex.c, cpplib.c, cpplib.h,
cppmacro.c, objc/lang-specs.h, objc/objc-act.c,
builtin-types.def, builtins.def, dwarf2out.c, dwarfout.c,
gcc.c, toplev.c: Delete code implementing -traditional mode.
* ada/misc.c, ch/ch-tree.h, ch/decl.c, cp/decl2.c, f/com.c,
f/lex.c, f/top.c, java/builtins.c, java/decl.c: Delete
traditional-mode-related code copied from the C front end
but not used, or used only to permit the compiler to link.
* doc/bugreport.texi, doc/cpp.texi, doc/extend.texi,
doc/invoke.texi, doc/standards.texi, doc/trouble.texi:
Document removal of -traditional mode for compilation, and
remove documentation only relevant to that mode.
* config/nextstep.h, config/ptx4.h, config/svr4.h,
config/convex/convex.h, config/d30v/d30v.h,
config/i386/dgux.h, config/i386/osf1elf.h,
config/i386/osfelf.h, config/i386/osfrose.h,
config/i386/sco5.h, config/i386/sol2.h, config/m68k/a-ux.h,
config/m68k/hp310.h, config/m88k/dgux.h,
config/m88k/dguxbcs.h, config/m88k/luna.h, config/m88k/m88k.c,
config/m88k/m88k.h, config/m88k/openbsd.h,
config/mips/abi64.h, config/mips/osfrose.h,
config/mips/svr4-5.h, config/mips/svr4-t.h,
config/sparc/sol2-sld-64.h, config/sparc/sol2.h,
config/stormy16/stormy16.h: Remove all references to
-traditional from target specs. Delete all mention of the
no-longer-necessary TRADITIONAL_RETURN_FLOAT macro. Also
delete a couple of commented-out definitions of
DOLLARS_IN_IDENTIFIERS, with (incorrect) commentary referring
to -traditional.
* system.h: Poison TRADITIONAL_RETURN_FLOAT.
* doc/tm.texi: Remove mention of TRADITIONAL_RETURN_FLOAT macro.
* testsuite/gcc.c-torture/execute/920730-1t.c,
testsuite/gcc.c-torture/execute/920730-1t.x,
testsuite/gcc.dg/ext-glob.c: Delete test cases, only relevant
to -traditional.
From-SVN: r50110
2002-02-27 19:48:07 +01:00
|
|
|
instead of @code{asm}, and @code{__inline__} instead of @code{inline}.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
Other C compilers won't accept these alternative keywords; if you want to
|
|
|
|
compile with another compiler, you can define the alternate keywords as
|
|
|
|
macros to replace them with the customary keywords. It looks like this:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
#ifndef __GNUC__
|
|
|
|
#define __asm__ asm
|
|
|
|
#endif
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
1999-03-02 00:11:13 +01:00
|
|
|
@findex __extension__
|
2001-06-13 00:40:00 +02:00
|
|
|
@opindex pedantic
|
|
|
|
@option{-pedantic} and other options cause warnings for many GNU C extensions.
|
1999-09-23 21:41:04 +02:00
|
|
|
You can
|
1996-09-24 00:41:16 +02:00
|
|
|
prevent such warnings within one expression by writing
|
|
|
|
@code{__extension__} before the expression. @code{__extension__} has no
|
|
|
|
effect aside from this.
|
|
|
|
|
|
|
|
@node Incomplete Enums
|
|
|
|
@section Incomplete @code{enum} Types
|
|
|
|
|
|
|
|
You can define an @code{enum} tag without specifying its possible values.
|
|
|
|
This results in an incomplete type, much like what you get if you write
|
|
|
|
@code{struct foo} without describing the elements. A later declaration
|
|
|
|
which does specify the possible values completes the type.
|
|
|
|
|
|
|
|
You can't allocate variables or storage using the type while it is
|
|
|
|
incomplete. However, you can work with pointers to that type.
|
|
|
|
|
|
|
|
This extension may not be very useful, but it makes the handling of
|
|
|
|
@code{enum} more consistent with the way @code{struct} and @code{union}
|
|
|
|
are handled.
|
|
|
|
|
|
|
|
This extension is not supported by GNU C++.
|
|
|
|
|
|
|
|
@node Function Names
|
|
|
|
@section Function Names as Strings
|
cpplib.h (CPP_AT_NAME, [...]): New token types.
* cpplib.h (CPP_AT_NAME, CPP_OBJC_STRING): New token types.
(struct cpp_options): Add narrow_charset, wide_charset,
bytes_big_endian fields. Remove EBCDIC field.
(cpp_init_iconv, cpp_interpret_string): New external interfaces.
* cpphash.h: Include <iconv.h> if we have it, otherwise
provide a dummy definition of iconv_t.
(struct cpp_reader): Add narrow_cset_desc and wide_cset_desc fields.
(_cpp_valid_ucn): Update prototype.
(_cpp_destroy_iconv): New prototype.
* doc/cpp.texi: Document character set handling.
* doc/cppopts.texi: Document -fexec-charset= and -fexec-wide-charset=.
* doc/extend.texi: Delete entire section on multiline strings.
Rewrite section on __FUNCTION__ etc now that these are
variables in C.
* cppucnid.tab, cppucnid.pl: New files.
* cppucnid.h: New generated file.
* cppcharset.c: Include cppucnid.h. Lots of commentary added.
(iconv_open, iconv, iconv_close): Provide dummy definitions
if !HAVE_ICONV.
(SOURCE_CHARSET, struct strbuf, init_iconv_desc, cpp_init_iconv,
_cpp_destroy_iconv, convert_cset, width_to_mask, convert_ucn,
emit_numeric_escape, convert_hex, convert_oct, convert_escape,
cpp_interpret_string, narrow_str_to_charconst,
wide_str_to_charconst): New.
(ucn_valid_in_identifier): Use a binary search through the
ucnranges table defined in cppucnid.h, not a long chain of if
statements.
(_cpp_valid_ucn): Add a limit pointer. Downgrade "universal
character names are only valid in C++ and C99" to a warning.
Issue the "meaning of \[uU] is different in traditional C"
warning here. Take care not to let iconv see an invalid UCS
value if we get a malformed UCN. Issue an error if we don't
have iconv.
(cpp_interpret_charconst): Moved here from cpplex.c. Use
cpp_interpret_string to do the heavy lifting.
* cppinit.c (cpp_create_reader): Initialize bytes_big_endian,
narrow_charset, wide_charset fields of options structure.
(cpp_destroy): Call _cpp_destroy_iconv.
* cpplex.c (forms_identifier_p): Adjust call to _cpp_valid_ucn.
(maybe_read_ucn, hex_digit_value, cpp_parse_escape): Delete.
(cpp_interpret_charconst): Moved to cppcharset.c.
* cpplib.c (dequote_string): Delete.
(interpret_string_notranslate): New.
(do_line, do_linemarker): Use interpret_string_notranslate.
* Makefile.in (cppcharset.o): Depend on cppucnid.h.
* c-common.c (fname_string, combine_strings): Delete.
* c-common.h (fname_string, combine_strings): Delete prototypes.
* c-lex.c (ignore_escape_flag): Delete.
(cb_ident): Use cpp_interpret_string, not lex_string.
(get_nonpadding_token): New function.
(c_lex): Handle Objective-C @-prefixed identifiers and strings here.
Adjust calls to lex_string. Don't write *value twice.
(lex_string): Now handles string constant concatenation.
Most of the work handed off to cpp_interpret_string.
Call fix_string_type here.
* c-parse.in (STRING_FUNC_NAME, VAR_FUNC_NAME): Replace with
FUNC_NAME, throughout.
(OBJC_STRING): New token type.
(primary:STRING): No need to call fix_string_type here.
(primary:objc_string): Make that OBJC_STRING.
(objc_string nonterminal): Delete.
(yylexname): Delete code to handle fake string constants.
(yylexstring): Delete entirely.
(_yylex): Handle CPP_AT_NAME and CPP_OBJC_STRING. No need
to handle CPP_ATSIGN.
* c.opt (-fexec-charset=, -fwide-exec-charset=): New options.
* c-opts.c (missing_arg, c_common_handle_option): Handle
OPT_fexec_charset_ and OPT_fwide_exec_charset_.
(c_common_init): Set cpp_opts->bytes_big_endian, not
cpp_opts->EBCDIC. Call cpp_init_iconv.
(print_help): Document -fexec-charset= and -fexec-wide-charset=.
(TARGET_EBCDIC): Delete default definition.
* objc/objc-act.c (build_objc_string_object): No need to
handle string constant concatenation.
cp:
* parser.c (cp_lexer_read_token): No need to handle string
constant concatenation.
testsuite:
* gcc.c-torture/execute/wchar_t-1.x: New file; XFAIL wchar_t-1.c
everywhere.
* gcc.dg/concat.c: Concatenation of string constants with
__FUNCTION__ / __PRETTY_FUNCTION__ is now a hard error.
* gcc.dg/wtr-strcat-1.c: Loosen dg-warning regexp.
* gcc.dg/cpp/escape-2.c: Use wide character constants where
necessary to avoid multi-character character constant warning.
* gcc.dg/cpp/escape.c: Likewise.
* gcc.dg/cpp/ucs.c: Likewise.
Remove backslashes from dg-bogus comments, as they confuse Tcl.
Fix a typo.
libstdc++-v3:
* testsuite/22_locale/collate/compare/wchar_t/2.cc
* testsuite/22_locale/collate/compare/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/compare/wchar_t/wrapped_locale.cc
* testsuite/22_locale/collate/hash/wchar_t/2.cc
* testsuite/22_locale/collate/hash/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/hash/wchar_t/wrapped_locale.cc
* testsuite/22_locale/collate/transform/wchar_t/2.cc
* testsuite/22_locale/collate/transform/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/transform/wchar_t/wrapped_locale.cc:
XFAIL on all targets.
From-SVN: r68952
2003-07-05 02:24:00 +02:00
|
|
|
@cindex @code{__func__} identifier
|
2001-05-21 01:21:59 +02:00
|
|
|
@cindex @code{__FUNCTION__} identifier
|
|
|
|
@cindex @code{__PRETTY_FUNCTION__} identifier
|
1996-09-24 00:41:16 +02:00
|
|
|
|
cpplib.h (CPP_AT_NAME, [...]): New token types.
* cpplib.h (CPP_AT_NAME, CPP_OBJC_STRING): New token types.
(struct cpp_options): Add narrow_charset, wide_charset,
bytes_big_endian fields. Remove EBCDIC field.
(cpp_init_iconv, cpp_interpret_string): New external interfaces.
* cpphash.h: Include <iconv.h> if we have it, otherwise
provide a dummy definition of iconv_t.
(struct cpp_reader): Add narrow_cset_desc and wide_cset_desc fields.
(_cpp_valid_ucn): Update prototype.
(_cpp_destroy_iconv): New prototype.
* doc/cpp.texi: Document character set handling.
* doc/cppopts.texi: Document -fexec-charset= and -fexec-wide-charset=.
* doc/extend.texi: Delete entire section on multiline strings.
Rewrite section on __FUNCTION__ etc now that these are
variables in C.
* cppucnid.tab, cppucnid.pl: New files.
* cppucnid.h: New generated file.
* cppcharset.c: Include cppucnid.h. Lots of commentary added.
(iconv_open, iconv, iconv_close): Provide dummy definitions
if !HAVE_ICONV.
(SOURCE_CHARSET, struct strbuf, init_iconv_desc, cpp_init_iconv,
_cpp_destroy_iconv, convert_cset, width_to_mask, convert_ucn,
emit_numeric_escape, convert_hex, convert_oct, convert_escape,
cpp_interpret_string, narrow_str_to_charconst,
wide_str_to_charconst): New.
(ucn_valid_in_identifier): Use a binary search through the
ucnranges table defined in cppucnid.h, not a long chain of if
statements.
(_cpp_valid_ucn): Add a limit pointer. Downgrade "universal
character names are only valid in C++ and C99" to a warning.
Issue the "meaning of \[uU] is different in traditional C"
warning here. Take care not to let iconv see an invalid UCS
value if we get a malformed UCN. Issue an error if we don't
have iconv.
(cpp_interpret_charconst): Moved here from cpplex.c. Use
cpp_interpret_string to do the heavy lifting.
* cppinit.c (cpp_create_reader): Initialize bytes_big_endian,
narrow_charset, wide_charset fields of options structure.
(cpp_destroy): Call _cpp_destroy_iconv.
* cpplex.c (forms_identifier_p): Adjust call to _cpp_valid_ucn.
(maybe_read_ucn, hex_digit_value, cpp_parse_escape): Delete.
(cpp_interpret_charconst): Moved to cppcharset.c.
* cpplib.c (dequote_string): Delete.
(interpret_string_notranslate): New.
(do_line, do_linemarker): Use interpret_string_notranslate.
* Makefile.in (cppcharset.o): Depend on cppucnid.h.
* c-common.c (fname_string, combine_strings): Delete.
* c-common.h (fname_string, combine_strings): Delete prototypes.
* c-lex.c (ignore_escape_flag): Delete.
(cb_ident): Use cpp_interpret_string, not lex_string.
(get_nonpadding_token): New function.
(c_lex): Handle Objective-C @-prefixed identifiers and strings here.
Adjust calls to lex_string. Don't write *value twice.
(lex_string): Now handles string constant concatenation.
Most of the work handed off to cpp_interpret_string.
Call fix_string_type here.
* c-parse.in (STRING_FUNC_NAME, VAR_FUNC_NAME): Replace with
FUNC_NAME, throughout.
(OBJC_STRING): New token type.
(primary:STRING): No need to call fix_string_type here.
(primary:objc_string): Make that OBJC_STRING.
(objc_string nonterminal): Delete.
(yylexname): Delete code to handle fake string constants.
(yylexstring): Delete entirely.
(_yylex): Handle CPP_AT_NAME and CPP_OBJC_STRING. No need
to handle CPP_ATSIGN.
* c.opt (-fexec-charset=, -fwide-exec-charset=): New options.
* c-opts.c (missing_arg, c_common_handle_option): Handle
OPT_fexec_charset_ and OPT_fwide_exec_charset_.
(c_common_init): Set cpp_opts->bytes_big_endian, not
cpp_opts->EBCDIC. Call cpp_init_iconv.
(print_help): Document -fexec-charset= and -fexec-wide-charset=.
(TARGET_EBCDIC): Delete default definition.
* objc/objc-act.c (build_objc_string_object): No need to
handle string constant concatenation.
cp:
* parser.c (cp_lexer_read_token): No need to handle string
constant concatenation.
testsuite:
* gcc.c-torture/execute/wchar_t-1.x: New file; XFAIL wchar_t-1.c
everywhere.
* gcc.dg/concat.c: Concatenation of string constants with
__FUNCTION__ / __PRETTY_FUNCTION__ is now a hard error.
* gcc.dg/wtr-strcat-1.c: Loosen dg-warning regexp.
* gcc.dg/cpp/escape-2.c: Use wide character constants where
necessary to avoid multi-character character constant warning.
* gcc.dg/cpp/escape.c: Likewise.
* gcc.dg/cpp/ucs.c: Likewise.
Remove backslashes from dg-bogus comments, as they confuse Tcl.
Fix a typo.
libstdc++-v3:
* testsuite/22_locale/collate/compare/wchar_t/2.cc
* testsuite/22_locale/collate/compare/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/compare/wchar_t/wrapped_locale.cc
* testsuite/22_locale/collate/hash/wchar_t/2.cc
* testsuite/22_locale/collate/hash/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/hash/wchar_t/wrapped_locale.cc
* testsuite/22_locale/collate/transform/wchar_t/2.cc
* testsuite/22_locale/collate/transform/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/transform/wchar_t/wrapped_locale.cc:
XFAIL on all targets.
From-SVN: r68952
2003-07-05 02:24:00 +02:00
|
|
|
GCC provides three magic variables which hold the name of the current
|
|
|
|
function, as a string. The first of these is @code{__func__}, which
|
|
|
|
is part of the C99 standard:
|
|
|
|
|
|
|
|
@display
|
|
|
|
The identifier @code{__func__} is implicitly declared by the translator
|
|
|
|
as if, immediately following the opening brace of each function
|
|
|
|
definition, the declaration
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
static const char __func__[] = "function-name";
|
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
cpplib.h (CPP_AT_NAME, [...]): New token types.
* cpplib.h (CPP_AT_NAME, CPP_OBJC_STRING): New token types.
(struct cpp_options): Add narrow_charset, wide_charset,
bytes_big_endian fields. Remove EBCDIC field.
(cpp_init_iconv, cpp_interpret_string): New external interfaces.
* cpphash.h: Include <iconv.h> if we have it, otherwise
provide a dummy definition of iconv_t.
(struct cpp_reader): Add narrow_cset_desc and wide_cset_desc fields.
(_cpp_valid_ucn): Update prototype.
(_cpp_destroy_iconv): New prototype.
* doc/cpp.texi: Document character set handling.
* doc/cppopts.texi: Document -fexec-charset= and -fexec-wide-charset=.
* doc/extend.texi: Delete entire section on multiline strings.
Rewrite section on __FUNCTION__ etc now that these are
variables in C.
* cppucnid.tab, cppucnid.pl: New files.
* cppucnid.h: New generated file.
* cppcharset.c: Include cppucnid.h. Lots of commentary added.
(iconv_open, iconv, iconv_close): Provide dummy definitions
if !HAVE_ICONV.
(SOURCE_CHARSET, struct strbuf, init_iconv_desc, cpp_init_iconv,
_cpp_destroy_iconv, convert_cset, width_to_mask, convert_ucn,
emit_numeric_escape, convert_hex, convert_oct, convert_escape,
cpp_interpret_string, narrow_str_to_charconst,
wide_str_to_charconst): New.
(ucn_valid_in_identifier): Use a binary search through the
ucnranges table defined in cppucnid.h, not a long chain of if
statements.
(_cpp_valid_ucn): Add a limit pointer. Downgrade "universal
character names are only valid in C++ and C99" to a warning.
Issue the "meaning of \[uU] is different in traditional C"
warning here. Take care not to let iconv see an invalid UCS
value if we get a malformed UCN. Issue an error if we don't
have iconv.
(cpp_interpret_charconst): Moved here from cpplex.c. Use
cpp_interpret_string to do the heavy lifting.
* cppinit.c (cpp_create_reader): Initialize bytes_big_endian,
narrow_charset, wide_charset fields of options structure.
(cpp_destroy): Call _cpp_destroy_iconv.
* cpplex.c (forms_identifier_p): Adjust call to _cpp_valid_ucn.
(maybe_read_ucn, hex_digit_value, cpp_parse_escape): Delete.
(cpp_interpret_charconst): Moved to cppcharset.c.
* cpplib.c (dequote_string): Delete.
(interpret_string_notranslate): New.
(do_line, do_linemarker): Use interpret_string_notranslate.
* Makefile.in (cppcharset.o): Depend on cppucnid.h.
* c-common.c (fname_string, combine_strings): Delete.
* c-common.h (fname_string, combine_strings): Delete prototypes.
* c-lex.c (ignore_escape_flag): Delete.
(cb_ident): Use cpp_interpret_string, not lex_string.
(get_nonpadding_token): New function.
(c_lex): Handle Objective-C @-prefixed identifiers and strings here.
Adjust calls to lex_string. Don't write *value twice.
(lex_string): Now handles string constant concatenation.
Most of the work handed off to cpp_interpret_string.
Call fix_string_type here.
* c-parse.in (STRING_FUNC_NAME, VAR_FUNC_NAME): Replace with
FUNC_NAME, throughout.
(OBJC_STRING): New token type.
(primary:STRING): No need to call fix_string_type here.
(primary:objc_string): Make that OBJC_STRING.
(objc_string nonterminal): Delete.
(yylexname): Delete code to handle fake string constants.
(yylexstring): Delete entirely.
(_yylex): Handle CPP_AT_NAME and CPP_OBJC_STRING. No need
to handle CPP_ATSIGN.
* c.opt (-fexec-charset=, -fwide-exec-charset=): New options.
* c-opts.c (missing_arg, c_common_handle_option): Handle
OPT_fexec_charset_ and OPT_fwide_exec_charset_.
(c_common_init): Set cpp_opts->bytes_big_endian, not
cpp_opts->EBCDIC. Call cpp_init_iconv.
(print_help): Document -fexec-charset= and -fexec-wide-charset=.
(TARGET_EBCDIC): Delete default definition.
* objc/objc-act.c (build_objc_string_object): No need to
handle string constant concatenation.
cp:
* parser.c (cp_lexer_read_token): No need to handle string
constant concatenation.
testsuite:
* gcc.c-torture/execute/wchar_t-1.x: New file; XFAIL wchar_t-1.c
everywhere.
* gcc.dg/concat.c: Concatenation of string constants with
__FUNCTION__ / __PRETTY_FUNCTION__ is now a hard error.
* gcc.dg/wtr-strcat-1.c: Loosen dg-warning regexp.
* gcc.dg/cpp/escape-2.c: Use wide character constants where
necessary to avoid multi-character character constant warning.
* gcc.dg/cpp/escape.c: Likewise.
* gcc.dg/cpp/ucs.c: Likewise.
Remove backslashes from dg-bogus comments, as they confuse Tcl.
Fix a typo.
libstdc++-v3:
* testsuite/22_locale/collate/compare/wchar_t/2.cc
* testsuite/22_locale/collate/compare/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/compare/wchar_t/wrapped_locale.cc
* testsuite/22_locale/collate/hash/wchar_t/2.cc
* testsuite/22_locale/collate/hash/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/hash/wchar_t/wrapped_locale.cc
* testsuite/22_locale/collate/transform/wchar_t/2.cc
* testsuite/22_locale/collate/transform/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/transform/wchar_t/wrapped_locale.cc:
XFAIL on all targets.
From-SVN: r68952
2003-07-05 02:24:00 +02:00
|
|
|
appeared, where function-name is the name of the lexically-enclosing
|
|
|
|
function. This name is the unadorned name of the function.
|
|
|
|
@end display
|
|
|
|
|
|
|
|
@code{__FUNCTION__} is another name for @code{__func__}. Older
|
|
|
|
versions of GCC recognize only this name. However, it is not
|
|
|
|
standardized. For maximum portability, we recommend you use
|
|
|
|
@code{__func__}, but provide a fallback definition with the
|
|
|
|
preprocessor:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
#if __STDC_VERSION__ < 199901L
|
|
|
|
# if __GNUC__ >= 2
|
|
|
|
# define __func__ __FUNCTION__
|
|
|
|
# else
|
|
|
|
# define __func__ "<unknown>"
|
|
|
|
# endif
|
|
|
|
#endif
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
In C, @code{__PRETTY_FUNCTION__} is yet another name for
|
|
|
|
@code{__func__}. However, in C++, @code{__PRETTY_FUNCTION__} contains
|
|
|
|
the type signature of the function as well as its bare name. For
|
|
|
|
example, this program:
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@smallexample
|
|
|
|
extern "C" @{
|
|
|
|
extern int printf (char *, ...);
|
|
|
|
@}
|
|
|
|
|
|
|
|
class a @{
|
|
|
|
public:
|
2003-03-14 09:47:05 +01:00
|
|
|
void sub (int i)
|
1996-09-24 00:41:16 +02:00
|
|
|
@{
|
|
|
|
printf ("__FUNCTION__ = %s\n", __FUNCTION__);
|
|
|
|
printf ("__PRETTY_FUNCTION__ = %s\n", __PRETTY_FUNCTION__);
|
|
|
|
@}
|
|
|
|
@};
|
|
|
|
|
|
|
|
int
|
|
|
|
main (void)
|
|
|
|
@{
|
|
|
|
a ax;
|
|
|
|
ax.sub (0);
|
|
|
|
return 0;
|
|
|
|
@}
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@noindent
|
|
|
|
gives this output:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
__FUNCTION__ = sub
|
cpplib.h (CPP_AT_NAME, [...]): New token types.
* cpplib.h (CPP_AT_NAME, CPP_OBJC_STRING): New token types.
(struct cpp_options): Add narrow_charset, wide_charset,
bytes_big_endian fields. Remove EBCDIC field.
(cpp_init_iconv, cpp_interpret_string): New external interfaces.
* cpphash.h: Include <iconv.h> if we have it, otherwise
provide a dummy definition of iconv_t.
(struct cpp_reader): Add narrow_cset_desc and wide_cset_desc fields.
(_cpp_valid_ucn): Update prototype.
(_cpp_destroy_iconv): New prototype.
* doc/cpp.texi: Document character set handling.
* doc/cppopts.texi: Document -fexec-charset= and -fexec-wide-charset=.
* doc/extend.texi: Delete entire section on multiline strings.
Rewrite section on __FUNCTION__ etc now that these are
variables in C.
* cppucnid.tab, cppucnid.pl: New files.
* cppucnid.h: New generated file.
* cppcharset.c: Include cppucnid.h. Lots of commentary added.
(iconv_open, iconv, iconv_close): Provide dummy definitions
if !HAVE_ICONV.
(SOURCE_CHARSET, struct strbuf, init_iconv_desc, cpp_init_iconv,
_cpp_destroy_iconv, convert_cset, width_to_mask, convert_ucn,
emit_numeric_escape, convert_hex, convert_oct, convert_escape,
cpp_interpret_string, narrow_str_to_charconst,
wide_str_to_charconst): New.
(ucn_valid_in_identifier): Use a binary search through the
ucnranges table defined in cppucnid.h, not a long chain of if
statements.
(_cpp_valid_ucn): Add a limit pointer. Downgrade "universal
character names are only valid in C++ and C99" to a warning.
Issue the "meaning of \[uU] is different in traditional C"
warning here. Take care not to let iconv see an invalid UCS
value if we get a malformed UCN. Issue an error if we don't
have iconv.
(cpp_interpret_charconst): Moved here from cpplex.c. Use
cpp_interpret_string to do the heavy lifting.
* cppinit.c (cpp_create_reader): Initialize bytes_big_endian,
narrow_charset, wide_charset fields of options structure.
(cpp_destroy): Call _cpp_destroy_iconv.
* cpplex.c (forms_identifier_p): Adjust call to _cpp_valid_ucn.
(maybe_read_ucn, hex_digit_value, cpp_parse_escape): Delete.
(cpp_interpret_charconst): Moved to cppcharset.c.
* cpplib.c (dequote_string): Delete.
(interpret_string_notranslate): New.
(do_line, do_linemarker): Use interpret_string_notranslate.
* Makefile.in (cppcharset.o): Depend on cppucnid.h.
* c-common.c (fname_string, combine_strings): Delete.
* c-common.h (fname_string, combine_strings): Delete prototypes.
* c-lex.c (ignore_escape_flag): Delete.
(cb_ident): Use cpp_interpret_string, not lex_string.
(get_nonpadding_token): New function.
(c_lex): Handle Objective-C @-prefixed identifiers and strings here.
Adjust calls to lex_string. Don't write *value twice.
(lex_string): Now handles string constant concatenation.
Most of the work handed off to cpp_interpret_string.
Call fix_string_type here.
* c-parse.in (STRING_FUNC_NAME, VAR_FUNC_NAME): Replace with
FUNC_NAME, throughout.
(OBJC_STRING): New token type.
(primary:STRING): No need to call fix_string_type here.
(primary:objc_string): Make that OBJC_STRING.
(objc_string nonterminal): Delete.
(yylexname): Delete code to handle fake string constants.
(yylexstring): Delete entirely.
(_yylex): Handle CPP_AT_NAME and CPP_OBJC_STRING. No need
to handle CPP_ATSIGN.
* c.opt (-fexec-charset=, -fwide-exec-charset=): New options.
* c-opts.c (missing_arg, c_common_handle_option): Handle
OPT_fexec_charset_ and OPT_fwide_exec_charset_.
(c_common_init): Set cpp_opts->bytes_big_endian, not
cpp_opts->EBCDIC. Call cpp_init_iconv.
(print_help): Document -fexec-charset= and -fexec-wide-charset=.
(TARGET_EBCDIC): Delete default definition.
* objc/objc-act.c (build_objc_string_object): No need to
handle string constant concatenation.
cp:
* parser.c (cp_lexer_read_token): No need to handle string
constant concatenation.
testsuite:
* gcc.c-torture/execute/wchar_t-1.x: New file; XFAIL wchar_t-1.c
everywhere.
* gcc.dg/concat.c: Concatenation of string constants with
__FUNCTION__ / __PRETTY_FUNCTION__ is now a hard error.
* gcc.dg/wtr-strcat-1.c: Loosen dg-warning regexp.
* gcc.dg/cpp/escape-2.c: Use wide character constants where
necessary to avoid multi-character character constant warning.
* gcc.dg/cpp/escape.c: Likewise.
* gcc.dg/cpp/ucs.c: Likewise.
Remove backslashes from dg-bogus comments, as they confuse Tcl.
Fix a typo.
libstdc++-v3:
* testsuite/22_locale/collate/compare/wchar_t/2.cc
* testsuite/22_locale/collate/compare/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/compare/wchar_t/wrapped_locale.cc
* testsuite/22_locale/collate/hash/wchar_t/2.cc
* testsuite/22_locale/collate/hash/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/hash/wchar_t/wrapped_locale.cc
* testsuite/22_locale/collate/transform/wchar_t/2.cc
* testsuite/22_locale/collate/transform/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/transform/wchar_t/wrapped_locale.cc:
XFAIL on all targets.
From-SVN: r68952
2003-07-05 02:24:00 +02:00
|
|
|
__PRETTY_FUNCTION__ = void a::sub(int)
|
1999-10-13 09:27:10 +02:00
|
|
|
@end smallexample
|
|
|
|
|
cpplib.h (CPP_AT_NAME, [...]): New token types.
* cpplib.h (CPP_AT_NAME, CPP_OBJC_STRING): New token types.
(struct cpp_options): Add narrow_charset, wide_charset,
bytes_big_endian fields. Remove EBCDIC field.
(cpp_init_iconv, cpp_interpret_string): New external interfaces.
* cpphash.h: Include <iconv.h> if we have it, otherwise
provide a dummy definition of iconv_t.
(struct cpp_reader): Add narrow_cset_desc and wide_cset_desc fields.
(_cpp_valid_ucn): Update prototype.
(_cpp_destroy_iconv): New prototype.
* doc/cpp.texi: Document character set handling.
* doc/cppopts.texi: Document -fexec-charset= and -fexec-wide-charset=.
* doc/extend.texi: Delete entire section on multiline strings.
Rewrite section on __FUNCTION__ etc now that these are
variables in C.
* cppucnid.tab, cppucnid.pl: New files.
* cppucnid.h: New generated file.
* cppcharset.c: Include cppucnid.h. Lots of commentary added.
(iconv_open, iconv, iconv_close): Provide dummy definitions
if !HAVE_ICONV.
(SOURCE_CHARSET, struct strbuf, init_iconv_desc, cpp_init_iconv,
_cpp_destroy_iconv, convert_cset, width_to_mask, convert_ucn,
emit_numeric_escape, convert_hex, convert_oct, convert_escape,
cpp_interpret_string, narrow_str_to_charconst,
wide_str_to_charconst): New.
(ucn_valid_in_identifier): Use a binary search through the
ucnranges table defined in cppucnid.h, not a long chain of if
statements.
(_cpp_valid_ucn): Add a limit pointer. Downgrade "universal
character names are only valid in C++ and C99" to a warning.
Issue the "meaning of \[uU] is different in traditional C"
warning here. Take care not to let iconv see an invalid UCS
value if we get a malformed UCN. Issue an error if we don't
have iconv.
(cpp_interpret_charconst): Moved here from cpplex.c. Use
cpp_interpret_string to do the heavy lifting.
* cppinit.c (cpp_create_reader): Initialize bytes_big_endian,
narrow_charset, wide_charset fields of options structure.
(cpp_destroy): Call _cpp_destroy_iconv.
* cpplex.c (forms_identifier_p): Adjust call to _cpp_valid_ucn.
(maybe_read_ucn, hex_digit_value, cpp_parse_escape): Delete.
(cpp_interpret_charconst): Moved to cppcharset.c.
* cpplib.c (dequote_string): Delete.
(interpret_string_notranslate): New.
(do_line, do_linemarker): Use interpret_string_notranslate.
* Makefile.in (cppcharset.o): Depend on cppucnid.h.
* c-common.c (fname_string, combine_strings): Delete.
* c-common.h (fname_string, combine_strings): Delete prototypes.
* c-lex.c (ignore_escape_flag): Delete.
(cb_ident): Use cpp_interpret_string, not lex_string.
(get_nonpadding_token): New function.
(c_lex): Handle Objective-C @-prefixed identifiers and strings here.
Adjust calls to lex_string. Don't write *value twice.
(lex_string): Now handles string constant concatenation.
Most of the work handed off to cpp_interpret_string.
Call fix_string_type here.
* c-parse.in (STRING_FUNC_NAME, VAR_FUNC_NAME): Replace with
FUNC_NAME, throughout.
(OBJC_STRING): New token type.
(primary:STRING): No need to call fix_string_type here.
(primary:objc_string): Make that OBJC_STRING.
(objc_string nonterminal): Delete.
(yylexname): Delete code to handle fake string constants.
(yylexstring): Delete entirely.
(_yylex): Handle CPP_AT_NAME and CPP_OBJC_STRING. No need
to handle CPP_ATSIGN.
* c.opt (-fexec-charset=, -fwide-exec-charset=): New options.
* c-opts.c (missing_arg, c_common_handle_option): Handle
OPT_fexec_charset_ and OPT_fwide_exec_charset_.
(c_common_init): Set cpp_opts->bytes_big_endian, not
cpp_opts->EBCDIC. Call cpp_init_iconv.
(print_help): Document -fexec-charset= and -fexec-wide-charset=.
(TARGET_EBCDIC): Delete default definition.
* objc/objc-act.c (build_objc_string_object): No need to
handle string constant concatenation.
cp:
* parser.c (cp_lexer_read_token): No need to handle string
constant concatenation.
testsuite:
* gcc.c-torture/execute/wchar_t-1.x: New file; XFAIL wchar_t-1.c
everywhere.
* gcc.dg/concat.c: Concatenation of string constants with
__FUNCTION__ / __PRETTY_FUNCTION__ is now a hard error.
* gcc.dg/wtr-strcat-1.c: Loosen dg-warning regexp.
* gcc.dg/cpp/escape-2.c: Use wide character constants where
necessary to avoid multi-character character constant warning.
* gcc.dg/cpp/escape.c: Likewise.
* gcc.dg/cpp/ucs.c: Likewise.
Remove backslashes from dg-bogus comments, as they confuse Tcl.
Fix a typo.
libstdc++-v3:
* testsuite/22_locale/collate/compare/wchar_t/2.cc
* testsuite/22_locale/collate/compare/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/compare/wchar_t/wrapped_locale.cc
* testsuite/22_locale/collate/hash/wchar_t/2.cc
* testsuite/22_locale/collate/hash/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/hash/wchar_t/wrapped_locale.cc
* testsuite/22_locale/collate/transform/wchar_t/2.cc
* testsuite/22_locale/collate/transform/wchar_t/wrapped_env.cc
* testsuite/22_locale/collate/transform/wchar_t/wrapped_locale.cc:
XFAIL on all targets.
From-SVN: r68952
2003-07-05 02:24:00 +02:00
|
|
|
These identifiers are not preprocessor macros. In GCC 3.3 and
|
|
|
|
earlier, in C only, @code{__FUNCTION__} and @code{__PRETTY_FUNCTION__}
|
|
|
|
were treated as string literals; they could be used to initialize
|
|
|
|
@code{char} arrays, and they could be concatenated with other string
|
|
|
|
literals. GCC 3.4 and later treat them as variables, like
|
|
|
|
@code{__func__}. In C++, @code{__FUNCTION__} and
|
|
|
|
@code{__PRETTY_FUNCTION__} have always been variables.
|
1999-10-13 09:27:10 +02:00
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@node Return Address
|
|
|
|
@section Getting the Return or Frame Address of a Function
|
|
|
|
|
|
|
|
These functions may be used to get information about the callers of a
|
|
|
|
function.
|
|
|
|
|
2001-06-13 00:40:00 +02:00
|
|
|
@deftypefn {Built-in Function} {void *} __builtin_return_address (unsigned int @var{level})
|
1996-09-24 00:41:16 +02:00
|
|
|
This function returns the return address of the current function, or of
|
|
|
|
one of its callers. The @var{level} argument is number of frames to
|
|
|
|
scan up the call stack. A value of @code{0} yields the return address
|
|
|
|
of the current function, a value of @code{1} yields the return address
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
of the caller of the current function, and so forth. When inlining
|
2002-06-10 21:12:10 +02:00
|
|
|
the expected behavior is that the function will return the address of
|
|
|
|
the function that will be returned to. To work around this behavior use
|
|
|
|
the @code{noinline} function attribute.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
The @var{level} argument must be a constant integer.
|
|
|
|
|
|
|
|
On some machines it may be impossible to determine the return address of
|
|
|
|
any function other than the current one; in such cases, or when the top
|
2001-07-23 23:20:35 +02:00
|
|
|
of the stack has been reached, this function will return @code{0} or a
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
random value. In addition, @code{__builtin_frame_address} may be used
|
2001-07-23 23:20:35 +02:00
|
|
|
to determine if the top of the stack has been reached.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-10-10 01:11:55 +02:00
|
|
|
This function should only be used with a nonzero argument for debugging
|
1996-09-24 00:41:16 +02:00
|
|
|
purposes.
|
2001-06-13 00:40:00 +02:00
|
|
|
@end deftypefn
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-06-13 00:40:00 +02:00
|
|
|
@deftypefn {Built-in Function} {void *} __builtin_frame_address (unsigned int @var{level})
|
1996-09-24 00:41:16 +02:00
|
|
|
This function is similar to @code{__builtin_return_address}, but it
|
|
|
|
returns the address of the function frame rather than the return address
|
|
|
|
of the function. Calling @code{__builtin_frame_address} with a value of
|
|
|
|
@code{0} yields the frame address of the current function, a value of
|
|
|
|
@code{1} yields the frame address of the caller of the current function,
|
|
|
|
and so forth.
|
|
|
|
|
|
|
|
The frame is the area on the stack which holds local variables and saved
|
|
|
|
registers. The frame address is normally the address of the first word
|
|
|
|
pushed on to the stack by the function. However, the exact definition
|
|
|
|
depends upon the processor and the calling convention. If the processor
|
|
|
|
has a dedicated frame pointer register, and the function has a frame,
|
|
|
|
then @code{__builtin_frame_address} will return the value of the frame
|
|
|
|
pointer register.
|
|
|
|
|
2001-07-23 23:20:35 +02:00
|
|
|
On some machines it may be impossible to determine the frame address of
|
|
|
|
any function other than the current one; in such cases, or when the top
|
|
|
|
of the stack has been reached, this function will return @code{0} if
|
|
|
|
the first frame pointer is properly initialized by the startup code.
|
|
|
|
|
2001-10-10 01:11:55 +02:00
|
|
|
This function should only be used with a nonzero argument for debugging
|
2001-07-23 23:20:35 +02:00
|
|
|
purposes.
|
2001-06-13 00:40:00 +02:00
|
|
|
@end deftypefn
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-09-29 18:33:20 +02:00
|
|
|
@node Vector Extensions
|
|
|
|
@section Using vector instructions through built-in functions
|
|
|
|
|
|
|
|
On some targets, the instruction set contains SIMD vector instructions that
|
|
|
|
operate on multiple values contained in one large register at the same time.
|
|
|
|
For example, on the i386 the MMX, 3Dnow! and SSE extensions can be used
|
|
|
|
this way.
|
|
|
|
|
|
|
|
The first step in using these extensions is to provide the necessary data
|
|
|
|
types. This should be done using an appropriate @code{typedef}:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
c-common.c (c_common_type_for_mode): Build vector types on demand.
gcc/ChangeLog
2004-03-16 Paolo Bonzini <bonzini@gnu.org>
* c-common.c (c_common_type_for_mode): Build vector types on
demand.
(handle_mode_attribute): Deprecate using the mode attribute
to create vector types. Fix indentation.
(vector_type_node_list): Remove.
(handle_vector_size_attribute): Create vector types on demand.
Strip a NON_LVALUE_EXPR from the attribute if there is one.
* c-typeck.c (comptypes): Make vector types compatible if they
have the same underlying mode.
(convert_for_assignment): Use comptypes to convert between
vector types.
* tree.c (build_common_tree_nodes_2): Do not create vector types.
* config/arm/arm.c (arm_init_iwmmxt_builtins): Create necessary
vector types.
* tree.h: Remove vector types.
* config/i386/i386.c (i386_init_mmx_sse_builtins): Likewise.
* config/rs6000/rs6000.c (rs6000_init_builtins): Likewise.
(V16QI_type_node, V2SI_type_node, V2SF_type_node, V4HI_type_node,
V4SI_type_node, V4SF_type_node, V8HI_type_node): New globals.
* doc/extend.texi (Vector Types): Document how to use the
vector_size attribute to create vectors, rather than mode.
* config/arm/mmintrin.h: Use vector_size attribute, not mode.
* config/i386/emmintrin.h: Likewise.
* config/i386/mmintrin.h: Likewise.
* config/i386/xmmintrin.h: Likewise.
* config/sh/ushmedia.h: Likwise.
testsuite/ChangeLog
2004-03-16 Paolo Bonzini <bonzini@gnu.org>
* g++.dg/eh/simd-1.C: Use vector_size attribute, not mode.
* g++.dg/eh/simd-2.C: Likewise.
* g++.dg/init/array10.C: Likewise.
* gcc.c-torture/compile/simd-1.c: Likewise.
* gcc.c-torture/compile/simd-2.c: Likewise.
* gcc.c-torture/compile/simd-3.c: Likewise.
* gcc.c-torture/compile/simd-4.c: Likewise.
* gcc.c-torture/compile/simd-6.c: Likewise.
* gcc.c-torture/execute/simd-1.c: Likewise.
* gcc.c-torture/execute/simd-2.c: Likewise.
* gcc.dg/compat/vector-defs.h: Likewise.
* gcc.dg/20020531-1.c: Likewise.
* gcc.dg/altivec-3.c: Likewise.
* gcc.dg/altivec-4.c: Likewise.
* gcc.dg/altivec-varargs-1.c: Likewise.
* testsuite/gcc.dg/compat/vector-defs.h: Likewise.
* gcc.dg/i386-mmx-3.c: Likewise.
* gcc.dg/i386-sse-4.c: Likewise.
* gcc.dg/i386-sse-5.c: Likewise.
* gcc.dg/i386-sse-8.c: Likewise.
* gcc.dg/simd-1.c: Likewise.
* gcc.dg/20030218-1.c: Likewise. Plus, do not declare
__ev64_opaque__ since the machine description provides it.
Index: c-common.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/c-common.c,v
retrieving revision 1.487
diff -u -r1.487 c-common.c
--- c-common.c 26 Feb 2004 01:24:37 -0000 1.487
+++ c-common.c 10 Mar 2004 10:25:28 -0000
@@ -1874,38 +1874,12 @@
if (mode == TYPE_MODE (build_pointer_type (integer_type_node)))
return unsignedp ? make_unsigned_type (mode) : make_signed_type (mode);
- switch (mode)
+ if (VECTOR_MODE_P (mode))
{
- case V16QImode:
From-SVN: r79544
2004-03-16 21:37:31 +01:00
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|
typedef int v4si __attribute__ ((vector_size (16)));
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2001-09-29 18:33:20 +02:00
|
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|
|
c-common.c (c_common_type_for_mode): Build vector types on demand.
gcc/ChangeLog
2004-03-16 Paolo Bonzini <bonzini@gnu.org>
* c-common.c (c_common_type_for_mode): Build vector types on
demand.
(handle_mode_attribute): Deprecate using the mode attribute
to create vector types. Fix indentation.
(vector_type_node_list): Remove.
(handle_vector_size_attribute): Create vector types on demand.
Strip a NON_LVALUE_EXPR from the attribute if there is one.
* c-typeck.c (comptypes): Make vector types compatible if they
have the same underlying mode.
(convert_for_assignment): Use comptypes to convert between
vector types.
* tree.c (build_common_tree_nodes_2): Do not create vector types.
* config/arm/arm.c (arm_init_iwmmxt_builtins): Create necessary
vector types.
* tree.h: Remove vector types.
* config/i386/i386.c (i386_init_mmx_sse_builtins): Likewise.
* config/rs6000/rs6000.c (rs6000_init_builtins): Likewise.
(V16QI_type_node, V2SI_type_node, V2SF_type_node, V4HI_type_node,
V4SI_type_node, V4SF_type_node, V8HI_type_node): New globals.
* doc/extend.texi (Vector Types): Document how to use the
vector_size attribute to create vectors, rather than mode.
* config/arm/mmintrin.h: Use vector_size attribute, not mode.
* config/i386/emmintrin.h: Likewise.
* config/i386/mmintrin.h: Likewise.
* config/i386/xmmintrin.h: Likewise.
* config/sh/ushmedia.h: Likwise.
testsuite/ChangeLog
2004-03-16 Paolo Bonzini <bonzini@gnu.org>
* g++.dg/eh/simd-1.C: Use vector_size attribute, not mode.
* g++.dg/eh/simd-2.C: Likewise.
* g++.dg/init/array10.C: Likewise.
* gcc.c-torture/compile/simd-1.c: Likewise.
* gcc.c-torture/compile/simd-2.c: Likewise.
* gcc.c-torture/compile/simd-3.c: Likewise.
* gcc.c-torture/compile/simd-4.c: Likewise.
* gcc.c-torture/compile/simd-6.c: Likewise.
* gcc.c-torture/execute/simd-1.c: Likewise.
* gcc.c-torture/execute/simd-2.c: Likewise.
* gcc.dg/compat/vector-defs.h: Likewise.
* gcc.dg/20020531-1.c: Likewise.
* gcc.dg/altivec-3.c: Likewise.
* gcc.dg/altivec-4.c: Likewise.
* gcc.dg/altivec-varargs-1.c: Likewise.
* testsuite/gcc.dg/compat/vector-defs.h: Likewise.
* gcc.dg/i386-mmx-3.c: Likewise.
* gcc.dg/i386-sse-4.c: Likewise.
* gcc.dg/i386-sse-5.c: Likewise.
* gcc.dg/i386-sse-8.c: Likewise.
* gcc.dg/simd-1.c: Likewise.
* gcc.dg/20030218-1.c: Likewise. Plus, do not declare
__ev64_opaque__ since the machine description provides it.
Index: c-common.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/c-common.c,v
retrieving revision 1.487
diff -u -r1.487 c-common.c
--- c-common.c 26 Feb 2004 01:24:37 -0000 1.487
+++ c-common.c 10 Mar 2004 10:25:28 -0000
@@ -1874,38 +1874,12 @@
if (mode == TYPE_MODE (build_pointer_type (integer_type_node)))
return unsignedp ? make_unsigned_type (mode) : make_signed_type (mode);
- switch (mode)
+ if (VECTOR_MODE_P (mode))
{
- case V16QImode:
From-SVN: r79544
2004-03-16 21:37:31 +01:00
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The @code{int} type specifies the base type, while the attribute specifies
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the vector size for the variable, measured in bytes. For example, the
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declaration above causes the compiler to set the mode for the @code{v4si}
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type to be 16 bytes wide and divided into @code{int} sized units. For
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a 32-bit @code{int} this means a vector of 4 units of 4 bytes, and the
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corresponding mode of @code{foo} will be @acronym{V4SI}.
|
2001-09-29 18:33:20 +02:00
|
|
|
|
c-common.c (c_common_type_for_mode): Build vector types on demand.
gcc/ChangeLog
2004-03-16 Paolo Bonzini <bonzini@gnu.org>
* c-common.c (c_common_type_for_mode): Build vector types on
demand.
(handle_mode_attribute): Deprecate using the mode attribute
to create vector types. Fix indentation.
(vector_type_node_list): Remove.
(handle_vector_size_attribute): Create vector types on demand.
Strip a NON_LVALUE_EXPR from the attribute if there is one.
* c-typeck.c (comptypes): Make vector types compatible if they
have the same underlying mode.
(convert_for_assignment): Use comptypes to convert between
vector types.
* tree.c (build_common_tree_nodes_2): Do not create vector types.
* config/arm/arm.c (arm_init_iwmmxt_builtins): Create necessary
vector types.
* tree.h: Remove vector types.
* config/i386/i386.c (i386_init_mmx_sse_builtins): Likewise.
* config/rs6000/rs6000.c (rs6000_init_builtins): Likewise.
(V16QI_type_node, V2SI_type_node, V2SF_type_node, V4HI_type_node,
V4SI_type_node, V4SF_type_node, V8HI_type_node): New globals.
* doc/extend.texi (Vector Types): Document how to use the
vector_size attribute to create vectors, rather than mode.
* config/arm/mmintrin.h: Use vector_size attribute, not mode.
* config/i386/emmintrin.h: Likewise.
* config/i386/mmintrin.h: Likewise.
* config/i386/xmmintrin.h: Likewise.
* config/sh/ushmedia.h: Likwise.
testsuite/ChangeLog
2004-03-16 Paolo Bonzini <bonzini@gnu.org>
* g++.dg/eh/simd-1.C: Use vector_size attribute, not mode.
* g++.dg/eh/simd-2.C: Likewise.
* g++.dg/init/array10.C: Likewise.
* gcc.c-torture/compile/simd-1.c: Likewise.
* gcc.c-torture/compile/simd-2.c: Likewise.
* gcc.c-torture/compile/simd-3.c: Likewise.
* gcc.c-torture/compile/simd-4.c: Likewise.
* gcc.c-torture/compile/simd-6.c: Likewise.
* gcc.c-torture/execute/simd-1.c: Likewise.
* gcc.c-torture/execute/simd-2.c: Likewise.
* gcc.dg/compat/vector-defs.h: Likewise.
* gcc.dg/20020531-1.c: Likewise.
* gcc.dg/altivec-3.c: Likewise.
* gcc.dg/altivec-4.c: Likewise.
* gcc.dg/altivec-varargs-1.c: Likewise.
* testsuite/gcc.dg/compat/vector-defs.h: Likewise.
* gcc.dg/i386-mmx-3.c: Likewise.
* gcc.dg/i386-sse-4.c: Likewise.
* gcc.dg/i386-sse-5.c: Likewise.
* gcc.dg/i386-sse-8.c: Likewise.
* gcc.dg/simd-1.c: Likewise.
* gcc.dg/20030218-1.c: Likewise. Plus, do not declare
__ev64_opaque__ since the machine description provides it.
Index: c-common.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/c-common.c,v
retrieving revision 1.487
diff -u -r1.487 c-common.c
--- c-common.c 26 Feb 2004 01:24:37 -0000 1.487
+++ c-common.c 10 Mar 2004 10:25:28 -0000
@@ -1874,38 +1874,12 @@
if (mode == TYPE_MODE (build_pointer_type (integer_type_node)))
return unsignedp ? make_unsigned_type (mode) : make_signed_type (mode);
- switch (mode)
+ if (VECTOR_MODE_P (mode))
{
- case V16QImode:
From-SVN: r79544
2004-03-16 21:37:31 +01:00
|
|
|
The @code{vector_size} attribute is only applicable to integral and
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|
float scalars, although arrays, pointers, and function return values
|
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|
are allowed in conjunction with this construct.
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All the basic integer types can be used as base types, both as signed
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and as unsigned: @code{char}, @code{short}, @code{int}, @code{long},
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@code{long long}. In addition, @code{float} and @code{double} can be
|
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|
|
used to build floating-point vector types.
|
2001-09-29 18:33:20 +02:00
|
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|
|
2002-06-18 03:35:47 +02:00
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|
Specifying a combination that is not valid for the current architecture
|
contrib.texi, [...]: Capitalize "gcc", "g++" and "g77" or mark up with appropriate markup.
* doc/contrib.texi, doc/extend.texi, doc/gcov.texi,
doc/install.texi, doc/invoke.texi, doc/makefile.texi,
doc/sourcebuild.texi, doc/tm.texi, doc/trouble.texi: Capitalize
"gcc", "g++" and "g77" or mark up with appropriate markup. Adjust
wording and grammar.
From-SVN: r79482
2004-03-14 23:29:38 +01:00
|
|
|
will cause GCC to synthesize the instructions using a narrower mode.
|
2002-06-18 03:35:47 +02:00
|
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|
For example, if you specify a variable of type @code{V4SI} and your
|
contrib.texi, [...]: Capitalize "gcc", "g++" and "g77" or mark up with appropriate markup.
* doc/contrib.texi, doc/extend.texi, doc/gcov.texi,
doc/install.texi, doc/invoke.texi, doc/makefile.texi,
doc/sourcebuild.texi, doc/tm.texi, doc/trouble.texi: Capitalize
"gcc", "g++" and "g77" or mark up with appropriate markup. Adjust
wording and grammar.
From-SVN: r79482
2004-03-14 23:29:38 +01:00
|
|
|
architecture does not allow for this specific SIMD type, GCC will
|
2002-06-18 03:35:47 +02:00
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|
produce code that uses 4 @code{SIs}.
|
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|
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|
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|
The types defined in this manner can be used with a subset of normal C
|
contrib.texi, [...]: Capitalize "gcc", "g++" and "g77" or mark up with appropriate markup.
* doc/contrib.texi, doc/extend.texi, doc/gcov.texi,
doc/install.texi, doc/invoke.texi, doc/makefile.texi,
doc/sourcebuild.texi, doc/tm.texi, doc/trouble.texi: Capitalize
"gcc", "g++" and "g77" or mark up with appropriate markup. Adjust
wording and grammar.
From-SVN: r79482
2004-03-14 23:29:38 +01:00
|
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|
operations. Currently, GCC will allow using the following operators
|
2003-12-10 23:33:47 +01:00
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on these types: @code{+, -, *, /, unary minus, ^, |, &, ~}@.
|
2002-06-18 03:35:47 +02:00
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The operations behave like C++ @code{valarrays}. Addition is defined as
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the addition of the corresponding elements of the operands. For
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example, in the code below, each of the 4 elements in @var{a} will be
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added to the corresponding 4 elements in @var{b} and the resulting
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vector will be stored in @var{c}.
|
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|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
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|
@smallexample
|
c-common.c (c_common_type_for_mode): Build vector types on demand.
gcc/ChangeLog
2004-03-16 Paolo Bonzini <bonzini@gnu.org>
* c-common.c (c_common_type_for_mode): Build vector types on
demand.
(handle_mode_attribute): Deprecate using the mode attribute
to create vector types. Fix indentation.
(vector_type_node_list): Remove.
(handle_vector_size_attribute): Create vector types on demand.
Strip a NON_LVALUE_EXPR from the attribute if there is one.
* c-typeck.c (comptypes): Make vector types compatible if they
have the same underlying mode.
(convert_for_assignment): Use comptypes to convert between
vector types.
* tree.c (build_common_tree_nodes_2): Do not create vector types.
* config/arm/arm.c (arm_init_iwmmxt_builtins): Create necessary
vector types.
* tree.h: Remove vector types.
* config/i386/i386.c (i386_init_mmx_sse_builtins): Likewise.
* config/rs6000/rs6000.c (rs6000_init_builtins): Likewise.
(V16QI_type_node, V2SI_type_node, V2SF_type_node, V4HI_type_node,
V4SI_type_node, V4SF_type_node, V8HI_type_node): New globals.
* doc/extend.texi (Vector Types): Document how to use the
vector_size attribute to create vectors, rather than mode.
* config/arm/mmintrin.h: Use vector_size attribute, not mode.
* config/i386/emmintrin.h: Likewise.
* config/i386/mmintrin.h: Likewise.
* config/i386/xmmintrin.h: Likewise.
* config/sh/ushmedia.h: Likwise.
testsuite/ChangeLog
2004-03-16 Paolo Bonzini <bonzini@gnu.org>
* g++.dg/eh/simd-1.C: Use vector_size attribute, not mode.
* g++.dg/eh/simd-2.C: Likewise.
* g++.dg/init/array10.C: Likewise.
* gcc.c-torture/compile/simd-1.c: Likewise.
* gcc.c-torture/compile/simd-2.c: Likewise.
* gcc.c-torture/compile/simd-3.c: Likewise.
* gcc.c-torture/compile/simd-4.c: Likewise.
* gcc.c-torture/compile/simd-6.c: Likewise.
* gcc.c-torture/execute/simd-1.c: Likewise.
* gcc.c-torture/execute/simd-2.c: Likewise.
* gcc.dg/compat/vector-defs.h: Likewise.
* gcc.dg/20020531-1.c: Likewise.
* gcc.dg/altivec-3.c: Likewise.
* gcc.dg/altivec-4.c: Likewise.
* gcc.dg/altivec-varargs-1.c: Likewise.
* testsuite/gcc.dg/compat/vector-defs.h: Likewise.
* gcc.dg/i386-mmx-3.c: Likewise.
* gcc.dg/i386-sse-4.c: Likewise.
* gcc.dg/i386-sse-5.c: Likewise.
* gcc.dg/i386-sse-8.c: Likewise.
* gcc.dg/simd-1.c: Likewise.
* gcc.dg/20030218-1.c: Likewise. Plus, do not declare
__ev64_opaque__ since the machine description provides it.
Index: c-common.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/c-common.c,v
retrieving revision 1.487
diff -u -r1.487 c-common.c
--- c-common.c 26 Feb 2004 01:24:37 -0000 1.487
+++ c-common.c 10 Mar 2004 10:25:28 -0000
@@ -1874,38 +1874,12 @@
if (mode == TYPE_MODE (build_pointer_type (integer_type_node)))
return unsignedp ? make_unsigned_type (mode) : make_signed_type (mode);
- switch (mode)
+ if (VECTOR_MODE_P (mode))
{
- case V16QImode:
From-SVN: r79544
2004-03-16 21:37:31 +01:00
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typedef int v4si __attribute__ ((vector_size (16)));
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2002-06-18 03:35:47 +02:00
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v4si a, b, c;
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c = a + b;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
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|
@end smallexample
|
2002-06-18 03:35:47 +02:00
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2003-12-10 23:33:47 +01:00
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Subtraction, multiplication, division, and the logical operations
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operate in a similar manner. Likewise, the result of using the unary
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minus or complement operators on a vector type is a vector whose
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elements are the negative or complemented values of the corresponding
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2002-06-18 03:35:47 +02:00
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elements in the operand.
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You can declare variables and use them in function calls and returns, as
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well as in assignments and some casts. You can specify a vector type as
|
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a return type for a function. Vector types can also be used as function
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arguments. It is possible to cast from one vector type to another,
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provided they are of the same size (in fact, you can also cast vectors
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to and from other datatypes of the same size).
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You cannot operate between vectors of different lengths or different
|
2003-01-27 11:53:36 +01:00
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signedness without a cast.
|
2002-06-18 03:35:47 +02:00
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A port that supports hardware vector operations, usually provides a set
|
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|
of built-in functions that can be used to operate on vectors. For
|
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|
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example, a function to add two vectors and multiply the result by a
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|
third could look like this:
|
2001-09-29 18:33:20 +02:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2001-09-29 18:33:20 +02:00
|
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|
v4si f (v4si a, v4si b, v4si c)
|
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@{
|
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|
v4si tmp = __builtin_addv4si (a, b);
|
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|
|
return __builtin_mulv4si (tmp, c);
|
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|
|
@}
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2001-09-29 18:33:20 +02:00
|
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|
2004-06-01 17:12:23 +02:00
|
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@node Offsetof
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@section Offsetof
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@findex __builtin_offsetof
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GCC implements for both C and C++ a syntactic extension to implement
|
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the @code{offsetof} macro.
|
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@smallexample
|
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primary:
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|
"__builtin_offsetof" "(" @code{typename} "," offsetof_member_designator ")"
|
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|
offsetof_member_designator:
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|
@code{identifier}
|
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|
|
| offsetof_member_designator "." @code{identifier}
|
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|
|
| offsetof_member_designator "[" @code{expr} "]"
|
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|
@end smallexample
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This extension is sufficient such that
|
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@smallexample
|
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#define offsetof(@var{type}, @var{member}) __builtin_offsetof (@var{type}, @var{member})
|
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@end smallexample
|
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|
is a suitable definition of the @code{offsetof} macro. In C++, @var{type}
|
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|
may be dependent. In either case, @var{member} may consist of a single
|
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|
identifier, or a sequence of member accesses and array references.
|
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|
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|
1998-12-29 12:36:22 +01:00
|
|
|
@node Other Builtins
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
@section Other built-in functions provided by GCC
|
c-tree.texi, [...]: Fix spelling and typos.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/install.texi, doc/invoke.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi: Fix spelling and typos.
Consistently use "built-in" and "bit-field". Minor logical markup
improvements.
* doc/gcc.1: Regenerate.
From-SVN: r43383
2001-06-15 00:51:18 +02:00
|
|
|
@cindex built-in functions
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex __builtin_isgreater
|
|
|
|
@findex __builtin_isgreaterequal
|
|
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|
@findex __builtin_isless
|
|
|
|
@findex __builtin_islessequal
|
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|
|
@findex __builtin_islessgreater
|
|
|
|
@findex __builtin_isunordered
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
@findex _Exit
|
|
|
|
@findex _exit
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex abort
|
|
|
|
@findex abs
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
@findex acos
|
|
|
|
@findex acosf
|
|
|
|
@findex acosh
|
|
|
|
@findex acoshf
|
|
|
|
@findex acoshl
|
|
|
|
@findex acosl
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex alloca
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
@findex asin
|
|
|
|
@findex asinf
|
|
|
|
@findex asinh
|
|
|
|
@findex asinhf
|
|
|
|
@findex asinhl
|
|
|
|
@findex asinl
|
builtins.def: Defome atan...
* builtins.def: Defome atan, atanf, atanl, tan, tanf and tanl
builtin functions (and their __builtin_* variants).
* builtins.c (mathfn_built_in): Handle tan{,f,l} and atan{,f,l}.
(expand_builtin): Don't expand tan{,f,l} or atan{,f,l} when not
optimizing.
* doc/extend.texi: Document new tan and atan builtins, and
their float and long double variants.
* gcc.dg/builtins-1.c: Add tests for tan and atan.
* gcc.dg/builtins-4.c: Add test for fmod.
From-SVN: r67137
2003-05-23 22:45:40 +02:00
|
|
|
@findex atan
|
builtin-types.def (BT_FN_FLOAT_FLOAT_FLOAT): New built-in type.
* builtin-types.def (BT_FN_FLOAT_FLOAT_FLOAT): New built-in type.
(BT_FN_LONG_DOUBLE_LONG_DOUBLE_LONG_DOUBLE): Likewise.
(BT_FN_DOUBLE_DOUBLE_DOUBLE): Likewise.
* builtins.def: Define pow, powf, powl, atan2, atan2f and atan2l
builtin functions (and their __builtin_* variants).
* builtins.c (mathfn_built_in): Handle missing log{,f,l} cases.
(expand_builtin): Don't expand log{,f,l}, pow{,f,l} or atan2{,f,l}
when not optimizing.
* doc/extend.texi: Document new pow and atan2 builtins, and
their float and long double variants. Realphabetize builtins.
* testsuite/gcc.dg/builtins-4.c: New test case.
From-SVN: r62551
2003-02-07 23:37:57 +01:00
|
|
|
@findex atan2
|
|
|
|
@findex atan2f
|
|
|
|
@findex atan2l
|
builtins.def: Defome atan...
* builtins.def: Defome atan, atanf, atanl, tan, tanf and tanl
builtin functions (and their __builtin_* variants).
* builtins.c (mathfn_built_in): Handle tan{,f,l} and atan{,f,l}.
(expand_builtin): Don't expand tan{,f,l} or atan{,f,l} when not
optimizing.
* doc/extend.texi: Document new tan and atan builtins, and
their float and long double variants.
* gcc.dg/builtins-1.c: Add tests for tan and atan.
* gcc.dg/builtins-4.c: Add test for fmod.
From-SVN: r67137
2003-05-23 22:45:40 +02:00
|
|
|
@findex atanf
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
@findex atanh
|
|
|
|
@findex atanhf
|
|
|
|
@findex atanhl
|
builtins.def: Defome atan...
* builtins.def: Defome atan, atanf, atanl, tan, tanf and tanl
builtin functions (and their __builtin_* variants).
* builtins.c (mathfn_built_in): Handle tan{,f,l} and atan{,f,l}.
(expand_builtin): Don't expand tan{,f,l} or atan{,f,l} when not
optimizing.
* doc/extend.texi: Document new tan and atan builtins, and
their float and long double variants.
* gcc.dg/builtins-1.c: Add tests for tan and atan.
* gcc.dg/builtins-4.c: Add test for fmod.
From-SVN: r67137
2003-05-23 22:45:40 +02:00
|
|
|
@findex atanl
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex bcmp
|
|
|
|
@findex bzero
|
builtins.def (BUILT_IN_CABS, [...]): New builtins representing ISO C99's cabs, cabsf and cabsl.
* builtins.def (BUILT_IN_CABS, BUILT_IN_CABSF, BUILT_IN_CABSL):
New builtins representing ISO C99's cabs, cabsf and cabsl.
* builtins.c (expand_builtin_fabs): New function.
(expand_builtin_cabs): New function.
(expand_builtin): Expand BUILT_IN_FABS{,F,L} and BUILT_IN_CABS{,F,L}
using expand_builtin_fabs and expand_builtin_cabs respectively.
* doc/extend.texi: Document new cabs, cabsf and cabsl builtins.
* gcc.dg/builtins-16.c: New test case.
From-SVN: r67368
2003-06-03 13:27:23 +02:00
|
|
|
@findex cabs
|
|
|
|
@findex cabsf
|
|
|
|
@findex cabsl
|
builtin-types.def (BT_FN_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE, [...]): New.
* builtin-types.def
(BT_FN_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE,
BT_FN_COMPLEX_DOUBLE_COMPLEX_DOUBLE_COMPLEX_DOUBLE,
BT_FN_COMPLEX_FLOAT_COMPLEX_FLOAT_COMPLEX_FLOAT): New.
* builtins.def (BUILT_IN_CACOS, BUILT_IN_CACOSF, BUILT_IN_CACOSH,
BUILT_IN_CACOSHF, BUILT_IN_CACOSHL, BUILT_IN_CACOSL,
BUILT_IN_CARG, BUILT_IN_CARGF, BUILT_IN_CARGL, BUILT_IN_CASIN,
BUILT_IN_CASINF, BUILT_IN_CASINH, BUILT_IN_CASINHF,
BUILT_IN_CASINHL, BUILT_IN_CASINL, BUILT_IN_CATAN,
BUILT_IN_CATANF, BUILT_IN_CATANH, BUILT_IN_CATANHF,
BUILT_IN_CATANHL, BUILT_IN_CATANL, BUILT_IN_CCOS, BUILT_IN_CCOSF,
BUILT_IN_CCOSH, BUILT_IN_CCOSHF, BUILT_IN_CCOSHL, BUILT_IN_CCOSL,
BUILT_IN_CEXP, BUILT_IN_CEXPF, BUILT_IN_CEXPL, BUILT_IN_CPOW,
BUILT_IN_CPOWF, BUILT_IN_CPOWL, BUILT_IN_CPROJ, BUILT_IN_CPROJF,
BUILT_IN_CPROJL, BUILT_IN_CSIN, BUILT_IN_CSINF, BUILT_IN_CSINH,
BUILT_IN_CSINHF, BUILT_IN_CSINHL, BUILT_IN_CSINL, BUILT_IN_CSQRT,
BUILT_IN_CSQRTF, BUILT_IN_CSQRTL, BUILT_IN_CTAN, BUILT_IN_CTANF,
BUILT_IN_CTANH, BUILT_IN_CTANHF, BUILT_IN_CTANHL, BUILT_IN_CTANL):
New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more _Complex tests.
* gcc.dg/torture/builtin-attr-1.c: Likewise.
From-SVN: r71226
2003-09-09 05:29:18 +02:00
|
|
|
@findex cacos
|
|
|
|
@findex cacosf
|
|
|
|
@findex cacosh
|
|
|
|
@findex cacoshf
|
|
|
|
@findex cacoshl
|
|
|
|
@findex cacosl
|
2003-04-14 04:55:31 +02:00
|
|
|
@findex calloc
|
builtin-types.def (BT_FN_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE, [...]): New.
* builtin-types.def
(BT_FN_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE,
BT_FN_COMPLEX_DOUBLE_COMPLEX_DOUBLE_COMPLEX_DOUBLE,
BT_FN_COMPLEX_FLOAT_COMPLEX_FLOAT_COMPLEX_FLOAT): New.
* builtins.def (BUILT_IN_CACOS, BUILT_IN_CACOSF, BUILT_IN_CACOSH,
BUILT_IN_CACOSHF, BUILT_IN_CACOSHL, BUILT_IN_CACOSL,
BUILT_IN_CARG, BUILT_IN_CARGF, BUILT_IN_CARGL, BUILT_IN_CASIN,
BUILT_IN_CASINF, BUILT_IN_CASINH, BUILT_IN_CASINHF,
BUILT_IN_CASINHL, BUILT_IN_CASINL, BUILT_IN_CATAN,
BUILT_IN_CATANF, BUILT_IN_CATANH, BUILT_IN_CATANHF,
BUILT_IN_CATANHL, BUILT_IN_CATANL, BUILT_IN_CCOS, BUILT_IN_CCOSF,
BUILT_IN_CCOSH, BUILT_IN_CCOSHF, BUILT_IN_CCOSHL, BUILT_IN_CCOSL,
BUILT_IN_CEXP, BUILT_IN_CEXPF, BUILT_IN_CEXPL, BUILT_IN_CPOW,
BUILT_IN_CPOWF, BUILT_IN_CPOWL, BUILT_IN_CPROJ, BUILT_IN_CPROJF,
BUILT_IN_CPROJL, BUILT_IN_CSIN, BUILT_IN_CSINF, BUILT_IN_CSINH,
BUILT_IN_CSINHF, BUILT_IN_CSINHL, BUILT_IN_CSINL, BUILT_IN_CSQRT,
BUILT_IN_CSQRTF, BUILT_IN_CSQRTL, BUILT_IN_CTAN, BUILT_IN_CTANF,
BUILT_IN_CTANH, BUILT_IN_CTANHF, BUILT_IN_CTANHL, BUILT_IN_CTANL):
New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more _Complex tests.
* gcc.dg/torture/builtin-attr-1.c: Likewise.
From-SVN: r71226
2003-09-09 05:29:18 +02:00
|
|
|
@findex carg
|
|
|
|
@findex cargf
|
|
|
|
@findex cargl
|
|
|
|
@findex casin
|
|
|
|
@findex casinf
|
|
|
|
@findex casinh
|
|
|
|
@findex casinhf
|
|
|
|
@findex casinhl
|
|
|
|
@findex casinl
|
|
|
|
@findex catan
|
|
|
|
@findex catanf
|
|
|
|
@findex catanh
|
|
|
|
@findex catanhf
|
|
|
|
@findex catanhl
|
|
|
|
@findex catanl
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
@findex cbrt
|
|
|
|
@findex cbrtf
|
|
|
|
@findex cbrtl
|
builtin-types.def (BT_FN_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE, [...]): New.
* builtin-types.def
(BT_FN_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE,
BT_FN_COMPLEX_DOUBLE_COMPLEX_DOUBLE_COMPLEX_DOUBLE,
BT_FN_COMPLEX_FLOAT_COMPLEX_FLOAT_COMPLEX_FLOAT): New.
* builtins.def (BUILT_IN_CACOS, BUILT_IN_CACOSF, BUILT_IN_CACOSH,
BUILT_IN_CACOSHF, BUILT_IN_CACOSHL, BUILT_IN_CACOSL,
BUILT_IN_CARG, BUILT_IN_CARGF, BUILT_IN_CARGL, BUILT_IN_CASIN,
BUILT_IN_CASINF, BUILT_IN_CASINH, BUILT_IN_CASINHF,
BUILT_IN_CASINHL, BUILT_IN_CASINL, BUILT_IN_CATAN,
BUILT_IN_CATANF, BUILT_IN_CATANH, BUILT_IN_CATANHF,
BUILT_IN_CATANHL, BUILT_IN_CATANL, BUILT_IN_CCOS, BUILT_IN_CCOSF,
BUILT_IN_CCOSH, BUILT_IN_CCOSHF, BUILT_IN_CCOSHL, BUILT_IN_CCOSL,
BUILT_IN_CEXP, BUILT_IN_CEXPF, BUILT_IN_CEXPL, BUILT_IN_CPOW,
BUILT_IN_CPOWF, BUILT_IN_CPOWL, BUILT_IN_CPROJ, BUILT_IN_CPROJF,
BUILT_IN_CPROJL, BUILT_IN_CSIN, BUILT_IN_CSINF, BUILT_IN_CSINH,
BUILT_IN_CSINHF, BUILT_IN_CSINHL, BUILT_IN_CSINL, BUILT_IN_CSQRT,
BUILT_IN_CSQRTF, BUILT_IN_CSQRTL, BUILT_IN_CTAN, BUILT_IN_CTANF,
BUILT_IN_CTANH, BUILT_IN_CTANHF, BUILT_IN_CTANHL, BUILT_IN_CTANL):
New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more _Complex tests.
* gcc.dg/torture/builtin-attr-1.c: Likewise.
From-SVN: r71226
2003-09-09 05:29:18 +02:00
|
|
|
@findex ccos
|
|
|
|
@findex ccosf
|
|
|
|
@findex ccosh
|
|
|
|
@findex ccoshf
|
|
|
|
@findex ccoshl
|
|
|
|
@findex ccosl
|
builtins.def (DEF_LIB_ALWAYS_BUILTIN, [...]): Delete.
* builtins.def (DEF_LIB_ALWAYS_BUILTIN, DEF_UNUSED_BUILTIN): Delete.
(abs, labs, fabs, fabsf, fabsl, abort, exit, _exit, _Exit): Use
the appropriate macro to define built-in function.
(fmod,fmodf,fmodl): New built-in functions.
* java/decl.c (java_init_decl_processing): Get soft_fmod_node from
built_in_decls[BUILT_IN_FMOD] rather than define it ourselves.
* doc/extend.texi (fmod,fmodf,fmodl): Document new built-ins.
From-SVN: r63445
2003-02-26 04:02:14 +01:00
|
|
|
@findex ceil
|
|
|
|
@findex ceilf
|
|
|
|
@findex ceill
|
builtin-types.def (BT_FN_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE, [...]): New.
* builtin-types.def
(BT_FN_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE,
BT_FN_COMPLEX_DOUBLE_COMPLEX_DOUBLE_COMPLEX_DOUBLE,
BT_FN_COMPLEX_FLOAT_COMPLEX_FLOAT_COMPLEX_FLOAT): New.
* builtins.def (BUILT_IN_CACOS, BUILT_IN_CACOSF, BUILT_IN_CACOSH,
BUILT_IN_CACOSHF, BUILT_IN_CACOSHL, BUILT_IN_CACOSL,
BUILT_IN_CARG, BUILT_IN_CARGF, BUILT_IN_CARGL, BUILT_IN_CASIN,
BUILT_IN_CASINF, BUILT_IN_CASINH, BUILT_IN_CASINHF,
BUILT_IN_CASINHL, BUILT_IN_CASINL, BUILT_IN_CATAN,
BUILT_IN_CATANF, BUILT_IN_CATANH, BUILT_IN_CATANHF,
BUILT_IN_CATANHL, BUILT_IN_CATANL, BUILT_IN_CCOS, BUILT_IN_CCOSF,
BUILT_IN_CCOSH, BUILT_IN_CCOSHF, BUILT_IN_CCOSHL, BUILT_IN_CCOSL,
BUILT_IN_CEXP, BUILT_IN_CEXPF, BUILT_IN_CEXPL, BUILT_IN_CPOW,
BUILT_IN_CPOWF, BUILT_IN_CPOWL, BUILT_IN_CPROJ, BUILT_IN_CPROJF,
BUILT_IN_CPROJL, BUILT_IN_CSIN, BUILT_IN_CSINF, BUILT_IN_CSINH,
BUILT_IN_CSINHF, BUILT_IN_CSINHL, BUILT_IN_CSINL, BUILT_IN_CSQRT,
BUILT_IN_CSQRTF, BUILT_IN_CSQRTL, BUILT_IN_CTAN, BUILT_IN_CTANF,
BUILT_IN_CTANH, BUILT_IN_CTANHF, BUILT_IN_CTANHL, BUILT_IN_CTANL):
New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more _Complex tests.
* gcc.dg/torture/builtin-attr-1.c: Likewise.
From-SVN: r71226
2003-09-09 05:29:18 +02:00
|
|
|
@findex cexp
|
|
|
|
@findex cexpf
|
|
|
|
@findex cexpl
|
builtins.def (BUILT_IN_CONJ, [...]): Define.
* builtins.def (BUILT_IN_CONJ, BUILT_IN_CREAL, BUILT_IN_CIMAG):
Define.
* builtins.c (expand_builtin): Abort on BUILT_IN_CONJ,
BUILT_IN_CREAL and BUILT_IN_CIMAG.
* c-common.c (c_common_nodes_and_builtins): Create builtin conjf,
conj, conjl, crealf, creal, creall, cimagf, cimag and cimagl.
(expand_tree_builtin): Handle BUILT_IN_CONJ, BUILT_IN_CREAL and
BUILT_IN_CIMAG.
* extend.texi: Document these builtins.
testsuite:
* gcc.c-torture/execute/builtin-complex-1.c: New test.
From-SVN: r38716
2001-01-05 19:24:08 +01:00
|
|
|
@findex cimag
|
|
|
|
@findex cimagf
|
|
|
|
@findex cimagl
|
|
|
|
@findex conj
|
|
|
|
@findex conjf
|
|
|
|
@findex conjl
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
@findex copysign
|
|
|
|
@findex copysignf
|
|
|
|
@findex copysignl
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex cos
|
|
|
|
@findex cosf
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
@findex cosh
|
|
|
|
@findex coshf
|
|
|
|
@findex coshl
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex cosl
|
builtin-types.def (BT_FN_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE, [...]): New.
* builtin-types.def
(BT_FN_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE,
BT_FN_COMPLEX_DOUBLE_COMPLEX_DOUBLE_COMPLEX_DOUBLE,
BT_FN_COMPLEX_FLOAT_COMPLEX_FLOAT_COMPLEX_FLOAT): New.
* builtins.def (BUILT_IN_CACOS, BUILT_IN_CACOSF, BUILT_IN_CACOSH,
BUILT_IN_CACOSHF, BUILT_IN_CACOSHL, BUILT_IN_CACOSL,
BUILT_IN_CARG, BUILT_IN_CARGF, BUILT_IN_CARGL, BUILT_IN_CASIN,
BUILT_IN_CASINF, BUILT_IN_CASINH, BUILT_IN_CASINHF,
BUILT_IN_CASINHL, BUILT_IN_CASINL, BUILT_IN_CATAN,
BUILT_IN_CATANF, BUILT_IN_CATANH, BUILT_IN_CATANHF,
BUILT_IN_CATANHL, BUILT_IN_CATANL, BUILT_IN_CCOS, BUILT_IN_CCOSF,
BUILT_IN_CCOSH, BUILT_IN_CCOSHF, BUILT_IN_CCOSHL, BUILT_IN_CCOSL,
BUILT_IN_CEXP, BUILT_IN_CEXPF, BUILT_IN_CEXPL, BUILT_IN_CPOW,
BUILT_IN_CPOWF, BUILT_IN_CPOWL, BUILT_IN_CPROJ, BUILT_IN_CPROJF,
BUILT_IN_CPROJL, BUILT_IN_CSIN, BUILT_IN_CSINF, BUILT_IN_CSINH,
BUILT_IN_CSINHF, BUILT_IN_CSINHL, BUILT_IN_CSINL, BUILT_IN_CSQRT,
BUILT_IN_CSQRTF, BUILT_IN_CSQRTL, BUILT_IN_CTAN, BUILT_IN_CTANF,
BUILT_IN_CTANH, BUILT_IN_CTANHF, BUILT_IN_CTANHL, BUILT_IN_CTANL):
New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more _Complex tests.
* gcc.dg/torture/builtin-attr-1.c: Likewise.
From-SVN: r71226
2003-09-09 05:29:18 +02:00
|
|
|
@findex cpow
|
|
|
|
@findex cpowf
|
|
|
|
@findex cpowl
|
|
|
|
@findex cproj
|
|
|
|
@findex cprojf
|
|
|
|
@findex cprojl
|
builtins.def (BUILT_IN_CONJ, [...]): Define.
* builtins.def (BUILT_IN_CONJ, BUILT_IN_CREAL, BUILT_IN_CIMAG):
Define.
* builtins.c (expand_builtin): Abort on BUILT_IN_CONJ,
BUILT_IN_CREAL and BUILT_IN_CIMAG.
* c-common.c (c_common_nodes_and_builtins): Create builtin conjf,
conj, conjl, crealf, creal, creall, cimagf, cimag and cimagl.
(expand_tree_builtin): Handle BUILT_IN_CONJ, BUILT_IN_CREAL and
BUILT_IN_CIMAG.
* extend.texi: Document these builtins.
testsuite:
* gcc.c-torture/execute/builtin-complex-1.c: New test.
From-SVN: r38716
2001-01-05 19:24:08 +01:00
|
|
|
@findex creal
|
|
|
|
@findex crealf
|
|
|
|
@findex creall
|
builtin-types.def (BT_FN_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE, [...]): New.
* builtin-types.def
(BT_FN_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE,
BT_FN_COMPLEX_DOUBLE_COMPLEX_DOUBLE_COMPLEX_DOUBLE,
BT_FN_COMPLEX_FLOAT_COMPLEX_FLOAT_COMPLEX_FLOAT): New.
* builtins.def (BUILT_IN_CACOS, BUILT_IN_CACOSF, BUILT_IN_CACOSH,
BUILT_IN_CACOSHF, BUILT_IN_CACOSHL, BUILT_IN_CACOSL,
BUILT_IN_CARG, BUILT_IN_CARGF, BUILT_IN_CARGL, BUILT_IN_CASIN,
BUILT_IN_CASINF, BUILT_IN_CASINH, BUILT_IN_CASINHF,
BUILT_IN_CASINHL, BUILT_IN_CASINL, BUILT_IN_CATAN,
BUILT_IN_CATANF, BUILT_IN_CATANH, BUILT_IN_CATANHF,
BUILT_IN_CATANHL, BUILT_IN_CATANL, BUILT_IN_CCOS, BUILT_IN_CCOSF,
BUILT_IN_CCOSH, BUILT_IN_CCOSHF, BUILT_IN_CCOSHL, BUILT_IN_CCOSL,
BUILT_IN_CEXP, BUILT_IN_CEXPF, BUILT_IN_CEXPL, BUILT_IN_CPOW,
BUILT_IN_CPOWF, BUILT_IN_CPOWL, BUILT_IN_CPROJ, BUILT_IN_CPROJF,
BUILT_IN_CPROJL, BUILT_IN_CSIN, BUILT_IN_CSINF, BUILT_IN_CSINH,
BUILT_IN_CSINHF, BUILT_IN_CSINHL, BUILT_IN_CSINL, BUILT_IN_CSQRT,
BUILT_IN_CSQRTF, BUILT_IN_CSQRTL, BUILT_IN_CTAN, BUILT_IN_CTANF,
BUILT_IN_CTANH, BUILT_IN_CTANHF, BUILT_IN_CTANHL, BUILT_IN_CTANL):
New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more _Complex tests.
* gcc.dg/torture/builtin-attr-1.c: Likewise.
From-SVN: r71226
2003-09-09 05:29:18 +02:00
|
|
|
@findex csin
|
|
|
|
@findex csinf
|
|
|
|
@findex csinh
|
|
|
|
@findex csinhf
|
|
|
|
@findex csinhl
|
|
|
|
@findex csinl
|
|
|
|
@findex csqrt
|
|
|
|
@findex csqrtf
|
|
|
|
@findex csqrtl
|
|
|
|
@findex ctan
|
|
|
|
@findex ctanf
|
|
|
|
@findex ctanh
|
|
|
|
@findex ctanhf
|
|
|
|
@findex ctanhl
|
|
|
|
@findex ctanl
|
builtin-types.def (BT_SSIZE): New primitive type.
* builtin-types.def (BT_SSIZE): New primitive type.
(BT_FN_INT_PTR_CONST_STRING_VALIST_ARG,
BT_FN_STRING_CONST_STRING_CONST_STRING_INT,
BT_FN_SIZE_STRING_SIZE_CONST_STRING_CONST_PTR,
BT_FN_SSIZE_STRING_SIZE_CONST_STRING_VAR): New function types.
* builtins.def (BUILT_IN_DCGETTEXT, BUILT_IN_DGETTEXT,
BUILT_IN_FSCANF, BUILT_IN_GETTEXT, BUILT_IN_STRFMON,
BUILT_IN_STRFTIME, BUILT_IN_VFPRINTF, BUILT_IN_VFSCANF): New builtins.
* builtin-attrs.def: Remove DEF_FN_ATTR construct and the last
few functions that define default attributes using it.
* c-common.c (c_common_insert_default_attributes): Do nothing.
* doc/extend.texi: Document these "new" builtins.
From-SVN: r70113
2003-08-03 05:23:18 +02:00
|
|
|
@findex dcgettext
|
|
|
|
@findex dgettext
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
@findex drem
|
|
|
|
@findex dremf
|
|
|
|
@findex dreml
|
builtin-types.def (BT_FN_FLOAT_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_FLOAT_INT_FLOAT,
BT_FN_DOUBLE_INT_DOUBLE, BT_FN_LONGDOUBLE_INT_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ERF, BUILT_IN_ERFC, BUILT_IN_ERFCF,
BUILT_IN_ERFCL, BUILT_IN_ERFF, BUILT_IN_ERFL, BUILT_IN_GAMMA,
BUILT_IN_GAMMAF, BUILT_IN_GAMMAL, BUILT_IN_J0, BUILT_IN_J0F,
BUILT_IN_J0L, BUILT_IN_J1, BUILT_IN_J1F, BUILT_IN_J1L,
BUILT_IN_JN, BUILT_IN_JNF, BUILT_IN_JNL, BUILT_IN_LGAMMA,
BUILT_IN_LGAMMAF, BUILT_IN_LGAMMAL, BUILT_IN_SIGNIFICAND,
BUILT_IN_SIGNIFICANDF, BUILT_IN_SIGNIFICANDL, BUILT_IN_TGAMMA,
BUILT_IN_TGAMMAF, BUILT_IN_TGAMMAL, BUILT_IN_Y0, BUILT_IN_Y0F,
BUILT_IN_Y0L, BUILT_IN_Y1, BUILT_IN_Y1F, BUILT_IN_Y1L,
BUILT_IN_YN, BUILT_IN_YNF, BUILT_IN_YNL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add new cases.
* gcc.dg/torture/builtin-attr-1.c: Likewise.
From-SVN: r70889
2003-08-28 23:25:22 +02:00
|
|
|
@findex erf
|
|
|
|
@findex erfc
|
|
|
|
@findex erfcf
|
|
|
|
@findex erfcl
|
|
|
|
@findex erff
|
|
|
|
@findex erfl
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex exit
|
2002-08-04 01:21:31 +02:00
|
|
|
@findex exp
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
@findex exp10
|
|
|
|
@findex exp10f
|
|
|
|
@findex exp10l
|
|
|
|
@findex exp2
|
|
|
|
@findex exp2f
|
|
|
|
@findex exp2l
|
2002-08-04 01:21:31 +02:00
|
|
|
@findex expf
|
|
|
|
@findex expl
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
@findex expm1
|
|
|
|
@findex expm1f
|
|
|
|
@findex expm1l
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex fabs
|
|
|
|
@findex fabsf
|
|
|
|
@findex fabsl
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
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@findex fdim
|
|
|
|
@findex fdimf
|
|
|
|
@findex fdiml
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex ffs
|
builtins.def (DEF_LIB_ALWAYS_BUILTIN, [...]): Delete.
* builtins.def (DEF_LIB_ALWAYS_BUILTIN, DEF_UNUSED_BUILTIN): Delete.
(abs, labs, fabs, fabsf, fabsl, abort, exit, _exit, _Exit): Use
the appropriate macro to define built-in function.
(fmod,fmodf,fmodl): New built-in functions.
* java/decl.c (java_init_decl_processing): Get soft_fmod_node from
built_in_decls[BUILT_IN_FMOD] rather than define it ourselves.
* doc/extend.texi (fmod,fmodf,fmodl): Document new built-ins.
From-SVN: r63445
2003-02-26 04:02:14 +01:00
|
|
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@findex floor
|
|
|
|
@findex floorf
|
|
|
|
@findex floorl
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
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|
@findex fma
|
|
|
|
@findex fmaf
|
|
|
|
@findex fmal
|
|
|
|
@findex fmax
|
|
|
|
@findex fmaxf
|
|
|
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@findex fmaxl
|
|
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@findex fmin
|
|
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@findex fminf
|
|
|
|
@findex fminl
|
builtins.def (DEF_LIB_ALWAYS_BUILTIN, [...]): Delete.
* builtins.def (DEF_LIB_ALWAYS_BUILTIN, DEF_UNUSED_BUILTIN): Delete.
(abs, labs, fabs, fabsf, fabsl, abort, exit, _exit, _Exit): Use
the appropriate macro to define built-in function.
(fmod,fmodf,fmodl): New built-in functions.
* java/decl.c (java_init_decl_processing): Get soft_fmod_node from
built_in_decls[BUILT_IN_FMOD] rather than define it ourselves.
* doc/extend.texi (fmod,fmodf,fmodl): Document new built-ins.
From-SVN: r63445
2003-02-26 04:02:14 +01:00
|
|
|
@findex fmod
|
|
|
|
@findex fmodf
|
|
|
|
@findex fmodl
|
2001-01-08 00:15:47 +01:00
|
|
|
@findex fprintf
|
2001-12-21 03:36:37 +01:00
|
|
|
@findex fprintf_unlocked
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex fputs
|
2001-12-21 03:36:37 +01:00
|
|
|
@findex fputs_unlocked
|
builtin-types.def (BT_INT_PTR, [...]): New.
* builtin-types.def (BT_INT_PTR, BT_FLOAT_PTR, BT_DOUBLE_PTR,
BT_LONGDOUBLE_PTR, BT_FN_FLOAT_FLOAT_FLOATPTR,
BT_FN_DOUBLE_DOUBLE_DOUBLEPTR,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLEPTR,
BT_FN_FLOAT_FLOAT_INTPTR, BT_FN_DOUBLE_DOUBLE_INTPTR,
BT_FN_LONGDOUBLE_LONGDOUBLE_INTPTR,
BT_FN_FLOAT_FLOAT_FLOAT_INTPTR, BT_FN_DOUBLE_DOUBLE_DOUBLE_INTPTR,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_INTPTR,
BT_FN_VOID_FLOAT_FLOATPTR_FLOATPTR,
BT_FN_VOID_DOUBLE_DOUBLEPTR_DOUBLEPTR,
BT_FN_VOID_LONGDOUBLE_LONGDOUBLEPTR_LONGDOUBLEPTR): New.
* builtins.def (BUILT_IN_FREXP, BUILT_IN_FREXPF, BUILT_IN_FREXPL,
BUILT_IN_MODF, BUILT_IN_MODFF, BUILT_IN_MODFL, BUILT_IN_REMQUO,
BUILT_IN_REMQUOF, BUILT_IN_REMQUOL, BUILT_IN_SINCOS,
BUILT_IN_SINCOSF, BUILT_IN_SINCOSL): New.
* tree.c: Assign new type_nodes.
* tree.h (tree_index): Add TI_FLOAT_PTR_TYPE, TI_DOUBLE_PTR_TYPE,
TI_LONG_DOUBLE_PTR_TYPE, TI_INTEGER_PTR_TYPE.
(float_ptr_type_node, double_ptr_type_node,
long_double_ptr_type_node, integer_ptr_type_node): New type_nodes.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add new builtin cases.
From-SVN: r70890
2003-08-29 00:00:45 +02:00
|
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|
@findex frexp
|
|
|
|
@findex frexpf
|
|
|
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@findex frexpl
|
builtin-types.def (BT_SSIZE): New primitive type.
* builtin-types.def (BT_SSIZE): New primitive type.
(BT_FN_INT_PTR_CONST_STRING_VALIST_ARG,
BT_FN_STRING_CONST_STRING_CONST_STRING_INT,
BT_FN_SIZE_STRING_SIZE_CONST_STRING_CONST_PTR,
BT_FN_SSIZE_STRING_SIZE_CONST_STRING_VAR): New function types.
* builtins.def (BUILT_IN_DCGETTEXT, BUILT_IN_DGETTEXT,
BUILT_IN_FSCANF, BUILT_IN_GETTEXT, BUILT_IN_STRFMON,
BUILT_IN_STRFTIME, BUILT_IN_VFPRINTF, BUILT_IN_VFSCANF): New builtins.
* builtin-attrs.def: Remove DEF_FN_ATTR construct and the last
few functions that define default attributes using it.
* c-common.c (c_common_insert_default_attributes): Do nothing.
* doc/extend.texi: Document these "new" builtins.
From-SVN: r70113
2003-08-03 05:23:18 +02:00
|
|
|
@findex fscanf
|
builtin-types.def (BT_FN_FLOAT_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_FLOAT_INT_FLOAT,
BT_FN_DOUBLE_INT_DOUBLE, BT_FN_LONGDOUBLE_INT_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ERF, BUILT_IN_ERFC, BUILT_IN_ERFCF,
BUILT_IN_ERFCL, BUILT_IN_ERFF, BUILT_IN_ERFL, BUILT_IN_GAMMA,
BUILT_IN_GAMMAF, BUILT_IN_GAMMAL, BUILT_IN_J0, BUILT_IN_J0F,
BUILT_IN_J0L, BUILT_IN_J1, BUILT_IN_J1F, BUILT_IN_J1L,
BUILT_IN_JN, BUILT_IN_JNF, BUILT_IN_JNL, BUILT_IN_LGAMMA,
BUILT_IN_LGAMMAF, BUILT_IN_LGAMMAL, BUILT_IN_SIGNIFICAND,
BUILT_IN_SIGNIFICANDF, BUILT_IN_SIGNIFICANDL, BUILT_IN_TGAMMA,
BUILT_IN_TGAMMAF, BUILT_IN_TGAMMAL, BUILT_IN_Y0, BUILT_IN_Y0F,
BUILT_IN_Y0L, BUILT_IN_Y1, BUILT_IN_Y1F, BUILT_IN_Y1L,
BUILT_IN_YN, BUILT_IN_YNF, BUILT_IN_YNL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add new cases.
* gcc.dg/torture/builtin-attr-1.c: Likewise.
From-SVN: r70889
2003-08-28 23:25:22 +02:00
|
|
|
@findex gamma
|
|
|
|
@findex gammaf
|
|
|
|
@findex gammal
|
builtin-types.def (BT_SSIZE): New primitive type.
* builtin-types.def (BT_SSIZE): New primitive type.
(BT_FN_INT_PTR_CONST_STRING_VALIST_ARG,
BT_FN_STRING_CONST_STRING_CONST_STRING_INT,
BT_FN_SIZE_STRING_SIZE_CONST_STRING_CONST_PTR,
BT_FN_SSIZE_STRING_SIZE_CONST_STRING_VAR): New function types.
* builtins.def (BUILT_IN_DCGETTEXT, BUILT_IN_DGETTEXT,
BUILT_IN_FSCANF, BUILT_IN_GETTEXT, BUILT_IN_STRFMON,
BUILT_IN_STRFTIME, BUILT_IN_VFPRINTF, BUILT_IN_VFSCANF): New builtins.
* builtin-attrs.def: Remove DEF_FN_ATTR construct and the last
few functions that define default attributes using it.
* c-common.c (c_common_insert_default_attributes): Do nothing.
* doc/extend.texi: Document these "new" builtins.
From-SVN: r70113
2003-08-03 05:23:18 +02:00
|
|
|
@findex gettext
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
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@findex hypot
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@findex hypotf
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@findex hypotl
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@findex ilogb
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@findex ilogbf
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@findex ilogbl
|
2000-12-01 23:35:50 +01:00
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@findex imaxabs
|
2000-11-13 03:14:05 +01:00
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@findex index
|
2004-03-25 18:55:13 +01:00
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@findex isalnum
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@findex isalpha
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@findex isascii
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@findex isblank
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@findex iscntrl
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@findex isdigit
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@findex isgraph
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@findex islower
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@findex isprint
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@findex ispunct
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@findex isspace
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@findex isupper
|
2004-03-27 06:29:40 +01:00
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@findex iswalnum
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@findex iswalpha
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@findex iswblank
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@findex iswcntrl
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@findex iswdigit
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@findex iswgraph
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@findex iswlower
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@findex iswprint
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@findex iswpunct
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@findex iswspace
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@findex iswupper
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@findex iswxdigit
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2004-03-25 18:55:13 +01:00
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@findex isxdigit
|
builtin-types.def (BT_FN_FLOAT_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_FLOAT_INT_FLOAT,
BT_FN_DOUBLE_INT_DOUBLE, BT_FN_LONGDOUBLE_INT_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ERF, BUILT_IN_ERFC, BUILT_IN_ERFCF,
BUILT_IN_ERFCL, BUILT_IN_ERFF, BUILT_IN_ERFL, BUILT_IN_GAMMA,
BUILT_IN_GAMMAF, BUILT_IN_GAMMAL, BUILT_IN_J0, BUILT_IN_J0F,
BUILT_IN_J0L, BUILT_IN_J1, BUILT_IN_J1F, BUILT_IN_J1L,
BUILT_IN_JN, BUILT_IN_JNF, BUILT_IN_JNL, BUILT_IN_LGAMMA,
BUILT_IN_LGAMMAF, BUILT_IN_LGAMMAL, BUILT_IN_SIGNIFICAND,
BUILT_IN_SIGNIFICANDF, BUILT_IN_SIGNIFICANDL, BUILT_IN_TGAMMA,
BUILT_IN_TGAMMAF, BUILT_IN_TGAMMAL, BUILT_IN_Y0, BUILT_IN_Y0F,
BUILT_IN_Y0L, BUILT_IN_Y1, BUILT_IN_Y1F, BUILT_IN_Y1L,
BUILT_IN_YN, BUILT_IN_YNF, BUILT_IN_YNL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add new cases.
* gcc.dg/torture/builtin-attr-1.c: Likewise.
From-SVN: r70889
2003-08-28 23:25:22 +02:00
|
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@findex j0
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@findex j0f
|
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@findex j0l
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@findex j1
|
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@findex j1f
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@findex j1l
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@findex jn
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@findex jnf
|
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@findex jnl
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex labs
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
@findex ldexp
|
|
|
|
@findex ldexpf
|
|
|
|
@findex ldexpl
|
builtin-types.def (BT_FN_FLOAT_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_FLOAT_INT_FLOAT,
BT_FN_DOUBLE_INT_DOUBLE, BT_FN_LONGDOUBLE_INT_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ERF, BUILT_IN_ERFC, BUILT_IN_ERFCF,
BUILT_IN_ERFCL, BUILT_IN_ERFF, BUILT_IN_ERFL, BUILT_IN_GAMMA,
BUILT_IN_GAMMAF, BUILT_IN_GAMMAL, BUILT_IN_J0, BUILT_IN_J0F,
BUILT_IN_J0L, BUILT_IN_J1, BUILT_IN_J1F, BUILT_IN_J1L,
BUILT_IN_JN, BUILT_IN_JNF, BUILT_IN_JNL, BUILT_IN_LGAMMA,
BUILT_IN_LGAMMAF, BUILT_IN_LGAMMAL, BUILT_IN_SIGNIFICAND,
BUILT_IN_SIGNIFICANDF, BUILT_IN_SIGNIFICANDL, BUILT_IN_TGAMMA,
BUILT_IN_TGAMMAF, BUILT_IN_TGAMMAL, BUILT_IN_Y0, BUILT_IN_Y0F,
BUILT_IN_Y0L, BUILT_IN_Y1, BUILT_IN_Y1F, BUILT_IN_Y1L,
BUILT_IN_YN, BUILT_IN_YNF, BUILT_IN_YNL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add new cases.
* gcc.dg/torture/builtin-attr-1.c: Likewise.
From-SVN: r70889
2003-08-28 23:25:22 +02:00
|
|
|
@findex lgamma
|
|
|
|
@findex lgammaf
|
|
|
|
@findex lgammal
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex llabs
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
@findex llrint
|
|
|
|
@findex llrintf
|
|
|
|
@findex llrintl
|
|
|
|
@findex llround
|
|
|
|
@findex llroundf
|
|
|
|
@findex llroundl
|
2002-08-04 01:21:31 +02:00
|
|
|
@findex log
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
@findex log10
|
|
|
|
@findex log10f
|
|
|
|
@findex log10l
|
|
|
|
@findex log1p
|
|
|
|
@findex log1pf
|
|
|
|
@findex log1pl
|
|
|
|
@findex log2
|
|
|
|
@findex log2f
|
|
|
|
@findex log2l
|
|
|
|
@findex logb
|
|
|
|
@findex logbf
|
|
|
|
@findex logbl
|
2002-08-04 01:21:31 +02:00
|
|
|
@findex logf
|
|
|
|
@findex logl
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
@findex lrint
|
|
|
|
@findex lrintf
|
|
|
|
@findex lrintl
|
|
|
|
@findex lround
|
|
|
|
@findex lroundf
|
|
|
|
@findex lroundl
|
2003-04-14 04:55:31 +02:00
|
|
|
@findex malloc
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex memcmp
|
|
|
|
@findex memcpy
|
2003-04-14 01:46:11 +02:00
|
|
|
@findex mempcpy
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex memset
|
builtin-types.def (BT_INT_PTR, [...]): New.
* builtin-types.def (BT_INT_PTR, BT_FLOAT_PTR, BT_DOUBLE_PTR,
BT_LONGDOUBLE_PTR, BT_FN_FLOAT_FLOAT_FLOATPTR,
BT_FN_DOUBLE_DOUBLE_DOUBLEPTR,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLEPTR,
BT_FN_FLOAT_FLOAT_INTPTR, BT_FN_DOUBLE_DOUBLE_INTPTR,
BT_FN_LONGDOUBLE_LONGDOUBLE_INTPTR,
BT_FN_FLOAT_FLOAT_FLOAT_INTPTR, BT_FN_DOUBLE_DOUBLE_DOUBLE_INTPTR,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_INTPTR,
BT_FN_VOID_FLOAT_FLOATPTR_FLOATPTR,
BT_FN_VOID_DOUBLE_DOUBLEPTR_DOUBLEPTR,
BT_FN_VOID_LONGDOUBLE_LONGDOUBLEPTR_LONGDOUBLEPTR): New.
* builtins.def (BUILT_IN_FREXP, BUILT_IN_FREXPF, BUILT_IN_FREXPL,
BUILT_IN_MODF, BUILT_IN_MODFF, BUILT_IN_MODFL, BUILT_IN_REMQUO,
BUILT_IN_REMQUOF, BUILT_IN_REMQUOL, BUILT_IN_SINCOS,
BUILT_IN_SINCOSF, BUILT_IN_SINCOSL): New.
* tree.c: Assign new type_nodes.
* tree.h (tree_index): Add TI_FLOAT_PTR_TYPE, TI_DOUBLE_PTR_TYPE,
TI_LONG_DOUBLE_PTR_TYPE, TI_INTEGER_PTR_TYPE.
(float_ptr_type_node, double_ptr_type_node,
long_double_ptr_type_node, integer_ptr_type_node): New type_nodes.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add new builtin cases.
From-SVN: r70890
2003-08-29 00:00:45 +02:00
|
|
|
@findex modf
|
|
|
|
@findex modff
|
|
|
|
@findex modfl
|
builtins.def (DEF_LIB_ALWAYS_BUILTIN, [...]): Delete.
* builtins.def (DEF_LIB_ALWAYS_BUILTIN, DEF_UNUSED_BUILTIN): Delete.
(abs, labs, fabs, fabsf, fabsl, abort, exit, _exit, _Exit): Use
the appropriate macro to define built-in function.
(fmod,fmodf,fmodl): New built-in functions.
* java/decl.c (java_init_decl_processing): Get soft_fmod_node from
built_in_decls[BUILT_IN_FMOD] rather than define it ourselves.
* doc/extend.texi (fmod,fmodf,fmodl): Document new built-ins.
From-SVN: r63445
2003-02-26 04:02:14 +01:00
|
|
|
@findex nearbyint
|
|
|
|
@findex nearbyintf
|
|
|
|
@findex nearbyintl
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
@findex nextafter
|
|
|
|
@findex nextafterf
|
|
|
|
@findex nextafterl
|
|
|
|
@findex nexttoward
|
|
|
|
@findex nexttowardf
|
|
|
|
@findex nexttowardl
|
builtin-types.def (BT_FN_FLOAT_FLOAT_FLOAT): New built-in type.
* builtin-types.def (BT_FN_FLOAT_FLOAT_FLOAT): New built-in type.
(BT_FN_LONG_DOUBLE_LONG_DOUBLE_LONG_DOUBLE): Likewise.
(BT_FN_DOUBLE_DOUBLE_DOUBLE): Likewise.
* builtins.def: Define pow, powf, powl, atan2, atan2f and atan2l
builtin functions (and their __builtin_* variants).
* builtins.c (mathfn_built_in): Handle missing log{,f,l} cases.
(expand_builtin): Don't expand log{,f,l}, pow{,f,l} or atan2{,f,l}
when not optimizing.
* doc/extend.texi: Document new pow and atan2 builtins, and
their float and long double variants. Realphabetize builtins.
* testsuite/gcc.dg/builtins-4.c: New test case.
From-SVN: r62551
2003-02-07 23:37:57 +01:00
|
|
|
@findex pow
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
@findex pow10
|
|
|
|
@findex pow10f
|
|
|
|
@findex pow10l
|
builtin-types.def (BT_FN_FLOAT_FLOAT_FLOAT): New built-in type.
* builtin-types.def (BT_FN_FLOAT_FLOAT_FLOAT): New built-in type.
(BT_FN_LONG_DOUBLE_LONG_DOUBLE_LONG_DOUBLE): Likewise.
(BT_FN_DOUBLE_DOUBLE_DOUBLE): Likewise.
* builtins.def: Define pow, powf, powl, atan2, atan2f and atan2l
builtin functions (and their __builtin_* variants).
* builtins.c (mathfn_built_in): Handle missing log{,f,l} cases.
(expand_builtin): Don't expand log{,f,l}, pow{,f,l} or atan2{,f,l}
when not optimizing.
* doc/extend.texi: Document new pow and atan2 builtins, and
their float and long double variants. Realphabetize builtins.
* testsuite/gcc.dg/builtins-4.c: New test case.
From-SVN: r62551
2003-02-07 23:37:57 +01:00
|
|
|
@findex powf
|
|
|
|
@findex powl
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex printf
|
2001-12-21 03:36:37 +01:00
|
|
|
@findex printf_unlocked
|
re PR c++/9367 (error: nonnull argument with extern "C" snprintf prototype)
PR c++/9367
* builtin-types.def (DEF_FUNCTION_TYPE_VAR_3): New macro.
(BT_FN_INT_CONST_STRING_VALIST_ARG,
BT_FN_INT_STRING_CONST_STRING_VALIST_ARG,
BT_FN_INT_CONST_STRING_CONST_STRING_VALIST_ARG,
BT_FN_INT_STRING_SIZE_CONST_STRING_VALIST_ARG,
BT_FN_INT_STRING_CONST_STRING_VAR,
BT_FN_INT_CONST_STRING_CONST_STRING_VAR,
BT_FN_INT_STRING_SIZE_CONST_STRING_VAR): New built-in types.
* builtin-attrs.def (ATTR_NONNULL_1, ATTR_NONNULL_2,
ATTR_NONNULL_3): Also include the nothrow attribute.
(sprintf, scanf, sscanf, vprintf, vsprintf, snprintf,
vsnprintf, vscanf, vsscanf): Don't define attributes here.
* builtins.def (putchar, puts): Make full C89 built-ins.
(snprintf, sprintf, scanf, sscanf, vprintf, vscanf,
vsscanf, vsnprintf, vsprintf): New built-ins.
* c-common.c (c_common_nodes_and_builtins): Handle new macro
DEF_FUNCTION_TYPE_VAR_3.
* doc/extend.texi: Document these new built-in functions.
* java/builtins.c (builtin_type): Handle DEF_FUNCTION_TYPE_VAR_3.
(initialize_builtins): Handle DEF_FUNCTION_TYPE_VAR_3.
* g++.old-deja/g++.other/builtins10.C: New test for PR 9367.
* gcc.dg/format/attr-5.c: Handle new conflicting types warning.
From-SVN: r63650
2003-03-02 02:34:34 +01:00
|
|
|
@findex putchar
|
|
|
|
@findex puts
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
@findex remainder
|
|
|
|
@findex remainderf
|
|
|
|
@findex remainderl
|
builtin-types.def (BT_INT_PTR, [...]): New.
* builtin-types.def (BT_INT_PTR, BT_FLOAT_PTR, BT_DOUBLE_PTR,
BT_LONGDOUBLE_PTR, BT_FN_FLOAT_FLOAT_FLOATPTR,
BT_FN_DOUBLE_DOUBLE_DOUBLEPTR,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLEPTR,
BT_FN_FLOAT_FLOAT_INTPTR, BT_FN_DOUBLE_DOUBLE_INTPTR,
BT_FN_LONGDOUBLE_LONGDOUBLE_INTPTR,
BT_FN_FLOAT_FLOAT_FLOAT_INTPTR, BT_FN_DOUBLE_DOUBLE_DOUBLE_INTPTR,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_INTPTR,
BT_FN_VOID_FLOAT_FLOATPTR_FLOATPTR,
BT_FN_VOID_DOUBLE_DOUBLEPTR_DOUBLEPTR,
BT_FN_VOID_LONGDOUBLE_LONGDOUBLEPTR_LONGDOUBLEPTR): New.
* builtins.def (BUILT_IN_FREXP, BUILT_IN_FREXPF, BUILT_IN_FREXPL,
BUILT_IN_MODF, BUILT_IN_MODFF, BUILT_IN_MODFL, BUILT_IN_REMQUO,
BUILT_IN_REMQUOF, BUILT_IN_REMQUOL, BUILT_IN_SINCOS,
BUILT_IN_SINCOSF, BUILT_IN_SINCOSL): New.
* tree.c: Assign new type_nodes.
* tree.h (tree_index): Add TI_FLOAT_PTR_TYPE, TI_DOUBLE_PTR_TYPE,
TI_LONG_DOUBLE_PTR_TYPE, TI_INTEGER_PTR_TYPE.
(float_ptr_type_node, double_ptr_type_node,
long_double_ptr_type_node, integer_ptr_type_node): New type_nodes.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add new builtin cases.
From-SVN: r70890
2003-08-29 00:00:45 +02:00
|
|
|
@findex remquo
|
|
|
|
@findex remquof
|
|
|
|
@findex remquol
|
2000-11-13 03:14:05 +01:00
|
|
|
@findex rindex
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
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|
@findex rint
|
|
|
|
@findex rintf
|
|
|
|
@findex rintl
|
builtins.def (DEF_LIB_ALWAYS_BUILTIN, [...]): Delete.
* builtins.def (DEF_LIB_ALWAYS_BUILTIN, DEF_UNUSED_BUILTIN): Delete.
(abs, labs, fabs, fabsf, fabsl, abort, exit, _exit, _Exit): Use
the appropriate macro to define built-in function.
(fmod,fmodf,fmodl): New built-in functions.
* java/decl.c (java_init_decl_processing): Get soft_fmod_node from
built_in_decls[BUILT_IN_FMOD] rather than define it ourselves.
* doc/extend.texi (fmod,fmodf,fmodl): Document new built-ins.
From-SVN: r63445
2003-02-26 04:02:14 +01:00
|
|
|
@findex round
|
|
|
|
@findex roundf
|
|
|
|
@findex roundl
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
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|
@findex scalb
|
|
|
|
@findex scalbf
|
|
|
|
@findex scalbl
|
|
|
|
@findex scalbln
|
|
|
|
@findex scalblnf
|
|
|
|
@findex scalblnf
|
|
|
|
@findex scalbn
|
|
|
|
@findex scalbnf
|
|
|
|
@findex scanfnl
|
2004-02-01 15:59:15 +01:00
|
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@findex signbit
|
|
|
|
@findex signbitf
|
|
|
|
@findex signbitl
|
builtin-types.def (BT_FN_FLOAT_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_FLOAT_INT_FLOAT,
BT_FN_DOUBLE_INT_DOUBLE, BT_FN_LONGDOUBLE_INT_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ERF, BUILT_IN_ERFC, BUILT_IN_ERFCF,
BUILT_IN_ERFCL, BUILT_IN_ERFF, BUILT_IN_ERFL, BUILT_IN_GAMMA,
BUILT_IN_GAMMAF, BUILT_IN_GAMMAL, BUILT_IN_J0, BUILT_IN_J0F,
BUILT_IN_J0L, BUILT_IN_J1, BUILT_IN_J1F, BUILT_IN_J1L,
BUILT_IN_JN, BUILT_IN_JNF, BUILT_IN_JNL, BUILT_IN_LGAMMA,
BUILT_IN_LGAMMAF, BUILT_IN_LGAMMAL, BUILT_IN_SIGNIFICAND,
BUILT_IN_SIGNIFICANDF, BUILT_IN_SIGNIFICANDL, BUILT_IN_TGAMMA,
BUILT_IN_TGAMMAF, BUILT_IN_TGAMMAL, BUILT_IN_Y0, BUILT_IN_Y0F,
BUILT_IN_Y0L, BUILT_IN_Y1, BUILT_IN_Y1F, BUILT_IN_Y1L,
BUILT_IN_YN, BUILT_IN_YNF, BUILT_IN_YNL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add new cases.
* gcc.dg/torture/builtin-attr-1.c: Likewise.
From-SVN: r70889
2003-08-28 23:25:22 +02:00
|
|
|
@findex significand
|
|
|
|
@findex significandf
|
|
|
|
@findex significandl
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex sin
|
builtin-types.def (BT_INT_PTR, [...]): New.
* builtin-types.def (BT_INT_PTR, BT_FLOAT_PTR, BT_DOUBLE_PTR,
BT_LONGDOUBLE_PTR, BT_FN_FLOAT_FLOAT_FLOATPTR,
BT_FN_DOUBLE_DOUBLE_DOUBLEPTR,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLEPTR,
BT_FN_FLOAT_FLOAT_INTPTR, BT_FN_DOUBLE_DOUBLE_INTPTR,
BT_FN_LONGDOUBLE_LONGDOUBLE_INTPTR,
BT_FN_FLOAT_FLOAT_FLOAT_INTPTR, BT_FN_DOUBLE_DOUBLE_DOUBLE_INTPTR,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_INTPTR,
BT_FN_VOID_FLOAT_FLOATPTR_FLOATPTR,
BT_FN_VOID_DOUBLE_DOUBLEPTR_DOUBLEPTR,
BT_FN_VOID_LONGDOUBLE_LONGDOUBLEPTR_LONGDOUBLEPTR): New.
* builtins.def (BUILT_IN_FREXP, BUILT_IN_FREXPF, BUILT_IN_FREXPL,
BUILT_IN_MODF, BUILT_IN_MODFF, BUILT_IN_MODFL, BUILT_IN_REMQUO,
BUILT_IN_REMQUOF, BUILT_IN_REMQUOL, BUILT_IN_SINCOS,
BUILT_IN_SINCOSF, BUILT_IN_SINCOSL): New.
* tree.c: Assign new type_nodes.
* tree.h (tree_index): Add TI_FLOAT_PTR_TYPE, TI_DOUBLE_PTR_TYPE,
TI_LONG_DOUBLE_PTR_TYPE, TI_INTEGER_PTR_TYPE.
(float_ptr_type_node, double_ptr_type_node,
long_double_ptr_type_node, integer_ptr_type_node): New type_nodes.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add new builtin cases.
From-SVN: r70890
2003-08-29 00:00:45 +02:00
|
|
|
@findex sincos
|
|
|
|
@findex sincosf
|
|
|
|
@findex sincosl
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex sinf
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
@findex sinh
|
|
|
|
@findex sinhf
|
|
|
|
@findex sinhl
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex sinl
|
re PR c++/9367 (error: nonnull argument with extern "C" snprintf prototype)
PR c++/9367
* builtin-types.def (DEF_FUNCTION_TYPE_VAR_3): New macro.
(BT_FN_INT_CONST_STRING_VALIST_ARG,
BT_FN_INT_STRING_CONST_STRING_VALIST_ARG,
BT_FN_INT_CONST_STRING_CONST_STRING_VALIST_ARG,
BT_FN_INT_STRING_SIZE_CONST_STRING_VALIST_ARG,
BT_FN_INT_STRING_CONST_STRING_VAR,
BT_FN_INT_CONST_STRING_CONST_STRING_VAR,
BT_FN_INT_STRING_SIZE_CONST_STRING_VAR): New built-in types.
* builtin-attrs.def (ATTR_NONNULL_1, ATTR_NONNULL_2,
ATTR_NONNULL_3): Also include the nothrow attribute.
(sprintf, scanf, sscanf, vprintf, vsprintf, snprintf,
vsnprintf, vscanf, vsscanf): Don't define attributes here.
* builtins.def (putchar, puts): Make full C89 built-ins.
(snprintf, sprintf, scanf, sscanf, vprintf, vscanf,
vsscanf, vsnprintf, vsprintf): New built-ins.
* c-common.c (c_common_nodes_and_builtins): Handle new macro
DEF_FUNCTION_TYPE_VAR_3.
* doc/extend.texi: Document these new built-in functions.
* java/builtins.c (builtin_type): Handle DEF_FUNCTION_TYPE_VAR_3.
(initialize_builtins): Handle DEF_FUNCTION_TYPE_VAR_3.
* g++.old-deja/g++.other/builtins10.C: New test for PR 9367.
* gcc.dg/format/attr-5.c: Handle new conflicting types warning.
From-SVN: r63650
2003-03-02 02:34:34 +01:00
|
|
|
@findex snprintf
|
|
|
|
@findex sprintf
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex sqrt
|
|
|
|
@findex sqrtf
|
|
|
|
@findex sqrtl
|
re PR c++/9367 (error: nonnull argument with extern "C" snprintf prototype)
PR c++/9367
* builtin-types.def (DEF_FUNCTION_TYPE_VAR_3): New macro.
(BT_FN_INT_CONST_STRING_VALIST_ARG,
BT_FN_INT_STRING_CONST_STRING_VALIST_ARG,
BT_FN_INT_CONST_STRING_CONST_STRING_VALIST_ARG,
BT_FN_INT_STRING_SIZE_CONST_STRING_VALIST_ARG,
BT_FN_INT_STRING_CONST_STRING_VAR,
BT_FN_INT_CONST_STRING_CONST_STRING_VAR,
BT_FN_INT_STRING_SIZE_CONST_STRING_VAR): New built-in types.
* builtin-attrs.def (ATTR_NONNULL_1, ATTR_NONNULL_2,
ATTR_NONNULL_3): Also include the nothrow attribute.
(sprintf, scanf, sscanf, vprintf, vsprintf, snprintf,
vsnprintf, vscanf, vsscanf): Don't define attributes here.
* builtins.def (putchar, puts): Make full C89 built-ins.
(snprintf, sprintf, scanf, sscanf, vprintf, vscanf,
vsscanf, vsnprintf, vsprintf): New built-ins.
* c-common.c (c_common_nodes_and_builtins): Handle new macro
DEF_FUNCTION_TYPE_VAR_3.
* doc/extend.texi: Document these new built-in functions.
* java/builtins.c (builtin_type): Handle DEF_FUNCTION_TYPE_VAR_3.
(initialize_builtins): Handle DEF_FUNCTION_TYPE_VAR_3.
* g++.old-deja/g++.other/builtins10.C: New test for PR 9367.
* gcc.dg/format/attr-5.c: Handle new conflicting types warning.
From-SVN: r63650
2003-03-02 02:34:34 +01:00
|
|
|
@findex sscanf
|
2003-04-14 01:46:11 +02:00
|
|
|
@findex stpcpy
|
builtins.c (expand_builtin_strcat, [...]): New functions.
* builtins.c (expand_builtin_strcat, expand_builtin_strncat,
expand_builtin_strspn, expand_builtin_strcspn): New functions.
(expand_builtin): Handle BUILT_IN_STRCAT, BUILT_IN_STRNCAT,
BUILT_IN_STRSPN and BUILT_IN_STRCSPN.
* builtins.def (BUILT_IN_STRCAT, BUILT_IN_STRNCAT,
BUILT_IN_STRSPN, BUILT_IN_STRCSPN): New entries.
* c-common.c (c_common_nodes_and_builtins): Declare builtin
strcat, strncat, strspn and strcspn.
(string_ftype_string_cstring): Renamed from `string_ftype_ptr_ptr'.
* extend.texi (strcat, strcspn, strncat, strspn): Document new
builtins.
testsuite:
* gcc.c-torture/execute/string-opt-9.c: New test.
* gcc.c-torture/execute/string-opt-10.c: Likewise.
* gcc.c-torture/execute/string-opt-11.c: Likewise.
* gcc.c-torture/execute/string-opt-12.c: Likewise.
From-SVN: r37964
2000-12-03 04:46:03 +01:00
|
|
|
@findex strcat
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex strchr
|
|
|
|
@findex strcmp
|
|
|
|
@findex strcpy
|
builtins.c (expand_builtin_strcat, [...]): New functions.
* builtins.c (expand_builtin_strcat, expand_builtin_strncat,
expand_builtin_strspn, expand_builtin_strcspn): New functions.
(expand_builtin): Handle BUILT_IN_STRCAT, BUILT_IN_STRNCAT,
BUILT_IN_STRSPN and BUILT_IN_STRCSPN.
* builtins.def (BUILT_IN_STRCAT, BUILT_IN_STRNCAT,
BUILT_IN_STRSPN, BUILT_IN_STRCSPN): New entries.
* c-common.c (c_common_nodes_and_builtins): Declare builtin
strcat, strncat, strspn and strcspn.
(string_ftype_string_cstring): Renamed from `string_ftype_ptr_ptr'.
* extend.texi (strcat, strcspn, strncat, strspn): Document new
builtins.
testsuite:
* gcc.c-torture/execute/string-opt-9.c: New test.
* gcc.c-torture/execute/string-opt-10.c: Likewise.
* gcc.c-torture/execute/string-opt-11.c: Likewise.
* gcc.c-torture/execute/string-opt-12.c: Likewise.
From-SVN: r37964
2000-12-03 04:46:03 +01:00
|
|
|
@findex strcspn
|
2003-04-14 04:55:31 +02:00
|
|
|
@findex strdup
|
builtin-types.def (BT_SSIZE): New primitive type.
* builtin-types.def (BT_SSIZE): New primitive type.
(BT_FN_INT_PTR_CONST_STRING_VALIST_ARG,
BT_FN_STRING_CONST_STRING_CONST_STRING_INT,
BT_FN_SIZE_STRING_SIZE_CONST_STRING_CONST_PTR,
BT_FN_SSIZE_STRING_SIZE_CONST_STRING_VAR): New function types.
* builtins.def (BUILT_IN_DCGETTEXT, BUILT_IN_DGETTEXT,
BUILT_IN_FSCANF, BUILT_IN_GETTEXT, BUILT_IN_STRFMON,
BUILT_IN_STRFTIME, BUILT_IN_VFPRINTF, BUILT_IN_VFSCANF): New builtins.
* builtin-attrs.def: Remove DEF_FN_ATTR construct and the last
few functions that define default attributes using it.
* c-common.c (c_common_insert_default_attributes): Do nothing.
* doc/extend.texi: Document these "new" builtins.
From-SVN: r70113
2003-08-03 05:23:18 +02:00
|
|
|
@findex strfmon
|
|
|
|
@findex strftime
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex strlen
|
builtins.c (expand_builtin_strcat, [...]): New functions.
* builtins.c (expand_builtin_strcat, expand_builtin_strncat,
expand_builtin_strspn, expand_builtin_strcspn): New functions.
(expand_builtin): Handle BUILT_IN_STRCAT, BUILT_IN_STRNCAT,
BUILT_IN_STRSPN and BUILT_IN_STRCSPN.
* builtins.def (BUILT_IN_STRCAT, BUILT_IN_STRNCAT,
BUILT_IN_STRSPN, BUILT_IN_STRCSPN): New entries.
* c-common.c (c_common_nodes_and_builtins): Declare builtin
strcat, strncat, strspn and strcspn.
(string_ftype_string_cstring): Renamed from `string_ftype_ptr_ptr'.
* extend.texi (strcat, strcspn, strncat, strspn): Document new
builtins.
testsuite:
* gcc.c-torture/execute/string-opt-9.c: New test.
* gcc.c-torture/execute/string-opt-10.c: Likewise.
* gcc.c-torture/execute/string-opt-11.c: Likewise.
* gcc.c-torture/execute/string-opt-12.c: Likewise.
From-SVN: r37964
2000-12-03 04:46:03 +01:00
|
|
|
@findex strncat
|
2000-11-27 06:00:06 +01:00
|
|
|
@findex strncmp
|
|
|
|
@findex strncpy
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex strpbrk
|
|
|
|
@findex strrchr
|
builtins.c (expand_builtin_strcat, [...]): New functions.
* builtins.c (expand_builtin_strcat, expand_builtin_strncat,
expand_builtin_strspn, expand_builtin_strcspn): New functions.
(expand_builtin): Handle BUILT_IN_STRCAT, BUILT_IN_STRNCAT,
BUILT_IN_STRSPN and BUILT_IN_STRCSPN.
* builtins.def (BUILT_IN_STRCAT, BUILT_IN_STRNCAT,
BUILT_IN_STRSPN, BUILT_IN_STRCSPN): New entries.
* c-common.c (c_common_nodes_and_builtins): Declare builtin
strcat, strncat, strspn and strcspn.
(string_ftype_string_cstring): Renamed from `string_ftype_ptr_ptr'.
* extend.texi (strcat, strcspn, strncat, strspn): Document new
builtins.
testsuite:
* gcc.c-torture/execute/string-opt-9.c: New test.
* gcc.c-torture/execute/string-opt-10.c: Likewise.
* gcc.c-torture/execute/string-opt-11.c: Likewise.
* gcc.c-torture/execute/string-opt-12.c: Likewise.
From-SVN: r37964
2000-12-03 04:46:03 +01:00
|
|
|
@findex strspn
|
2000-11-10 02:46:00 +01:00
|
|
|
@findex strstr
|
builtins.def: Defome atan...
* builtins.def: Defome atan, atanf, atanl, tan, tanf and tanl
builtin functions (and their __builtin_* variants).
* builtins.c (mathfn_built_in): Handle tan{,f,l} and atan{,f,l}.
(expand_builtin): Don't expand tan{,f,l} or atan{,f,l} when not
optimizing.
* doc/extend.texi: Document new tan and atan builtins, and
their float and long double variants.
* gcc.dg/builtins-1.c: Add tests for tan and atan.
* gcc.dg/builtins-4.c: Add test for fmod.
From-SVN: r67137
2003-05-23 22:45:40 +02:00
|
|
|
@findex tan
|
|
|
|
@findex tanf
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
@findex tanh
|
|
|
|
@findex tanhf
|
|
|
|
@findex tanhl
|
builtins.def: Defome atan...
* builtins.def: Defome atan, atanf, atanl, tan, tanf and tanl
builtin functions (and their __builtin_* variants).
* builtins.c (mathfn_built_in): Handle tan{,f,l} and atan{,f,l}.
(expand_builtin): Don't expand tan{,f,l} or atan{,f,l} when not
optimizing.
* doc/extend.texi: Document new tan and atan builtins, and
their float and long double variants.
* gcc.dg/builtins-1.c: Add tests for tan and atan.
* gcc.dg/builtins-4.c: Add test for fmod.
From-SVN: r67137
2003-05-23 22:45:40 +02:00
|
|
|
@findex tanl
|
builtin-types.def (BT_FN_FLOAT_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_FLOAT_INT_FLOAT,
BT_FN_DOUBLE_INT_DOUBLE, BT_FN_LONGDOUBLE_INT_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ERF, BUILT_IN_ERFC, BUILT_IN_ERFCF,
BUILT_IN_ERFCL, BUILT_IN_ERFF, BUILT_IN_ERFL, BUILT_IN_GAMMA,
BUILT_IN_GAMMAF, BUILT_IN_GAMMAL, BUILT_IN_J0, BUILT_IN_J0F,
BUILT_IN_J0L, BUILT_IN_J1, BUILT_IN_J1F, BUILT_IN_J1L,
BUILT_IN_JN, BUILT_IN_JNF, BUILT_IN_JNL, BUILT_IN_LGAMMA,
BUILT_IN_LGAMMAF, BUILT_IN_LGAMMAL, BUILT_IN_SIGNIFICAND,
BUILT_IN_SIGNIFICANDF, BUILT_IN_SIGNIFICANDL, BUILT_IN_TGAMMA,
BUILT_IN_TGAMMAF, BUILT_IN_TGAMMAL, BUILT_IN_Y0, BUILT_IN_Y0F,
BUILT_IN_Y0L, BUILT_IN_Y1, BUILT_IN_Y1F, BUILT_IN_Y1L,
BUILT_IN_YN, BUILT_IN_YNF, BUILT_IN_YNL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add new cases.
* gcc.dg/torture/builtin-attr-1.c: Likewise.
From-SVN: r70889
2003-08-28 23:25:22 +02:00
|
|
|
@findex tgamma
|
|
|
|
@findex tgammaf
|
|
|
|
@findex tgammal
|
2004-03-25 18:55:13 +01:00
|
|
|
@findex toascii
|
|
|
|
@findex tolower
|
|
|
|
@findex toupper
|
2004-03-27 06:29:40 +01:00
|
|
|
@findex towlower
|
|
|
|
@findex towupper
|
2002-12-16 19:23:00 +01:00
|
|
|
@findex trunc
|
|
|
|
@findex truncf
|
|
|
|
@findex truncl
|
builtin-types.def (BT_SSIZE): New primitive type.
* builtin-types.def (BT_SSIZE): New primitive type.
(BT_FN_INT_PTR_CONST_STRING_VALIST_ARG,
BT_FN_STRING_CONST_STRING_CONST_STRING_INT,
BT_FN_SIZE_STRING_SIZE_CONST_STRING_CONST_PTR,
BT_FN_SSIZE_STRING_SIZE_CONST_STRING_VAR): New function types.
* builtins.def (BUILT_IN_DCGETTEXT, BUILT_IN_DGETTEXT,
BUILT_IN_FSCANF, BUILT_IN_GETTEXT, BUILT_IN_STRFMON,
BUILT_IN_STRFTIME, BUILT_IN_VFPRINTF, BUILT_IN_VFSCANF): New builtins.
* builtin-attrs.def: Remove DEF_FN_ATTR construct and the last
few functions that define default attributes using it.
* c-common.c (c_common_insert_default_attributes): Do nothing.
* doc/extend.texi: Document these "new" builtins.
From-SVN: r70113
2003-08-03 05:23:18 +02:00
|
|
|
@findex vfprintf
|
|
|
|
@findex vfscanf
|
re PR c++/9367 (error: nonnull argument with extern "C" snprintf prototype)
PR c++/9367
* builtin-types.def (DEF_FUNCTION_TYPE_VAR_3): New macro.
(BT_FN_INT_CONST_STRING_VALIST_ARG,
BT_FN_INT_STRING_CONST_STRING_VALIST_ARG,
BT_FN_INT_CONST_STRING_CONST_STRING_VALIST_ARG,
BT_FN_INT_STRING_SIZE_CONST_STRING_VALIST_ARG,
BT_FN_INT_STRING_CONST_STRING_VAR,
BT_FN_INT_CONST_STRING_CONST_STRING_VAR,
BT_FN_INT_STRING_SIZE_CONST_STRING_VAR): New built-in types.
* builtin-attrs.def (ATTR_NONNULL_1, ATTR_NONNULL_2,
ATTR_NONNULL_3): Also include the nothrow attribute.
(sprintf, scanf, sscanf, vprintf, vsprintf, snprintf,
vsnprintf, vscanf, vsscanf): Don't define attributes here.
* builtins.def (putchar, puts): Make full C89 built-ins.
(snprintf, sprintf, scanf, sscanf, vprintf, vscanf,
vsscanf, vsnprintf, vsprintf): New built-ins.
* c-common.c (c_common_nodes_and_builtins): Handle new macro
DEF_FUNCTION_TYPE_VAR_3.
* doc/extend.texi: Document these new built-in functions.
* java/builtins.c (builtin_type): Handle DEF_FUNCTION_TYPE_VAR_3.
(initialize_builtins): Handle DEF_FUNCTION_TYPE_VAR_3.
* g++.old-deja/g++.other/builtins10.C: New test for PR 9367.
* gcc.dg/format/attr-5.c: Handle new conflicting types warning.
From-SVN: r63650
2003-03-02 02:34:34 +01:00
|
|
|
@findex vprintf
|
|
|
|
@findex vscanf
|
|
|
|
@findex vsnprintf
|
|
|
|
@findex vsprintf
|
|
|
|
@findex vsscanf
|
builtin-types.def (BT_FN_FLOAT_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_FLOAT_INT_FLOAT,
BT_FN_DOUBLE_INT_DOUBLE, BT_FN_LONGDOUBLE_INT_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ERF, BUILT_IN_ERFC, BUILT_IN_ERFCF,
BUILT_IN_ERFCL, BUILT_IN_ERFF, BUILT_IN_ERFL, BUILT_IN_GAMMA,
BUILT_IN_GAMMAF, BUILT_IN_GAMMAL, BUILT_IN_J0, BUILT_IN_J0F,
BUILT_IN_J0L, BUILT_IN_J1, BUILT_IN_J1F, BUILT_IN_J1L,
BUILT_IN_JN, BUILT_IN_JNF, BUILT_IN_JNL, BUILT_IN_LGAMMA,
BUILT_IN_LGAMMAF, BUILT_IN_LGAMMAL, BUILT_IN_SIGNIFICAND,
BUILT_IN_SIGNIFICANDF, BUILT_IN_SIGNIFICANDL, BUILT_IN_TGAMMA,
BUILT_IN_TGAMMAF, BUILT_IN_TGAMMAL, BUILT_IN_Y0, BUILT_IN_Y0F,
BUILT_IN_Y0L, BUILT_IN_Y1, BUILT_IN_Y1F, BUILT_IN_Y1L,
BUILT_IN_YN, BUILT_IN_YNF, BUILT_IN_YNL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add new cases.
* gcc.dg/torture/builtin-attr-1.c: Likewise.
From-SVN: r70889
2003-08-28 23:25:22 +02:00
|
|
|
@findex y0
|
|
|
|
@findex y0f
|
|
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|
@findex y0l
|
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@findex y1
|
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@findex y1f
|
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@findex y1l
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@findex yn
|
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@findex ynf
|
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@findex ynl
|
1998-12-29 12:36:22 +01:00
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|
|
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
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|
GCC provides a large number of built-in functions other than the ones
|
1998-12-29 12:36:22 +01:00
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|
mentioned above. Some of these are for internal use in the processing
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|
|
of exceptions or variable-length argument lists and will not be
|
|
|
|
documented here because they may change from time to time; we do not
|
|
|
|
recommend general use of these functions.
|
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The remaining functions are provided for optimization purposes.
|
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2001-06-13 00:40:00 +02:00
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@opindex fno-builtin
|
2001-08-18 23:02:44 +02:00
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|
GCC includes built-in versions of many of the functions in the standard
|
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C library. The versions prefixed with @code{__builtin_} will always be
|
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|
treated as having the same meaning as the C library function even if you
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
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specify the @option{-fno-builtin} option. (@pxref{C Dialect Options})
|
2001-08-18 23:02:44 +02:00
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|
Many of these functions are only optimized in certain cases; if they are
|
2000-11-10 02:46:00 +01:00
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not optimized in a particular case, a call to the library function will
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be emitted.
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2001-06-13 00:40:00 +02:00
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@opindex ansi
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@opindex std
|
builtins.def (DEF_LIB_ALWAYS_BUILTIN, [...]): Delete.
* builtins.def (DEF_LIB_ALWAYS_BUILTIN, DEF_UNUSED_BUILTIN): Delete.
(abs, labs, fabs, fabsf, fabsl, abort, exit, _exit, _Exit): Use
the appropriate macro to define built-in function.
(fmod,fmodf,fmodl): New built-in functions.
* java/decl.c (java_init_decl_processing): Get soft_fmod_node from
built_in_decls[BUILT_IN_FMOD] rather than define it ourselves.
* doc/extend.texi (fmod,fmodf,fmodl): Document new built-ins.
From-SVN: r63445
2003-02-26 04:02:14 +01:00
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Outside strict ISO C mode (@option{-ansi}, @option{-std=c89} or
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
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|
|
@option{-std=c99}), the functions
|
|
|
|
@code{_exit}, @code{alloca}, @code{bcmp}, @code{bzero},
|
|
|
|
@code{dcgettext}, @code{dgettext}, @code{dremf}, @code{dreml},
|
|
|
|
@code{drem}, @code{exp10f}, @code{exp10l}, @code{exp10}, @code{ffsll},
|
|
|
|
@code{ffsl}, @code{ffs}, @code{fprintf_unlocked}, @code{fputs_unlocked},
|
builtin-types.def (BT_FN_FLOAT_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_FLOAT_INT_FLOAT,
BT_FN_DOUBLE_INT_DOUBLE, BT_FN_LONGDOUBLE_INT_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ERF, BUILT_IN_ERFC, BUILT_IN_ERFCF,
BUILT_IN_ERFCL, BUILT_IN_ERFF, BUILT_IN_ERFL, BUILT_IN_GAMMA,
BUILT_IN_GAMMAF, BUILT_IN_GAMMAL, BUILT_IN_J0, BUILT_IN_J0F,
BUILT_IN_J0L, BUILT_IN_J1, BUILT_IN_J1F, BUILT_IN_J1L,
BUILT_IN_JN, BUILT_IN_JNF, BUILT_IN_JNL, BUILT_IN_LGAMMA,
BUILT_IN_LGAMMAF, BUILT_IN_LGAMMAL, BUILT_IN_SIGNIFICAND,
BUILT_IN_SIGNIFICANDF, BUILT_IN_SIGNIFICANDL, BUILT_IN_TGAMMA,
BUILT_IN_TGAMMAF, BUILT_IN_TGAMMAL, BUILT_IN_Y0, BUILT_IN_Y0F,
BUILT_IN_Y0L, BUILT_IN_Y1, BUILT_IN_Y1F, BUILT_IN_Y1L,
BUILT_IN_YN, BUILT_IN_YNF, BUILT_IN_YNL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add new cases.
* gcc.dg/torture/builtin-attr-1.c: Likewise.
From-SVN: r70889
2003-08-28 23:25:22 +02:00
|
|
|
@code{gammaf}, @code{gammal}, @code{gamma}, @code{gettext},
|
2004-03-25 18:55:13 +01:00
|
|
|
@code{index}, @code{isascii}, @code{j0f}, @code{j0l}, @code{j0},
|
|
|
|
@code{j1f}, @code{j1l}, @code{j1}, @code{jnf}, @code{jnl}, @code{jn},
|
|
|
|
@code{mempcpy}, @code{pow10f}, @code{pow10l}, @code{pow10},
|
|
|
|
@code{printf_unlocked}, @code{rindex}, @code{scalbf}, @code{scalbl},
|
|
|
|
@code{scalb}, @code{signbit}, @code{signbitf}, @code{signbitl},
|
builtin-types.def (BT_FN_FLOAT_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_FLOAT_INT_FLOAT,
BT_FN_DOUBLE_INT_DOUBLE, BT_FN_LONGDOUBLE_INT_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ERF, BUILT_IN_ERFC, BUILT_IN_ERFCF,
BUILT_IN_ERFCL, BUILT_IN_ERFF, BUILT_IN_ERFL, BUILT_IN_GAMMA,
BUILT_IN_GAMMAF, BUILT_IN_GAMMAL, BUILT_IN_J0, BUILT_IN_J0F,
BUILT_IN_J0L, BUILT_IN_J1, BUILT_IN_J1F, BUILT_IN_J1L,
BUILT_IN_JN, BUILT_IN_JNF, BUILT_IN_JNL, BUILT_IN_LGAMMA,
BUILT_IN_LGAMMAF, BUILT_IN_LGAMMAL, BUILT_IN_SIGNIFICAND,
BUILT_IN_SIGNIFICANDF, BUILT_IN_SIGNIFICANDL, BUILT_IN_TGAMMA,
BUILT_IN_TGAMMAF, BUILT_IN_TGAMMAL, BUILT_IN_Y0, BUILT_IN_Y0F,
BUILT_IN_Y0L, BUILT_IN_Y1, BUILT_IN_Y1F, BUILT_IN_Y1L,
BUILT_IN_YN, BUILT_IN_YNF, BUILT_IN_YNL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add new cases.
* gcc.dg/torture/builtin-attr-1.c: Likewise.
From-SVN: r70889
2003-08-28 23:25:22 +02:00
|
|
|
@code{significandf}, @code{significandl}, @code{significand},
|
builtin-types.def (BT_INT_PTR, [...]): New.
* builtin-types.def (BT_INT_PTR, BT_FLOAT_PTR, BT_DOUBLE_PTR,
BT_LONGDOUBLE_PTR, BT_FN_FLOAT_FLOAT_FLOATPTR,
BT_FN_DOUBLE_DOUBLE_DOUBLEPTR,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLEPTR,
BT_FN_FLOAT_FLOAT_INTPTR, BT_FN_DOUBLE_DOUBLE_INTPTR,
BT_FN_LONGDOUBLE_LONGDOUBLE_INTPTR,
BT_FN_FLOAT_FLOAT_FLOAT_INTPTR, BT_FN_DOUBLE_DOUBLE_DOUBLE_INTPTR,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_INTPTR,
BT_FN_VOID_FLOAT_FLOATPTR_FLOATPTR,
BT_FN_VOID_DOUBLE_DOUBLEPTR_DOUBLEPTR,
BT_FN_VOID_LONGDOUBLE_LONGDOUBLEPTR_LONGDOUBLEPTR): New.
* builtins.def (BUILT_IN_FREXP, BUILT_IN_FREXPF, BUILT_IN_FREXPL,
BUILT_IN_MODF, BUILT_IN_MODFF, BUILT_IN_MODFL, BUILT_IN_REMQUO,
BUILT_IN_REMQUOF, BUILT_IN_REMQUOL, BUILT_IN_SINCOS,
BUILT_IN_SINCOSF, BUILT_IN_SINCOSL): New.
* tree.c: Assign new type_nodes.
* tree.h (tree_index): Add TI_FLOAT_PTR_TYPE, TI_DOUBLE_PTR_TYPE,
TI_LONG_DOUBLE_PTR_TYPE, TI_INTEGER_PTR_TYPE.
(float_ptr_type_node, double_ptr_type_node,
long_double_ptr_type_node, integer_ptr_type_node): New type_nodes.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add new builtin cases.
From-SVN: r70890
2003-08-29 00:00:45 +02:00
|
|
|
@code{sincosf}, @code{sincosl}, @code{sincos}, @code{stpcpy},
|
2004-03-25 18:55:13 +01:00
|
|
|
@code{strdup}, @code{strfmon}, @code{toascii}, @code{y0f}, @code{y0l},
|
|
|
|
@code{y0}, @code{y1f}, @code{y1l}, @code{y1}, @code{ynf}, @code{ynl} and
|
|
|
|
@code{yn}
|
2003-04-14 04:55:31 +02:00
|
|
|
may be handled as built-in functions.
|
builtins.def (DEF_LIB_ALWAYS_BUILTIN, [...]): Delete.
* builtins.def (DEF_LIB_ALWAYS_BUILTIN, DEF_UNUSED_BUILTIN): Delete.
(abs, labs, fabs, fabsf, fabsl, abort, exit, _exit, _Exit): Use
the appropriate macro to define built-in function.
(fmod,fmodf,fmodl): New built-in functions.
* java/decl.c (java_init_decl_processing): Get soft_fmod_node from
built_in_decls[BUILT_IN_FMOD] rather than define it ourselves.
* doc/extend.texi (fmod,fmodf,fmodl): Document new built-ins.
From-SVN: r63445
2003-02-26 04:02:14 +01:00
|
|
|
All these functions have corresponding versions
|
2001-08-18 23:02:44 +02:00
|
|
|
prefixed with @code{__builtin_}, which may be used even in strict C89
|
|
|
|
mode.
|
2000-11-10 02:46:00 +01:00
|
|
|
|
builtins.def (BUILT_IN_CABS, [...]): New builtins representing ISO C99's cabs, cabsf and cabsl.
* builtins.def (BUILT_IN_CABS, BUILT_IN_CABSF, BUILT_IN_CABSL):
New builtins representing ISO C99's cabs, cabsf and cabsl.
* builtins.c (expand_builtin_fabs): New function.
(expand_builtin_cabs): New function.
(expand_builtin): Expand BUILT_IN_FABS{,F,L} and BUILT_IN_CABS{,F,L}
using expand_builtin_fabs and expand_builtin_cabs respectively.
* doc/extend.texi: Document new cabs, cabsf and cabsl builtins.
* gcc.dg/builtins-16.c: New test case.
From-SVN: r67368
2003-06-03 13:27:23 +02:00
|
|
|
The ISO C99 functions
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
@code{_Exit}, @code{acoshf}, @code{acoshl}, @code{acosh}, @code{asinhf},
|
|
|
|
@code{asinhl}, @code{asinh}, @code{atanhf}, @code{atanhl}, @code{atanh},
|
builtin-types.def (BT_FN_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE, [...]): New.
* builtin-types.def
(BT_FN_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE_COMPLEX_LONGDOUBLE,
BT_FN_COMPLEX_DOUBLE_COMPLEX_DOUBLE_COMPLEX_DOUBLE,
BT_FN_COMPLEX_FLOAT_COMPLEX_FLOAT_COMPLEX_FLOAT): New.
* builtins.def (BUILT_IN_CACOS, BUILT_IN_CACOSF, BUILT_IN_CACOSH,
BUILT_IN_CACOSHF, BUILT_IN_CACOSHL, BUILT_IN_CACOSL,
BUILT_IN_CARG, BUILT_IN_CARGF, BUILT_IN_CARGL, BUILT_IN_CASIN,
BUILT_IN_CASINF, BUILT_IN_CASINH, BUILT_IN_CASINHF,
BUILT_IN_CASINHL, BUILT_IN_CASINL, BUILT_IN_CATAN,
BUILT_IN_CATANF, BUILT_IN_CATANH, BUILT_IN_CATANHF,
BUILT_IN_CATANHL, BUILT_IN_CATANL, BUILT_IN_CCOS, BUILT_IN_CCOSF,
BUILT_IN_CCOSH, BUILT_IN_CCOSHF, BUILT_IN_CCOSHL, BUILT_IN_CCOSL,
BUILT_IN_CEXP, BUILT_IN_CEXPF, BUILT_IN_CEXPL, BUILT_IN_CPOW,
BUILT_IN_CPOWF, BUILT_IN_CPOWL, BUILT_IN_CPROJ, BUILT_IN_CPROJF,
BUILT_IN_CPROJL, BUILT_IN_CSIN, BUILT_IN_CSINF, BUILT_IN_CSINH,
BUILT_IN_CSINHF, BUILT_IN_CSINHL, BUILT_IN_CSINL, BUILT_IN_CSQRT,
BUILT_IN_CSQRTF, BUILT_IN_CSQRTL, BUILT_IN_CTAN, BUILT_IN_CTANF,
BUILT_IN_CTANH, BUILT_IN_CTANHF, BUILT_IN_CTANHL, BUILT_IN_CTANL):
New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more _Complex tests.
* gcc.dg/torture/builtin-attr-1.c: Likewise.
From-SVN: r71226
2003-09-09 05:29:18 +02:00
|
|
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@code{cabsf}, @code{cabsl}, @code{cabs}, @code{cacosf}, @code{cacoshf},
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@code{cacoshl}, @code{cacosh}, @code{cacosl}, @code{cacos},
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@code{cargf}, @code{cargl}, @code{carg}, @code{casinf}, @code{casinhf},
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@code{casinhl}, @code{casinh}, @code{casinl}, @code{casin},
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@code{catanf}, @code{catanhf}, @code{catanhl}, @code{catanh},
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@code{catanl}, @code{catan}, @code{cbrtf}, @code{cbrtl}, @code{cbrt},
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@code{ccosf}, @code{ccoshf}, @code{ccoshl}, @code{ccosh}, @code{ccosl},
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@code{ccos}, @code{cexpf}, @code{cexpl}, @code{cexp}, @code{cimagf},
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2004-03-25 18:55:13 +01:00
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@code{cimagl}, @code{cimag}, @code{conjf}, @code{conjl}, @code{conj},
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@code{copysignf}, @code{copysignl}, @code{copysign}, @code{cpowf},
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@code{cpowl}, @code{cpow}, @code{cprojf}, @code{cprojl}, @code{cproj},
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@code{crealf}, @code{creall}, @code{creal}, @code{csinf}, @code{csinhf},
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@code{csinhl}, @code{csinh}, @code{csinl}, @code{csin}, @code{csqrtf},
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@code{csqrtl}, @code{csqrt}, @code{ctanf}, @code{ctanhf}, @code{ctanhl},
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@code{ctanh}, @code{ctanl}, @code{ctan}, @code{erfcf}, @code{erfcl},
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@code{erfc}, @code{erff}, @code{erfl}, @code{erf}, @code{exp2f},
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@code{exp2l}, @code{exp2}, @code{expm1f}, @code{expm1l}, @code{expm1},
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@code{fdimf}, @code{fdiml}, @code{fdim}, @code{fmaf}, @code{fmal},
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@code{fmaxf}, @code{fmaxl}, @code{fmax}, @code{fma}, @code{fminf},
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@code{fminl}, @code{fmin}, @code{hypotf}, @code{hypotl}, @code{hypot},
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@code{ilogbf}, @code{ilogbl}, @code{ilogb}, @code{imaxabs},
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2004-03-27 06:29:40 +01:00
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@code{isblank}, @code{iswblank}, @code{lgammaf}, @code{lgammal},
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@code{lgamma}, @code{llabs}, @code{llrintf}, @code{llrintl},
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@code{llrint}, @code{llroundf}, @code{llroundl}, @code{llround},
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@code{log1pf}, @code{log1pl}, @code{log1p}, @code{log2f}, @code{log2l},
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@code{log2}, @code{logbf}, @code{logbl}, @code{logb}, @code{lrintf},
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@code{lrintl}, @code{lrint}, @code{lroundf}, @code{lroundl},
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@code{lround}, @code{nearbyintf}, @code{nearbyintl}, @code{nearbyint},
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2004-03-25 18:55:13 +01:00
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@code{nextafterf}, @code{nextafterl}, @code{nextafter},
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@code{nexttowardf}, @code{nexttowardl}, @code{nexttoward},
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@code{remainderf}, @code{remainderl}, @code{remainder}, @code{remquof},
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@code{remquol}, @code{remquo}, @code{rintf}, @code{rintl}, @code{rint},
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@code{roundf}, @code{roundl}, @code{round}, @code{scalblnf},
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@code{scalblnl}, @code{scalbln}, @code{scalbnf}, @code{scalbnl},
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@code{scalbn}, @code{snprintf}, @code{tgammaf}, @code{tgammal},
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@code{tgamma}, @code{truncf}, @code{truncl}, @code{trunc},
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@code{vfscanf}, @code{vscanf}, @code{vsnprintf} and @code{vsscanf}
|
re PR c++/9367 (error: nonnull argument with extern "C" snprintf prototype)
PR c++/9367
* builtin-types.def (DEF_FUNCTION_TYPE_VAR_3): New macro.
(BT_FN_INT_CONST_STRING_VALIST_ARG,
BT_FN_INT_STRING_CONST_STRING_VALIST_ARG,
BT_FN_INT_CONST_STRING_CONST_STRING_VALIST_ARG,
BT_FN_INT_STRING_SIZE_CONST_STRING_VALIST_ARG,
BT_FN_INT_STRING_CONST_STRING_VAR,
BT_FN_INT_CONST_STRING_CONST_STRING_VAR,
BT_FN_INT_STRING_SIZE_CONST_STRING_VAR): New built-in types.
* builtin-attrs.def (ATTR_NONNULL_1, ATTR_NONNULL_2,
ATTR_NONNULL_3): Also include the nothrow attribute.
(sprintf, scanf, sscanf, vprintf, vsprintf, snprintf,
vsnprintf, vscanf, vsscanf): Don't define attributes here.
* builtins.def (putchar, puts): Make full C89 built-ins.
(snprintf, sprintf, scanf, sscanf, vprintf, vscanf,
vsscanf, vsnprintf, vsprintf): New built-ins.
* c-common.c (c_common_nodes_and_builtins): Handle new macro
DEF_FUNCTION_TYPE_VAR_3.
* doc/extend.texi: Document these new built-in functions.
* java/builtins.c (builtin_type): Handle DEF_FUNCTION_TYPE_VAR_3.
(initialize_builtins): Handle DEF_FUNCTION_TYPE_VAR_3.
* g++.old-deja/g++.other/builtins10.C: New test for PR 9367.
* gcc.dg/format/attr-5.c: Handle new conflicting types warning.
From-SVN: r63650
2003-03-02 02:34:34 +01:00
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are handled as built-in functions
|
builtins.def (DEF_LIB_ALWAYS_BUILTIN, [...]): Delete.
* builtins.def (DEF_LIB_ALWAYS_BUILTIN, DEF_UNUSED_BUILTIN): Delete.
(abs, labs, fabs, fabsf, fabsl, abort, exit, _exit, _Exit): Use
the appropriate macro to define built-in function.
(fmod,fmodf,fmodl): New built-in functions.
* java/decl.c (java_init_decl_processing): Get soft_fmod_node from
built_in_decls[BUILT_IN_FMOD] rather than define it ourselves.
* doc/extend.texi (fmod,fmodf,fmodl): Document new built-ins.
From-SVN: r63445
2003-02-26 04:02:14 +01:00
|
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except in strict ISO C90 mode (@option{-ansi} or @option{-std=c89}).
|
builtin-types.def (BT_FN_FLOAT_FLOAT_FLOAT): New built-in type.
* builtin-types.def (BT_FN_FLOAT_FLOAT_FLOAT): New built-in type.
(BT_FN_LONG_DOUBLE_LONG_DOUBLE_LONG_DOUBLE): Likewise.
(BT_FN_DOUBLE_DOUBLE_DOUBLE): Likewise.
* builtins.def: Define pow, powf, powl, atan2, atan2f and atan2l
builtin functions (and their __builtin_* variants).
* builtins.c (mathfn_built_in): Handle missing log{,f,l} cases.
(expand_builtin): Don't expand log{,f,l}, pow{,f,l} or atan2{,f,l}
when not optimizing.
* doc/extend.texi: Document new pow and atan2 builtins, and
their float and long double variants. Realphabetize builtins.
* testsuite/gcc.dg/builtins-4.c: New test case.
From-SVN: r62551
2003-02-07 23:37:57 +01:00
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builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
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There are also built-in versions of the ISO C99 functions
|
|
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@code{acosf}, @code{acosl}, @code{asinf}, @code{asinl}, @code{atan2f},
|
builtins.def: Defome atan...
* builtins.def: Defome atan, atanf, atanl, tan, tanf and tanl
builtin functions (and their __builtin_* variants).
* builtins.c (mathfn_built_in): Handle tan{,f,l} and atan{,f,l}.
(expand_builtin): Don't expand tan{,f,l} or atan{,f,l} when not
optimizing.
* doc/extend.texi: Document new tan and atan builtins, and
their float and long double variants.
* gcc.dg/builtins-1.c: Add tests for tan and atan.
* gcc.dg/builtins-4.c: Add test for fmod.
From-SVN: r67137
2003-05-23 22:45:40 +02:00
|
|
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@code{atan2l}, @code{atanf}, @code{atanl}, @code{ceilf}, @code{ceill},
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
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@code{cosf}, @code{coshf}, @code{coshl}, @code{cosl}, @code{expf},
|
|
|
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@code{expl}, @code{fabsf}, @code{fabsl}, @code{floorf}, @code{floorl},
|
builtin-types.def (BT_INT_PTR, [...]): New.
* builtin-types.def (BT_INT_PTR, BT_FLOAT_PTR, BT_DOUBLE_PTR,
BT_LONGDOUBLE_PTR, BT_FN_FLOAT_FLOAT_FLOATPTR,
BT_FN_DOUBLE_DOUBLE_DOUBLEPTR,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLEPTR,
BT_FN_FLOAT_FLOAT_INTPTR, BT_FN_DOUBLE_DOUBLE_INTPTR,
BT_FN_LONGDOUBLE_LONGDOUBLE_INTPTR,
BT_FN_FLOAT_FLOAT_FLOAT_INTPTR, BT_FN_DOUBLE_DOUBLE_DOUBLE_INTPTR,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_INTPTR,
BT_FN_VOID_FLOAT_FLOATPTR_FLOATPTR,
BT_FN_VOID_DOUBLE_DOUBLEPTR_DOUBLEPTR,
BT_FN_VOID_LONGDOUBLE_LONGDOUBLEPTR_LONGDOUBLEPTR): New.
* builtins.def (BUILT_IN_FREXP, BUILT_IN_FREXPF, BUILT_IN_FREXPL,
BUILT_IN_MODF, BUILT_IN_MODFF, BUILT_IN_MODFL, BUILT_IN_REMQUO,
BUILT_IN_REMQUOF, BUILT_IN_REMQUOL, BUILT_IN_SINCOS,
BUILT_IN_SINCOSF, BUILT_IN_SINCOSL): New.
* tree.c: Assign new type_nodes.
* tree.h (tree_index): Add TI_FLOAT_PTR_TYPE, TI_DOUBLE_PTR_TYPE,
TI_LONG_DOUBLE_PTR_TYPE, TI_INTEGER_PTR_TYPE.
(float_ptr_type_node, double_ptr_type_node,
long_double_ptr_type_node, integer_ptr_type_node): New type_nodes.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add new builtin cases.
From-SVN: r70890
2003-08-29 00:00:45 +02:00
|
|
|
@code{fmodf}, @code{fmodl}, @code{frexpf}, @code{frexpl}, @code{ldexpf},
|
|
|
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@code{ldexpl}, @code{log10f}, @code{log10l}, @code{logf}, @code{logl},
|
|
|
|
@code{modfl}, @code{modf}, @code{powf}, @code{powl}, @code{sinf},
|
|
|
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@code{sinhf}, @code{sinhl}, @code{sinl}, @code{sqrtf}, @code{sqrtl},
|
|
|
|
@code{tanf}, @code{tanhf}, @code{tanhl} and @code{tanl}
|
builtin-types.def (BT_FN_FLOAT_FLOAT_FLOAT): New built-in type.
* builtin-types.def (BT_FN_FLOAT_FLOAT_FLOAT): New built-in type.
(BT_FN_LONG_DOUBLE_LONG_DOUBLE_LONG_DOUBLE): Likewise.
(BT_FN_DOUBLE_DOUBLE_DOUBLE): Likewise.
* builtins.def: Define pow, powf, powl, atan2, atan2f and atan2l
builtin functions (and their __builtin_* variants).
* builtins.c (mathfn_built_in): Handle missing log{,f,l} cases.
(expand_builtin): Don't expand log{,f,l}, pow{,f,l} or atan2{,f,l}
when not optimizing.
* doc/extend.texi: Document new pow and atan2 builtins, and
their float and long double variants. Realphabetize builtins.
* testsuite/gcc.dg/builtins-4.c: New test case.
From-SVN: r62551
2003-02-07 23:37:57 +01:00
|
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that are recognized in any mode since ISO C90 reserves these names for
|
|
|
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the purpose to which ISO C99 puts them. All these functions have
|
|
|
|
corresponding versions prefixed with @code{__builtin_}.
|
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2004-03-27 06:29:40 +01:00
|
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The ISO C94 functions
|
|
|
|
@code{iswalnum}, @code{iswalpha}, @code{iswcntrl}, @code{iswdigit},
|
|
|
|
@code{iswgraph}, @code{iswlower}, @code{iswprint}, @code{iswpunct},
|
|
|
|
@code{iswspace}, @code{iswupper}, @code{iswxdigit}, @code{towlower} and
|
|
|
|
@code{towupper}
|
|
|
|
are handled as built-in functions
|
|
|
|
except in strict ISO C90 mode (@option{-ansi} or @option{-std=c89}).
|
|
|
|
|
builtin-types.def (BT_FN_INT_FLOAT, [...]): New.
* builtin-types.def (BT_FN_INT_FLOAT, BT_FN_INT_DOUBLE,
BT_FN_INT_LONGDOUBLE, BT_FN_LONG_FLOAT, BT_FN_LONG_DOUBLE,
BT_FN_LONG_LONGDOUBLE, BT_FN_LONGLONG_FLOAT,
BT_FN_LONGLONG_DOUBLE, BT_FN_LONGLONG_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_LONGDOUBLE, BT_FN_DOUBLE_DOUBLE_LONGDOUBLE,
BT_FN_FLOAT_FLOAT_INT, BT_FN_DOUBLE_DOUBLE_INT,
BT_FN_LONGDOUBLE_LONGDOUBLE_INT, BT_FN_FLOAT_FLOAT_LONG,
BT_FN_DOUBLE_DOUBLE_LONG, BT_FN_LONGDOUBLE_LONGDOUBLE_LONG,
BT_FN_FLOAT_FLOAT_FLOAT_FLOAT, BT_FN_DOUBLE_DOUBLE_DOUBLE_DOUBLE,
BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE): New.
* builtins.def (BUILT_IN_ACOS, BUILT_IN_ACOSF, BUILT_IN_ACOSH,
BUILT_IN_ACOSHF, BUILT_IN_ACOSHL, BUILT_IN_ACOSL, BUILT_IN_ASIN,
BUILT_IN_ASINF, BUILT_IN_ASINH, BUILT_IN_ASINHF, BUILT_IN_ASINHL,
BUILT_IN_ASINL, BUILT_IN_ATANH, BUILT_IN_ATANHF, BUILT_IN_ATANHL,
BUILT_IN_CBRT, BUILT_IN_CBRTF, BUILT_IN_CBRTL, BUILT_IN_COPYSIGN,
BUILT_IN_COPYSIGNF, BUILT_IN_COPYSIGNL, BUILT_IN_COSH,
BUILT_IN_COSHF, BUILT_IN_COSHL, BUILT_IN_DREM, BUILT_IN_DREMF,
BUILT_IN_DREML, BUILT_IN_EXP10, BUILT_IN_EXP10F, BUILT_IN_EXP10L,
BUILT_IN_EXP2, BUILT_IN_EXP2F, BUILT_IN_EXP2L, BUILT_IN_EXPM1,
BUILT_IN_EXPM1F, BUILT_IN_EXPM1L, BUILT_IN_FDIM, BUILT_IN_FDIMF,
BUILT_IN_FDIML, BUILT_IN_FMA, BUILT_IN_FMAF, BUILT_IN_FMAL,
BUILT_IN_FMAX, BUILT_IN_FMAXF, BUILT_IN_FMAXL, BUILT_IN_FMIN,
BUILT_IN_FMINF, BUILT_IN_FMINL, BUILT_IN_HYPOT, BUILT_IN_HYPOTF,
BUILT_IN_HYPOTL, BUILT_IN_ILOGB, BUILT_IN_ILOGBF, BUILT_IN_ILOGBL,
BUILT_IN_LDEXP, BUILT_IN_LDEXPF, BUILT_IN_LDEXPL, BUILT_IN_LLRINT,
BUILT_IN_LLRINTF, BUILT_IN_LLRINTL, BUILT_IN_LLROUND,
BUILT_IN_LLROUNDF, BUILT_IN_LLROUNDL, BUILT_IN_LOG10,
BUILT_IN_LOG10F, BUILT_IN_LOG10L, BUILT_IN_LOG1P, BUILT_IN_LOG1PF,
BUILT_IN_LOG1PL, BUILT_IN_LOG2, BUILT_IN_LOG2F, BUILT_IN_LOG2L,
BUILT_IN_LOGB, BUILT_IN_LOGBF, BUILT_IN_LOGBL, BUILT_IN_LRINT,
BUILT_IN_LRINTF, BUILT_IN_LRINTL, BUILT_IN_LROUND,
BUILT_IN_LROUNDF, BUILT_IN_LROUNDL, BUILT_IN_NEXTAFTER,
BUILT_IN_NEXTAFTERF, BUILT_IN_NEXTAFTERL, BUILT_IN_NEXTTOWARD,
BUILT_IN_NEXTTOWARDF, BUILT_IN_NEXTTOWARDL, BUILT_IN_POW10,
BUILT_IN_POW10F, BUILT_IN_POW10L, BUILT_IN_REMAINDER,
BUILT_IN_REMAINDERF, BUILT_IN_REMAINDERL, BUILT_IN_RINT,
BUILT_IN_RINTF, BUILT_IN_RINTL, BUILT_IN_SCALB, BUILT_IN_SCALBF,
BUILT_IN_SCALBL, BUILT_IN_SCALBLN, BUILT_IN_SCALBLNF,
BUILT_IN_SCALBLNL, BUILT_IN_SCALBN, BUILT_IN_SCALBNF,
BUILT_IN_SCALBNL, BUILT_IN_SINH, BUILT_IN_SINHF, BUILT_IN_SINHL,
BUILT_IN_TANH, BUILT_IN_TANHF, BUILT_IN_TANHL): New.
* doc/extend.texi: Document new builtins.
testsuite:
* gcc.dg/builtins-1.c: Add more math builtin tests.
* gcc.dg/torture/builtin-attr-1.c: New test.
From-SVN: r70886
2003-08-28 21:41:16 +02:00
|
|
|
The ISO C90 functions
|
|
|
|
@code{abort}, @code{abs}, @code{acos}, @code{asin}, @code{atan2},
|
|
|
|
@code{atan}, @code{calloc}, @code{ceil}, @code{cosh}, @code{cos},
|
|
|
|
@code{exit}, @code{exp}, @code{fabs}, @code{floor}, @code{fmod},
|
2004-03-25 18:55:13 +01:00
|
|
|
@code{fprintf}, @code{fputs}, @code{frexp}, @code{fscanf},
|
|
|
|
@code{isalnum}, @code{isalpha}, @code{iscntrl}, @code{isdigit},
|
|
|
|
@code{isgraph}, @code{islower}, @code{isprint}, @code{ispunct},
|
|
|
|
@code{isspace}, @code{isupper}, @code{isxdigit}, @code{tolower},
|
|
|
|
@code{toupper}, @code{labs}, @code{ldexp}, @code{log10}, @code{log},
|
|
|
|
@code{malloc}, @code{memcmp}, @code{memcpy}, @code{memset}, @code{modf},
|
|
|
|
@code{pow}, @code{printf}, @code{putchar}, @code{puts}, @code{scanf},
|
|
|
|
@code{sinh}, @code{sin}, @code{snprintf}, @code{sprintf}, @code{sqrt},
|
|
|
|
@code{sscanf}, @code{strcat}, @code{strchr}, @code{strcmp},
|
|
|
|
@code{strcpy}, @code{strcspn}, @code{strlen}, @code{strncat},
|
|
|
|
@code{strncmp}, @code{strncpy}, @code{strpbrk}, @code{strrchr},
|
|
|
|
@code{strspn}, @code{strstr}, @code{tanh}, @code{tan}, @code{vfprintf},
|
|
|
|
@code{vprintf} and @code{vsprintf}
|
re PR c++/9367 (error: nonnull argument with extern "C" snprintf prototype)
PR c++/9367
* builtin-types.def (DEF_FUNCTION_TYPE_VAR_3): New macro.
(BT_FN_INT_CONST_STRING_VALIST_ARG,
BT_FN_INT_STRING_CONST_STRING_VALIST_ARG,
BT_FN_INT_CONST_STRING_CONST_STRING_VALIST_ARG,
BT_FN_INT_STRING_SIZE_CONST_STRING_VALIST_ARG,
BT_FN_INT_STRING_CONST_STRING_VAR,
BT_FN_INT_CONST_STRING_CONST_STRING_VAR,
BT_FN_INT_STRING_SIZE_CONST_STRING_VAR): New built-in types.
* builtin-attrs.def (ATTR_NONNULL_1, ATTR_NONNULL_2,
ATTR_NONNULL_3): Also include the nothrow attribute.
(sprintf, scanf, sscanf, vprintf, vsprintf, snprintf,
vsnprintf, vscanf, vsscanf): Don't define attributes here.
* builtins.def (putchar, puts): Make full C89 built-ins.
(snprintf, sprintf, scanf, sscanf, vprintf, vscanf,
vsscanf, vsnprintf, vsprintf): New built-ins.
* c-common.c (c_common_nodes_and_builtins): Handle new macro
DEF_FUNCTION_TYPE_VAR_3.
* doc/extend.texi: Document these new built-in functions.
* java/builtins.c (builtin_type): Handle DEF_FUNCTION_TYPE_VAR_3.
(initialize_builtins): Handle DEF_FUNCTION_TYPE_VAR_3.
* g++.old-deja/g++.other/builtins10.C: New test for PR 9367.
* gcc.dg/format/attr-5.c: Handle new conflicting types warning.
From-SVN: r63650
2003-03-02 02:34:34 +01:00
|
|
|
are all recognized as built-in functions unless
|
builtin-types.def (BT_FN_FLOAT_FLOAT_FLOAT): New built-in type.
* builtin-types.def (BT_FN_FLOAT_FLOAT_FLOAT): New built-in type.
(BT_FN_LONG_DOUBLE_LONG_DOUBLE_LONG_DOUBLE): Likewise.
(BT_FN_DOUBLE_DOUBLE_DOUBLE): Likewise.
* builtins.def: Define pow, powf, powl, atan2, atan2f and atan2l
builtin functions (and their __builtin_* variants).
* builtins.c (mathfn_built_in): Handle missing log{,f,l} cases.
(expand_builtin): Don't expand log{,f,l}, pow{,f,l} or atan2{,f,l}
when not optimizing.
* doc/extend.texi: Document new pow and atan2 builtins, and
their float and long double variants. Realphabetize builtins.
* testsuite/gcc.dg/builtins-4.c: New test case.
From-SVN: r62551
2003-02-07 23:37:57 +01:00
|
|
|
@option{-fno-builtin} is specified (or @option{-fno-builtin-@var{function}}
|
|
|
|
is specified for an individual function). All of these functions have
|
2002-12-16 19:23:00 +01:00
|
|
|
corresponding versions prefixed with @code{__builtin_}.
|
2001-08-18 23:02:44 +02:00
|
|
|
|
|
|
|
GCC provides built-in versions of the ISO C99 floating point comparison
|
|
|
|
macros that avoid raising exceptions for unordered operands. They have
|
|
|
|
the same names as the standard macros ( @code{isgreater},
|
|
|
|
@code{isgreaterequal}, @code{isless}, @code{islessequal},
|
|
|
|
@code{islessgreater}, and @code{isunordered}) , with @code{__builtin_}
|
|
|
|
prefixed. We intend for a library implementor to be able to simply
|
|
|
|
@code{#define} each standard macro to its built-in equivalent.
|
1998-12-29 12:36:22 +01:00
|
|
|
|
2001-12-08 23:34:54 +01:00
|
|
|
@deftypefn {Built-in Function} int __builtin_types_compatible_p (@var{type1}, @var{type2})
|
|
|
|
|
|
|
|
You can use the built-in function @code{__builtin_types_compatible_p} to
|
|
|
|
determine whether two types are the same.
|
|
|
|
|
|
|
|
This built-in function returns 1 if the unqualified versions of the
|
|
|
|
types @var{type1} and @var{type2} (which are types, not expressions) are
|
|
|
|
compatible, 0 otherwise. The result of this built-in function can be
|
|
|
|
used in integer constant expressions.
|
|
|
|
|
|
|
|
This built-in function ignores top level qualifiers (e.g., @code{const},
|
|
|
|
@code{volatile}). For example, @code{int} is equivalent to @code{const
|
|
|
|
int}.
|
|
|
|
|
|
|
|
The type @code{int[]} and @code{int[5]} are compatible. On the other
|
|
|
|
hand, @code{int} and @code{char *} are not compatible, even if the size
|
|
|
|
of their types, on the particular architecture are the same. Also, the
|
|
|
|
amount of pointer indirection is taken into account when determining
|
|
|
|
similarity. Consequently, @code{short *} is not similar to
|
|
|
|
@code{short **}. Furthermore, two types that are typedefed are
|
|
|
|
considered compatible if their underlying types are compatible.
|
|
|
|
|
2004-01-07 23:24:44 +01:00
|
|
|
An @code{enum} type is not considered to be compatible with another
|
|
|
|
@code{enum} type even if both are compatible with the same integer
|
|
|
|
type; this is what the C standard specifies.
|
|
|
|
For example, @code{enum @{foo, bar@}} is not similar to
|
2001-12-08 23:34:54 +01:00
|
|
|
@code{enum @{hot, dog@}}.
|
|
|
|
|
|
|
|
You would typically use this function in code whose execution varies
|
|
|
|
depending on the arguments' types. For example:
|
|
|
|
|
|
|
|
@smallexample
|
2002-02-20 19:11:53 +01:00
|
|
|
#define foo(x) \
|
|
|
|
(@{ \
|
|
|
|
typeof (x) tmp; \
|
|
|
|
if (__builtin_types_compatible_p (typeof (x), long double)) \
|
|
|
|
tmp = foo_long_double (tmp); \
|
|
|
|
else if (__builtin_types_compatible_p (typeof (x), double)) \
|
|
|
|
tmp = foo_double (tmp); \
|
|
|
|
else if (__builtin_types_compatible_p (typeof (x), float)) \
|
|
|
|
tmp = foo_float (tmp); \
|
|
|
|
else \
|
|
|
|
abort (); \
|
|
|
|
tmp; \
|
2001-12-08 23:34:54 +01:00
|
|
|
@})
|
|
|
|
@end smallexample
|
|
|
|
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
@emph{Note:} This construct is only available for C@.
|
2001-12-08 23:34:54 +01:00
|
|
|
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} @var{type} __builtin_choose_expr (@var{const_exp}, @var{exp1}, @var{exp2})
|
|
|
|
|
|
|
|
You can use the built-in function @code{__builtin_choose_expr} to
|
|
|
|
evaluate code depending on the value of a constant expression. This
|
|
|
|
built-in function returns @var{exp1} if @var{const_exp}, which is a
|
|
|
|
constant expression that must be able to be determined at compile time,
|
|
|
|
is nonzero. Otherwise it returns 0.
|
|
|
|
|
|
|
|
This built-in function is analogous to the @samp{? :} operator in C,
|
|
|
|
except that the expression returned has its type unaltered by promotion
|
|
|
|
rules. Also, the built-in function does not evaluate the expression
|
|
|
|
that was not chosen. For example, if @var{const_exp} evaluates to true,
|
|
|
|
@var{exp2} is not evaluated even if it has side-effects.
|
|
|
|
|
|
|
|
This built-in function can return an lvalue if the chosen argument is an
|
|
|
|
lvalue.
|
|
|
|
|
|
|
|
If @var{exp1} is returned, the return type is the same as @var{exp1}'s
|
|
|
|
type. Similarly, if @var{exp2} is returned, its return type is the same
|
|
|
|
as @var{exp2}.
|
|
|
|
|
|
|
|
Example:
|
|
|
|
|
|
|
|
@smallexample
|
2002-09-04 19:35:59 +02:00
|
|
|
#define foo(x) \
|
|
|
|
__builtin_choose_expr ( \
|
|
|
|
__builtin_types_compatible_p (typeof (x), double), \
|
|
|
|
foo_double (x), \
|
|
|
|
__builtin_choose_expr ( \
|
|
|
|
__builtin_types_compatible_p (typeof (x), float), \
|
|
|
|
foo_float (x), \
|
|
|
|
/* @r{The void expression results in a compile-time error} \
|
|
|
|
@r{when assigning the result to something.} */ \
|
2001-12-08 23:34:54 +01:00
|
|
|
(void)0))
|
|
|
|
@end smallexample
|
|
|
|
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
@emph{Note:} This construct is only available for C@. Furthermore, the
|
2001-12-08 23:34:54 +01:00
|
|
|
unused expression (@var{exp1} or @var{exp2} depending on the value of
|
|
|
|
@var{const_exp}) may still generate syntax errors. This may change in
|
|
|
|
future revisions.
|
|
|
|
|
|
|
|
@end deftypefn
|
|
|
|
|
2001-06-13 00:40:00 +02:00
|
|
|
@deftypefn {Built-in Function} int __builtin_constant_p (@var{exp})
|
|
|
|
You can use the built-in function @code{__builtin_constant_p} to
|
1998-12-29 12:36:22 +01:00
|
|
|
determine if a value is known to be constant at compile-time and hence
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
that GCC can perform constant-folding on expressions involving that
|
1998-12-29 12:36:22 +01:00
|
|
|
value. The argument of the function is the value to test. The function
|
|
|
|
returns the integer 1 if the argument is known to be a compile-time
|
|
|
|
constant and 0 if it is not known to be a compile-time constant. A
|
|
|
|
return of 0 does not indicate that the value is @emph{not} a constant,
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
but merely that GCC cannot prove it is a constant with the specified
|
2001-06-13 00:40:00 +02:00
|
|
|
value of the @option{-O} option.
|
1998-12-29 12:36:22 +01:00
|
|
|
|
|
|
|
You would typically use this function in an embedded application where
|
|
|
|
memory was a critical resource. If you have some complex calculation,
|
|
|
|
you may want it to be folded if it involves constants, but need to call
|
|
|
|
a function if it does not. For example:
|
|
|
|
|
1999-01-01 13:34:39 +01:00
|
|
|
@smallexample
|
2001-05-31 06:27:52 +02:00
|
|
|
#define Scale_Value(X) \
|
|
|
|
(__builtin_constant_p (X) \
|
|
|
|
? ((X) * SCALE + OFFSET) : Scale (X))
|
1998-12-29 12:36:22 +01:00
|
|
|
@end smallexample
|
|
|
|
|
2001-06-13 00:40:00 +02:00
|
|
|
You may use this built-in function in either a macro or an inline
|
1998-12-29 12:36:22 +01:00
|
|
|
function. However, if you use it in an inlined function and pass an
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
argument of the function as the argument to the built-in, GCC will
|
1998-12-29 12:36:22 +01:00
|
|
|
never return 1 when you call the inline function with a string constant
|
2001-05-21 01:21:59 +02:00
|
|
|
or compound literal (@pxref{Compound Literals}) and will not return 1
|
1998-12-29 12:36:22 +01:00
|
|
|
when you pass a constant numeric value to the inline function unless you
|
2001-06-13 00:40:00 +02:00
|
|
|
specify the @option{-O} option.
|
2001-08-04 02:20:37 +02:00
|
|
|
|
|
|
|
You may also use @code{__builtin_constant_p} in initializers for static
|
|
|
|
data. For instance, you can write
|
|
|
|
|
|
|
|
@smallexample
|
2001-08-04 04:42:04 +02:00
|
|
|
static const int table[] = @{
|
2001-08-04 02:20:37 +02:00
|
|
|
__builtin_constant_p (EXPRESSION) ? (EXPRESSION) : -1,
|
2002-06-24 19:21:04 +02:00
|
|
|
/* @r{@dots{}} */
|
2001-08-04 04:42:04 +02:00
|
|
|
@};
|
2001-08-04 02:20:37 +02:00
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@noindent
|
|
|
|
This is an acceptable initializer even if @var{EXPRESSION} is not a
|
|
|
|
constant expression. GCC must be more conservative about evaluating the
|
|
|
|
built-in in this case, because it has no opportunity to perform
|
|
|
|
optimization.
|
|
|
|
|
|
|
|
Previous versions of GCC did not accept this built-in in data
|
|
|
|
initializers. The earliest version where it is completely safe is
|
|
|
|
3.0.1.
|
2001-06-13 00:40:00 +02:00
|
|
|
@end deftypefn
|
1998-12-29 12:36:22 +01:00
|
|
|
|
2001-06-13 00:40:00 +02:00
|
|
|
@deftypefn {Built-in Function} long __builtin_expect (long @var{exp}, long @var{c})
|
|
|
|
@opindex fprofile-arcs
|
2001-04-28 13:35:04 +02:00
|
|
|
You may use @code{__builtin_expect} to provide the compiler with
|
2000-04-17 18:49:00 +02:00
|
|
|
branch prediction information. In general, you should prefer to
|
2001-06-13 00:40:00 +02:00
|
|
|
use actual profile feedback for this (@option{-fprofile-arcs}), as
|
2000-04-17 18:49:00 +02:00
|
|
|
programmers are notoriously bad at predicting how their programs
|
2000-04-18 20:59:10 +02:00
|
|
|
actually perform. However, there are applications in which this
|
2000-04-17 18:49:00 +02:00
|
|
|
data is hard to collect.
|
|
|
|
|
|
|
|
The return value is the value of @var{exp}, which should be an
|
|
|
|
integral expression. The value of @var{c} must be a compile-time
|
2001-06-13 00:40:00 +02:00
|
|
|
constant. The semantics of the built-in are that it is expected
|
2000-04-17 18:49:00 +02:00
|
|
|
that @var{exp} == @var{c}. For example:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
if (__builtin_expect (x, 0))
|
|
|
|
foo ();
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@noindent
|
|
|
|
would indicate that we do not expect to call @code{foo}, since
|
|
|
|
we expect @code{x} to be zero. Since you are limited to integral
|
|
|
|
expressions for @var{exp}, you should use constructions such as
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
if (__builtin_expect (ptr != NULL, 1))
|
|
|
|
error ();
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@noindent
|
|
|
|
when testing pointer or floating-point values.
|
2001-06-13 00:40:00 +02:00
|
|
|
@end deftypefn
|
2000-04-17 18:49:00 +02:00
|
|
|
|
2002-01-28 21:07:01 +01:00
|
|
|
@deftypefn {Built-in Function} void __builtin_prefetch (const void *@var{addr}, ...)
|
2001-12-04 01:50:35 +01:00
|
|
|
This function is used to minimize cache-miss latency by moving data into
|
|
|
|
a cache before it is accessed.
|
|
|
|
You can insert calls to @code{__builtin_prefetch} into code for which
|
|
|
|
you know addresses of data in memory that is likely to be accessed soon.
|
|
|
|
If the target supports them, data prefetch instructions will be generated.
|
|
|
|
If the prefetch is done early enough before the access then the data will
|
|
|
|
be in the cache by the time it is accessed.
|
|
|
|
|
|
|
|
The value of @var{addr} is the address of the memory to prefetch.
|
2001-12-07 02:42:35 +01:00
|
|
|
There are two optional arguments, @var{rw} and @var{locality}.
|
2001-12-04 01:50:35 +01:00
|
|
|
The value of @var{rw} is a compile-time constant one or zero; one
|
2001-12-07 02:42:35 +01:00
|
|
|
means that the prefetch is preparing for a write to the memory address
|
|
|
|
and zero, the default, means that the prefetch is preparing for a read.
|
2001-12-04 01:50:35 +01:00
|
|
|
The value @var{locality} must be a compile-time constant integer between
|
|
|
|
zero and three. A value of zero means that the data has no temporal
|
|
|
|
locality, so it need not be left in the cache after the access. A value
|
|
|
|
of three means that the data has a high degree of temporal locality and
|
|
|
|
should be left in all levels of cache possible. Values of one and two
|
2001-12-07 02:42:35 +01:00
|
|
|
mean, respectively, a low or moderate degree of temporal locality. The
|
|
|
|
default is three.
|
2001-12-04 01:50:35 +01:00
|
|
|
|
|
|
|
@smallexample
|
|
|
|
for (i = 0; i < n; i++)
|
|
|
|
@{
|
|
|
|
a[i] = a[i] + b[i];
|
|
|
|
__builtin_prefetch (&a[i+j], 1, 1);
|
|
|
|
__builtin_prefetch (&b[i+j], 0, 1);
|
2002-06-24 19:21:04 +02:00
|
|
|
/* @r{@dots{}} */
|
2001-12-04 01:50:35 +01:00
|
|
|
@}
|
|
|
|
@end smallexample
|
|
|
|
|
2002-02-23 13:59:09 +01:00
|
|
|
Data prefetch does not generate faults if @var{addr} is invalid, but
|
2001-12-04 01:50:35 +01:00
|
|
|
the address expression itself must be valid. For example, a prefetch
|
|
|
|
of @code{p->next} will not fault if @code{p->next} is not a valid
|
|
|
|
address, but evaluation will fault if @code{p} is not a valid address.
|
|
|
|
|
|
|
|
If the target does not support data prefetch, the address expression
|
|
|
|
is evaluated if it includes side effects but no other code is generated
|
|
|
|
and GCC does not issue a warning.
|
|
|
|
@end deftypefn
|
|
|
|
|
2002-09-05 01:21:28 +02:00
|
|
|
@deftypefn {Built-in Function} double __builtin_huge_val (void)
|
|
|
|
Returns a positive infinity, if supported by the floating-point format,
|
|
|
|
else @code{DBL_MAX}. This function is suitable for implementing the
|
|
|
|
ISO C macro @code{HUGE_VAL}.
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} float __builtin_huge_valf (void)
|
|
|
|
Similar to @code{__builtin_huge_val}, except the return type is @code{float}.
|
|
|
|
@end deftypefn
|
|
|
|
|
2003-04-30 16:17:26 +02:00
|
|
|
@deftypefn {Built-in Function} {long double} __builtin_huge_vall (void)
|
2002-09-05 01:21:28 +02:00
|
|
|
Similar to @code{__builtin_huge_val}, except the return
|
|
|
|
type is @code{long double}.
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} double __builtin_inf (void)
|
|
|
|
Similar to @code{__builtin_huge_val}, except a warning is generated
|
|
|
|
if the target floating-point format does not support infinities.
|
|
|
|
This function is suitable for implementing the ISO C99 macro @code{INFINITY}.
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} float __builtin_inff (void)
|
|
|
|
Similar to @code{__builtin_inf}, except the return type is @code{float}.
|
|
|
|
@end deftypefn
|
|
|
|
|
2003-04-30 16:17:26 +02:00
|
|
|
@deftypefn {Built-in Function} {long double} __builtin_infl (void)
|
2002-09-05 01:21:28 +02:00
|
|
|
Similar to @code{__builtin_inf}, except the return
|
|
|
|
type is @code{long double}.
|
|
|
|
@end deftypefn
|
|
|
|
|
builtin-types.def (BT_FN_FLOAT_CONST_STRING): New.
gcc/
* builtin-types.def (BT_FN_FLOAT_CONST_STRING): New.
(BT_FN_DOUBLE_CONST_STRING, BT_FN_LONG_DOUBLE_CONST_STRING): New.
* builtins.def (__builtin_nan, __builtin_nanf, __builtin_nanl): New.
(__builtin_nans, __builtin_nansf, __builtin_nansl): New.
* builtins.c (fold_builtin_nan): New.
(fold_builtin): Call it.
* real.c (real_nan): Parse a non-empty string.
(round_for_format): Fix NaN significand truncation.
* real.h (real_nan): Return bool.
* doc/extend.texi: Document new builtins.
libstdc++/
* include/std/std_limits.h (__glibcpp_f32_QNaN_bytes,
__glibcpp_f32_has_QNaN, __glibcpp_f32_SNaN_bytes,
__glibcpp_f32_has_SNaN, __glibcpp_f64_QNaN_bytes,
__glibcpp_f64_has_QNaN, __glibcpp_f64_SNaN_bytes,
__glibcpp_f64_has_SNaN, __glibcpp_f80_QNaN_bytes,
__glibcpp_f80_has_QNaN, __glibcpp_f80_SNaN_bytes,
__glibcpp_f80_has_SNaN, __glibcpp_f96_QNaN_bytes,
__glibcpp_f96_has_QNaN, __glibcpp_f96_SNaN_bytes,
__glibcpp_f96_has_SNaN, __glibcpp_f128_QNaN_bytes,
__glibcpp_f128_has_QNaN, __glibcpp_f128_SNaN_bytes,
__glibcpp_f128_has_SNaN, __glibcpp_float_QNaN_bytes,
__glibcpp_float_has_QNaN, __glibcpp_float_SNaN_bytes,
__glibcpp_float_has_SNaN, __glibcpp_double_QNaN_bytes,
__glibcpp_double_has_QNaN, __glibcpp_double_SNaN_bytes,
__glibcpp_double_has_SNaN, __glibcpp_long_double_QNaN_bytes,
__glibcpp_long_double_has_QNaN, __glibcpp_long_double_SNaN_bytes,
__glibcpp_long_double_has_SNaN): Remove.
(__glibcpp_f128_is_iec559): True if IEEE.
(__glibcpp_float_QNaN, __glibcpp_float_SNaN): Remove.
(__glibcpp_double_QNaN, __glibcpp_double_SNaN): Remove.
(__glibcpp_long_double_QNaN, __glibcpp_long_double_SNaN): Remove.
(std::numeric_limits<float>::has_quiet_NaN): Use __builtin_nanf.
(std::numeric_limits<float>::has_signaling_NaN): Mirror has_quiet_NaN.
(std::numeric_limits<float>::quiet_NaN): Use __builtin_nanf.
(std::numeric_limits<float>::signaling_NaN): Use __builtin_nansf.
(std::numeric_limits<double>): Similarly.
(std::numeric_limits<long double>): Similarly.
* src/limits.cc (__glibcpp_float_QNaN, __glibcpp_float_SNaN): Remove.
(__glibcpp_double_QNaN, __glibcpp_double_SNaN): Remove.
(__glibcpp_long_double_QNaN, __glibcpp_long_double_SNaN): Remove.
* testsuite/18_support/numeric_limits.cc (test_infinity): New.
(test_denorm_min, test_qnan, test_is_iec559): New.
From-SVN: r57221
2002-09-17 03:28:50 +02:00
|
|
|
@deftypefn {Built-in Function} double __builtin_nan (const char *str)
|
|
|
|
This is an implementation of the ISO C99 function @code{nan}.
|
|
|
|
|
|
|
|
Since ISO C99 defines this function in terms of @code{strtod}, which we
|
2002-12-17 17:47:45 +01:00
|
|
|
do not implement, a description of the parsing is in order. The string
|
builtin-types.def (BT_FN_FLOAT_CONST_STRING): New.
gcc/
* builtin-types.def (BT_FN_FLOAT_CONST_STRING): New.
(BT_FN_DOUBLE_CONST_STRING, BT_FN_LONG_DOUBLE_CONST_STRING): New.
* builtins.def (__builtin_nan, __builtin_nanf, __builtin_nanl): New.
(__builtin_nans, __builtin_nansf, __builtin_nansl): New.
* builtins.c (fold_builtin_nan): New.
(fold_builtin): Call it.
* real.c (real_nan): Parse a non-empty string.
(round_for_format): Fix NaN significand truncation.
* real.h (real_nan): Return bool.
* doc/extend.texi: Document new builtins.
libstdc++/
* include/std/std_limits.h (__glibcpp_f32_QNaN_bytes,
__glibcpp_f32_has_QNaN, __glibcpp_f32_SNaN_bytes,
__glibcpp_f32_has_SNaN, __glibcpp_f64_QNaN_bytes,
__glibcpp_f64_has_QNaN, __glibcpp_f64_SNaN_bytes,
__glibcpp_f64_has_SNaN, __glibcpp_f80_QNaN_bytes,
__glibcpp_f80_has_QNaN, __glibcpp_f80_SNaN_bytes,
__glibcpp_f80_has_SNaN, __glibcpp_f96_QNaN_bytes,
__glibcpp_f96_has_QNaN, __glibcpp_f96_SNaN_bytes,
__glibcpp_f96_has_SNaN, __glibcpp_f128_QNaN_bytes,
__glibcpp_f128_has_QNaN, __glibcpp_f128_SNaN_bytes,
__glibcpp_f128_has_SNaN, __glibcpp_float_QNaN_bytes,
__glibcpp_float_has_QNaN, __glibcpp_float_SNaN_bytes,
__glibcpp_float_has_SNaN, __glibcpp_double_QNaN_bytes,
__glibcpp_double_has_QNaN, __glibcpp_double_SNaN_bytes,
__glibcpp_double_has_SNaN, __glibcpp_long_double_QNaN_bytes,
__glibcpp_long_double_has_QNaN, __glibcpp_long_double_SNaN_bytes,
__glibcpp_long_double_has_SNaN): Remove.
(__glibcpp_f128_is_iec559): True if IEEE.
(__glibcpp_float_QNaN, __glibcpp_float_SNaN): Remove.
(__glibcpp_double_QNaN, __glibcpp_double_SNaN): Remove.
(__glibcpp_long_double_QNaN, __glibcpp_long_double_SNaN): Remove.
(std::numeric_limits<float>::has_quiet_NaN): Use __builtin_nanf.
(std::numeric_limits<float>::has_signaling_NaN): Mirror has_quiet_NaN.
(std::numeric_limits<float>::quiet_NaN): Use __builtin_nanf.
(std::numeric_limits<float>::signaling_NaN): Use __builtin_nansf.
(std::numeric_limits<double>): Similarly.
(std::numeric_limits<long double>): Similarly.
* src/limits.cc (__glibcpp_float_QNaN, __glibcpp_float_SNaN): Remove.
(__glibcpp_double_QNaN, __glibcpp_double_SNaN): Remove.
(__glibcpp_long_double_QNaN, __glibcpp_long_double_SNaN): Remove.
* testsuite/18_support/numeric_limits.cc (test_infinity): New.
(test_denorm_min, test_qnan, test_is_iec559): New.
From-SVN: r57221
2002-09-17 03:28:50 +02:00
|
|
|
is parsed as by @code{strtol}; that is, the base is recognized by
|
|
|
|
leading @samp{0} or @samp{0x} prefixes. The number parsed is placed
|
|
|
|
in the significand such that the least significant bit of the number
|
c-tree.texi, [...]: Remove trailing whitespace.
* doc/c-tree.texi, doc/cpp.texi, doc/extend.texi,
doc/frontends.texi, doc/gcov.texi, doc/gty.texi, doc/install.texi,
doc/invoke.texi, doc/libgcc.texi, doc/md.texi, doc/rtl.texi,
doc/sourcebuild.texi, doc/standards.texi, doc/tm.texi,
doc/trouble.texi: Remove trailing whitespace.
From-SVN: r76098
2004-01-18 12:57:17 +01:00
|
|
|
is at the least significant bit of the significand. The number is
|
builtin-types.def (BT_FN_FLOAT_CONST_STRING): New.
gcc/
* builtin-types.def (BT_FN_FLOAT_CONST_STRING): New.
(BT_FN_DOUBLE_CONST_STRING, BT_FN_LONG_DOUBLE_CONST_STRING): New.
* builtins.def (__builtin_nan, __builtin_nanf, __builtin_nanl): New.
(__builtin_nans, __builtin_nansf, __builtin_nansl): New.
* builtins.c (fold_builtin_nan): New.
(fold_builtin): Call it.
* real.c (real_nan): Parse a non-empty string.
(round_for_format): Fix NaN significand truncation.
* real.h (real_nan): Return bool.
* doc/extend.texi: Document new builtins.
libstdc++/
* include/std/std_limits.h (__glibcpp_f32_QNaN_bytes,
__glibcpp_f32_has_QNaN, __glibcpp_f32_SNaN_bytes,
__glibcpp_f32_has_SNaN, __glibcpp_f64_QNaN_bytes,
__glibcpp_f64_has_QNaN, __glibcpp_f64_SNaN_bytes,
__glibcpp_f64_has_SNaN, __glibcpp_f80_QNaN_bytes,
__glibcpp_f80_has_QNaN, __glibcpp_f80_SNaN_bytes,
__glibcpp_f80_has_SNaN, __glibcpp_f96_QNaN_bytes,
__glibcpp_f96_has_QNaN, __glibcpp_f96_SNaN_bytes,
__glibcpp_f96_has_SNaN, __glibcpp_f128_QNaN_bytes,
__glibcpp_f128_has_QNaN, __glibcpp_f128_SNaN_bytes,
__glibcpp_f128_has_SNaN, __glibcpp_float_QNaN_bytes,
__glibcpp_float_has_QNaN, __glibcpp_float_SNaN_bytes,
__glibcpp_float_has_SNaN, __glibcpp_double_QNaN_bytes,
__glibcpp_double_has_QNaN, __glibcpp_double_SNaN_bytes,
__glibcpp_double_has_SNaN, __glibcpp_long_double_QNaN_bytes,
__glibcpp_long_double_has_QNaN, __glibcpp_long_double_SNaN_bytes,
__glibcpp_long_double_has_SNaN): Remove.
(__glibcpp_f128_is_iec559): True if IEEE.
(__glibcpp_float_QNaN, __glibcpp_float_SNaN): Remove.
(__glibcpp_double_QNaN, __glibcpp_double_SNaN): Remove.
(__glibcpp_long_double_QNaN, __glibcpp_long_double_SNaN): Remove.
(std::numeric_limits<float>::has_quiet_NaN): Use __builtin_nanf.
(std::numeric_limits<float>::has_signaling_NaN): Mirror has_quiet_NaN.
(std::numeric_limits<float>::quiet_NaN): Use __builtin_nanf.
(std::numeric_limits<float>::signaling_NaN): Use __builtin_nansf.
(std::numeric_limits<double>): Similarly.
(std::numeric_limits<long double>): Similarly.
* src/limits.cc (__glibcpp_float_QNaN, __glibcpp_float_SNaN): Remove.
(__glibcpp_double_QNaN, __glibcpp_double_SNaN): Remove.
(__glibcpp_long_double_QNaN, __glibcpp_long_double_SNaN): Remove.
* testsuite/18_support/numeric_limits.cc (test_infinity): New.
(test_denorm_min, test_qnan, test_is_iec559): New.
From-SVN: r57221
2002-09-17 03:28:50 +02:00
|
|
|
truncated to fit the significand field provided. The significand is
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
forced to be a quiet NaN@.
|
builtin-types.def (BT_FN_FLOAT_CONST_STRING): New.
gcc/
* builtin-types.def (BT_FN_FLOAT_CONST_STRING): New.
(BT_FN_DOUBLE_CONST_STRING, BT_FN_LONG_DOUBLE_CONST_STRING): New.
* builtins.def (__builtin_nan, __builtin_nanf, __builtin_nanl): New.
(__builtin_nans, __builtin_nansf, __builtin_nansl): New.
* builtins.c (fold_builtin_nan): New.
(fold_builtin): Call it.
* real.c (real_nan): Parse a non-empty string.
(round_for_format): Fix NaN significand truncation.
* real.h (real_nan): Return bool.
* doc/extend.texi: Document new builtins.
libstdc++/
* include/std/std_limits.h (__glibcpp_f32_QNaN_bytes,
__glibcpp_f32_has_QNaN, __glibcpp_f32_SNaN_bytes,
__glibcpp_f32_has_SNaN, __glibcpp_f64_QNaN_bytes,
__glibcpp_f64_has_QNaN, __glibcpp_f64_SNaN_bytes,
__glibcpp_f64_has_SNaN, __glibcpp_f80_QNaN_bytes,
__glibcpp_f80_has_QNaN, __glibcpp_f80_SNaN_bytes,
__glibcpp_f80_has_SNaN, __glibcpp_f96_QNaN_bytes,
__glibcpp_f96_has_QNaN, __glibcpp_f96_SNaN_bytes,
__glibcpp_f96_has_SNaN, __glibcpp_f128_QNaN_bytes,
__glibcpp_f128_has_QNaN, __glibcpp_f128_SNaN_bytes,
__glibcpp_f128_has_SNaN, __glibcpp_float_QNaN_bytes,
__glibcpp_float_has_QNaN, __glibcpp_float_SNaN_bytes,
__glibcpp_float_has_SNaN, __glibcpp_double_QNaN_bytes,
__glibcpp_double_has_QNaN, __glibcpp_double_SNaN_bytes,
__glibcpp_double_has_SNaN, __glibcpp_long_double_QNaN_bytes,
__glibcpp_long_double_has_QNaN, __glibcpp_long_double_SNaN_bytes,
__glibcpp_long_double_has_SNaN): Remove.
(__glibcpp_f128_is_iec559): True if IEEE.
(__glibcpp_float_QNaN, __glibcpp_float_SNaN): Remove.
(__glibcpp_double_QNaN, __glibcpp_double_SNaN): Remove.
(__glibcpp_long_double_QNaN, __glibcpp_long_double_SNaN): Remove.
(std::numeric_limits<float>::has_quiet_NaN): Use __builtin_nanf.
(std::numeric_limits<float>::has_signaling_NaN): Mirror has_quiet_NaN.
(std::numeric_limits<float>::quiet_NaN): Use __builtin_nanf.
(std::numeric_limits<float>::signaling_NaN): Use __builtin_nansf.
(std::numeric_limits<double>): Similarly.
(std::numeric_limits<long double>): Similarly.
* src/limits.cc (__glibcpp_float_QNaN, __glibcpp_float_SNaN): Remove.
(__glibcpp_double_QNaN, __glibcpp_double_SNaN): Remove.
(__glibcpp_long_double_QNaN, __glibcpp_long_double_SNaN): Remove.
* testsuite/18_support/numeric_limits.cc (test_infinity): New.
(test_denorm_min, test_qnan, test_is_iec559): New.
From-SVN: r57221
2002-09-17 03:28:50 +02:00
|
|
|
|
|
|
|
This function, if given a string literal, is evaluated early enough
|
|
|
|
that it is considered a compile-time constant.
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} float __builtin_nanf (const char *str)
|
|
|
|
Similar to @code{__builtin_nan}, except the return type is @code{float}.
|
|
|
|
@end deftypefn
|
|
|
|
|
2003-04-30 16:17:26 +02:00
|
|
|
@deftypefn {Built-in Function} {long double} __builtin_nanl (const char *str)
|
builtin-types.def (BT_FN_FLOAT_CONST_STRING): New.
gcc/
* builtin-types.def (BT_FN_FLOAT_CONST_STRING): New.
(BT_FN_DOUBLE_CONST_STRING, BT_FN_LONG_DOUBLE_CONST_STRING): New.
* builtins.def (__builtin_nan, __builtin_nanf, __builtin_nanl): New.
(__builtin_nans, __builtin_nansf, __builtin_nansl): New.
* builtins.c (fold_builtin_nan): New.
(fold_builtin): Call it.
* real.c (real_nan): Parse a non-empty string.
(round_for_format): Fix NaN significand truncation.
* real.h (real_nan): Return bool.
* doc/extend.texi: Document new builtins.
libstdc++/
* include/std/std_limits.h (__glibcpp_f32_QNaN_bytes,
__glibcpp_f32_has_QNaN, __glibcpp_f32_SNaN_bytes,
__glibcpp_f32_has_SNaN, __glibcpp_f64_QNaN_bytes,
__glibcpp_f64_has_QNaN, __glibcpp_f64_SNaN_bytes,
__glibcpp_f64_has_SNaN, __glibcpp_f80_QNaN_bytes,
__glibcpp_f80_has_QNaN, __glibcpp_f80_SNaN_bytes,
__glibcpp_f80_has_SNaN, __glibcpp_f96_QNaN_bytes,
__glibcpp_f96_has_QNaN, __glibcpp_f96_SNaN_bytes,
__glibcpp_f96_has_SNaN, __glibcpp_f128_QNaN_bytes,
__glibcpp_f128_has_QNaN, __glibcpp_f128_SNaN_bytes,
__glibcpp_f128_has_SNaN, __glibcpp_float_QNaN_bytes,
__glibcpp_float_has_QNaN, __glibcpp_float_SNaN_bytes,
__glibcpp_float_has_SNaN, __glibcpp_double_QNaN_bytes,
__glibcpp_double_has_QNaN, __glibcpp_double_SNaN_bytes,
__glibcpp_double_has_SNaN, __glibcpp_long_double_QNaN_bytes,
__glibcpp_long_double_has_QNaN, __glibcpp_long_double_SNaN_bytes,
__glibcpp_long_double_has_SNaN): Remove.
(__glibcpp_f128_is_iec559): True if IEEE.
(__glibcpp_float_QNaN, __glibcpp_float_SNaN): Remove.
(__glibcpp_double_QNaN, __glibcpp_double_SNaN): Remove.
(__glibcpp_long_double_QNaN, __glibcpp_long_double_SNaN): Remove.
(std::numeric_limits<float>::has_quiet_NaN): Use __builtin_nanf.
(std::numeric_limits<float>::has_signaling_NaN): Mirror has_quiet_NaN.
(std::numeric_limits<float>::quiet_NaN): Use __builtin_nanf.
(std::numeric_limits<float>::signaling_NaN): Use __builtin_nansf.
(std::numeric_limits<double>): Similarly.
(std::numeric_limits<long double>): Similarly.
* src/limits.cc (__glibcpp_float_QNaN, __glibcpp_float_SNaN): Remove.
(__glibcpp_double_QNaN, __glibcpp_double_SNaN): Remove.
(__glibcpp_long_double_QNaN, __glibcpp_long_double_SNaN): Remove.
* testsuite/18_support/numeric_limits.cc (test_infinity): New.
(test_denorm_min, test_qnan, test_is_iec559): New.
From-SVN: r57221
2002-09-17 03:28:50 +02:00
|
|
|
Similar to @code{__builtin_nan}, except the return type is @code{long double}.
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} double __builtin_nans (const char *str)
|
c-tree.texi, [...]: Remove trailing whitespace.
* doc/c-tree.texi, doc/cpp.texi, doc/extend.texi,
doc/frontends.texi, doc/gcov.texi, doc/gty.texi, doc/install.texi,
doc/invoke.texi, doc/libgcc.texi, doc/md.texi, doc/rtl.texi,
doc/sourcebuild.texi, doc/standards.texi, doc/tm.texi,
doc/trouble.texi: Remove trailing whitespace.
From-SVN: r76098
2004-01-18 12:57:17 +01:00
|
|
|
Similar to @code{__builtin_nan}, except the significand is forced
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
to be a signaling NaN@. The @code{nans} function is proposed by
|
2004-05-15 12:02:09 +02:00
|
|
|
@uref{http://www.open-std.org/jtc1/sc22/wg14/www/docs/n965.htm,,WG14 N965}.
|
builtin-types.def (BT_FN_FLOAT_CONST_STRING): New.
gcc/
* builtin-types.def (BT_FN_FLOAT_CONST_STRING): New.
(BT_FN_DOUBLE_CONST_STRING, BT_FN_LONG_DOUBLE_CONST_STRING): New.
* builtins.def (__builtin_nan, __builtin_nanf, __builtin_nanl): New.
(__builtin_nans, __builtin_nansf, __builtin_nansl): New.
* builtins.c (fold_builtin_nan): New.
(fold_builtin): Call it.
* real.c (real_nan): Parse a non-empty string.
(round_for_format): Fix NaN significand truncation.
* real.h (real_nan): Return bool.
* doc/extend.texi: Document new builtins.
libstdc++/
* include/std/std_limits.h (__glibcpp_f32_QNaN_bytes,
__glibcpp_f32_has_QNaN, __glibcpp_f32_SNaN_bytes,
__glibcpp_f32_has_SNaN, __glibcpp_f64_QNaN_bytes,
__glibcpp_f64_has_QNaN, __glibcpp_f64_SNaN_bytes,
__glibcpp_f64_has_SNaN, __glibcpp_f80_QNaN_bytes,
__glibcpp_f80_has_QNaN, __glibcpp_f80_SNaN_bytes,
__glibcpp_f80_has_SNaN, __glibcpp_f96_QNaN_bytes,
__glibcpp_f96_has_QNaN, __glibcpp_f96_SNaN_bytes,
__glibcpp_f96_has_SNaN, __glibcpp_f128_QNaN_bytes,
__glibcpp_f128_has_QNaN, __glibcpp_f128_SNaN_bytes,
__glibcpp_f128_has_SNaN, __glibcpp_float_QNaN_bytes,
__glibcpp_float_has_QNaN, __glibcpp_float_SNaN_bytes,
__glibcpp_float_has_SNaN, __glibcpp_double_QNaN_bytes,
__glibcpp_double_has_QNaN, __glibcpp_double_SNaN_bytes,
__glibcpp_double_has_SNaN, __glibcpp_long_double_QNaN_bytes,
__glibcpp_long_double_has_QNaN, __glibcpp_long_double_SNaN_bytes,
__glibcpp_long_double_has_SNaN): Remove.
(__glibcpp_f128_is_iec559): True if IEEE.
(__glibcpp_float_QNaN, __glibcpp_float_SNaN): Remove.
(__glibcpp_double_QNaN, __glibcpp_double_SNaN): Remove.
(__glibcpp_long_double_QNaN, __glibcpp_long_double_SNaN): Remove.
(std::numeric_limits<float>::has_quiet_NaN): Use __builtin_nanf.
(std::numeric_limits<float>::has_signaling_NaN): Mirror has_quiet_NaN.
(std::numeric_limits<float>::quiet_NaN): Use __builtin_nanf.
(std::numeric_limits<float>::signaling_NaN): Use __builtin_nansf.
(std::numeric_limits<double>): Similarly.
(std::numeric_limits<long double>): Similarly.
* src/limits.cc (__glibcpp_float_QNaN, __glibcpp_float_SNaN): Remove.
(__glibcpp_double_QNaN, __glibcpp_double_SNaN): Remove.
(__glibcpp_long_double_QNaN, __glibcpp_long_double_SNaN): Remove.
* testsuite/18_support/numeric_limits.cc (test_infinity): New.
(test_denorm_min, test_qnan, test_is_iec559): New.
From-SVN: r57221
2002-09-17 03:28:50 +02:00
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} float __builtin_nansf (const char *str)
|
|
|
|
Similar to @code{__builtin_nans}, except the return type is @code{float}.
|
|
|
|
@end deftypefn
|
|
|
|
|
2003-04-30 16:17:26 +02:00
|
|
|
@deftypefn {Built-in Function} {long double} __builtin_nansl (const char *str)
|
builtin-types.def (BT_FN_FLOAT_CONST_STRING): New.
gcc/
* builtin-types.def (BT_FN_FLOAT_CONST_STRING): New.
(BT_FN_DOUBLE_CONST_STRING, BT_FN_LONG_DOUBLE_CONST_STRING): New.
* builtins.def (__builtin_nan, __builtin_nanf, __builtin_nanl): New.
(__builtin_nans, __builtin_nansf, __builtin_nansl): New.
* builtins.c (fold_builtin_nan): New.
(fold_builtin): Call it.
* real.c (real_nan): Parse a non-empty string.
(round_for_format): Fix NaN significand truncation.
* real.h (real_nan): Return bool.
* doc/extend.texi: Document new builtins.
libstdc++/
* include/std/std_limits.h (__glibcpp_f32_QNaN_bytes,
__glibcpp_f32_has_QNaN, __glibcpp_f32_SNaN_bytes,
__glibcpp_f32_has_SNaN, __glibcpp_f64_QNaN_bytes,
__glibcpp_f64_has_QNaN, __glibcpp_f64_SNaN_bytes,
__glibcpp_f64_has_SNaN, __glibcpp_f80_QNaN_bytes,
__glibcpp_f80_has_QNaN, __glibcpp_f80_SNaN_bytes,
__glibcpp_f80_has_SNaN, __glibcpp_f96_QNaN_bytes,
__glibcpp_f96_has_QNaN, __glibcpp_f96_SNaN_bytes,
__glibcpp_f96_has_SNaN, __glibcpp_f128_QNaN_bytes,
__glibcpp_f128_has_QNaN, __glibcpp_f128_SNaN_bytes,
__glibcpp_f128_has_SNaN, __glibcpp_float_QNaN_bytes,
__glibcpp_float_has_QNaN, __glibcpp_float_SNaN_bytes,
__glibcpp_float_has_SNaN, __glibcpp_double_QNaN_bytes,
__glibcpp_double_has_QNaN, __glibcpp_double_SNaN_bytes,
__glibcpp_double_has_SNaN, __glibcpp_long_double_QNaN_bytes,
__glibcpp_long_double_has_QNaN, __glibcpp_long_double_SNaN_bytes,
__glibcpp_long_double_has_SNaN): Remove.
(__glibcpp_f128_is_iec559): True if IEEE.
(__glibcpp_float_QNaN, __glibcpp_float_SNaN): Remove.
(__glibcpp_double_QNaN, __glibcpp_double_SNaN): Remove.
(__glibcpp_long_double_QNaN, __glibcpp_long_double_SNaN): Remove.
(std::numeric_limits<float>::has_quiet_NaN): Use __builtin_nanf.
(std::numeric_limits<float>::has_signaling_NaN): Mirror has_quiet_NaN.
(std::numeric_limits<float>::quiet_NaN): Use __builtin_nanf.
(std::numeric_limits<float>::signaling_NaN): Use __builtin_nansf.
(std::numeric_limits<double>): Similarly.
(std::numeric_limits<long double>): Similarly.
* src/limits.cc (__glibcpp_float_QNaN, __glibcpp_float_SNaN): Remove.
(__glibcpp_double_QNaN, __glibcpp_double_SNaN): Remove.
(__glibcpp_long_double_QNaN, __glibcpp_long_double_SNaN): Remove.
* testsuite/18_support/numeric_limits.cc (test_infinity): New.
(test_denorm_min, test_qnan, test_is_iec559): New.
From-SVN: r57221
2002-09-17 03:28:50 +02:00
|
|
|
Similar to @code{__builtin_nans}, except the return type is @code{long double}.
|
|
|
|
@end deftypefn
|
|
|
|
|
[multiple changes]
2003-02-01 Richard Henderson <rth@redhat.com>
* optabs.c (expand_unop): Use word_mode for outmode of bit scaners.
* libgcc2.c (__ffsdi2, __clzsi2, __clzdi2, __ctzsi2, __ctzdi2,
__popcountsi2, __popcountdi2, __paritysi2 __paritydi2): Change
return type to Wtype.
* libgcc-std.ver (GCC_3.4): Fix inheritance.
* config/i386/i386.md (ffssi2): Use nonimmediate_operand for
expander input constraint.
2003-02-01 Falk Hueffner <falk.hueffner@student.uni-tuebingen.de>
* optabs.h (optab_index): Add OTI_clz, OTI_ctz, OTI_popcount and
OTI_parity.
(clz_optab, ctz_optab, popcount_optab, parity_optab): New.
* optabs.c (widen_clz, expand_parity): New.
(expand_unop): Handle clz and parity. Hardcode SImode as outmode
for libcalls to clz, ctz, popcount, and parity.
(init_optabs): Init clz_optab, ctz_optab, popcount_optab and
parity_optab, and set up libfunc handlers.
* libgcc2.c (__clzsi2, __clzdi2, __ctzsi2, __ctzdi2,
__popcountsi2, __popcountdi2, __paritysi2 __paritydi2,
__popcount_tab): New.
* libgcc2.h: Declare them.
* libgcc-std.ver (GCC_3.4): Add new functions from libgcc2.c.
* genopinit.c (optabs): Add clz_optab, ctz_optab, popcount_optab
and parity_optab.
* builtin-types.def (BT_FN_INT_LONG, BT_FN_INT_LONGLONG): New.
* builtins.def (BUILT_IN_CLZ, BUILT_IN_CTZ, BUILT_IN_POPCOUNT,
BUILT_IN_PARITY, BUILT_IN_FFSL, BUILT_IN_CLZL, BUILT_IN_CTZL,
BUILT_IN_POPCOUNTL, BUILT_IN_PARITYL, BUILT_IN_FFSLL,
BUILT_IN_CLZLL, BUILT_IN_CTZLL, BUILT_IN_POPCOUNTLL,
BUILT_IN_PARITYLL): New.
* builtins.c (expand_builtin_unop): Rename from expand_builtin_ffs
and add optab argument.
(expand_builtin): Expand BUILT_IN_{FFS,CLZ,POPCOUNT,PARITY}*.
* tree.def (CLZ_EXPR, CTZ_EXPR, POPCOUNT_EXPR, PARITY_EXPR): New.
* expr.c (expand_expr): Handle them.
* fold-const.c (tree_expr_nonnegative_p): Likewise.
* rtl.def (CLZ, CTZ, POPCOUNT, PARITY): New.
* reload1.c (eliminate_regs): Handle them.
(elimination_effects): Likewise.
* function.c (instantiate_virtual_regs_1): Likewise
* genattrtab.c (check_attr_value): Likewise.
* simplify-rtx.c (simplify_unary_operation): Likewise.
* c-common.c (c_common_truthvalue_conversion): Handle POPCOUNT_EXPR.
* combine.c (combine_simplify_rtx): Handle POPCOUNT and PARITY.
(nonzero_bits): Handle CLZ, CTZ, POPCOUNT and PARITY.
* config/alpha/alpha.md (clzdi2, ctzdi2, popcountdi2): New.
* config/arm/arm.c (arm_init_builtins): Rename __builtin_clz to
__builtin_arm_clz.
* Makefile.in (LIB2FUNCS_1, LIB2FUNCS_2): Move...
* mklibgcc.in (lib2funcs): ...here and merge. Add new members.
* doc/extend.texi (Other Builtins): Add new builtins.
* doc/md.texi (Standard Names): Add new patterns.
From-SVN: r62252
2003-02-01 20:00:02 +01:00
|
|
|
@deftypefn {Built-in Function} int __builtin_ffs (unsigned int x)
|
|
|
|
Returns one plus the index of the least significant 1-bit of @var{x}, or
|
|
|
|
if @var{x} is zero, returns zero.
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} int __builtin_clz (unsigned int x)
|
|
|
|
Returns the number of leading 0-bits in @var{x}, starting at the most
|
|
|
|
significant bit position. If @var{x} is 0, the result is undefined.
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} int __builtin_ctz (unsigned int x)
|
|
|
|
Returns the number of trailing 0-bits in @var{x}, starting at the least
|
|
|
|
significant bit position. If @var{x} is 0, the result is undefined.
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} int __builtin_popcount (unsigned int x)
|
|
|
|
Returns the number of 1-bits in @var{x}.
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} int __builtin_parity (unsigned int x)
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
Returns the parity of @var{x}, i.e.@: the number of 1-bits in @var{x}
|
[multiple changes]
2003-02-01 Richard Henderson <rth@redhat.com>
* optabs.c (expand_unop): Use word_mode for outmode of bit scaners.
* libgcc2.c (__ffsdi2, __clzsi2, __clzdi2, __ctzsi2, __ctzdi2,
__popcountsi2, __popcountdi2, __paritysi2 __paritydi2): Change
return type to Wtype.
* libgcc-std.ver (GCC_3.4): Fix inheritance.
* config/i386/i386.md (ffssi2): Use nonimmediate_operand for
expander input constraint.
2003-02-01 Falk Hueffner <falk.hueffner@student.uni-tuebingen.de>
* optabs.h (optab_index): Add OTI_clz, OTI_ctz, OTI_popcount and
OTI_parity.
(clz_optab, ctz_optab, popcount_optab, parity_optab): New.
* optabs.c (widen_clz, expand_parity): New.
(expand_unop): Handle clz and parity. Hardcode SImode as outmode
for libcalls to clz, ctz, popcount, and parity.
(init_optabs): Init clz_optab, ctz_optab, popcount_optab and
parity_optab, and set up libfunc handlers.
* libgcc2.c (__clzsi2, __clzdi2, __ctzsi2, __ctzdi2,
__popcountsi2, __popcountdi2, __paritysi2 __paritydi2,
__popcount_tab): New.
* libgcc2.h: Declare them.
* libgcc-std.ver (GCC_3.4): Add new functions from libgcc2.c.
* genopinit.c (optabs): Add clz_optab, ctz_optab, popcount_optab
and parity_optab.
* builtin-types.def (BT_FN_INT_LONG, BT_FN_INT_LONGLONG): New.
* builtins.def (BUILT_IN_CLZ, BUILT_IN_CTZ, BUILT_IN_POPCOUNT,
BUILT_IN_PARITY, BUILT_IN_FFSL, BUILT_IN_CLZL, BUILT_IN_CTZL,
BUILT_IN_POPCOUNTL, BUILT_IN_PARITYL, BUILT_IN_FFSLL,
BUILT_IN_CLZLL, BUILT_IN_CTZLL, BUILT_IN_POPCOUNTLL,
BUILT_IN_PARITYLL): New.
* builtins.c (expand_builtin_unop): Rename from expand_builtin_ffs
and add optab argument.
(expand_builtin): Expand BUILT_IN_{FFS,CLZ,POPCOUNT,PARITY}*.
* tree.def (CLZ_EXPR, CTZ_EXPR, POPCOUNT_EXPR, PARITY_EXPR): New.
* expr.c (expand_expr): Handle them.
* fold-const.c (tree_expr_nonnegative_p): Likewise.
* rtl.def (CLZ, CTZ, POPCOUNT, PARITY): New.
* reload1.c (eliminate_regs): Handle them.
(elimination_effects): Likewise.
* function.c (instantiate_virtual_regs_1): Likewise
* genattrtab.c (check_attr_value): Likewise.
* simplify-rtx.c (simplify_unary_operation): Likewise.
* c-common.c (c_common_truthvalue_conversion): Handle POPCOUNT_EXPR.
* combine.c (combine_simplify_rtx): Handle POPCOUNT and PARITY.
(nonzero_bits): Handle CLZ, CTZ, POPCOUNT and PARITY.
* config/alpha/alpha.md (clzdi2, ctzdi2, popcountdi2): New.
* config/arm/arm.c (arm_init_builtins): Rename __builtin_clz to
__builtin_arm_clz.
* Makefile.in (LIB2FUNCS_1, LIB2FUNCS_2): Move...
* mklibgcc.in (lib2funcs): ...here and merge. Add new members.
* doc/extend.texi (Other Builtins): Add new builtins.
* doc/md.texi (Standard Names): Add new patterns.
From-SVN: r62252
2003-02-01 20:00:02 +01:00
|
|
|
modulo 2.
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} int __builtin_ffsl (unsigned long)
|
|
|
|
Similar to @code{__builtin_ffs}, except the argument type is
|
|
|
|
@code{unsigned long}.
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} int __builtin_clzl (unsigned long)
|
|
|
|
Similar to @code{__builtin_clz}, except the argument type is
|
|
|
|
@code{unsigned long}.
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} int __builtin_ctzl (unsigned long)
|
|
|
|
Similar to @code{__builtin_ctz}, except the argument type is
|
|
|
|
@code{unsigned long}.
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} int __builtin_popcountl (unsigned long)
|
|
|
|
Similar to @code{__builtin_popcount}, except the argument type is
|
|
|
|
@code{unsigned long}.
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} int __builtin_parityl (unsigned long)
|
|
|
|
Similar to @code{__builtin_parity}, except the argument type is
|
|
|
|
@code{unsigned long}.
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} int __builtin_ffsll (unsigned long long)
|
|
|
|
Similar to @code{__builtin_ffs}, except the argument type is
|
|
|
|
@code{unsigned long long}.
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} int __builtin_clzll (unsigned long long)
|
|
|
|
Similar to @code{__builtin_clz}, except the argument type is
|
|
|
|
@code{unsigned long long}.
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} int __builtin_ctzll (unsigned long long)
|
|
|
|
Similar to @code{__builtin_ctz}, except the argument type is
|
|
|
|
@code{unsigned long long}.
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} int __builtin_popcountll (unsigned long long)
|
|
|
|
Similar to @code{__builtin_popcount}, except the argument type is
|
|
|
|
@code{unsigned long long}.
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
@deftypefn {Built-in Function} int __builtin_parityll (unsigned long long)
|
|
|
|
Similar to @code{__builtin_parity}, except the argument type is
|
|
|
|
@code{unsigned long long}.
|
|
|
|
@end deftypefn
|
|
|
|
|
|
|
|
|
2002-01-14 21:09:52 +01:00
|
|
|
@node Target Builtins
|
|
|
|
@section Built-in Functions Specific to Particular Target Machines
|
|
|
|
|
|
|
|
On some target machines, GCC supports many built-in functions specific
|
|
|
|
to those machines. Generally these generate calls to specific machine
|
|
|
|
instructions, but allow the compiler to schedule those calls.
|
|
|
|
|
|
|
|
@menu
|
alpha.c (reg_or_const_int_operand): New.
* config/alpha/alpha.c (reg_or_const_int_operand): New.
(some_operand, input_operand): Accept CONST_VECTOR.
(alpha_extra_constraint): Add 'W'.
(alpha_expand_zap_mask): New.
(alpha_expand_builtin_vector_binop): New.
(enum alpha_builtin): New.
(zero_arg_builtins, one_arg_builtins, two_arg_builtins): New.
(alpha_init_builtins, alpha_expand_builtin): New.
(TARGET_INIT_BUILTINS, TARGET_EXPAND_BUILTIN): New.
* config/alpha/alpha.h (VECTOR_MODE_SUPPORTED_P): New.
(PREDICATE_CODES): Update.
* config/alpha/alpha-protos.h: Update.
* config/alpha/alpha.md (UNSPEC_CMPBGE, UNSPEC_ZAP,
UNSPEC_AMASK, UNSPEC_IMPLVER, UNSPEC_PERR, UNSPECV_RPCC): New.
(movv8qi, movv8qi_fix, movv8qi_nofix): New.
(movv4hi, movv4hi_fix, movv4hi_nofix): New.
(movv2si, movv2si_fix, movv2si_nofix): New.
(uminv8qi3, sminv8qi3, uminv4hi3, sminv4hi3): New.
(umaxv8qi3, smaxv8qi3, umaxv4hi3, smaxv4hi3): New.
(builtin_cmpbge, builtin_extql, builtin_extqh, builtin_zap,
builtin_zap_1, builtin_zapnot, builtin_zapnot_1, builtin_amask,
builtin_implver, builtin_rpcc, builtin_minub8, builtin_minsb8,
builtin_minuw4, builtin_minsw4, builtin_maxub8, builtin_maxsb8,
builtin_maxuw4, builtin_maxsw4, builtin_perr, builtin_pklb,
pklb, builtin_pkwb, pkwb, builtin_unpkbl, unpkbl,
builtin_unpkbw, unpkbw): New.
* doc/extend.texi (Alpha Built-in Functions): New.
* gcc.dg/alpha-base-1.c, gcc.dg/alpha-base-2.c: New.
* gcc.dg/alpha-max-1.c, gcc.dg/alpha-max-2.c: New.
From-SVN: r54229
2002-06-04 06:06:38 +02:00
|
|
|
* Alpha Built-in Functions::
|
2003-06-20 10:08:20 +02:00
|
|
|
* ARM Built-in Functions::
|
2004-09-10 09:54:15 +02:00
|
|
|
* FR-V Built-in Functions::
|
2002-01-14 21:09:52 +01:00
|
|
|
* X86 Built-in Functions::
|
2004-10-05 09:15:03 +02:00
|
|
|
* MIPS Paired-Single Support::
|
2002-01-23 03:10:39 +01:00
|
|
|
* PowerPC AltiVec Built-in Functions::
|
2004-11-26 14:18:14 +01:00
|
|
|
* SPARC VIS Built-in Functions::
|
2002-01-14 21:09:52 +01:00
|
|
|
@end menu
|
|
|
|
|
alpha.c (reg_or_const_int_operand): New.
* config/alpha/alpha.c (reg_or_const_int_operand): New.
(some_operand, input_operand): Accept CONST_VECTOR.
(alpha_extra_constraint): Add 'W'.
(alpha_expand_zap_mask): New.
(alpha_expand_builtin_vector_binop): New.
(enum alpha_builtin): New.
(zero_arg_builtins, one_arg_builtins, two_arg_builtins): New.
(alpha_init_builtins, alpha_expand_builtin): New.
(TARGET_INIT_BUILTINS, TARGET_EXPAND_BUILTIN): New.
* config/alpha/alpha.h (VECTOR_MODE_SUPPORTED_P): New.
(PREDICATE_CODES): Update.
* config/alpha/alpha-protos.h: Update.
* config/alpha/alpha.md (UNSPEC_CMPBGE, UNSPEC_ZAP,
UNSPEC_AMASK, UNSPEC_IMPLVER, UNSPEC_PERR, UNSPECV_RPCC): New.
(movv8qi, movv8qi_fix, movv8qi_nofix): New.
(movv4hi, movv4hi_fix, movv4hi_nofix): New.
(movv2si, movv2si_fix, movv2si_nofix): New.
(uminv8qi3, sminv8qi3, uminv4hi3, sminv4hi3): New.
(umaxv8qi3, smaxv8qi3, umaxv4hi3, smaxv4hi3): New.
(builtin_cmpbge, builtin_extql, builtin_extqh, builtin_zap,
builtin_zap_1, builtin_zapnot, builtin_zapnot_1, builtin_amask,
builtin_implver, builtin_rpcc, builtin_minub8, builtin_minsb8,
builtin_minuw4, builtin_minsw4, builtin_maxub8, builtin_maxsb8,
builtin_maxuw4, builtin_maxsw4, builtin_perr, builtin_pklb,
pklb, builtin_pkwb, pkwb, builtin_unpkbl, unpkbl,
builtin_unpkbw, unpkbw): New.
* doc/extend.texi (Alpha Built-in Functions): New.
* gcc.dg/alpha-base-1.c, gcc.dg/alpha-base-2.c: New.
* gcc.dg/alpha-max-1.c, gcc.dg/alpha-max-2.c: New.
From-SVN: r54229
2002-06-04 06:06:38 +02:00
|
|
|
@node Alpha Built-in Functions
|
|
|
|
@subsection Alpha Built-in Functions
|
|
|
|
|
|
|
|
These built-in functions are available for the Alpha family of
|
|
|
|
processors, depending on the command-line switches used.
|
|
|
|
|
2002-06-10 21:12:10 +02:00
|
|
|
The following built-in functions are always available. They
|
alpha.c (reg_or_const_int_operand): New.
* config/alpha/alpha.c (reg_or_const_int_operand): New.
(some_operand, input_operand): Accept CONST_VECTOR.
(alpha_extra_constraint): Add 'W'.
(alpha_expand_zap_mask): New.
(alpha_expand_builtin_vector_binop): New.
(enum alpha_builtin): New.
(zero_arg_builtins, one_arg_builtins, two_arg_builtins): New.
(alpha_init_builtins, alpha_expand_builtin): New.
(TARGET_INIT_BUILTINS, TARGET_EXPAND_BUILTIN): New.
* config/alpha/alpha.h (VECTOR_MODE_SUPPORTED_P): New.
(PREDICATE_CODES): Update.
* config/alpha/alpha-protos.h: Update.
* config/alpha/alpha.md (UNSPEC_CMPBGE, UNSPEC_ZAP,
UNSPEC_AMASK, UNSPEC_IMPLVER, UNSPEC_PERR, UNSPECV_RPCC): New.
(movv8qi, movv8qi_fix, movv8qi_nofix): New.
(movv4hi, movv4hi_fix, movv4hi_nofix): New.
(movv2si, movv2si_fix, movv2si_nofix): New.
(uminv8qi3, sminv8qi3, uminv4hi3, sminv4hi3): New.
(umaxv8qi3, smaxv8qi3, umaxv4hi3, smaxv4hi3): New.
(builtin_cmpbge, builtin_extql, builtin_extqh, builtin_zap,
builtin_zap_1, builtin_zapnot, builtin_zapnot_1, builtin_amask,
builtin_implver, builtin_rpcc, builtin_minub8, builtin_minsb8,
builtin_minuw4, builtin_minsw4, builtin_maxub8, builtin_maxsb8,
builtin_maxuw4, builtin_maxsw4, builtin_perr, builtin_pklb,
pklb, builtin_pkwb, pkwb, builtin_unpkbl, unpkbl,
builtin_unpkbw, unpkbw): New.
* doc/extend.texi (Alpha Built-in Functions): New.
* gcc.dg/alpha-base-1.c, gcc.dg/alpha-base-2.c: New.
* gcc.dg/alpha-max-1.c, gcc.dg/alpha-max-2.c: New.
From-SVN: r54229
2002-06-04 06:06:38 +02:00
|
|
|
all generate the machine instruction that is part of the name.
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
alpha.c (reg_or_const_int_operand): New.
* config/alpha/alpha.c (reg_or_const_int_operand): New.
(some_operand, input_operand): Accept CONST_VECTOR.
(alpha_extra_constraint): Add 'W'.
(alpha_expand_zap_mask): New.
(alpha_expand_builtin_vector_binop): New.
(enum alpha_builtin): New.
(zero_arg_builtins, one_arg_builtins, two_arg_builtins): New.
(alpha_init_builtins, alpha_expand_builtin): New.
(TARGET_INIT_BUILTINS, TARGET_EXPAND_BUILTIN): New.
* config/alpha/alpha.h (VECTOR_MODE_SUPPORTED_P): New.
(PREDICATE_CODES): Update.
* config/alpha/alpha-protos.h: Update.
* config/alpha/alpha.md (UNSPEC_CMPBGE, UNSPEC_ZAP,
UNSPEC_AMASK, UNSPEC_IMPLVER, UNSPEC_PERR, UNSPECV_RPCC): New.
(movv8qi, movv8qi_fix, movv8qi_nofix): New.
(movv4hi, movv4hi_fix, movv4hi_nofix): New.
(movv2si, movv2si_fix, movv2si_nofix): New.
(uminv8qi3, sminv8qi3, uminv4hi3, sminv4hi3): New.
(umaxv8qi3, smaxv8qi3, umaxv4hi3, smaxv4hi3): New.
(builtin_cmpbge, builtin_extql, builtin_extqh, builtin_zap,
builtin_zap_1, builtin_zapnot, builtin_zapnot_1, builtin_amask,
builtin_implver, builtin_rpcc, builtin_minub8, builtin_minsb8,
builtin_minuw4, builtin_minsw4, builtin_maxub8, builtin_maxsb8,
builtin_maxuw4, builtin_maxsw4, builtin_perr, builtin_pklb,
pklb, builtin_pkwb, pkwb, builtin_unpkbl, unpkbl,
builtin_unpkbw, unpkbw): New.
* doc/extend.texi (Alpha Built-in Functions): New.
* gcc.dg/alpha-base-1.c, gcc.dg/alpha-base-2.c: New.
* gcc.dg/alpha-max-1.c, gcc.dg/alpha-max-2.c: New.
From-SVN: r54229
2002-06-04 06:06:38 +02:00
|
|
|
long __builtin_alpha_implver (void)
|
|
|
|
long __builtin_alpha_rpcc (void)
|
|
|
|
long __builtin_alpha_amask (long)
|
|
|
|
long __builtin_alpha_cmpbge (long, long)
|
alpha.c (mode_mask_operand): Simplify without ifdefs.
* config/alpha/alpha.c (mode_mask_operand): Simplify without ifdefs.
(print_operand) ['U']: Likewise.
(alpha_expand_unaligned_store): Correct constants for 32-bit cross.
(alpha_expand_unaligned_store_words): Likewise.
(alpha_expand_builtin_vector_binop): Fix typo.
(enum alpha_builtin, code_for_builtin): Add remaining ext, ins, msk,
umulh, and cix insns.
(one_arg_builtins): Add cix builtins.
(two_arg_builtins): Add ext, ins, msk, umulh builtins.
(alpha_expand_builtin): Fix typo in arity.
* config/alpha/alpha.md (UNSPEC_CTLZ, UNSPEC_CTPOP): New.
(builtin_extbl, builtin_extwl, builtin_extll, builtin_extwh,
builtin_extlh, builtin_insbl, builtin_inswl, builtin_insll,
builtin_insql, builtin_inswh, builtin_inslh, builtin_insqh,
builtin_mskbl, builtin_mskwl, builtin_mskll, builtin_mskql,
builtin_mskwh, builtin_msklh, builtin_mskqh, builtin_cttz,
builtin_ctlz, builtin_ctpop): New.
* doc/extend.texi (Alpha Built-in Functions): Update.
* gcc.dg/alpha-base-1.c: Add ext/ins/msk/umulh cases.
* gcc.dg/alpha-max-1.c, gcc.dg/alpha-max-2.c: Use -mcpu=ev67.
* gcc.dg/alpha-cix-1.c, gcc.dg/alpha-cix-2.c: New.
From-SVN: r54267
2002-06-05 00:46:00 +02:00
|
|
|
long __builtin_alpha_extbl (long, long)
|
|
|
|
long __builtin_alpha_extwl (long, long)
|
|
|
|
long __builtin_alpha_extll (long, long)
|
alpha.c (reg_or_const_int_operand): New.
* config/alpha/alpha.c (reg_or_const_int_operand): New.
(some_operand, input_operand): Accept CONST_VECTOR.
(alpha_extra_constraint): Add 'W'.
(alpha_expand_zap_mask): New.
(alpha_expand_builtin_vector_binop): New.
(enum alpha_builtin): New.
(zero_arg_builtins, one_arg_builtins, two_arg_builtins): New.
(alpha_init_builtins, alpha_expand_builtin): New.
(TARGET_INIT_BUILTINS, TARGET_EXPAND_BUILTIN): New.
* config/alpha/alpha.h (VECTOR_MODE_SUPPORTED_P): New.
(PREDICATE_CODES): Update.
* config/alpha/alpha-protos.h: Update.
* config/alpha/alpha.md (UNSPEC_CMPBGE, UNSPEC_ZAP,
UNSPEC_AMASK, UNSPEC_IMPLVER, UNSPEC_PERR, UNSPECV_RPCC): New.
(movv8qi, movv8qi_fix, movv8qi_nofix): New.
(movv4hi, movv4hi_fix, movv4hi_nofix): New.
(movv2si, movv2si_fix, movv2si_nofix): New.
(uminv8qi3, sminv8qi3, uminv4hi3, sminv4hi3): New.
(umaxv8qi3, smaxv8qi3, umaxv4hi3, smaxv4hi3): New.
(builtin_cmpbge, builtin_extql, builtin_extqh, builtin_zap,
builtin_zap_1, builtin_zapnot, builtin_zapnot_1, builtin_amask,
builtin_implver, builtin_rpcc, builtin_minub8, builtin_minsb8,
builtin_minuw4, builtin_minsw4, builtin_maxub8, builtin_maxsb8,
builtin_maxuw4, builtin_maxsw4, builtin_perr, builtin_pklb,
pklb, builtin_pkwb, pkwb, builtin_unpkbl, unpkbl,
builtin_unpkbw, unpkbw): New.
* doc/extend.texi (Alpha Built-in Functions): New.
* gcc.dg/alpha-base-1.c, gcc.dg/alpha-base-2.c: New.
* gcc.dg/alpha-max-1.c, gcc.dg/alpha-max-2.c: New.
From-SVN: r54229
2002-06-04 06:06:38 +02:00
|
|
|
long __builtin_alpha_extql (long, long)
|
alpha.c (mode_mask_operand): Simplify without ifdefs.
* config/alpha/alpha.c (mode_mask_operand): Simplify without ifdefs.
(print_operand) ['U']: Likewise.
(alpha_expand_unaligned_store): Correct constants for 32-bit cross.
(alpha_expand_unaligned_store_words): Likewise.
(alpha_expand_builtin_vector_binop): Fix typo.
(enum alpha_builtin, code_for_builtin): Add remaining ext, ins, msk,
umulh, and cix insns.
(one_arg_builtins): Add cix builtins.
(two_arg_builtins): Add ext, ins, msk, umulh builtins.
(alpha_expand_builtin): Fix typo in arity.
* config/alpha/alpha.md (UNSPEC_CTLZ, UNSPEC_CTPOP): New.
(builtin_extbl, builtin_extwl, builtin_extll, builtin_extwh,
builtin_extlh, builtin_insbl, builtin_inswl, builtin_insll,
builtin_insql, builtin_inswh, builtin_inslh, builtin_insqh,
builtin_mskbl, builtin_mskwl, builtin_mskll, builtin_mskql,
builtin_mskwh, builtin_msklh, builtin_mskqh, builtin_cttz,
builtin_ctlz, builtin_ctpop): New.
* doc/extend.texi (Alpha Built-in Functions): Update.
* gcc.dg/alpha-base-1.c: Add ext/ins/msk/umulh cases.
* gcc.dg/alpha-max-1.c, gcc.dg/alpha-max-2.c: Use -mcpu=ev67.
* gcc.dg/alpha-cix-1.c, gcc.dg/alpha-cix-2.c: New.
From-SVN: r54267
2002-06-05 00:46:00 +02:00
|
|
|
long __builtin_alpha_extwh (long, long)
|
|
|
|
long __builtin_alpha_extlh (long, long)
|
alpha.c (reg_or_const_int_operand): New.
* config/alpha/alpha.c (reg_or_const_int_operand): New.
(some_operand, input_operand): Accept CONST_VECTOR.
(alpha_extra_constraint): Add 'W'.
(alpha_expand_zap_mask): New.
(alpha_expand_builtin_vector_binop): New.
(enum alpha_builtin): New.
(zero_arg_builtins, one_arg_builtins, two_arg_builtins): New.
(alpha_init_builtins, alpha_expand_builtin): New.
(TARGET_INIT_BUILTINS, TARGET_EXPAND_BUILTIN): New.
* config/alpha/alpha.h (VECTOR_MODE_SUPPORTED_P): New.
(PREDICATE_CODES): Update.
* config/alpha/alpha-protos.h: Update.
* config/alpha/alpha.md (UNSPEC_CMPBGE, UNSPEC_ZAP,
UNSPEC_AMASK, UNSPEC_IMPLVER, UNSPEC_PERR, UNSPECV_RPCC): New.
(movv8qi, movv8qi_fix, movv8qi_nofix): New.
(movv4hi, movv4hi_fix, movv4hi_nofix): New.
(movv2si, movv2si_fix, movv2si_nofix): New.
(uminv8qi3, sminv8qi3, uminv4hi3, sminv4hi3): New.
(umaxv8qi3, smaxv8qi3, umaxv4hi3, smaxv4hi3): New.
(builtin_cmpbge, builtin_extql, builtin_extqh, builtin_zap,
builtin_zap_1, builtin_zapnot, builtin_zapnot_1, builtin_amask,
builtin_implver, builtin_rpcc, builtin_minub8, builtin_minsb8,
builtin_minuw4, builtin_minsw4, builtin_maxub8, builtin_maxsb8,
builtin_maxuw4, builtin_maxsw4, builtin_perr, builtin_pklb,
pklb, builtin_pkwb, pkwb, builtin_unpkbl, unpkbl,
builtin_unpkbw, unpkbw): New.
* doc/extend.texi (Alpha Built-in Functions): New.
* gcc.dg/alpha-base-1.c, gcc.dg/alpha-base-2.c: New.
* gcc.dg/alpha-max-1.c, gcc.dg/alpha-max-2.c: New.
From-SVN: r54229
2002-06-04 06:06:38 +02:00
|
|
|
long __builtin_alpha_extqh (long, long)
|
alpha.c (mode_mask_operand): Simplify without ifdefs.
* config/alpha/alpha.c (mode_mask_operand): Simplify without ifdefs.
(print_operand) ['U']: Likewise.
(alpha_expand_unaligned_store): Correct constants for 32-bit cross.
(alpha_expand_unaligned_store_words): Likewise.
(alpha_expand_builtin_vector_binop): Fix typo.
(enum alpha_builtin, code_for_builtin): Add remaining ext, ins, msk,
umulh, and cix insns.
(one_arg_builtins): Add cix builtins.
(two_arg_builtins): Add ext, ins, msk, umulh builtins.
(alpha_expand_builtin): Fix typo in arity.
* config/alpha/alpha.md (UNSPEC_CTLZ, UNSPEC_CTPOP): New.
(builtin_extbl, builtin_extwl, builtin_extll, builtin_extwh,
builtin_extlh, builtin_insbl, builtin_inswl, builtin_insll,
builtin_insql, builtin_inswh, builtin_inslh, builtin_insqh,
builtin_mskbl, builtin_mskwl, builtin_mskll, builtin_mskql,
builtin_mskwh, builtin_msklh, builtin_mskqh, builtin_cttz,
builtin_ctlz, builtin_ctpop): New.
* doc/extend.texi (Alpha Built-in Functions): Update.
* gcc.dg/alpha-base-1.c: Add ext/ins/msk/umulh cases.
* gcc.dg/alpha-max-1.c, gcc.dg/alpha-max-2.c: Use -mcpu=ev67.
* gcc.dg/alpha-cix-1.c, gcc.dg/alpha-cix-2.c: New.
From-SVN: r54267
2002-06-05 00:46:00 +02:00
|
|
|
long __builtin_alpha_insbl (long, long)
|
|
|
|
long __builtin_alpha_inswl (long, long)
|
|
|
|
long __builtin_alpha_insll (long, long)
|
|
|
|
long __builtin_alpha_insql (long, long)
|
|
|
|
long __builtin_alpha_inswh (long, long)
|
|
|
|
long __builtin_alpha_inslh (long, long)
|
|
|
|
long __builtin_alpha_insqh (long, long)
|
|
|
|
long __builtin_alpha_mskbl (long, long)
|
|
|
|
long __builtin_alpha_mskwl (long, long)
|
|
|
|
long __builtin_alpha_mskll (long, long)
|
|
|
|
long __builtin_alpha_mskql (long, long)
|
|
|
|
long __builtin_alpha_mskwh (long, long)
|
|
|
|
long __builtin_alpha_msklh (long, long)
|
|
|
|
long __builtin_alpha_mskqh (long, long)
|
|
|
|
long __builtin_alpha_umulh (long, long)
|
alpha.c (reg_or_const_int_operand): New.
* config/alpha/alpha.c (reg_or_const_int_operand): New.
(some_operand, input_operand): Accept CONST_VECTOR.
(alpha_extra_constraint): Add 'W'.
(alpha_expand_zap_mask): New.
(alpha_expand_builtin_vector_binop): New.
(enum alpha_builtin): New.
(zero_arg_builtins, one_arg_builtins, two_arg_builtins): New.
(alpha_init_builtins, alpha_expand_builtin): New.
(TARGET_INIT_BUILTINS, TARGET_EXPAND_BUILTIN): New.
* config/alpha/alpha.h (VECTOR_MODE_SUPPORTED_P): New.
(PREDICATE_CODES): Update.
* config/alpha/alpha-protos.h: Update.
* config/alpha/alpha.md (UNSPEC_CMPBGE, UNSPEC_ZAP,
UNSPEC_AMASK, UNSPEC_IMPLVER, UNSPEC_PERR, UNSPECV_RPCC): New.
(movv8qi, movv8qi_fix, movv8qi_nofix): New.
(movv4hi, movv4hi_fix, movv4hi_nofix): New.
(movv2si, movv2si_fix, movv2si_nofix): New.
(uminv8qi3, sminv8qi3, uminv4hi3, sminv4hi3): New.
(umaxv8qi3, smaxv8qi3, umaxv4hi3, smaxv4hi3): New.
(builtin_cmpbge, builtin_extql, builtin_extqh, builtin_zap,
builtin_zap_1, builtin_zapnot, builtin_zapnot_1, builtin_amask,
builtin_implver, builtin_rpcc, builtin_minub8, builtin_minsb8,
builtin_minuw4, builtin_minsw4, builtin_maxub8, builtin_maxsb8,
builtin_maxuw4, builtin_maxsw4, builtin_perr, builtin_pklb,
pklb, builtin_pkwb, pkwb, builtin_unpkbl, unpkbl,
builtin_unpkbw, unpkbw): New.
* doc/extend.texi (Alpha Built-in Functions): New.
* gcc.dg/alpha-base-1.c, gcc.dg/alpha-base-2.c: New.
* gcc.dg/alpha-max-1.c, gcc.dg/alpha-max-2.c: New.
From-SVN: r54229
2002-06-04 06:06:38 +02:00
|
|
|
long __builtin_alpha_zap (long, long)
|
|
|
|
long __builtin_alpha_zapnot (long, long)
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
alpha.c (reg_or_const_int_operand): New.
* config/alpha/alpha.c (reg_or_const_int_operand): New.
(some_operand, input_operand): Accept CONST_VECTOR.
(alpha_extra_constraint): Add 'W'.
(alpha_expand_zap_mask): New.
(alpha_expand_builtin_vector_binop): New.
(enum alpha_builtin): New.
(zero_arg_builtins, one_arg_builtins, two_arg_builtins): New.
(alpha_init_builtins, alpha_expand_builtin): New.
(TARGET_INIT_BUILTINS, TARGET_EXPAND_BUILTIN): New.
* config/alpha/alpha.h (VECTOR_MODE_SUPPORTED_P): New.
(PREDICATE_CODES): Update.
* config/alpha/alpha-protos.h: Update.
* config/alpha/alpha.md (UNSPEC_CMPBGE, UNSPEC_ZAP,
UNSPEC_AMASK, UNSPEC_IMPLVER, UNSPEC_PERR, UNSPECV_RPCC): New.
(movv8qi, movv8qi_fix, movv8qi_nofix): New.
(movv4hi, movv4hi_fix, movv4hi_nofix): New.
(movv2si, movv2si_fix, movv2si_nofix): New.
(uminv8qi3, sminv8qi3, uminv4hi3, sminv4hi3): New.
(umaxv8qi3, smaxv8qi3, umaxv4hi3, smaxv4hi3): New.
(builtin_cmpbge, builtin_extql, builtin_extqh, builtin_zap,
builtin_zap_1, builtin_zapnot, builtin_zapnot_1, builtin_amask,
builtin_implver, builtin_rpcc, builtin_minub8, builtin_minsb8,
builtin_minuw4, builtin_minsw4, builtin_maxub8, builtin_maxsb8,
builtin_maxuw4, builtin_maxsw4, builtin_perr, builtin_pklb,
pklb, builtin_pkwb, pkwb, builtin_unpkbl, unpkbl,
builtin_unpkbw, unpkbw): New.
* doc/extend.texi (Alpha Built-in Functions): New.
* gcc.dg/alpha-base-1.c, gcc.dg/alpha-base-2.c: New.
* gcc.dg/alpha-max-1.c, gcc.dg/alpha-max-2.c: New.
From-SVN: r54229
2002-06-04 06:06:38 +02:00
|
|
|
|
|
|
|
The following built-in functions are always with @option{-mmax}
|
|
|
|
or @option{-mcpu=@var{cpu}} where @var{cpu} is @code{pca56} or
|
|
|
|
later. They all generate the machine instruction that is part
|
|
|
|
of the name.
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
alpha.c (reg_or_const_int_operand): New.
* config/alpha/alpha.c (reg_or_const_int_operand): New.
(some_operand, input_operand): Accept CONST_VECTOR.
(alpha_extra_constraint): Add 'W'.
(alpha_expand_zap_mask): New.
(alpha_expand_builtin_vector_binop): New.
(enum alpha_builtin): New.
(zero_arg_builtins, one_arg_builtins, two_arg_builtins): New.
(alpha_init_builtins, alpha_expand_builtin): New.
(TARGET_INIT_BUILTINS, TARGET_EXPAND_BUILTIN): New.
* config/alpha/alpha.h (VECTOR_MODE_SUPPORTED_P): New.
(PREDICATE_CODES): Update.
* config/alpha/alpha-protos.h: Update.
* config/alpha/alpha.md (UNSPEC_CMPBGE, UNSPEC_ZAP,
UNSPEC_AMASK, UNSPEC_IMPLVER, UNSPEC_PERR, UNSPECV_RPCC): New.
(movv8qi, movv8qi_fix, movv8qi_nofix): New.
(movv4hi, movv4hi_fix, movv4hi_nofix): New.
(movv2si, movv2si_fix, movv2si_nofix): New.
(uminv8qi3, sminv8qi3, uminv4hi3, sminv4hi3): New.
(umaxv8qi3, smaxv8qi3, umaxv4hi3, smaxv4hi3): New.
(builtin_cmpbge, builtin_extql, builtin_extqh, builtin_zap,
builtin_zap_1, builtin_zapnot, builtin_zapnot_1, builtin_amask,
builtin_implver, builtin_rpcc, builtin_minub8, builtin_minsb8,
builtin_minuw4, builtin_minsw4, builtin_maxub8, builtin_maxsb8,
builtin_maxuw4, builtin_maxsw4, builtin_perr, builtin_pklb,
pklb, builtin_pkwb, pkwb, builtin_unpkbl, unpkbl,
builtin_unpkbw, unpkbw): New.
* doc/extend.texi (Alpha Built-in Functions): New.
* gcc.dg/alpha-base-1.c, gcc.dg/alpha-base-2.c: New.
* gcc.dg/alpha-max-1.c, gcc.dg/alpha-max-2.c: New.
From-SVN: r54229
2002-06-04 06:06:38 +02:00
|
|
|
long __builtin_alpha_pklb (long)
|
|
|
|
long __builtin_alpha_pkwb (long)
|
|
|
|
long __builtin_alpha_unpkbl (long)
|
|
|
|
long __builtin_alpha_unpkbw (long)
|
|
|
|
long __builtin_alpha_minub8 (long, long)
|
|
|
|
long __builtin_alpha_minsb8 (long, long)
|
|
|
|
long __builtin_alpha_minuw4 (long, long)
|
|
|
|
long __builtin_alpha_minsw4 (long, long)
|
|
|
|
long __builtin_alpha_maxub8 (long, long)
|
|
|
|
long __builtin_alpha_maxsb8 (long, long)
|
|
|
|
long __builtin_alpha_maxuw4 (long, long)
|
|
|
|
long __builtin_alpha_maxsw4 (long, long)
|
|
|
|
long __builtin_alpha_perr (long, long)
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
alpha.c (reg_or_const_int_operand): New.
* config/alpha/alpha.c (reg_or_const_int_operand): New.
(some_operand, input_operand): Accept CONST_VECTOR.
(alpha_extra_constraint): Add 'W'.
(alpha_expand_zap_mask): New.
(alpha_expand_builtin_vector_binop): New.
(enum alpha_builtin): New.
(zero_arg_builtins, one_arg_builtins, two_arg_builtins): New.
(alpha_init_builtins, alpha_expand_builtin): New.
(TARGET_INIT_BUILTINS, TARGET_EXPAND_BUILTIN): New.
* config/alpha/alpha.h (VECTOR_MODE_SUPPORTED_P): New.
(PREDICATE_CODES): Update.
* config/alpha/alpha-protos.h: Update.
* config/alpha/alpha.md (UNSPEC_CMPBGE, UNSPEC_ZAP,
UNSPEC_AMASK, UNSPEC_IMPLVER, UNSPEC_PERR, UNSPECV_RPCC): New.
(movv8qi, movv8qi_fix, movv8qi_nofix): New.
(movv4hi, movv4hi_fix, movv4hi_nofix): New.
(movv2si, movv2si_fix, movv2si_nofix): New.
(uminv8qi3, sminv8qi3, uminv4hi3, sminv4hi3): New.
(umaxv8qi3, smaxv8qi3, umaxv4hi3, smaxv4hi3): New.
(builtin_cmpbge, builtin_extql, builtin_extqh, builtin_zap,
builtin_zap_1, builtin_zapnot, builtin_zapnot_1, builtin_amask,
builtin_implver, builtin_rpcc, builtin_minub8, builtin_minsb8,
builtin_minuw4, builtin_minsw4, builtin_maxub8, builtin_maxsb8,
builtin_maxuw4, builtin_maxsw4, builtin_perr, builtin_pklb,
pklb, builtin_pkwb, pkwb, builtin_unpkbl, unpkbl,
builtin_unpkbw, unpkbw): New.
* doc/extend.texi (Alpha Built-in Functions): New.
* gcc.dg/alpha-base-1.c, gcc.dg/alpha-base-2.c: New.
* gcc.dg/alpha-max-1.c, gcc.dg/alpha-max-2.c: New.
From-SVN: r54229
2002-06-04 06:06:38 +02:00
|
|
|
|
alpha.c (mode_mask_operand): Simplify without ifdefs.
* config/alpha/alpha.c (mode_mask_operand): Simplify without ifdefs.
(print_operand) ['U']: Likewise.
(alpha_expand_unaligned_store): Correct constants for 32-bit cross.
(alpha_expand_unaligned_store_words): Likewise.
(alpha_expand_builtin_vector_binop): Fix typo.
(enum alpha_builtin, code_for_builtin): Add remaining ext, ins, msk,
umulh, and cix insns.
(one_arg_builtins): Add cix builtins.
(two_arg_builtins): Add ext, ins, msk, umulh builtins.
(alpha_expand_builtin): Fix typo in arity.
* config/alpha/alpha.md (UNSPEC_CTLZ, UNSPEC_CTPOP): New.
(builtin_extbl, builtin_extwl, builtin_extll, builtin_extwh,
builtin_extlh, builtin_insbl, builtin_inswl, builtin_insll,
builtin_insql, builtin_inswh, builtin_inslh, builtin_insqh,
builtin_mskbl, builtin_mskwl, builtin_mskll, builtin_mskql,
builtin_mskwh, builtin_msklh, builtin_mskqh, builtin_cttz,
builtin_ctlz, builtin_ctpop): New.
* doc/extend.texi (Alpha Built-in Functions): Update.
* gcc.dg/alpha-base-1.c: Add ext/ins/msk/umulh cases.
* gcc.dg/alpha-max-1.c, gcc.dg/alpha-max-2.c: Use -mcpu=ev67.
* gcc.dg/alpha-cix-1.c, gcc.dg/alpha-cix-2.c: New.
From-SVN: r54267
2002-06-05 00:46:00 +02:00
|
|
|
The following built-in functions are always with @option{-mcix}
|
|
|
|
or @option{-mcpu=@var{cpu}} where @var{cpu} is @code{ev67} or
|
|
|
|
later. They all generate the machine instruction that is part
|
|
|
|
of the name.
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
alpha.c (mode_mask_operand): Simplify without ifdefs.
* config/alpha/alpha.c (mode_mask_operand): Simplify without ifdefs.
(print_operand) ['U']: Likewise.
(alpha_expand_unaligned_store): Correct constants for 32-bit cross.
(alpha_expand_unaligned_store_words): Likewise.
(alpha_expand_builtin_vector_binop): Fix typo.
(enum alpha_builtin, code_for_builtin): Add remaining ext, ins, msk,
umulh, and cix insns.
(one_arg_builtins): Add cix builtins.
(two_arg_builtins): Add ext, ins, msk, umulh builtins.
(alpha_expand_builtin): Fix typo in arity.
* config/alpha/alpha.md (UNSPEC_CTLZ, UNSPEC_CTPOP): New.
(builtin_extbl, builtin_extwl, builtin_extll, builtin_extwh,
builtin_extlh, builtin_insbl, builtin_inswl, builtin_insll,
builtin_insql, builtin_inswh, builtin_inslh, builtin_insqh,
builtin_mskbl, builtin_mskwl, builtin_mskll, builtin_mskql,
builtin_mskwh, builtin_msklh, builtin_mskqh, builtin_cttz,
builtin_ctlz, builtin_ctpop): New.
* doc/extend.texi (Alpha Built-in Functions): Update.
* gcc.dg/alpha-base-1.c: Add ext/ins/msk/umulh cases.
* gcc.dg/alpha-max-1.c, gcc.dg/alpha-max-2.c: Use -mcpu=ev67.
* gcc.dg/alpha-cix-1.c, gcc.dg/alpha-cix-2.c: New.
From-SVN: r54267
2002-06-05 00:46:00 +02:00
|
|
|
long __builtin_alpha_cttz (long)
|
|
|
|
long __builtin_alpha_ctlz (long)
|
|
|
|
long __builtin_alpha_ctpop (long)
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
alpha.c (mode_mask_operand): Simplify without ifdefs.
* config/alpha/alpha.c (mode_mask_operand): Simplify without ifdefs.
(print_operand) ['U']: Likewise.
(alpha_expand_unaligned_store): Correct constants for 32-bit cross.
(alpha_expand_unaligned_store_words): Likewise.
(alpha_expand_builtin_vector_binop): Fix typo.
(enum alpha_builtin, code_for_builtin): Add remaining ext, ins, msk,
umulh, and cix insns.
(one_arg_builtins): Add cix builtins.
(two_arg_builtins): Add ext, ins, msk, umulh builtins.
(alpha_expand_builtin): Fix typo in arity.
* config/alpha/alpha.md (UNSPEC_CTLZ, UNSPEC_CTPOP): New.
(builtin_extbl, builtin_extwl, builtin_extll, builtin_extwh,
builtin_extlh, builtin_insbl, builtin_inswl, builtin_insll,
builtin_insql, builtin_inswh, builtin_inslh, builtin_insqh,
builtin_mskbl, builtin_mskwl, builtin_mskll, builtin_mskql,
builtin_mskwh, builtin_msklh, builtin_mskqh, builtin_cttz,
builtin_ctlz, builtin_ctpop): New.
* doc/extend.texi (Alpha Built-in Functions): Update.
* gcc.dg/alpha-base-1.c: Add ext/ins/msk/umulh cases.
* gcc.dg/alpha-max-1.c, gcc.dg/alpha-max-2.c: Use -mcpu=ev67.
* gcc.dg/alpha-cix-1.c, gcc.dg/alpha-cix-2.c: New.
From-SVN: r54267
2002-06-05 00:46:00 +02:00
|
|
|
|
2002-06-12 04:57:02 +02:00
|
|
|
The following builtins are available on systems that use the OSF/1
|
|
|
|
PALcode. Normally they invoke the @code{rduniq} and @code{wruniq}
|
|
|
|
PAL calls, but when invoked with @option{-mtls-kernel}, they invoke
|
|
|
|
@code{rdval} and @code{wrval}.
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2002-06-12 04:57:02 +02:00
|
|
|
void *__builtin_thread_pointer (void)
|
|
|
|
void __builtin_set_thread_pointer (void *)
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2002-06-12 04:57:02 +02:00
|
|
|
|
2003-06-20 10:08:20 +02:00
|
|
|
@node ARM Built-in Functions
|
|
|
|
@subsection ARM Built-in Functions
|
|
|
|
|
|
|
|
These built-in functions are available for the ARM family of
|
|
|
|
processors, when the @option{-mcpu=iwmmxt} switch is used:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2004-03-24 04:03:25 +01:00
|
|
|
typedef int v2si __attribute__ ((vector_size (8)));
|
|
|
|
typedef short v4hi __attribute__ ((vector_size (8)));
|
|
|
|
typedef char v8qi __attribute__ ((vector_size (8)));
|
|
|
|
|
|
|
|
int __builtin_arm_getwcx (int)
|
|
|
|
void __builtin_arm_setwcx (int, int)
|
|
|
|
int __builtin_arm_textrmsb (v8qi, int)
|
|
|
|
int __builtin_arm_textrmsh (v4hi, int)
|
|
|
|
int __builtin_arm_textrmsw (v2si, int)
|
|
|
|
int __builtin_arm_textrmub (v8qi, int)
|
|
|
|
int __builtin_arm_textrmuh (v4hi, int)
|
|
|
|
int __builtin_arm_textrmuw (v2si, int)
|
|
|
|
v8qi __builtin_arm_tinsrb (v8qi, int)
|
|
|
|
v4hi __builtin_arm_tinsrh (v4hi, int)
|
|
|
|
v2si __builtin_arm_tinsrw (v2si, int)
|
|
|
|
long long __builtin_arm_tmia (long long, int, int)
|
|
|
|
long long __builtin_arm_tmiabb (long long, int, int)
|
|
|
|
long long __builtin_arm_tmiabt (long long, int, int)
|
|
|
|
long long __builtin_arm_tmiaph (long long, int, int)
|
|
|
|
long long __builtin_arm_tmiatb (long long, int, int)
|
|
|
|
long long __builtin_arm_tmiatt (long long, int, int)
|
|
|
|
int __builtin_arm_tmovmskb (v8qi)
|
|
|
|
int __builtin_arm_tmovmskh (v4hi)
|
|
|
|
int __builtin_arm_tmovmskw (v2si)
|
|
|
|
long long __builtin_arm_waccb (v8qi)
|
|
|
|
long long __builtin_arm_wacch (v4hi)
|
|
|
|
long long __builtin_arm_waccw (v2si)
|
|
|
|
v8qi __builtin_arm_waddb (v8qi, v8qi)
|
|
|
|
v8qi __builtin_arm_waddbss (v8qi, v8qi)
|
|
|
|
v8qi __builtin_arm_waddbus (v8qi, v8qi)
|
|
|
|
v4hi __builtin_arm_waddh (v4hi, v4hi)
|
|
|
|
v4hi __builtin_arm_waddhss (v4hi, v4hi)
|
|
|
|
v4hi __builtin_arm_waddhus (v4hi, v4hi)
|
2003-06-20 10:08:20 +02:00
|
|
|
v2si __builtin_arm_waddw (v2si, v2si)
|
|
|
|
v2si __builtin_arm_waddwss (v2si, v2si)
|
|
|
|
v2si __builtin_arm_waddwus (v2si, v2si)
|
2004-03-24 04:03:25 +01:00
|
|
|
v8qi __builtin_arm_walign (v8qi, v8qi, int)
|
|
|
|
long long __builtin_arm_wand(long long, long long)
|
|
|
|
long long __builtin_arm_wandn (long long, long long)
|
|
|
|
v8qi __builtin_arm_wavg2b (v8qi, v8qi)
|
|
|
|
v8qi __builtin_arm_wavg2br (v8qi, v8qi)
|
|
|
|
v4hi __builtin_arm_wavg2h (v4hi, v4hi)
|
|
|
|
v4hi __builtin_arm_wavg2hr (v4hi, v4hi)
|
|
|
|
v8qi __builtin_arm_wcmpeqb (v8qi, v8qi)
|
|
|
|
v4hi __builtin_arm_wcmpeqh (v4hi, v4hi)
|
2003-06-20 10:08:20 +02:00
|
|
|
v2si __builtin_arm_wcmpeqw (v2si, v2si)
|
2004-03-24 04:03:25 +01:00
|
|
|
v8qi __builtin_arm_wcmpgtsb (v8qi, v8qi)
|
|
|
|
v4hi __builtin_arm_wcmpgtsh (v4hi, v4hi)
|
2003-06-20 10:08:20 +02:00
|
|
|
v2si __builtin_arm_wcmpgtsw (v2si, v2si)
|
2004-03-24 04:03:25 +01:00
|
|
|
v8qi __builtin_arm_wcmpgtub (v8qi, v8qi)
|
|
|
|
v4hi __builtin_arm_wcmpgtuh (v4hi, v4hi)
|
|
|
|
v2si __builtin_arm_wcmpgtuw (v2si, v2si)
|
|
|
|
long long __builtin_arm_wmacs (long long, v4hi, v4hi)
|
|
|
|
long long __builtin_arm_wmacsz (v4hi, v4hi)
|
|
|
|
long long __builtin_arm_wmacu (long long, v4hi, v4hi)
|
|
|
|
long long __builtin_arm_wmacuz (v4hi, v4hi)
|
|
|
|
v4hi __builtin_arm_wmadds (v4hi, v4hi)
|
|
|
|
v4hi __builtin_arm_wmaddu (v4hi, v4hi)
|
|
|
|
v8qi __builtin_arm_wmaxsb (v8qi, v8qi)
|
|
|
|
v4hi __builtin_arm_wmaxsh (v4hi, v4hi)
|
2003-06-20 10:08:20 +02:00
|
|
|
v2si __builtin_arm_wmaxsw (v2si, v2si)
|
2004-03-24 04:03:25 +01:00
|
|
|
v8qi __builtin_arm_wmaxub (v8qi, v8qi)
|
|
|
|
v4hi __builtin_arm_wmaxuh (v4hi, v4hi)
|
2003-06-20 10:08:20 +02:00
|
|
|
v2si __builtin_arm_wmaxuw (v2si, v2si)
|
2004-03-24 04:03:25 +01:00
|
|
|
v8qi __builtin_arm_wminsb (v8qi, v8qi)
|
|
|
|
v4hi __builtin_arm_wminsh (v4hi, v4hi)
|
2003-06-20 10:08:20 +02:00
|
|
|
v2si __builtin_arm_wminsw (v2si, v2si)
|
2004-03-24 04:03:25 +01:00
|
|
|
v8qi __builtin_arm_wminub (v8qi, v8qi)
|
|
|
|
v4hi __builtin_arm_wminuh (v4hi, v4hi)
|
2003-06-20 10:08:20 +02:00
|
|
|
v2si __builtin_arm_wminuw (v2si, v2si)
|
2004-03-24 04:03:25 +01:00
|
|
|
v4hi __builtin_arm_wmulsm (v4hi, v4hi)
|
|
|
|
v4hi __builtin_arm_wmulul (v4hi, v4hi)
|
|
|
|
v4hi __builtin_arm_wmulum (v4hi, v4hi)
|
|
|
|
long long __builtin_arm_wor (long long, long long)
|
|
|
|
v2si __builtin_arm_wpackdss (long long, long long)
|
|
|
|
v2si __builtin_arm_wpackdus (long long, long long)
|
|
|
|
v8qi __builtin_arm_wpackhss (v4hi, v4hi)
|
|
|
|
v8qi __builtin_arm_wpackhus (v4hi, v4hi)
|
|
|
|
v4hi __builtin_arm_wpackwss (v2si, v2si)
|
|
|
|
v4hi __builtin_arm_wpackwus (v2si, v2si)
|
|
|
|
long long __builtin_arm_wrord (long long, long long)
|
|
|
|
long long __builtin_arm_wrordi (long long, int)
|
|
|
|
v4hi __builtin_arm_wrorh (v4hi, long long)
|
|
|
|
v4hi __builtin_arm_wrorhi (v4hi, int)
|
|
|
|
v2si __builtin_arm_wrorw (v2si, long long)
|
|
|
|
v2si __builtin_arm_wrorwi (v2si, int)
|
|
|
|
v2si __builtin_arm_wsadb (v8qi, v8qi)
|
|
|
|
v2si __builtin_arm_wsadbz (v8qi, v8qi)
|
|
|
|
v2si __builtin_arm_wsadh (v4hi, v4hi)
|
|
|
|
v2si __builtin_arm_wsadhz (v4hi, v4hi)
|
|
|
|
v4hi __builtin_arm_wshufh (v4hi, int)
|
|
|
|
long long __builtin_arm_wslld (long long, long long)
|
|
|
|
long long __builtin_arm_wslldi (long long, int)
|
|
|
|
v4hi __builtin_arm_wsllh (v4hi, long long)
|
|
|
|
v4hi __builtin_arm_wsllhi (v4hi, int)
|
|
|
|
v2si __builtin_arm_wsllw (v2si, long long)
|
2003-06-20 10:08:20 +02:00
|
|
|
v2si __builtin_arm_wsllwi (v2si, int)
|
2004-03-24 04:03:25 +01:00
|
|
|
long long __builtin_arm_wsrad (long long, long long)
|
|
|
|
long long __builtin_arm_wsradi (long long, int)
|
|
|
|
v4hi __builtin_arm_wsrah (v4hi, long long)
|
|
|
|
v4hi __builtin_arm_wsrahi (v4hi, int)
|
|
|
|
v2si __builtin_arm_wsraw (v2si, long long)
|
2003-06-20 10:08:20 +02:00
|
|
|
v2si __builtin_arm_wsrawi (v2si, int)
|
2004-03-24 04:03:25 +01:00
|
|
|
long long __builtin_arm_wsrld (long long, long long)
|
|
|
|
long long __builtin_arm_wsrldi (long long, int)
|
|
|
|
v4hi __builtin_arm_wsrlh (v4hi, long long)
|
|
|
|
v4hi __builtin_arm_wsrlhi (v4hi, int)
|
|
|
|
v2si __builtin_arm_wsrlw (v2si, long long)
|
2003-06-20 10:08:20 +02:00
|
|
|
v2si __builtin_arm_wsrlwi (v2si, int)
|
2004-03-24 04:03:25 +01:00
|
|
|
v8qi __builtin_arm_wsubb (v8qi, v8qi)
|
|
|
|
v8qi __builtin_arm_wsubbss (v8qi, v8qi)
|
|
|
|
v8qi __builtin_arm_wsubbus (v8qi, v8qi)
|
|
|
|
v4hi __builtin_arm_wsubh (v4hi, v4hi)
|
|
|
|
v4hi __builtin_arm_wsubhss (v4hi, v4hi)
|
|
|
|
v4hi __builtin_arm_wsubhus (v4hi, v4hi)
|
|
|
|
v2si __builtin_arm_wsubw (v2si, v2si)
|
|
|
|
v2si __builtin_arm_wsubwss (v2si, v2si)
|
|
|
|
v2si __builtin_arm_wsubwus (v2si, v2si)
|
|
|
|
v4hi __builtin_arm_wunpckehsb (v8qi)
|
|
|
|
v2si __builtin_arm_wunpckehsh (v4hi)
|
|
|
|
long long __builtin_arm_wunpckehsw (v2si)
|
|
|
|
v4hi __builtin_arm_wunpckehub (v8qi)
|
|
|
|
v2si __builtin_arm_wunpckehuh (v4hi)
|
|
|
|
long long __builtin_arm_wunpckehuw (v2si)
|
|
|
|
v4hi __builtin_arm_wunpckelsb (v8qi)
|
|
|
|
v2si __builtin_arm_wunpckelsh (v4hi)
|
|
|
|
long long __builtin_arm_wunpckelsw (v2si)
|
|
|
|
v4hi __builtin_arm_wunpckelub (v8qi)
|
|
|
|
v2si __builtin_arm_wunpckeluh (v4hi)
|
|
|
|
long long __builtin_arm_wunpckeluw (v2si)
|
|
|
|
v8qi __builtin_arm_wunpckihb (v8qi, v8qi)
|
|
|
|
v4hi __builtin_arm_wunpckihh (v4hi, v4hi)
|
2003-06-20 10:08:20 +02:00
|
|
|
v2si __builtin_arm_wunpckihw (v2si, v2si)
|
2004-03-24 04:03:25 +01:00
|
|
|
v8qi __builtin_arm_wunpckilb (v8qi, v8qi)
|
|
|
|
v4hi __builtin_arm_wunpckilh (v4hi, v4hi)
|
2003-06-20 10:08:20 +02:00
|
|
|
v2si __builtin_arm_wunpckilw (v2si, v2si)
|
2004-03-24 04:03:25 +01:00
|
|
|
long long __builtin_arm_wxor (long long, long long)
|
|
|
|
long long __builtin_arm_wzero ()
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2003-06-20 10:08:20 +02:00
|
|
|
|
2004-09-10 09:54:15 +02:00
|
|
|
@node FR-V Built-in Functions
|
|
|
|
@subsection FR-V Built-in Functions
|
|
|
|
|
|
|
|
GCC provides many FR-V-specific built-in functions. In general,
|
|
|
|
these functions are intended to be compatible with those described
|
|
|
|
by @cite{FR-V Family, Softune C/C++ Compiler Manual (V6), Fujitsu
|
|
|
|
Semiconductor}. The two exceptions are @code{__MDUNPACKH} and
|
|
|
|
@code{__MBTOHE}, the gcc forms of which pass 128-bit values by
|
|
|
|
pointer rather than by value.
|
|
|
|
|
|
|
|
Most of the functions are named after specific FR-V instructions.
|
2004-09-10 13:26:25 +02:00
|
|
|
Such functions are said to be ``directly mapped'' and are summarized
|
2004-09-10 09:54:15 +02:00
|
|
|
here in tabular form.
|
|
|
|
|
|
|
|
@menu
|
|
|
|
* Argument Types::
|
|
|
|
* Directly-mapped Integer Functions::
|
|
|
|
* Directly-mapped Media Functions::
|
|
|
|
* Other Built-in Functions::
|
|
|
|
@end menu
|
|
|
|
|
|
|
|
@node Argument Types
|
|
|
|
@subsubsection Argument Types
|
|
|
|
|
|
|
|
The arguments to the built-in functions can be divided into three groups:
|
|
|
|
register numbers, compile-time constants and run-time values. In order
|
|
|
|
to make this classification clear at a glance, the arguments and return
|
|
|
|
values are given the following pseudo types:
|
|
|
|
|
|
|
|
@multitable @columnfractions .20 .30 .15 .35
|
|
|
|
@item Pseudo type @tab Real C type @tab Constant? @tab Description
|
|
|
|
@item @code{uh} @tab @code{unsigned short} @tab No @tab an unsigned halfword
|
|
|
|
@item @code{uw1} @tab @code{unsigned int} @tab No @tab an unsigned word
|
|
|
|
@item @code{sw1} @tab @code{int} @tab No @tab a signed word
|
|
|
|
@item @code{uw2} @tab @code{unsigned long long} @tab No
|
|
|
|
@tab an unsigned doubleword
|
|
|
|
@item @code{sw2} @tab @code{long long} @tab No @tab a signed doubleword
|
|
|
|
@item @code{const} @tab @code{int} @tab Yes @tab an integer constant
|
|
|
|
@item @code{acc} @tab @code{int} @tab Yes @tab an ACC register number
|
|
|
|
@item @code{iacc} @tab @code{int} @tab Yes @tab an IACC register number
|
|
|
|
@end multitable
|
|
|
|
|
|
|
|
These pseudo types are not defined by GCC, they are simply a notational
|
|
|
|
convenience used in this manual.
|
|
|
|
|
|
|
|
Arguments of type @code{uh}, @code{uw1}, @code{sw1}, @code{uw2}
|
|
|
|
and @code{sw2} are evaluated at run time. They correspond to
|
|
|
|
register operands in the underlying FR-V instructions.
|
|
|
|
|
|
|
|
@code{const} arguments represent immediate operands in the underlying
|
|
|
|
FR-V instructions. They must be compile-time constants.
|
|
|
|
|
|
|
|
@code{acc} arguments are evaluated at compile time and specify the number
|
|
|
|
of an accumulator register. For example, an @code{acc} argument of 2
|
|
|
|
will select the ACC2 register.
|
|
|
|
|
|
|
|
@code{iacc} arguments are similar to @code{acc} arguments but specify the
|
|
|
|
number of an IACC register. See @pxref{Other Built-in Functions}
|
|
|
|
for more details.
|
|
|
|
|
|
|
|
@node Directly-mapped Integer Functions
|
|
|
|
@subsubsection Directly-mapped Integer Functions
|
|
|
|
|
|
|
|
The functions listed below map directly to FR-V I-type instructions.
|
|
|
|
|
|
|
|
@multitable @columnfractions .45 .32 .23
|
|
|
|
@item Function prototype @tab Example usage @tab Assembly output
|
|
|
|
@item @code{sw1 __ADDSS (sw1, sw1)}
|
|
|
|
@tab @code{@var{c} = __ADDSS (@var{a}, @var{b})}
|
|
|
|
@tab @code{ADDSS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{sw1 __SCAN (sw1, sw1)}
|
|
|
|
@tab @code{@var{c} = __SCAN (@var{a}, @var{b})}
|
|
|
|
@tab @code{SCAN @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{sw1 __SCUTSS (sw1)}
|
|
|
|
@tab @code{@var{b} = __SCUTSS (@var{a})}
|
|
|
|
@tab @code{SCUTSS @var{a},@var{b}}
|
|
|
|
@item @code{sw1 __SLASS (sw1, sw1)}
|
|
|
|
@tab @code{@var{c} = __SLASS (@var{a}, @var{b})}
|
|
|
|
@tab @code{SLASS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __SMASS (sw1, sw1)}
|
|
|
|
@tab @code{__SMASS (@var{a}, @var{b})}
|
|
|
|
@tab @code{SMASS @var{a},@var{b}}
|
|
|
|
@item @code{void __SMSSS (sw1, sw1)}
|
|
|
|
@tab @code{__SMSSS (@var{a}, @var{b})}
|
|
|
|
@tab @code{SMSSS @var{a},@var{b}}
|
|
|
|
@item @code{void __SMU (sw1, sw1)}
|
|
|
|
@tab @code{__SMU (@var{a}, @var{b})}
|
|
|
|
@tab @code{SMU @var{a},@var{b}}
|
|
|
|
@item @code{sw2 __SMUL (sw1, sw1)}
|
|
|
|
@tab @code{@var{c} = __SMUL (@var{a}, @var{b})}
|
|
|
|
@tab @code{SMUL @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{sw1 __SUBSS (sw1, sw1)}
|
|
|
|
@tab @code{@var{c} = __SUBSS (@var{a}, @var{b})}
|
|
|
|
@tab @code{SUBSS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{uw2 __UMUL (uw1, uw1)}
|
|
|
|
@tab @code{@var{c} = __UMUL (@var{a}, @var{b})}
|
|
|
|
@tab @code{UMUL @var{a},@var{b},@var{c}}
|
|
|
|
@end multitable
|
|
|
|
|
|
|
|
@node Directly-mapped Media Functions
|
|
|
|
@subsubsection Directly-mapped Media Functions
|
|
|
|
|
|
|
|
The functions listed below map directly to FR-V M-type instructions.
|
|
|
|
|
|
|
|
@multitable @columnfractions .45 .32 .23
|
|
|
|
@item Function prototype @tab Example usage @tab Assembly output
|
|
|
|
@item @code{uw1 __MABSHS (sw1)}
|
|
|
|
@tab @code{@var{b} = __MABSHS (@var{a})}
|
|
|
|
@tab @code{MABSHS @var{a},@var{b}}
|
|
|
|
@item @code{void __MADDACCS (acc, acc)}
|
|
|
|
@tab @code{__MADDACCS (@var{b}, @var{a})}
|
|
|
|
@tab @code{MADDACCS @var{a},@var{b}}
|
|
|
|
@item @code{sw1 __MADDHSS (sw1, sw1)}
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@tab @code{@var{c} = __MADDHSS (@var{a}, @var{b})}
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@tab @code{MADDHSS @var{a},@var{b},@var{c}}
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@item @code{uw1 __MADDHUS (uw1, uw1)}
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@tab @code{@var{c} = __MADDHUS (@var{a}, @var{b})}
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@tab @code{MADDHUS @var{a},@var{b},@var{c}}
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@item @code{uw1 __MAND (uw1, uw1)}
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@tab @code{@var{c} = __MAND (@var{a}, @var{b})}
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@tab @code{MAND @var{a},@var{b},@var{c}}
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@item @code{void __MASACCS (acc, acc)}
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@tab @code{__MASACCS (@var{b}, @var{a})}
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@tab @code{MASACCS @var{a},@var{b}}
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@item @code{uw1 __MAVEH (uw1, uw1)}
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@tab @code{@var{c} = __MAVEH (@var{a}, @var{b})}
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@tab @code{MAVEH @var{a},@var{b},@var{c}}
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@item @code{uw2 __MBTOH (uw1)}
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@tab @code{@var{b} = __MBTOH (@var{a})}
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@tab @code{MBTOH @var{a},@var{b}}
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@item @code{void __MBTOHE (uw1 *, uw1)}
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@tab @code{__MBTOHE (&@var{b}, @var{a})}
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@tab @code{MBTOHE @var{a},@var{b}}
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@item @code{void __MCLRACC (acc)}
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@tab @code{__MCLRACC (@var{a})}
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@tab @code{MCLRACC @var{a}}
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@item @code{void __MCLRACCA (void)}
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@tab @code{__MCLRACCA ()}
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@tab @code{MCLRACCA}
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@item @code{uw1 __Mcop1 (uw1, uw1)}
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@tab @code{@var{c} = __Mcop1 (@var{a}, @var{b})}
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@tab @code{Mcop1 @var{a},@var{b},@var{c}}
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@item @code{uw1 __Mcop2 (uw1, uw1)}
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@tab @code{@var{c} = __Mcop2 (@var{a}, @var{b})}
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@tab @code{Mcop2 @var{a},@var{b},@var{c}}
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|
@item @code{uw1 __MCPLHI (uw2, const)}
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|
@tab @code{@var{c} = __MCPLHI (@var{a}, @var{b})}
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@tab @code{MCPLHI @var{a},#@var{b},@var{c}}
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|
|
@item @code{uw1 __MCPLI (uw2, const)}
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|
|
@tab @code{@var{c} = __MCPLI (@var{a}, @var{b})}
|
|
|
|
@tab @code{MCPLI @var{a},#@var{b},@var{c}}
|
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|
|
@item @code{void __MCPXIS (acc, sw1, sw1)}
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|
|
@tab @code{__MCPXIS (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MCPXIS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MCPXIU (acc, uw1, uw1)}
|
|
|
|
@tab @code{__MCPXIU (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MCPXIU @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MCPXRS (acc, sw1, sw1)}
|
|
|
|
@tab @code{__MCPXRS (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MCPXRS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MCPXRU (acc, uw1, uw1)}
|
|
|
|
@tab @code{__MCPXRU (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MCPXRU @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{uw1 __MCUT (acc, uw1)}
|
|
|
|
@tab @code{@var{c} = __MCUT (@var{a}, @var{b})}
|
|
|
|
@tab @code{MCUT @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{uw1 __MCUTSS (acc, sw1)}
|
|
|
|
@tab @code{@var{c} = __MCUTSS (@var{a}, @var{b})}
|
|
|
|
@tab @code{MCUTSS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MDADDACCS (acc, acc)}
|
|
|
|
@tab @code{__MDADDACCS (@var{b}, @var{a})}
|
|
|
|
@tab @code{MDADDACCS @var{a},@var{b}}
|
|
|
|
@item @code{void __MDASACCS (acc, acc)}
|
|
|
|
@tab @code{__MDASACCS (@var{b}, @var{a})}
|
|
|
|
@tab @code{MDASACCS @var{a},@var{b}}
|
|
|
|
@item @code{uw2 __MDCUTSSI (acc, const)}
|
|
|
|
@tab @code{@var{c} = __MDCUTSSI (@var{a}, @var{b})}
|
|
|
|
@tab @code{MDCUTSSI @var{a},#@var{b},@var{c}}
|
|
|
|
@item @code{uw2 __MDPACKH (uw2, uw2)}
|
|
|
|
@tab @code{@var{c} = __MDPACKH (@var{a}, @var{b})}
|
|
|
|
@tab @code{MDPACKH @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{uw2 __MDROTLI (uw2, const)}
|
|
|
|
@tab @code{@var{c} = __MDROTLI (@var{a}, @var{b})}
|
|
|
|
@tab @code{MDROTLI @var{a},#@var{b},@var{c}}
|
|
|
|
@item @code{void __MDSUBACCS (acc, acc)}
|
|
|
|
@tab @code{__MDSUBACCS (@var{b}, @var{a})}
|
|
|
|
@tab @code{MDSUBACCS @var{a},@var{b}}
|
|
|
|
@item @code{void __MDUNPACKH (uw1 *, uw2)}
|
|
|
|
@tab @code{__MDUNPACKH (&@var{b}, @var{a})}
|
|
|
|
@tab @code{MDUNPACKH @var{a},@var{b}}
|
|
|
|
@item @code{uw2 __MEXPDHD (uw1, const)}
|
|
|
|
@tab @code{@var{c} = __MEXPDHD (@var{a}, @var{b})}
|
|
|
|
@tab @code{MEXPDHD @var{a},#@var{b},@var{c}}
|
|
|
|
@item @code{uw1 __MEXPDHW (uw1, const)}
|
|
|
|
@tab @code{@var{c} = __MEXPDHW (@var{a}, @var{b})}
|
|
|
|
@tab @code{MEXPDHW @var{a},#@var{b},@var{c}}
|
|
|
|
@item @code{uw1 __MHDSETH (uw1, const)}
|
|
|
|
@tab @code{@var{c} = __MHDSETH (@var{a}, @var{b})}
|
|
|
|
@tab @code{MHDSETH @var{a},#@var{b},@var{c}}
|
|
|
|
@item @code{sw1 __MHDSETS (const)}
|
|
|
|
@tab @code{@var{b} = __MHDSETS (@var{a})}
|
|
|
|
@tab @code{MHDSETS #@var{a},@var{b}}
|
|
|
|
@item @code{uw1 __MHSETHIH (uw1, const)}
|
|
|
|
@tab @code{@var{b} = __MHSETHIH (@var{b}, @var{a})}
|
|
|
|
@tab @code{MHSETHIH #@var{a},@var{b}}
|
|
|
|
@item @code{sw1 __MHSETHIS (sw1, const)}
|
|
|
|
@tab @code{@var{b} = __MHSETHIS (@var{b}, @var{a})}
|
|
|
|
@tab @code{MHSETHIS #@var{a},@var{b}}
|
|
|
|
@item @code{uw1 __MHSETLOH (uw1, const)}
|
|
|
|
@tab @code{@var{b} = __MHSETLOH (@var{b}, @var{a})}
|
|
|
|
@tab @code{MHSETLOH #@var{a},@var{b}}
|
|
|
|
@item @code{sw1 __MHSETLOS (sw1, const)}
|
|
|
|
@tab @code{@var{b} = __MHSETLOS (@var{b}, @var{a})}
|
|
|
|
@tab @code{MHSETLOS #@var{a},@var{b}}
|
|
|
|
@item @code{uw1 __MHTOB (uw2)}
|
|
|
|
@tab @code{@var{b} = __MHTOB (@var{a})}
|
|
|
|
@tab @code{MHTOB @var{a},@var{b}}
|
|
|
|
@item @code{void __MMACHS (acc, sw1, sw1)}
|
|
|
|
@tab @code{__MMACHS (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MMACHS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MMACHU (acc, uw1, uw1)}
|
|
|
|
@tab @code{__MMACHU (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MMACHU @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MMRDHS (acc, sw1, sw1)}
|
|
|
|
@tab @code{__MMRDHS (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MMRDHS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MMRDHU (acc, uw1, uw1)}
|
|
|
|
@tab @code{__MMRDHU (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MMRDHU @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MMULHS (acc, sw1, sw1)}
|
|
|
|
@tab @code{__MMULHS (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MMULHS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MMULHU (acc, uw1, uw1)}
|
|
|
|
@tab @code{__MMULHU (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MMULHU @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MMULXHS (acc, sw1, sw1)}
|
|
|
|
@tab @code{__MMULXHS (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MMULXHS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MMULXHU (acc, uw1, uw1)}
|
|
|
|
@tab @code{__MMULXHU (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MMULXHU @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{uw1 __MNOT (uw1)}
|
|
|
|
@tab @code{@var{b} = __MNOT (@var{a})}
|
|
|
|
@tab @code{MNOT @var{a},@var{b}}
|
|
|
|
@item @code{uw1 __MOR (uw1, uw1)}
|
|
|
|
@tab @code{@var{c} = __MOR (@var{a}, @var{b})}
|
|
|
|
@tab @code{MOR @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{uw1 __MPACKH (uh, uh)}
|
|
|
|
@tab @code{@var{c} = __MPACKH (@var{a}, @var{b})}
|
|
|
|
@tab @code{MPACKH @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{sw2 __MQADDHSS (sw2, sw2)}
|
|
|
|
@tab @code{@var{c} = __MQADDHSS (@var{a}, @var{b})}
|
|
|
|
@tab @code{MQADDHSS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{uw2 __MQADDHUS (uw2, uw2)}
|
|
|
|
@tab @code{@var{c} = __MQADDHUS (@var{a}, @var{b})}
|
|
|
|
@tab @code{MQADDHUS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MQCPXIS (acc, sw2, sw2)}
|
|
|
|
@tab @code{__MQCPXIS (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MQCPXIS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MQCPXIU (acc, uw2, uw2)}
|
|
|
|
@tab @code{__MQCPXIU (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MQCPXIU @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MQCPXRS (acc, sw2, sw2)}
|
|
|
|
@tab @code{__MQCPXRS (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MQCPXRS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MQCPXRU (acc, uw2, uw2)}
|
|
|
|
@tab @code{__MQCPXRU (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MQCPXRU @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{sw2 __MQLCLRHS (sw2, sw2)}
|
|
|
|
@tab @code{@var{c} = __MQLCLRHS (@var{a}, @var{b})}
|
|
|
|
@tab @code{MQLCLRHS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{sw2 __MQLMTHS (sw2, sw2)}
|
|
|
|
@tab @code{@var{c} = __MQLMTHS (@var{a}, @var{b})}
|
|
|
|
@tab @code{MQLMTHS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MQMACHS (acc, sw2, sw2)}
|
|
|
|
@tab @code{__MQMACHS (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MQMACHS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MQMACHU (acc, uw2, uw2)}
|
|
|
|
@tab @code{__MQMACHU (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MQMACHU @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MQMACXHS (acc, sw2, sw2)}
|
|
|
|
@tab @code{__MQMACXHS (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MQMACXHS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MQMULHS (acc, sw2, sw2)}
|
|
|
|
@tab @code{__MQMULHS (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MQMULHS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MQMULHU (acc, uw2, uw2)}
|
|
|
|
@tab @code{__MQMULHU (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MQMULHU @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MQMULXHS (acc, sw2, sw2)}
|
|
|
|
@tab @code{__MQMULXHS (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MQMULXHS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MQMULXHU (acc, uw2, uw2)}
|
|
|
|
@tab @code{__MQMULXHU (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MQMULXHU @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{sw2 __MQSATHS (sw2, sw2)}
|
|
|
|
@tab @code{@var{c} = __MQSATHS (@var{a}, @var{b})}
|
|
|
|
@tab @code{MQSATHS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{uw2 __MQSLLHI (uw2, int)}
|
|
|
|
@tab @code{@var{c} = __MQSLLHI (@var{a}, @var{b})}
|
|
|
|
@tab @code{MQSLLHI @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{sw2 __MQSRAHI (sw2, int)}
|
|
|
|
@tab @code{@var{c} = __MQSRAHI (@var{a}, @var{b})}
|
|
|
|
@tab @code{MQSRAHI @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{sw2 __MQSUBHSS (sw2, sw2)}
|
|
|
|
@tab @code{@var{c} = __MQSUBHSS (@var{a}, @var{b})}
|
|
|
|
@tab @code{MQSUBHSS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{uw2 __MQSUBHUS (uw2, uw2)}
|
|
|
|
@tab @code{@var{c} = __MQSUBHUS (@var{a}, @var{b})}
|
|
|
|
@tab @code{MQSUBHUS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MQXMACHS (acc, sw2, sw2)}
|
|
|
|
@tab @code{__MQXMACHS (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MQXMACHS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MQXMACXHS (acc, sw2, sw2)}
|
|
|
|
@tab @code{__MQXMACXHS (@var{c}, @var{a}, @var{b})}
|
|
|
|
@tab @code{MQXMACXHS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{uw1 __MRDACC (acc)}
|
|
|
|
@tab @code{@var{b} = __MRDACC (@var{a})}
|
|
|
|
@tab @code{MRDACC @var{a},@var{b}}
|
|
|
|
@item @code{uw1 __MRDACCG (acc)}
|
|
|
|
@tab @code{@var{b} = __MRDACCG (@var{a})}
|
|
|
|
@tab @code{MRDACCG @var{a},@var{b}}
|
|
|
|
@item @code{uw1 __MROTLI (uw1, const)}
|
|
|
|
@tab @code{@var{c} = __MROTLI (@var{a}, @var{b})}
|
|
|
|
@tab @code{MROTLI @var{a},#@var{b},@var{c}}
|
|
|
|
@item @code{uw1 __MROTRI (uw1, const)}
|
|
|
|
@tab @code{@var{c} = __MROTRI (@var{a}, @var{b})}
|
|
|
|
@tab @code{MROTRI @var{a},#@var{b},@var{c}}
|
|
|
|
@item @code{sw1 __MSATHS (sw1, sw1)}
|
|
|
|
@tab @code{@var{c} = __MSATHS (@var{a}, @var{b})}
|
|
|
|
@tab @code{MSATHS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{uw1 __MSATHU (uw1, uw1)}
|
|
|
|
@tab @code{@var{c} = __MSATHU (@var{a}, @var{b})}
|
|
|
|
@tab @code{MSATHU @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{uw1 __MSLLHI (uw1, const)}
|
|
|
|
@tab @code{@var{c} = __MSLLHI (@var{a}, @var{b})}
|
|
|
|
@tab @code{MSLLHI @var{a},#@var{b},@var{c}}
|
|
|
|
@item @code{sw1 __MSRAHI (sw1, const)}
|
|
|
|
@tab @code{@var{c} = __MSRAHI (@var{a}, @var{b})}
|
|
|
|
@tab @code{MSRAHI @var{a},#@var{b},@var{c}}
|
|
|
|
@item @code{uw1 __MSRLHI (uw1, const)}
|
|
|
|
@tab @code{@var{c} = __MSRLHI (@var{a}, @var{b})}
|
|
|
|
@tab @code{MSRLHI @var{a},#@var{b},@var{c}}
|
|
|
|
@item @code{void __MSUBACCS (acc, acc)}
|
|
|
|
@tab @code{__MSUBACCS (@var{b}, @var{a})}
|
|
|
|
@tab @code{MSUBACCS @var{a},@var{b}}
|
|
|
|
@item @code{sw1 __MSUBHSS (sw1, sw1)}
|
|
|
|
@tab @code{@var{c} = __MSUBHSS (@var{a}, @var{b})}
|
|
|
|
@tab @code{MSUBHSS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{uw1 __MSUBHUS (uw1, uw1)}
|
|
|
|
@tab @code{@var{c} = __MSUBHUS (@var{a}, @var{b})}
|
|
|
|
@tab @code{MSUBHUS @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MTRAP (void)}
|
|
|
|
@tab @code{__MTRAP ()}
|
|
|
|
@tab @code{MTRAP}
|
|
|
|
@item @code{uw2 __MUNPACKH (uw1)}
|
|
|
|
@tab @code{@var{b} = __MUNPACKH (@var{a})}
|
|
|
|
@tab @code{MUNPACKH @var{a},@var{b}}
|
|
|
|
@item @code{uw1 __MWCUT (uw2, uw1)}
|
|
|
|
@tab @code{@var{c} = __MWCUT (@var{a}, @var{b})}
|
|
|
|
@tab @code{MWCUT @var{a},@var{b},@var{c}}
|
|
|
|
@item @code{void __MWTACC (acc, uw1)}
|
|
|
|
@tab @code{__MWTACC (@var{b}, @var{a})}
|
|
|
|
@tab @code{MWTACC @var{a},@var{b}}
|
|
|
|
@item @code{void __MWTACCG (acc, uw1)}
|
|
|
|
@tab @code{__MWTACCG (@var{b}, @var{a})}
|
|
|
|
@tab @code{MWTACCG @var{a},@var{b}}
|
|
|
|
@item @code{uw1 __MXOR (uw1, uw1)}
|
|
|
|
@tab @code{@var{c} = __MXOR (@var{a}, @var{b})}
|
|
|
|
@tab @code{MXOR @var{a},@var{b},@var{c}}
|
|
|
|
@end multitable
|
|
|
|
|
|
|
|
@node Other Built-in Functions
|
|
|
|
@subsubsection Other Built-in Functions
|
|
|
|
|
|
|
|
This section describes built-in functions that are not named after
|
|
|
|
a specific FR-V instruction.
|
|
|
|
|
|
|
|
@table @code
|
|
|
|
@item sw2 __IACCreadll (iacc @var{reg})
|
|
|
|
Return the full 64-bit value of IACC0@. The @var{reg} argument is reserved
|
|
|
|
for future expansion and must be 0.
|
|
|
|
|
|
|
|
@item sw1 __IACCreadl (iacc @var{reg})
|
|
|
|
Return the value of IACC0H if @var{reg} is 0 and IACC0L if @var{reg} is 1.
|
|
|
|
Other values of @var{reg} are rejected as invalid.
|
|
|
|
|
|
|
|
@item void __IACCsetll (iacc @var{reg}, sw2 @var{x})
|
|
|
|
Set the full 64-bit value of IACC0 to @var{x}. The @var{reg} argument
|
|
|
|
is reserved for future expansion and must be 0.
|
|
|
|
|
|
|
|
@item void __IACCsetl (iacc @var{reg}, sw1 @var{x})
|
|
|
|
Set IACC0H to @var{x} if @var{reg} is 0 and IACC0L to @var{x} if @var{reg}
|
|
|
|
is 1. Other values of @var{reg} are rejected as invalid.
|
|
|
|
|
|
|
|
@item void __data_prefetch0 (const void *@var{x})
|
|
|
|
Use the @code{dcpl} instruction to load the contents of address @var{x}
|
|
|
|
into the data cache.
|
|
|
|
|
|
|
|
@item void __data_prefetch (const void *@var{x})
|
|
|
|
Use the @code{nldub} instruction to load the contents of address @var{x}
|
|
|
|
into the data cache. The instruction will be issued in slot I1@.
|
|
|
|
@end table
|
|
|
|
|
2002-01-14 21:09:52 +01:00
|
|
|
@node X86 Built-in Functions
|
|
|
|
@subsection X86 Built-in Functions
|
|
|
|
|
|
|
|
These built-in functions are available for the i386 and x86-64 family
|
|
|
|
of computers, depending on the command-line switches used.
|
|
|
|
|
|
|
|
The following machine modes are available for use with MMX built-in functions
|
2002-01-23 03:10:39 +01:00
|
|
|
(@pxref{Vector Extensions}): @code{V2SI} for a vector of two 32-bit integers,
|
|
|
|
@code{V4HI} for a vector of four 16-bit integers, and @code{V8QI} for a
|
|
|
|
vector of eight 8-bit integers. Some of the built-in functions operate on
|
|
|
|
MMX registers as a whole 64-bit entity, these use @code{DI} as their mode.
|
2002-01-14 21:09:52 +01:00
|
|
|
|
|
|
|
If 3Dnow extensions are enabled, @code{V2SF} is used as a mode for a vector
|
2002-01-23 03:10:39 +01:00
|
|
|
of two 32-bit floating point values.
|
2002-01-14 21:09:52 +01:00
|
|
|
|
2002-01-23 03:10:39 +01:00
|
|
|
If SSE extensions are enabled, @code{V4SF} is used for a vector of four 32-bit
|
|
|
|
floating point values. Some instructions use a vector of four 32-bit
|
2002-01-14 21:09:52 +01:00
|
|
|
integers, these use @code{V4SI}. Finally, some instructions operate on an
|
2002-01-23 03:10:39 +01:00
|
|
|
entire vector register, interpreting it as a 128-bit integer, these use mode
|
2002-01-14 21:09:52 +01:00
|
|
|
@code{TI}.
|
|
|
|
|
|
|
|
The following built-in functions are made available by @option{-mmmx}.
|
|
|
|
All of them generate the machine instruction that is part of the name.
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2002-01-14 21:09:52 +01:00
|
|
|
v8qi __builtin_ia32_paddb (v8qi, v8qi)
|
|
|
|
v4hi __builtin_ia32_paddw (v4hi, v4hi)
|
|
|
|
v2si __builtin_ia32_paddd (v2si, v2si)
|
|
|
|
v8qi __builtin_ia32_psubb (v8qi, v8qi)
|
|
|
|
v4hi __builtin_ia32_psubw (v4hi, v4hi)
|
|
|
|
v2si __builtin_ia32_psubd (v2si, v2si)
|
|
|
|
v8qi __builtin_ia32_paddsb (v8qi, v8qi)
|
|
|
|
v4hi __builtin_ia32_paddsw (v4hi, v4hi)
|
|
|
|
v8qi __builtin_ia32_psubsb (v8qi, v8qi)
|
|
|
|
v4hi __builtin_ia32_psubsw (v4hi, v4hi)
|
|
|
|
v8qi __builtin_ia32_paddusb (v8qi, v8qi)
|
|
|
|
v4hi __builtin_ia32_paddusw (v4hi, v4hi)
|
|
|
|
v8qi __builtin_ia32_psubusb (v8qi, v8qi)
|
|
|
|
v4hi __builtin_ia32_psubusw (v4hi, v4hi)
|
|
|
|
v4hi __builtin_ia32_pmullw (v4hi, v4hi)
|
|
|
|
v4hi __builtin_ia32_pmulhw (v4hi, v4hi)
|
|
|
|
di __builtin_ia32_pand (di, di)
|
|
|
|
di __builtin_ia32_pandn (di,di)
|
|
|
|
di __builtin_ia32_por (di, di)
|
|
|
|
di __builtin_ia32_pxor (di, di)
|
|
|
|
v8qi __builtin_ia32_pcmpeqb (v8qi, v8qi)
|
|
|
|
v4hi __builtin_ia32_pcmpeqw (v4hi, v4hi)
|
|
|
|
v2si __builtin_ia32_pcmpeqd (v2si, v2si)
|
|
|
|
v8qi __builtin_ia32_pcmpgtb (v8qi, v8qi)
|
|
|
|
v4hi __builtin_ia32_pcmpgtw (v4hi, v4hi)
|
|
|
|
v2si __builtin_ia32_pcmpgtd (v2si, v2si)
|
|
|
|
v8qi __builtin_ia32_punpckhbw (v8qi, v8qi)
|
|
|
|
v4hi __builtin_ia32_punpckhwd (v4hi, v4hi)
|
|
|
|
v2si __builtin_ia32_punpckhdq (v2si, v2si)
|
|
|
|
v8qi __builtin_ia32_punpcklbw (v8qi, v8qi)
|
|
|
|
v4hi __builtin_ia32_punpcklwd (v4hi, v4hi)
|
|
|
|
v2si __builtin_ia32_punpckldq (v2si, v2si)
|
|
|
|
v8qi __builtin_ia32_packsswb (v4hi, v4hi)
|
|
|
|
v4hi __builtin_ia32_packssdw (v2si, v2si)
|
|
|
|
v8qi __builtin_ia32_packuswb (v4hi, v4hi)
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2002-01-14 21:09:52 +01:00
|
|
|
|
|
|
|
The following built-in functions are made available either with
|
|
|
|
@option{-msse}, or with a combination of @option{-m3dnow} and
|
|
|
|
@option{-march=athlon}. All of them generate the machine
|
|
|
|
instruction that is part of the name.
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2002-01-14 21:09:52 +01:00
|
|
|
v4hi __builtin_ia32_pmulhuw (v4hi, v4hi)
|
|
|
|
v8qi __builtin_ia32_pavgb (v8qi, v8qi)
|
|
|
|
v4hi __builtin_ia32_pavgw (v4hi, v4hi)
|
|
|
|
v4hi __builtin_ia32_psadbw (v8qi, v8qi)
|
|
|
|
v8qi __builtin_ia32_pmaxub (v8qi, v8qi)
|
|
|
|
v4hi __builtin_ia32_pmaxsw (v4hi, v4hi)
|
|
|
|
v8qi __builtin_ia32_pminub (v8qi, v8qi)
|
|
|
|
v4hi __builtin_ia32_pminsw (v4hi, v4hi)
|
|
|
|
int __builtin_ia32_pextrw (v4hi, int)
|
|
|
|
v4hi __builtin_ia32_pinsrw (v4hi, int, int)
|
|
|
|
int __builtin_ia32_pmovmskb (v8qi)
|
|
|
|
void __builtin_ia32_maskmovq (v8qi, v8qi, char *)
|
|
|
|
void __builtin_ia32_movntq (di *, di)
|
|
|
|
void __builtin_ia32_sfence (void)
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2002-01-14 21:09:52 +01:00
|
|
|
|
|
|
|
The following built-in functions are available when @option{-msse} is used.
|
|
|
|
All of them generate the machine instruction that is part of the name.
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2002-01-14 21:09:52 +01:00
|
|
|
int __builtin_ia32_comieq (v4sf, v4sf)
|
|
|
|
int __builtin_ia32_comineq (v4sf, v4sf)
|
|
|
|
int __builtin_ia32_comilt (v4sf, v4sf)
|
|
|
|
int __builtin_ia32_comile (v4sf, v4sf)
|
|
|
|
int __builtin_ia32_comigt (v4sf, v4sf)
|
|
|
|
int __builtin_ia32_comige (v4sf, v4sf)
|
|
|
|
int __builtin_ia32_ucomieq (v4sf, v4sf)
|
|
|
|
int __builtin_ia32_ucomineq (v4sf, v4sf)
|
|
|
|
int __builtin_ia32_ucomilt (v4sf, v4sf)
|
|
|
|
int __builtin_ia32_ucomile (v4sf, v4sf)
|
|
|
|
int __builtin_ia32_ucomigt (v4sf, v4sf)
|
|
|
|
int __builtin_ia32_ucomige (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_addps (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_subps (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_mulps (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_divps (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_addss (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_subss (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_mulss (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_divss (v4sf, v4sf)
|
|
|
|
v4si __builtin_ia32_cmpeqps (v4sf, v4sf)
|
|
|
|
v4si __builtin_ia32_cmpltps (v4sf, v4sf)
|
|
|
|
v4si __builtin_ia32_cmpleps (v4sf, v4sf)
|
|
|
|
v4si __builtin_ia32_cmpgtps (v4sf, v4sf)
|
|
|
|
v4si __builtin_ia32_cmpgeps (v4sf, v4sf)
|
|
|
|
v4si __builtin_ia32_cmpunordps (v4sf, v4sf)
|
|
|
|
v4si __builtin_ia32_cmpneqps (v4sf, v4sf)
|
|
|
|
v4si __builtin_ia32_cmpnltps (v4sf, v4sf)
|
|
|
|
v4si __builtin_ia32_cmpnleps (v4sf, v4sf)
|
|
|
|
v4si __builtin_ia32_cmpngtps (v4sf, v4sf)
|
|
|
|
v4si __builtin_ia32_cmpngeps (v4sf, v4sf)
|
|
|
|
v4si __builtin_ia32_cmpordps (v4sf, v4sf)
|
|
|
|
v4si __builtin_ia32_cmpeqss (v4sf, v4sf)
|
|
|
|
v4si __builtin_ia32_cmpltss (v4sf, v4sf)
|
|
|
|
v4si __builtin_ia32_cmpless (v4sf, v4sf)
|
|
|
|
v4si __builtin_ia32_cmpunordss (v4sf, v4sf)
|
|
|
|
v4si __builtin_ia32_cmpneqss (v4sf, v4sf)
|
|
|
|
v4si __builtin_ia32_cmpnlts (v4sf, v4sf)
|
|
|
|
v4si __builtin_ia32_cmpnless (v4sf, v4sf)
|
|
|
|
v4si __builtin_ia32_cmpordss (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_maxps (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_maxss (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_minps (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_minss (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_andps (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_andnps (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_orps (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_xorps (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_movss (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_movhlps (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_movlhps (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_unpckhps (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_unpcklps (v4sf, v4sf)
|
|
|
|
v4sf __builtin_ia32_cvtpi2ps (v4sf, v2si)
|
|
|
|
v4sf __builtin_ia32_cvtsi2ss (v4sf, int)
|
|
|
|
v2si __builtin_ia32_cvtps2pi (v4sf)
|
|
|
|
int __builtin_ia32_cvtss2si (v4sf)
|
|
|
|
v2si __builtin_ia32_cvttps2pi (v4sf)
|
|
|
|
int __builtin_ia32_cvttss2si (v4sf)
|
|
|
|
v4sf __builtin_ia32_rcpps (v4sf)
|
|
|
|
v4sf __builtin_ia32_rsqrtps (v4sf)
|
|
|
|
v4sf __builtin_ia32_sqrtps (v4sf)
|
|
|
|
v4sf __builtin_ia32_rcpss (v4sf)
|
|
|
|
v4sf __builtin_ia32_rsqrtss (v4sf)
|
|
|
|
v4sf __builtin_ia32_sqrtss (v4sf)
|
|
|
|
v4sf __builtin_ia32_shufps (v4sf, v4sf, int)
|
|
|
|
void __builtin_ia32_movntps (float *, v4sf)
|
|
|
|
int __builtin_ia32_movmskps (v4sf)
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2002-01-14 21:09:52 +01:00
|
|
|
|
|
|
|
The following built-in functions are available when @option{-msse} is used.
|
|
|
|
|
|
|
|
@table @code
|
|
|
|
@item v4sf __builtin_ia32_loadaps (float *)
|
|
|
|
Generates the @code{movaps} machine instruction as a load from memory.
|
|
|
|
@item void __builtin_ia32_storeaps (float *, v4sf)
|
|
|
|
Generates the @code{movaps} machine instruction as a store to memory.
|
|
|
|
@item v4sf __builtin_ia32_loadups (float *)
|
|
|
|
Generates the @code{movups} machine instruction as a load from memory.
|
|
|
|
@item void __builtin_ia32_storeups (float *, v4sf)
|
|
|
|
Generates the @code{movups} machine instruction as a store to memory.
|
|
|
|
@item v4sf __builtin_ia32_loadsss (float *)
|
|
|
|
Generates the @code{movss} machine instruction as a load from memory.
|
|
|
|
@item void __builtin_ia32_storess (float *, v4sf)
|
|
|
|
Generates the @code{movss} machine instruction as a store to memory.
|
|
|
|
@item v4sf __builtin_ia32_loadhps (v4sf, v2si *)
|
|
|
|
Generates the @code{movhps} machine instruction as a load from memory.
|
|
|
|
@item v4sf __builtin_ia32_loadlps (v4sf, v2si *)
|
|
|
|
Generates the @code{movlps} machine instruction as a load from memory
|
|
|
|
@item void __builtin_ia32_storehps (v4sf, v2si *)
|
|
|
|
Generates the @code{movhps} machine instruction as a store to memory.
|
|
|
|
@item void __builtin_ia32_storelps (v4sf, v2si *)
|
|
|
|
Generates the @code{movlps} machine instruction as a store to memory.
|
|
|
|
@end table
|
|
|
|
|
2004-02-24 04:27:11 +01:00
|
|
|
The following built-in functions are available when @option{-msse3} is used.
|
2003-06-26 00:28:27 +02:00
|
|
|
All of them generate the machine instruction that is part of the name.
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2003-06-26 00:28:27 +02:00
|
|
|
v2df __builtin_ia32_addsubpd (v2df, v2df)
|
|
|
|
v2df __builtin_ia32_addsubps (v2df, v2df)
|
|
|
|
v2df __builtin_ia32_haddpd (v2df, v2df)
|
|
|
|
v2df __builtin_ia32_haddps (v2df, v2df)
|
|
|
|
v2df __builtin_ia32_hsubpd (v2df, v2df)
|
|
|
|
v2df __builtin_ia32_hsubps (v2df, v2df)
|
|
|
|
v16qi __builtin_ia32_lddqu (char const *)
|
|
|
|
void __builtin_ia32_monitor (void *, unsigned int, unsigned int)
|
|
|
|
v2df __builtin_ia32_movddup (v2df)
|
|
|
|
v4sf __builtin_ia32_movshdup (v4sf)
|
|
|
|
v4sf __builtin_ia32_movsldup (v4sf)
|
|
|
|
void __builtin_ia32_mwait (unsigned int, unsigned int)
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2003-06-26 00:28:27 +02:00
|
|
|
|
2004-02-24 04:27:11 +01:00
|
|
|
The following built-in functions are available when @option{-msse3} is used.
|
2003-06-26 00:28:27 +02:00
|
|
|
|
|
|
|
@table @code
|
|
|
|
@item v2df __builtin_ia32_loadddup (double const *)
|
|
|
|
Generates the @code{movddup} machine instruction as a load from memory.
|
|
|
|
@end table
|
|
|
|
|
2002-01-14 21:09:52 +01:00
|
|
|
The following built-in functions are available when @option{-m3dnow} is used.
|
|
|
|
All of them generate the machine instruction that is part of the name.
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2002-01-14 21:09:52 +01:00
|
|
|
void __builtin_ia32_femms (void)
|
|
|
|
v8qi __builtin_ia32_pavgusb (v8qi, v8qi)
|
|
|
|
v2si __builtin_ia32_pf2id (v2sf)
|
|
|
|
v2sf __builtin_ia32_pfacc (v2sf, v2sf)
|
|
|
|
v2sf __builtin_ia32_pfadd (v2sf, v2sf)
|
|
|
|
v2si __builtin_ia32_pfcmpeq (v2sf, v2sf)
|
|
|
|
v2si __builtin_ia32_pfcmpge (v2sf, v2sf)
|
|
|
|
v2si __builtin_ia32_pfcmpgt (v2sf, v2sf)
|
|
|
|
v2sf __builtin_ia32_pfmax (v2sf, v2sf)
|
|
|
|
v2sf __builtin_ia32_pfmin (v2sf, v2sf)
|
|
|
|
v2sf __builtin_ia32_pfmul (v2sf, v2sf)
|
|
|
|
v2sf __builtin_ia32_pfrcp (v2sf)
|
|
|
|
v2sf __builtin_ia32_pfrcpit1 (v2sf, v2sf)
|
|
|
|
v2sf __builtin_ia32_pfrcpit2 (v2sf, v2sf)
|
|
|
|
v2sf __builtin_ia32_pfrsqrt (v2sf)
|
|
|
|
v2sf __builtin_ia32_pfrsqrtit1 (v2sf, v2sf)
|
|
|
|
v2sf __builtin_ia32_pfsub (v2sf, v2sf)
|
|
|
|
v2sf __builtin_ia32_pfsubr (v2sf, v2sf)
|
|
|
|
v2sf __builtin_ia32_pi2fd (v2si)
|
|
|
|
v4hi __builtin_ia32_pmulhrw (v4hi, v4hi)
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2002-01-14 21:09:52 +01:00
|
|
|
|
|
|
|
The following built-in functions are available when both @option{-m3dnow}
|
|
|
|
and @option{-march=athlon} are used. All of them generate the machine
|
|
|
|
instruction that is part of the name.
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2002-01-14 21:09:52 +01:00
|
|
|
v2si __builtin_ia32_pf2iw (v2sf)
|
|
|
|
v2sf __builtin_ia32_pfnacc (v2sf, v2sf)
|
|
|
|
v2sf __builtin_ia32_pfpnacc (v2sf, v2sf)
|
|
|
|
v2sf __builtin_ia32_pi2fw (v2si)
|
|
|
|
v2sf __builtin_ia32_pswapdsf (v2sf)
|
|
|
|
v2si __builtin_ia32_pswapdsi (v2si)
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2002-01-14 21:09:52 +01:00
|
|
|
|
2004-10-05 09:15:03 +02:00
|
|
|
@node MIPS Paired-Single Support
|
|
|
|
@subsection MIPS Paired-Single Support
|
|
|
|
|
|
|
|
The MIPS64 architecture includes a number of instructions that
|
|
|
|
operate on pairs of single-precision floating-point values.
|
|
|
|
Each pair is packed into a 64-bit floating-point register,
|
|
|
|
with one element being designated the ``upper half'' and
|
|
|
|
the other being designated the ``lower half''.
|
|
|
|
|
|
|
|
GCC supports paired-single operations using both the generic
|
|
|
|
vector extensions (@pxref{Vector Extensions}) and a collection of
|
|
|
|
MIPS-specific built-in functions. Both kinds of support are
|
|
|
|
enabled by the @option{-mpaired-single} command-line option.
|
|
|
|
|
|
|
|
The vector type associated with paired-single values is usually
|
|
|
|
called @code{v2sf}. It can be defined in C as follows:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
typedef float v2sf __attribute__ ((vector_size (8)));
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@code{v2sf} values are initialized in the same way as aggregates.
|
|
|
|
For example:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
v2sf a = @{1.5, 9.1@};
|
|
|
|
v2sf b;
|
|
|
|
float e, f;
|
|
|
|
b = (v2sf) @{e, f@};
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@emph{Note:} The CPU's endianness determines which value is stored in
|
|
|
|
the upper half of a register and which value is stored in the lower half.
|
|
|
|
On little-endian targets, the first value is the lower one and the second
|
|
|
|
value is the upper one. The opposite order applies to big-endian targets.
|
|
|
|
For example, the code above will set the lower half of @code{a} to
|
|
|
|
@code{1.5} on little-endian targets and @code{9.1} on big-endian targets.
|
|
|
|
|
|
|
|
@menu
|
|
|
|
* Paired-Single Arithmetic::
|
|
|
|
* Paired-Single Built-in Functions::
|
|
|
|
* MIPS-3D Built-in Functions::
|
|
|
|
@end menu
|
|
|
|
|
|
|
|
@node Paired-Single Arithmetic
|
|
|
|
@subsubsection Paired-Single Arithmetic
|
|
|
|
|
|
|
|
The table below lists the @code{v2sf} operations for which hardware
|
|
|
|
support exists. @code{a}, @code{b} and @code{c} are @code{v2sf}
|
|
|
|
values and @code{x} is an integral value.
|
|
|
|
|
|
|
|
@multitable @columnfractions .50 .50
|
|
|
|
@item C code @tab MIPS instruction
|
|
|
|
@item @code{a + b} @tab @code{add.ps}
|
|
|
|
@item @code{a - b} @tab @code{sub.ps}
|
|
|
|
@item @code{-a} @tab @code{neg.ps}
|
|
|
|
@item @code{a * b} @tab @code{mul.ps}
|
|
|
|
@item @code{a * b + c} @tab @code{madd.ps}
|
|
|
|
@item @code{a * b - c} @tab @code{msub.ps}
|
|
|
|
@item @code{-(a * b + c)} @tab @code{nmadd.ps}
|
|
|
|
@item @code{-(a * b - c)} @tab @code{nmsub.ps}
|
|
|
|
@item @code{x ? a : b} @tab @code{movn.ps}/@code{movz.ps}
|
|
|
|
@end multitable
|
|
|
|
|
|
|
|
Note that the multiply-accumulate instructions can be disabled
|
|
|
|
using the command-line option @code{-mno-fused-madd}.
|
|
|
|
|
|
|
|
@node Paired-Single Built-in Functions
|
|
|
|
@subsubsection Paired-Single Built-in Functions
|
|
|
|
|
|
|
|
The following paired-single functions map directly to a particular
|
|
|
|
MIPS instruction. Please refer to the architecture specification
|
|
|
|
for details on what each instruction does.
|
|
|
|
|
|
|
|
@table @code
|
|
|
|
@item v2sf __builtin_mips_pll_ps (v2sf, v2sf)
|
|
|
|
Pair lower lower (@code{pll.ps}).
|
|
|
|
|
|
|
|
@item v2sf __builtin_mips_pul_ps (v2sf, v2sf)
|
|
|
|
Pair upper lower (@code{pul.ps}).
|
|
|
|
|
|
|
|
@item v2sf __builtin_mips_plu_ps (v2sf, v2sf)
|
|
|
|
Pair lower upper (@code{plu.ps}).
|
|
|
|
|
|
|
|
@item v2sf __builtin_mips_puu_ps (v2sf, v2sf)
|
|
|
|
Pair upper upper (@code{puu.ps}).
|
|
|
|
|
|
|
|
@item v2sf __builtin_mips_cvt_ps_s (float, float)
|
|
|
|
Convert pair to paired single (@code{cvt.ps.s}).
|
|
|
|
|
|
|
|
@item float __builtin_mips_cvt_s_pl (v2sf)
|
|
|
|
Convert pair lower to single (@code{cvt.s.pl}).
|
|
|
|
|
|
|
|
@item float __builtin_mips_cvt_s_pu (v2sf)
|
|
|
|
Convert pair upper to single (@code{cvt.s.pu}).
|
|
|
|
|
|
|
|
@item v2sf __builtin_mips_abs_ps (v2sf)
|
|
|
|
Absolute value (@code{abs.ps}).
|
|
|
|
|
|
|
|
@item v2sf __builtin_mips_alnv_ps (v2sf, v2sf, int)
|
|
|
|
Align variable (@code{alnv.ps}).
|
|
|
|
|
|
|
|
@emph{Note:} The value of the third parameter must be 0 or 4
|
|
|
|
modulo 8, otherwise the result will be unpredictable. Please read the
|
|
|
|
instruction description for details.
|
|
|
|
@end table
|
|
|
|
|
|
|
|
The following multi-instruction functions are also available.
|
|
|
|
In each case, @var{cond} can be any of the 16 floating-point conditions:
|
|
|
|
@code{f}, @code{un}, @code{eq}, @code{ueq}, @code{olt}, @code{ult},
|
|
|
|
@code{ole}, @code{ule}, @code{sf}, @code{ngle}, @code{seq}, @code{ngl},
|
|
|
|
@code{lt}, @code{nge}, @code{le} or @code{ngt}.
|
|
|
|
|
|
|
|
@table @code
|
|
|
|
@item v2sf __builtin_mips_movt_c_@var{cond}_ps (v2sf @var{a}, v2sf @var{b}, v2sf @var{c}, v2sf @var{d})
|
|
|
|
@itemx v2sf __builtin_mips_movf_c_@var{cond}_ps (v2sf @var{a}, v2sf @var{b}, v2sf @var{c}, v2sf @var{d})
|
|
|
|
Conditional move based on floating point comparison (@code{c.@var{cond}.ps},
|
|
|
|
@code{movt.ps}/@code{movf.ps}).
|
|
|
|
|
|
|
|
The @code{movt} functions return the value @var{x} computed by:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
c.@var{cond}.ps @var{cc},@var{a},@var{b}
|
|
|
|
mov.ps @var{x},@var{c}
|
|
|
|
movt.ps @var{x},@var{d},@var{cc}
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
The @code{movf} functions are similar but use @code{movf.ps} instead
|
|
|
|
of @code{movt.ps}.
|
|
|
|
|
|
|
|
@item int __builtin_mips_upper_c_@var{cond}_ps (v2sf @var{a}, v2sf @var{b})
|
|
|
|
@itemx int __builtin_mips_lower_c_@var{cond}_ps (v2sf @var{a}, v2sf @var{b})
|
|
|
|
Comparison of two paired-single values (@code{c.@var{cond}.ps},
|
|
|
|
@code{bc1t}/@code{bc1f}).
|
|
|
|
|
|
|
|
These functions compare @var{a} and @var{b} using @code{c.@var{cond}.ps}
|
|
|
|
and return either the upper or lower half of the result. For example:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
v2sf a, b;
|
|
|
|
if (__builtin_mips_upper_c_eq_ps (a, b))
|
|
|
|
upper_halves_are_equal ();
|
|
|
|
else
|
|
|
|
upper_halves_are_unequal ();
|
|
|
|
|
|
|
|
if (__builtin_mips_lower_c_eq_ps (a, b))
|
|
|
|
lower_halves_are_equal ();
|
|
|
|
else
|
|
|
|
lower_halves_are_unequal ();
|
|
|
|
@end smallexample
|
|
|
|
@end table
|
|
|
|
|
|
|
|
@node MIPS-3D Built-in Functions
|
|
|
|
@subsubsection MIPS-3D Built-in Functions
|
|
|
|
|
|
|
|
The MIPS-3D Application-Specific Extension (ASE) includes additional
|
|
|
|
paired-single instructions that are designed to improve the performance
|
|
|
|
of 3D graphics operations. Support for these instructions is controlled
|
|
|
|
by the @option{-mips3d} command-line option.
|
|
|
|
|
|
|
|
The functions listed below map directly to a particular MIPS-3D
|
|
|
|
instruction. Please refer to the architecture specification for
|
|
|
|
more details on what each instruction does.
|
|
|
|
|
|
|
|
@table @code
|
|
|
|
@item v2sf __builtin_mips_addr_ps (v2sf, v2sf)
|
|
|
|
Reduction add (@code{addr.ps}).
|
|
|
|
|
|
|
|
@item v2sf __builtin_mips_mulr_ps (v2sf, v2sf)
|
|
|
|
Reduction multiply (@code{mulr.ps}).
|
|
|
|
|
|
|
|
@item v2sf __builtin_mips_cvt_pw_ps (v2sf)
|
|
|
|
Convert paired single to paired word (@code{cvt.pw.ps}).
|
|
|
|
|
|
|
|
@item v2sf __builtin_mips_cvt_ps_pw (v2sf)
|
|
|
|
Convert paired word to paired single (@code{cvt.ps.pw}).
|
|
|
|
|
|
|
|
@item float __builtin_mips_recip1_s (float)
|
|
|
|
@itemx double __builtin_mips_recip1_d (double)
|
|
|
|
@itemx v2sf __builtin_mips_recip1_ps (v2sf)
|
|
|
|
Reduced precision reciprocal (sequence step 1) (@code{recip1.@var{fmt}}).
|
|
|
|
|
|
|
|
@item float __builtin_mips_recip2_s (float, float)
|
|
|
|
@itemx double __builtin_mips_recip2_d (double, double)
|
|
|
|
@itemx v2sf __builtin_mips_recip2_ps (v2sf, v2sf)
|
|
|
|
Reduced precision reciprocal (sequence step 2) (@code{recip2.@var{fmt}}).
|
|
|
|
|
|
|
|
@item float __builtin_mips_rsqrt1_s (float)
|
|
|
|
@itemx double __builtin_mips_rsqrt1_d (double)
|
|
|
|
@itemx v2sf __builtin_mips_rsqrt1_ps (v2sf)
|
|
|
|
Reduced precision reciprocal square root (sequence step 1)
|
|
|
|
(@code{rsqrt1.@var{fmt}}).
|
|
|
|
|
|
|
|
@item float __builtin_mips_rsqrt2_s (float, float)
|
|
|
|
@itemx double __builtin_mips_rsqrt2_d (double, double)
|
|
|
|
@itemx v2sf __builtin_mips_rsqrt2_ps (v2sf, v2sf)
|
|
|
|
Reduced precision reciprocal square root (sequence step 2)
|
|
|
|
(@code{rsqrt2.@var{fmt}}).
|
|
|
|
@end table
|
|
|
|
|
|
|
|
The following multi-instruction functions are also available.
|
|
|
|
In each case, @var{cond} can be any of the 16 floating-point conditions:
|
|
|
|
@code{f}, @code{un}, @code{eq}, @code{ueq}, @code{olt}, @code{ult},
|
|
|
|
@code{ole}, @code{ule}, @code{sf}, @code{ngle}, @code{seq},
|
|
|
|
@code{ngl}, @code{lt}, @code{nge}, @code{le} or @code{ngt}.
|
|
|
|
|
|
|
|
@table @code
|
|
|
|
@item int __builtin_mips_cabs_@var{cond}_s (float @var{a}, float @var{b})
|
|
|
|
@itemx int __builtin_mips_cabs_@var{cond}_d (double @var{a}, double @var{b})
|
|
|
|
Absolute comparison of two scalar values (@code{cabs.@var{cond}.@var{fmt}},
|
|
|
|
@code{bc1t}/@code{bc1f}).
|
|
|
|
|
|
|
|
These functions compare @var{a} and @var{b} using @code{cabs.@var{cond}.s}
|
|
|
|
or @code{cabs.@var{cond}.d} and return the result as a boolean value.
|
|
|
|
For example:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
float a, b;
|
|
|
|
if (__builtin_mips_cabs_eq_s (a, b))
|
|
|
|
true ();
|
|
|
|
else
|
|
|
|
false ();
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@item int __builtin_mips_upper_cabs_@var{cond}_ps (v2sf @var{a}, v2sf @var{b})
|
|
|
|
@itemx int __builtin_mips_lower_cabs_@var{cond}_ps (v2sf @var{a}, v2sf @var{b})
|
|
|
|
Absolute comparison of two paired-single values (@code{cabs.@var{cond}.ps},
|
|
|
|
@code{bc1t}/@code{bc1f}).
|
|
|
|
|
|
|
|
These functions compare @var{a} and @var{b} using @code{cabs.@var{cond}.ps}
|
|
|
|
and return either the upper or lower half of the result. For example:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
v2sf a, b;
|
|
|
|
if (__builtin_mips_upper_cabs_eq_ps (a, b))
|
|
|
|
upper_halves_are_equal ();
|
|
|
|
else
|
|
|
|
upper_halves_are_unequal ();
|
|
|
|
|
|
|
|
if (__builtin_mips_lower_cabs_eq_ps (a, b))
|
|
|
|
lower_halves_are_equal ();
|
|
|
|
else
|
|
|
|
lower_halves_are_unequal ();
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@item v2sf __builtin_mips_movt_cabs_@var{cond}_ps (v2sf @var{a}, v2sf @var{b}, v2sf @var{c}, v2sf @var{d})
|
|
|
|
@itemx v2sf __builtin_mips_movf_cabs_@var{cond}_ps (v2sf @var{a}, v2sf @var{b}, v2sf @var{c}, v2sf @var{d})
|
|
|
|
Conditional move based on absolute comparison (@code{cabs.@var{cond}.ps},
|
|
|
|
@code{movt.ps}/@code{movf.ps}).
|
|
|
|
|
|
|
|
The @code{movt} functions return the value @var{x} computed by:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
cabs.@var{cond}.ps @var{cc},@var{a},@var{b}
|
|
|
|
mov.ps @var{x},@var{c}
|
|
|
|
movt.ps @var{x},@var{d},@var{cc}
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
The @code{movf} functions are similar but use @code{movf.ps} instead
|
|
|
|
of @code{movt.ps}.
|
|
|
|
|
|
|
|
@item int __builtin_mips_any_c_@var{cond}_ps (v2sf @var{a}, v2sf @var{b})
|
|
|
|
@itemx int __builtin_mips_all_c_@var{cond}_ps (v2sf @var{a}, v2sf @var{b})
|
|
|
|
@itemx int __builtin_mips_any_cabs_@var{cond}_ps (v2sf @var{a}, v2sf @var{b})
|
|
|
|
@itemx int __builtin_mips_all_cabs_@var{cond}_ps (v2sf @var{a}, v2sf @var{b})
|
|
|
|
Comparison of two paired-single values
|
|
|
|
(@code{c.@var{cond}.ps}/@code{cabs.@var{cond}.ps},
|
|
|
|
@code{bc1any2t}/@code{bc1any2f}).
|
|
|
|
|
|
|
|
These functions compare @var{a} and @var{b} using @code{c.@var{cond}.ps}
|
|
|
|
or @code{cabs.@var{cond}.ps}. The @code{any} forms return true if either
|
|
|
|
result is true and the @code{all} forms return true if both results are true.
|
|
|
|
For example:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
v2sf a, b;
|
|
|
|
if (__builtin_mips_any_c_eq_ps (a, b))
|
|
|
|
one_is_true ();
|
|
|
|
else
|
|
|
|
both_are_false ();
|
|
|
|
|
|
|
|
if (__builtin_mips_all_c_eq_ps (a, b))
|
|
|
|
both_are_true ();
|
|
|
|
else
|
|
|
|
one_is_false ();
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
@item int __builtin_mips_any_c_@var{cond}_4s (v2sf @var{a}, v2sf @var{b}, v2sf @var{c}, v2sf @var{d})
|
|
|
|
@itemx int __builtin_mips_all_c_@var{cond}_4s (v2sf @var{a}, v2sf @var{b}, v2sf @var{c}, v2sf @var{d})
|
|
|
|
@itemx int __builtin_mips_any_cabs_@var{cond}_4s (v2sf @var{a}, v2sf @var{b}, v2sf @var{c}, v2sf @var{d})
|
|
|
|
@itemx int __builtin_mips_all_cabs_@var{cond}_4s (v2sf @var{a}, v2sf @var{b}, v2sf @var{c}, v2sf @var{d})
|
|
|
|
Comparison of four paired-single values
|
|
|
|
(@code{c.@var{cond}.ps}/@code{cabs.@var{cond}.ps},
|
|
|
|
@code{bc1any4t}/@code{bc1any4f}).
|
|
|
|
|
|
|
|
These functions use @code{c.@var{cond}.ps} or @code{cabs.@var{cond}.ps}
|
|
|
|
to compare @var{a} with @var{b} and to compare @var{c} with @var{d}.
|
|
|
|
The @code{any} forms return true if any of the four results are true
|
|
|
|
and the @code{all} forms return true if all four results are true.
|
|
|
|
For example:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
v2sf a, b, c, d;
|
|
|
|
if (__builtin_mips_any_c_eq_4s (a, b, c, d))
|
|
|
|
some_are_true ();
|
|
|
|
else
|
|
|
|
all_are_false ();
|
|
|
|
|
|
|
|
if (__builtin_mips_all_c_eq_4s (a, b, c, d))
|
|
|
|
all_are_true ();
|
|
|
|
else
|
|
|
|
some_are_false ();
|
|
|
|
@end smallexample
|
|
|
|
@end table
|
|
|
|
|
2002-01-23 03:10:39 +01:00
|
|
|
@node PowerPC AltiVec Built-in Functions
|
|
|
|
@subsection PowerPC AltiVec Built-in Functions
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
GCC provides an interface for the PowerPC family of processors to access
|
|
|
|
the AltiVec operations described in Motorola's AltiVec Programming
|
|
|
|
Interface Manual. The interface is made available by including
|
|
|
|
@code{<altivec.h>} and using @option{-maltivec} and
|
|
|
|
@option{-mabi=altivec}. The interface supports the following vector
|
|
|
|
types.
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
@smallexample
|
|
|
|
vector unsigned char
|
|
|
|
vector signed char
|
|
|
|
vector bool char
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned short
|
|
|
|
vector signed short
|
|
|
|
vector bool short
|
|
|
|
vector pixel
|
|
|
|
|
|
|
|
vector unsigned int
|
|
|
|
vector signed int
|
|
|
|
vector bool int
|
|
|
|
vector float
|
|
|
|
@end smallexample
|
|
|
|
|
|
|
|
GCC's implementation of the high-level language interface available from
|
|
|
|
C and C++ code differs from Motorola's documentation in several ways.
|
|
|
|
|
|
|
|
@itemize @bullet
|
|
|
|
|
|
|
|
@item
|
|
|
|
A vector constant is a list of constant expressions within curly braces.
|
|
|
|
|
|
|
|
@item
|
|
|
|
A vector initializer requires no cast if the vector constant is of the
|
|
|
|
same type as the variable it is initializing.
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
@item
|
2004-12-03 18:37:12 +01:00
|
|
|
If @code{signed} or @code{unsigned} is omitted, the signedness of the
|
|
|
|
vector type is the default signedness of the base type. The default
|
|
|
|
varies depending on the operating system, so a portable program should
|
|
|
|
always specify the signedness.
|
2004-08-16 19:03:29 +02:00
|
|
|
|
|
|
|
@item
|
|
|
|
Compiling with @option{-maltivec} adds keywords @code{__vector},
|
|
|
|
@code{__pixel}, and @code{__bool}. Macros @option{vector},
|
|
|
|
@code{pixel}, and @code{bool} are defined in @code{<altivec.h>} and can
|
|
|
|
be undefined.
|
|
|
|
|
|
|
|
@item
|
|
|
|
GCC allows using a @code{typedef} name as the type specifier for a
|
|
|
|
vector type.
|
2004-08-12 23:19:08 +02:00
|
|
|
|
|
|
|
@item
|
|
|
|
For C, overloaded functions are implemented with macros so the following
|
|
|
|
does not work:
|
2002-06-25 23:29:41 +02:00
|
|
|
|
|
|
|
@smallexample
|
2002-06-26 01:41:25 +02:00
|
|
|
vec_add ((vector signed int)@{1, 2, 3, 4@}, foo);
|
2002-06-25 23:29:41 +02:00
|
|
|
@end smallexample
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
Since @code{vec_add} is a macro, the vector constant in the example
|
|
|
|
is treated as four separate arguments. Wrap the entire argument in
|
|
|
|
parentheses for this to work.
|
|
|
|
@end itemize
|
2002-06-25 23:29:41 +02:00
|
|
|
|
2002-02-04 23:50:56 +01:00
|
|
|
@emph{Note:} Only the @code{<altivec.h>} interface is supported.
|
|
|
|
Internally, GCC uses built-in functions to achieve the functionality in
|
|
|
|
the aforementioned header file, but they are not supported and are
|
|
|
|
subject to change without notice.
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
The following interfaces are supported for the generic and specific
|
|
|
|
AltiVec operations and the AltiVec predicates. In cases where there
|
|
|
|
is a direct mapping between generic and specific operations, only the
|
|
|
|
generic names are shown here, although the specific operations can also
|
|
|
|
be used.
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
Arguments that are documented as @code{const int} require literal
|
|
|
|
integral values within the range required for that operation.
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
@smallexample
|
|
|
|
vector signed char vec_abs (vector signed char);
|
|
|
|
vector signed short vec_abs (vector signed short);
|
|
|
|
vector signed int vec_abs (vector signed int);
|
|
|
|
vector float vec_abs (vector float);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed char vec_abss (vector signed char);
|
|
|
|
vector signed short vec_abss (vector signed short);
|
|
|
|
vector signed int vec_abss (vector signed int);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed char vec_add (vector bool char, vector signed char);
|
|
|
|
vector signed char vec_add (vector signed char, vector bool char);
|
|
|
|
vector signed char vec_add (vector signed char, vector signed char);
|
|
|
|
vector unsigned char vec_add (vector bool char, vector unsigned char);
|
|
|
|
vector unsigned char vec_add (vector unsigned char, vector bool char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_add (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed short vec_add (vector bool short, vector signed short);
|
|
|
|
vector signed short vec_add (vector signed short, vector bool short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed short vec_add (vector signed short, vector signed short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned short vec_add (vector bool short,
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short);
|
|
|
|
vector unsigned short vec_add (vector unsigned short,
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short);
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned short vec_add (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_add (vector bool int, vector signed int);
|
|
|
|
vector signed int vec_add (vector signed int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_add (vector signed int, vector signed int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned int vec_add (vector bool int, vector unsigned int);
|
|
|
|
vector unsigned int vec_add (vector unsigned int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector unsigned int vec_add (vector unsigned int, vector unsigned int);
|
|
|
|
vector float vec_add (vector float, vector float);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector float vec_vaddfp (vector float, vector float);
|
|
|
|
|
|
|
|
vector signed int vec_vadduwm (vector bool int, vector signed int);
|
|
|
|
vector signed int vec_vadduwm (vector signed int, vector bool int);
|
|
|
|
vector signed int vec_vadduwm (vector signed int, vector signed int);
|
|
|
|
vector unsigned int vec_vadduwm (vector bool int, vector unsigned int);
|
|
|
|
vector unsigned int vec_vadduwm (vector unsigned int, vector bool int);
|
|
|
|
vector unsigned int vec_vadduwm (vector unsigned int,
|
|
|
|
vector unsigned int);
|
|
|
|
|
|
|
|
vector signed short vec_vadduhm (vector bool short,
|
|
|
|
vector signed short);
|
|
|
|
vector signed short vec_vadduhm (vector signed short,
|
|
|
|
vector bool short);
|
|
|
|
vector signed short vec_vadduhm (vector signed short,
|
|
|
|
vector signed short);
|
|
|
|
vector unsigned short vec_vadduhm (vector bool short,
|
|
|
|
vector unsigned short);
|
|
|
|
vector unsigned short vec_vadduhm (vector unsigned short,
|
|
|
|
vector bool short);
|
|
|
|
vector unsigned short vec_vadduhm (vector unsigned short,
|
|
|
|
vector unsigned short);
|
|
|
|
|
|
|
|
vector signed char vec_vaddubm (vector bool char, vector signed char);
|
|
|
|
vector signed char vec_vaddubm (vector signed char, vector bool char);
|
|
|
|
vector signed char vec_vaddubm (vector signed char, vector signed char);
|
|
|
|
vector unsigned char vec_vaddubm (vector bool char,
|
|
|
|
vector unsigned char);
|
|
|
|
vector unsigned char vec_vaddubm (vector unsigned char,
|
|
|
|
vector bool char);
|
|
|
|
vector unsigned char vec_vaddubm (vector unsigned char,
|
|
|
|
vector unsigned char);
|
|
|
|
|
2002-01-23 03:10:39 +01:00
|
|
|
vector unsigned int vec_addc (vector unsigned int, vector unsigned int);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned char vec_adds (vector bool char, vector unsigned char);
|
|
|
|
vector unsigned char vec_adds (vector unsigned char, vector bool char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_adds (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed char vec_adds (vector bool char, vector signed char);
|
|
|
|
vector signed char vec_adds (vector signed char, vector bool char);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed char vec_adds (vector signed char, vector signed char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned short vec_adds (vector bool short,
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short);
|
|
|
|
vector unsigned short vec_adds (vector unsigned short,
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short);
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned short vec_adds (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed short vec_adds (vector bool short, vector signed short);
|
|
|
|
vector signed short vec_adds (vector signed short, vector bool short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed short vec_adds (vector signed short, vector signed short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned int vec_adds (vector bool int, vector unsigned int);
|
|
|
|
vector unsigned int vec_adds (vector unsigned int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector unsigned int vec_adds (vector unsigned int, vector unsigned int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_adds (vector bool int, vector signed int);
|
|
|
|
vector signed int vec_adds (vector signed int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_adds (vector signed int, vector signed int);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_vaddsws (vector bool int, vector signed int);
|
|
|
|
vector signed int vec_vaddsws (vector signed int, vector bool int);
|
|
|
|
vector signed int vec_vaddsws (vector signed int, vector signed int);
|
|
|
|
|
|
|
|
vector unsigned int vec_vadduws (vector bool int, vector unsigned int);
|
|
|
|
vector unsigned int vec_vadduws (vector unsigned int, vector bool int);
|
|
|
|
vector unsigned int vec_vadduws (vector unsigned int,
|
|
|
|
vector unsigned int);
|
|
|
|
|
|
|
|
vector signed short vec_vaddshs (vector bool short,
|
|
|
|
vector signed short);
|
|
|
|
vector signed short vec_vaddshs (vector signed short,
|
|
|
|
vector bool short);
|
|
|
|
vector signed short vec_vaddshs (vector signed short,
|
|
|
|
vector signed short);
|
|
|
|
|
|
|
|
vector unsigned short vec_vadduhs (vector bool short,
|
|
|
|
vector unsigned short);
|
|
|
|
vector unsigned short vec_vadduhs (vector unsigned short,
|
|
|
|
vector bool short);
|
|
|
|
vector unsigned short vec_vadduhs (vector unsigned short,
|
|
|
|
vector unsigned short);
|
|
|
|
|
|
|
|
vector signed char vec_vaddsbs (vector bool char, vector signed char);
|
|
|
|
vector signed char vec_vaddsbs (vector signed char, vector bool char);
|
|
|
|
vector signed char vec_vaddsbs (vector signed char, vector signed char);
|
|
|
|
|
|
|
|
vector unsigned char vec_vaddubs (vector bool char,
|
|
|
|
vector unsigned char);
|
|
|
|
vector unsigned char vec_vaddubs (vector unsigned char,
|
|
|
|
vector bool char);
|
|
|
|
vector unsigned char vec_vaddubs (vector unsigned char,
|
|
|
|
vector unsigned char);
|
|
|
|
|
2002-01-23 03:10:39 +01:00
|
|
|
vector float vec_and (vector float, vector float);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector float vec_and (vector float, vector bool int);
|
|
|
|
vector float vec_and (vector bool int, vector float);
|
|
|
|
vector bool int vec_and (vector bool int, vector bool int);
|
|
|
|
vector signed int vec_and (vector bool int, vector signed int);
|
|
|
|
vector signed int vec_and (vector signed int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_and (vector signed int, vector signed int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned int vec_and (vector bool int, vector unsigned int);
|
|
|
|
vector unsigned int vec_and (vector unsigned int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector unsigned int vec_and (vector unsigned int, vector unsigned int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short vec_and (vector bool short, vector bool short);
|
|
|
|
vector signed short vec_and (vector bool short, vector signed short);
|
|
|
|
vector signed short vec_and (vector signed short, vector bool short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed short vec_and (vector signed short, vector signed short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned short vec_and (vector bool short,
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short);
|
|
|
|
vector unsigned short vec_and (vector unsigned short,
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short);
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned short vec_and (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed char vec_and (vector bool char, vector signed char);
|
|
|
|
vector bool char vec_and (vector bool char, vector bool char);
|
|
|
|
vector signed char vec_and (vector signed char, vector bool char);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed char vec_and (vector signed char, vector signed char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned char vec_and (vector bool char, vector unsigned char);
|
|
|
|
vector unsigned char vec_and (vector unsigned char, vector bool char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_and (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
|
|
|
vector float vec_andc (vector float, vector float);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector float vec_andc (vector float, vector bool int);
|
|
|
|
vector float vec_andc (vector bool int, vector float);
|
|
|
|
vector bool int vec_andc (vector bool int, vector bool int);
|
|
|
|
vector signed int vec_andc (vector bool int, vector signed int);
|
|
|
|
vector signed int vec_andc (vector signed int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_andc (vector signed int, vector signed int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned int vec_andc (vector bool int, vector unsigned int);
|
|
|
|
vector unsigned int vec_andc (vector unsigned int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector unsigned int vec_andc (vector unsigned int, vector unsigned int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short vec_andc (vector bool short, vector bool short);
|
|
|
|
vector signed short vec_andc (vector bool short, vector signed short);
|
|
|
|
vector signed short vec_andc (vector signed short, vector bool short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed short vec_andc (vector signed short, vector signed short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned short vec_andc (vector bool short,
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short);
|
|
|
|
vector unsigned short vec_andc (vector unsigned short,
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short);
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned short vec_andc (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed char vec_andc (vector bool char, vector signed char);
|
|
|
|
vector bool char vec_andc (vector bool char, vector bool char);
|
|
|
|
vector signed char vec_andc (vector signed char, vector bool char);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed char vec_andc (vector signed char, vector signed char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned char vec_andc (vector bool char, vector unsigned char);
|
|
|
|
vector unsigned char vec_andc (vector unsigned char, vector bool char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_andc (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_avg (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed char vec_avg (vector signed char, vector signed char);
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned short vec_avg (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed short vec_avg (vector signed short, vector signed short);
|
|
|
|
vector unsigned int vec_avg (vector unsigned int, vector unsigned int);
|
|
|
|
vector signed int vec_avg (vector signed int, vector signed int);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_vavgsw (vector signed int, vector signed int);
|
|
|
|
|
|
|
|
vector unsigned int vec_vavguw (vector unsigned int,
|
|
|
|
vector unsigned int);
|
|
|
|
|
|
|
|
vector signed short vec_vavgsh (vector signed short,
|
|
|
|
vector signed short);
|
|
|
|
|
|
|
|
vector unsigned short vec_vavguh (vector unsigned short,
|
|
|
|
vector unsigned short);
|
|
|
|
|
|
|
|
vector signed char vec_vavgsb (vector signed char, vector signed char);
|
|
|
|
|
|
|
|
vector unsigned char vec_vavgub (vector unsigned char,
|
|
|
|
vector unsigned char);
|
|
|
|
|
2002-01-23 03:10:39 +01:00
|
|
|
vector float vec_ceil (vector float);
|
|
|
|
|
|
|
|
vector signed int vec_cmpb (vector float, vector float);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool char vec_cmpeq (vector signed char, vector signed char);
|
|
|
|
vector bool char vec_cmpeq (vector unsigned char, vector unsigned char);
|
|
|
|
vector bool short vec_cmpeq (vector signed short, vector signed short);
|
|
|
|
vector bool short vec_cmpeq (vector unsigned short,
|
|
|
|
vector unsigned short);
|
|
|
|
vector bool int vec_cmpeq (vector signed int, vector signed int);
|
|
|
|
vector bool int vec_cmpeq (vector unsigned int, vector unsigned int);
|
|
|
|
vector bool int vec_cmpeq (vector float, vector float);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool int vec_vcmpeqfp (vector float, vector float);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool int vec_vcmpequw (vector signed int, vector signed int);
|
|
|
|
vector bool int vec_vcmpequw (vector unsigned int, vector unsigned int);
|
|
|
|
|
|
|
|
vector bool short vec_vcmpequh (vector signed short,
|
|
|
|
vector signed short);
|
|
|
|
vector bool short vec_vcmpequh (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool char vec_vcmpequb (vector signed char, vector signed char);
|
|
|
|
vector bool char vec_vcmpequb (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool int vec_cmpge (vector float, vector float);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool char vec_cmpgt (vector unsigned char, vector unsigned char);
|
|
|
|
vector bool char vec_cmpgt (vector signed char, vector signed char);
|
|
|
|
vector bool short vec_cmpgt (vector unsigned short,
|
|
|
|
vector unsigned short);
|
|
|
|
vector bool short vec_cmpgt (vector signed short, vector signed short);
|
|
|
|
vector bool int vec_cmpgt (vector unsigned int, vector unsigned int);
|
|
|
|
vector bool int vec_cmpgt (vector signed int, vector signed int);
|
|
|
|
vector bool int vec_cmpgt (vector float, vector float);
|
|
|
|
|
|
|
|
vector bool int vec_vcmpgtfp (vector float, vector float);
|
|
|
|
|
|
|
|
vector bool int vec_vcmpgtsw (vector signed int, vector signed int);
|
|
|
|
|
|
|
|
vector bool int vec_vcmpgtuw (vector unsigned int, vector unsigned int);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short vec_vcmpgtsh (vector signed short,
|
|
|
|
vector signed short);
|
|
|
|
|
|
|
|
vector bool short vec_vcmpgtuh (vector unsigned short,
|
|
|
|
vector unsigned short);
|
|
|
|
|
|
|
|
vector bool char vec_vcmpgtsb (vector signed char, vector signed char);
|
|
|
|
|
|
|
|
vector bool char vec_vcmpgtub (vector unsigned char,
|
|
|
|
vector unsigned char);
|
|
|
|
|
|
|
|
vector bool int vec_cmple (vector float, vector float);
|
|
|
|
|
|
|
|
vector bool char vec_cmplt (vector unsigned char, vector unsigned char);
|
|
|
|
vector bool char vec_cmplt (vector signed char, vector signed char);
|
|
|
|
vector bool short vec_cmplt (vector unsigned short,
|
|
|
|
vector unsigned short);
|
|
|
|
vector bool short vec_cmplt (vector signed short, vector signed short);
|
|
|
|
vector bool int vec_cmplt (vector unsigned int, vector unsigned int);
|
|
|
|
vector bool int vec_cmplt (vector signed int, vector signed int);
|
|
|
|
vector bool int vec_cmplt (vector float, vector float);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector float vec_ctf (vector unsigned int, const int);
|
|
|
|
vector float vec_ctf (vector signed int, const int);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector float vec_vcfsx (vector signed int, const int);
|
|
|
|
|
|
|
|
vector float vec_vcfux (vector unsigned int, const int);
|
|
|
|
|
|
|
|
vector signed int vec_cts (vector float, const int);
|
|
|
|
|
|
|
|
vector unsigned int vec_ctu (vector float, const int);
|
|
|
|
|
|
|
|
void vec_dss (const int);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
|
|
|
void vec_dssall (void);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
void vec_dst (const vector unsigned char *, int, const int);
|
|
|
|
void vec_dst (const vector signed char *, int, const int);
|
|
|
|
void vec_dst (const vector bool char *, int, const int);
|
|
|
|
void vec_dst (const vector unsigned short *, int, const int);
|
|
|
|
void vec_dst (const vector signed short *, int, const int);
|
|
|
|
void vec_dst (const vector bool short *, int, const int);
|
|
|
|
void vec_dst (const vector pixel *, int, const int);
|
|
|
|
void vec_dst (const vector unsigned int *, int, const int);
|
|
|
|
void vec_dst (const vector signed int *, int, const int);
|
|
|
|
void vec_dst (const vector bool int *, int, const int);
|
|
|
|
void vec_dst (const vector float *, int, const int);
|
|
|
|
void vec_dst (const unsigned char *, int, const int);
|
|
|
|
void vec_dst (const signed char *, int, const int);
|
|
|
|
void vec_dst (const unsigned short *, int, const int);
|
|
|
|
void vec_dst (const short *, int, const int);
|
|
|
|
void vec_dst (const unsigned int *, int, const int);
|
|
|
|
void vec_dst (const int *, int, const int);
|
|
|
|
void vec_dst (const unsigned long *, int, const int);
|
|
|
|
void vec_dst (const long *, int, const int);
|
|
|
|
void vec_dst (const float *, int, const int);
|
|
|
|
|
|
|
|
void vec_dstst (const vector unsigned char *, int, const int);
|
|
|
|
void vec_dstst (const vector signed char *, int, const int);
|
|
|
|
void vec_dstst (const vector bool char *, int, const int);
|
|
|
|
void vec_dstst (const vector unsigned short *, int, const int);
|
|
|
|
void vec_dstst (const vector signed short *, int, const int);
|
|
|
|
void vec_dstst (const vector bool short *, int, const int);
|
|
|
|
void vec_dstst (const vector pixel *, int, const int);
|
|
|
|
void vec_dstst (const vector unsigned int *, int, const int);
|
|
|
|
void vec_dstst (const vector signed int *, int, const int);
|
|
|
|
void vec_dstst (const vector bool int *, int, const int);
|
|
|
|
void vec_dstst (const vector float *, int, const int);
|
|
|
|
void vec_dstst (const unsigned char *, int, const int);
|
|
|
|
void vec_dstst (const signed char *, int, const int);
|
|
|
|
void vec_dstst (const unsigned short *, int, const int);
|
|
|
|
void vec_dstst (const short *, int, const int);
|
|
|
|
void vec_dstst (const unsigned int *, int, const int);
|
|
|
|
void vec_dstst (const int *, int, const int);
|
|
|
|
void vec_dstst (const unsigned long *, int, const int);
|
|
|
|
void vec_dstst (const long *, int, const int);
|
|
|
|
void vec_dstst (const float *, int, const int);
|
|
|
|
|
|
|
|
void vec_dststt (const vector unsigned char *, int, const int);
|
|
|
|
void vec_dststt (const vector signed char *, int, const int);
|
|
|
|
void vec_dststt (const vector bool char *, int, const int);
|
|
|
|
void vec_dststt (const vector unsigned short *, int, const int);
|
|
|
|
void vec_dststt (const vector signed short *, int, const int);
|
|
|
|
void vec_dststt (const vector bool short *, int, const int);
|
|
|
|
void vec_dststt (const vector pixel *, int, const int);
|
|
|
|
void vec_dststt (const vector unsigned int *, int, const int);
|
|
|
|
void vec_dststt (const vector signed int *, int, const int);
|
|
|
|
void vec_dststt (const vector bool int *, int, const int);
|
|
|
|
void vec_dststt (const vector float *, int, const int);
|
|
|
|
void vec_dststt (const unsigned char *, int, const int);
|
|
|
|
void vec_dststt (const signed char *, int, const int);
|
|
|
|
void vec_dststt (const unsigned short *, int, const int);
|
|
|
|
void vec_dststt (const short *, int, const int);
|
|
|
|
void vec_dststt (const unsigned int *, int, const int);
|
|
|
|
void vec_dststt (const int *, int, const int);
|
|
|
|
void vec_dststt (const unsigned long *, int, const int);
|
|
|
|
void vec_dststt (const long *, int, const int);
|
|
|
|
void vec_dststt (const float *, int, const int);
|
|
|
|
|
|
|
|
void vec_dstt (const vector unsigned char *, int, const int);
|
|
|
|
void vec_dstt (const vector signed char *, int, const int);
|
|
|
|
void vec_dstt (const vector bool char *, int, const int);
|
|
|
|
void vec_dstt (const vector unsigned short *, int, const int);
|
|
|
|
void vec_dstt (const vector signed short *, int, const int);
|
|
|
|
void vec_dstt (const vector bool short *, int, const int);
|
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void vec_dstt (const vector pixel *, int, const int);
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void vec_dstt (const vector unsigned int *, int, const int);
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void vec_dstt (const vector signed int *, int, const int);
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void vec_dstt (const vector bool int *, int, const int);
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void vec_dstt (const vector float *, int, const int);
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void vec_dstt (const unsigned char *, int, const int);
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void vec_dstt (const signed char *, int, const int);
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void vec_dstt (const unsigned short *, int, const int);
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void vec_dstt (const short *, int, const int);
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void vec_dstt (const unsigned int *, int, const int);
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void vec_dstt (const int *, int, const int);
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void vec_dstt (const unsigned long *, int, const int);
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void vec_dstt (const long *, int, const int);
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void vec_dstt (const float *, int, const int);
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vector float vec_expte (vector float);
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vector float vec_floor (vector float);
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vector float vec_ld (int, const vector float *);
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vector float vec_ld (int, const float *);
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vector bool int vec_ld (int, const vector bool int *);
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vector signed int vec_ld (int, const vector signed int *);
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vector signed int vec_ld (int, const int *);
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vector signed int vec_ld (int, const long *);
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vector unsigned int vec_ld (int, const vector unsigned int *);
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vector unsigned int vec_ld (int, const unsigned int *);
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vector unsigned int vec_ld (int, const unsigned long *);
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vector bool short vec_ld (int, const vector bool short *);
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vector pixel vec_ld (int, const vector pixel *);
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vector signed short vec_ld (int, const vector signed short *);
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vector signed short vec_ld (int, const short *);
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vector unsigned short vec_ld (int, const vector unsigned short *);
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vector unsigned short vec_ld (int, const unsigned short *);
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vector bool char vec_ld (int, const vector bool char *);
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vector signed char vec_ld (int, const vector signed char *);
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vector signed char vec_ld (int, const signed char *);
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vector unsigned char vec_ld (int, const vector unsigned char *);
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vector unsigned char vec_ld (int, const unsigned char *);
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vector signed char vec_lde (int, const signed char *);
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vector unsigned char vec_lde (int, const unsigned char *);
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vector signed short vec_lde (int, const short *);
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vector unsigned short vec_lde (int, const unsigned short *);
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vector float vec_lde (int, const float *);
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vector signed int vec_lde (int, const int *);
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vector unsigned int vec_lde (int, const unsigned int *);
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vector signed int vec_lde (int, const long *);
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vector unsigned int vec_lde (int, const unsigned long *);
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vector float vec_lvewx (int, float *);
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vector signed int vec_lvewx (int, int *);
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vector unsigned int vec_lvewx (int, unsigned int *);
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vector signed int vec_lvewx (int, long *);
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vector unsigned int vec_lvewx (int, unsigned long *);
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vector signed short vec_lvehx (int, short *);
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vector unsigned short vec_lvehx (int, unsigned short *);
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vector signed char vec_lvebx (int, char *);
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vector unsigned char vec_lvebx (int, unsigned char *);
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vector float vec_ldl (int, const vector float *);
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vector float vec_ldl (int, const float *);
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vector bool int vec_ldl (int, const vector bool int *);
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vector signed int vec_ldl (int, const vector signed int *);
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vector signed int vec_ldl (int, const int *);
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vector signed int vec_ldl (int, const long *);
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vector unsigned int vec_ldl (int, const vector unsigned int *);
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vector unsigned int vec_ldl (int, const unsigned int *);
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vector unsigned int vec_ldl (int, const unsigned long *);
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vector bool short vec_ldl (int, const vector bool short *);
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vector pixel vec_ldl (int, const vector pixel *);
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vector signed short vec_ldl (int, const vector signed short *);
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vector signed short vec_ldl (int, const short *);
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vector unsigned short vec_ldl (int, const vector unsigned short *);
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vector unsigned short vec_ldl (int, const unsigned short *);
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vector bool char vec_ldl (int, const vector bool char *);
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vector signed char vec_ldl (int, const vector signed char *);
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vector signed char vec_ldl (int, const signed char *);
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vector unsigned char vec_ldl (int, const vector unsigned char *);
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vector unsigned char vec_ldl (int, const unsigned char *);
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2002-01-23 03:10:39 +01:00
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vector float vec_loge (vector float);
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2004-08-12 23:19:08 +02:00
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vector unsigned char vec_lvsl (int, const volatile unsigned char *);
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vector unsigned char vec_lvsl (int, const volatile signed char *);
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vector unsigned char vec_lvsl (int, const volatile unsigned short *);
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vector unsigned char vec_lvsl (int, const volatile short *);
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vector unsigned char vec_lvsl (int, const volatile unsigned int *);
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vector unsigned char vec_lvsl (int, const volatile int *);
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vector unsigned char vec_lvsl (int, const volatile unsigned long *);
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vector unsigned char vec_lvsl (int, const volatile long *);
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vector unsigned char vec_lvsl (int, const volatile float *);
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vector unsigned char vec_lvsr (int, const volatile unsigned char *);
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vector unsigned char vec_lvsr (int, const volatile signed char *);
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vector unsigned char vec_lvsr (int, const volatile unsigned short *);
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vector unsigned char vec_lvsr (int, const volatile short *);
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vector unsigned char vec_lvsr (int, const volatile unsigned int *);
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vector unsigned char vec_lvsr (int, const volatile int *);
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vector unsigned char vec_lvsr (int, const volatile unsigned long *);
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vector unsigned char vec_lvsr (int, const volatile long *);
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vector unsigned char vec_lvsr (int, const volatile float *);
|
2002-01-23 03:10:39 +01:00
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vector float vec_madd (vector float, vector float, vector float);
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2004-08-12 23:19:08 +02:00
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vector signed short vec_madds (vector signed short,
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vector signed short,
|
2002-02-20 19:11:53 +01:00
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|
vector signed short);
|
2002-01-23 03:10:39 +01:00
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|
2004-08-12 23:19:08 +02:00
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vector unsigned char vec_max (vector bool char, vector unsigned char);
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vector unsigned char vec_max (vector unsigned char, vector bool char);
|
2002-02-21 22:22:09 +01:00
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vector unsigned char vec_max (vector unsigned char,
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vector unsigned char);
|
2004-08-12 23:19:08 +02:00
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vector signed char vec_max (vector bool char, vector signed char);
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vector signed char vec_max (vector signed char, vector bool char);
|
2002-01-23 03:10:39 +01:00
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vector signed char vec_max (vector signed char, vector signed char);
|
2004-08-12 23:19:08 +02:00
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vector unsigned short vec_max (vector bool short,
|
2002-02-21 22:22:09 +01:00
|
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|
vector unsigned short);
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vector unsigned short vec_max (vector unsigned short,
|
2004-08-12 23:19:08 +02:00
|
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|
vector bool short);
|
2002-02-20 19:11:53 +01:00
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vector unsigned short vec_max (vector unsigned short,
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|
|
vector unsigned short);
|
2004-08-12 23:19:08 +02:00
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vector signed short vec_max (vector bool short, vector signed short);
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vector signed short vec_max (vector signed short, vector bool short);
|
2002-01-23 03:10:39 +01:00
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vector signed short vec_max (vector signed short, vector signed short);
|
2004-08-12 23:19:08 +02:00
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vector unsigned int vec_max (vector bool int, vector unsigned int);
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vector unsigned int vec_max (vector unsigned int, vector bool int);
|
2002-01-23 03:10:39 +01:00
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vector unsigned int vec_max (vector unsigned int, vector unsigned int);
|
2004-08-12 23:19:08 +02:00
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vector signed int vec_max (vector bool int, vector signed int);
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vector signed int vec_max (vector signed int, vector bool int);
|
2002-01-23 03:10:39 +01:00
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vector signed int vec_max (vector signed int, vector signed int);
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vector float vec_max (vector float, vector float);
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2004-08-12 23:19:08 +02:00
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vector float vec_vmaxfp (vector float, vector float);
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vector signed int vec_vmaxsw (vector bool int, vector signed int);
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vector signed int vec_vmaxsw (vector signed int, vector bool int);
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vector signed int vec_vmaxsw (vector signed int, vector signed int);
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vector unsigned int vec_vmaxuw (vector bool int, vector unsigned int);
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vector unsigned int vec_vmaxuw (vector unsigned int, vector bool int);
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vector unsigned int vec_vmaxuw (vector unsigned int,
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|
vector unsigned int);
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vector signed short vec_vmaxsh (vector bool short, vector signed short);
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vector signed short vec_vmaxsh (vector signed short, vector bool short);
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vector signed short vec_vmaxsh (vector signed short,
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|
vector signed short);
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vector unsigned short vec_vmaxuh (vector bool short,
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|
vector unsigned short);
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vector unsigned short vec_vmaxuh (vector unsigned short,
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|
vector bool short);
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vector unsigned short vec_vmaxuh (vector unsigned short,
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|
vector unsigned short);
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vector signed char vec_vmaxsb (vector bool char, vector signed char);
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vector signed char vec_vmaxsb (vector signed char, vector bool char);
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vector signed char vec_vmaxsb (vector signed char, vector signed char);
|
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vector unsigned char vec_vmaxub (vector bool char,
|
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|
|
vector unsigned char);
|
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vector unsigned char vec_vmaxub (vector unsigned char,
|
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|
|
vector bool char);
|
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vector unsigned char vec_vmaxub (vector unsigned char,
|
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|
|
vector unsigned char);
|
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vector bool char vec_mergeh (vector bool char, vector bool char);
|
2002-01-23 03:10:39 +01:00
|
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|
vector signed char vec_mergeh (vector signed char, vector signed char);
|
2002-02-20 19:11:53 +01:00
|
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|
vector unsigned char vec_mergeh (vector unsigned char,
|
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|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
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|
vector bool short vec_mergeh (vector bool short, vector bool short);
|
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|
vector pixel vec_mergeh (vector pixel, vector pixel);
|
2002-02-21 22:22:09 +01:00
|
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|
vector signed short vec_mergeh (vector signed short,
|
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|
|
vector signed short);
|
2002-02-20 19:11:53 +01:00
|
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|
vector unsigned short vec_mergeh (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector float vec_mergeh (vector float, vector float);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool int vec_mergeh (vector bool int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_mergeh (vector signed int, vector signed int);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned int vec_mergeh (vector unsigned int,
|
|
|
|
vector unsigned int);
|
2002-01-23 03:10:39 +01:00
|
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|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector float vec_vmrghw (vector float, vector float);
|
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|
vector bool int vec_vmrghw (vector bool int, vector bool int);
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|
vector signed int vec_vmrghw (vector signed int, vector signed int);
|
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|
vector unsigned int vec_vmrghw (vector unsigned int,
|
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|
|
vector unsigned int);
|
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vector bool short vec_vmrghh (vector bool short, vector bool short);
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vector signed short vec_vmrghh (vector signed short,
|
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|
|
vector signed short);
|
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|
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vector unsigned short vec_vmrghh (vector unsigned short,
|
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|
|
vector unsigned short);
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vector pixel vec_vmrghh (vector pixel, vector pixel);
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vector bool char vec_vmrghb (vector bool char, vector bool char);
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|
vector signed char vec_vmrghb (vector signed char, vector signed char);
|
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vector unsigned char vec_vmrghb (vector unsigned char,
|
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|
|
vector unsigned char);
|
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|
|
vector bool char vec_mergel (vector bool char, vector bool char);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed char vec_mergel (vector signed char, vector signed char);
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned char vec_mergel (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short vec_mergel (vector bool short, vector bool short);
|
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|
|
vector pixel vec_mergel (vector pixel, vector pixel);
|
2002-02-21 22:22:09 +01:00
|
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|
vector signed short vec_mergel (vector signed short,
|
|
|
|
vector signed short);
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned short vec_mergel (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector float vec_mergel (vector float, vector float);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool int vec_mergel (vector bool int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_mergel (vector signed int, vector signed int);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned int vec_mergel (vector unsigned int,
|
|
|
|
vector unsigned int);
|
2002-01-23 03:10:39 +01:00
|
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|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector float vec_vmrglw (vector float, vector float);
|
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|
vector signed int vec_vmrglw (vector signed int, vector signed int);
|
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|
|
vector unsigned int vec_vmrglw (vector unsigned int,
|
|
|
|
vector unsigned int);
|
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|
|
vector bool int vec_vmrglw (vector bool int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short vec_vmrglh (vector bool short, vector bool short);
|
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|
|
vector signed short vec_vmrglh (vector signed short,
|
|
|
|
vector signed short);
|
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|
|
vector unsigned short vec_vmrglh (vector unsigned short,
|
|
|
|
vector unsigned short);
|
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|
|
vector pixel vec_vmrglh (vector pixel, vector pixel);
|
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|
vector bool char vec_vmrglb (vector bool char, vector bool char);
|
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|
|
vector signed char vec_vmrglb (vector signed char, vector signed char);
|
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|
|
vector unsigned char vec_vmrglb (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned short vec_mfvscr (void);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned char vec_min (vector bool char, vector unsigned char);
|
|
|
|
vector unsigned char vec_min (vector unsigned char, vector bool char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_min (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed char vec_min (vector bool char, vector signed char);
|
|
|
|
vector signed char vec_min (vector signed char, vector bool char);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed char vec_min (vector signed char, vector signed char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned short vec_min (vector bool short,
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short);
|
|
|
|
vector unsigned short vec_min (vector unsigned short,
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short);
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned short vec_min (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed short vec_min (vector bool short, vector signed short);
|
|
|
|
vector signed short vec_min (vector signed short, vector bool short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed short vec_min (vector signed short, vector signed short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned int vec_min (vector bool int, vector unsigned int);
|
|
|
|
vector unsigned int vec_min (vector unsigned int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector unsigned int vec_min (vector unsigned int, vector unsigned int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_min (vector bool int, vector signed int);
|
|
|
|
vector signed int vec_min (vector signed int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_min (vector signed int, vector signed int);
|
|
|
|
vector float vec_min (vector float, vector float);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector float vec_vminfp (vector float, vector float);
|
|
|
|
|
|
|
|
vector signed int vec_vminsw (vector bool int, vector signed int);
|
|
|
|
vector signed int vec_vminsw (vector signed int, vector bool int);
|
|
|
|
vector signed int vec_vminsw (vector signed int, vector signed int);
|
|
|
|
|
|
|
|
vector unsigned int vec_vminuw (vector bool int, vector unsigned int);
|
|
|
|
vector unsigned int vec_vminuw (vector unsigned int, vector bool int);
|
|
|
|
vector unsigned int vec_vminuw (vector unsigned int,
|
|
|
|
vector unsigned int);
|
|
|
|
|
|
|
|
vector signed short vec_vminsh (vector bool short, vector signed short);
|
|
|
|
vector signed short vec_vminsh (vector signed short, vector bool short);
|
|
|
|
vector signed short vec_vminsh (vector signed short,
|
|
|
|
vector signed short);
|
|
|
|
|
|
|
|
vector unsigned short vec_vminuh (vector bool short,
|
|
|
|
vector unsigned short);
|
|
|
|
vector unsigned short vec_vminuh (vector unsigned short,
|
|
|
|
vector bool short);
|
|
|
|
vector unsigned short vec_vminuh (vector unsigned short,
|
|
|
|
vector unsigned short);
|
|
|
|
|
|
|
|
vector signed char vec_vminsb (vector bool char, vector signed char);
|
|
|
|
vector signed char vec_vminsb (vector signed char, vector bool char);
|
|
|
|
vector signed char vec_vminsb (vector signed char, vector signed char);
|
|
|
|
|
|
|
|
vector unsigned char vec_vminub (vector bool char,
|
|
|
|
vector unsigned char);
|
|
|
|
vector unsigned char vec_vminub (vector unsigned char,
|
|
|
|
vector bool char);
|
|
|
|
vector unsigned char vec_vminub (vector unsigned char,
|
|
|
|
vector unsigned char);
|
|
|
|
|
|
|
|
vector signed short vec_mladd (vector signed short,
|
|
|
|
vector signed short,
|
2002-02-20 19:11:53 +01:00
|
|
|
vector signed short);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector signed short vec_mladd (vector signed short,
|
|
|
|
vector unsigned short,
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned short);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector signed short vec_mladd (vector unsigned short,
|
|
|
|
vector signed short,
|
2002-02-20 19:11:53 +01:00
|
|
|
vector signed short);
|
|
|
|
vector unsigned short vec_mladd (vector unsigned short,
|
|
|
|
vector unsigned short,
|
|
|
|
vector unsigned short);
|
|
|
|
|
2002-02-21 22:22:09 +01:00
|
|
|
vector signed short vec_mradds (vector signed short,
|
|
|
|
vector signed short,
|
2002-02-20 19:11:53 +01:00
|
|
|
vector signed short);
|
|
|
|
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned int vec_msum (vector unsigned char,
|
|
|
|
vector unsigned char,
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_msum (vector signed char,
|
|
|
|
vector unsigned char,
|
2002-02-20 19:11:53 +01:00
|
|
|
vector signed int);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned int vec_msum (vector unsigned short,
|
|
|
|
vector unsigned short,
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_msum (vector signed short,
|
|
|
|
vector signed short,
|
2002-02-20 19:11:53 +01:00
|
|
|
vector signed int);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_vmsumshm (vector signed short,
|
|
|
|
vector signed short,
|
|
|
|
vector signed int);
|
|
|
|
|
|
|
|
vector unsigned int vec_vmsumuhm (vector unsigned short,
|
|
|
|
vector unsigned short,
|
|
|
|
vector unsigned int);
|
|
|
|
|
|
|
|
vector signed int vec_vmsummbm (vector signed char,
|
|
|
|
vector unsigned char,
|
|
|
|
vector signed int);
|
|
|
|
|
|
|
|
vector unsigned int vec_vmsumubm (vector unsigned char,
|
|
|
|
vector unsigned char,
|
|
|
|
vector unsigned int);
|
|
|
|
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned int vec_msums (vector unsigned short,
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short,
|
|
|
|
vector unsigned int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_msums (vector signed short,
|
|
|
|
vector signed short,
|
2002-02-20 19:11:53 +01:00
|
|
|
vector signed int);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_vmsumshs (vector signed short,
|
|
|
|
vector signed short,
|
|
|
|
vector signed int);
|
|
|
|
|
|
|
|
vector unsigned int vec_vmsumuhs (vector unsigned short,
|
|
|
|
vector unsigned short,
|
|
|
|
vector unsigned int);
|
|
|
|
|
2002-01-23 03:10:39 +01:00
|
|
|
void vec_mtvscr (vector signed int);
|
|
|
|
void vec_mtvscr (vector unsigned int);
|
2004-08-12 23:19:08 +02:00
|
|
|
void vec_mtvscr (vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
void vec_mtvscr (vector signed short);
|
|
|
|
void vec_mtvscr (vector unsigned short);
|
2004-08-12 23:19:08 +02:00
|
|
|
void vec_mtvscr (vector bool short);
|
|
|
|
void vec_mtvscr (vector pixel);
|
2002-01-23 03:10:39 +01:00
|
|
|
void vec_mtvscr (vector signed char);
|
|
|
|
void vec_mtvscr (vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
void vec_mtvscr (vector bool char);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short vec_mule (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed short vec_mule (vector signed char,
|
|
|
|
vector signed char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned int vec_mule (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_mule (vector signed short, vector signed short);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_vmulesh (vector signed short,
|
|
|
|
vector signed short);
|
|
|
|
|
|
|
|
vector unsigned int vec_vmuleuh (vector unsigned short,
|
|
|
|
vector unsigned short);
|
|
|
|
|
|
|
|
vector signed short vec_vmulesb (vector signed char,
|
|
|
|
vector signed char);
|
|
|
|
|
|
|
|
vector unsigned short vec_vmuleub (vector unsigned char,
|
|
|
|
vector unsigned char);
|
|
|
|
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short vec_mulo (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed short vec_mulo (vector signed char, vector signed char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned int vec_mulo (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_mulo (vector signed short, vector signed short);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_vmulosh (vector signed short,
|
|
|
|
vector signed short);
|
|
|
|
|
|
|
|
vector unsigned int vec_vmulouh (vector unsigned short,
|
|
|
|
vector unsigned short);
|
|
|
|
|
|
|
|
vector signed short vec_vmulosb (vector signed char,
|
|
|
|
vector signed char);
|
|
|
|
|
|
|
|
vector unsigned short vec_vmuloub (vector unsigned char,
|
|
|
|
vector unsigned char);
|
|
|
|
|
2002-01-23 03:10:39 +01:00
|
|
|
vector float vec_nmsub (vector float, vector float, vector float);
|
|
|
|
|
|
|
|
vector float vec_nor (vector float, vector float);
|
|
|
|
vector signed int vec_nor (vector signed int, vector signed int);
|
|
|
|
vector unsigned int vec_nor (vector unsigned int, vector unsigned int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool int vec_nor (vector bool int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed short vec_nor (vector signed short, vector signed short);
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned short vec_nor (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short vec_nor (vector bool short, vector bool short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed char vec_nor (vector signed char, vector signed char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_nor (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool char vec_nor (vector bool char, vector bool char);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
|
|
|
vector float vec_or (vector float, vector float);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector float vec_or (vector float, vector bool int);
|
|
|
|
vector float vec_or (vector bool int, vector float);
|
|
|
|
vector bool int vec_or (vector bool int, vector bool int);
|
|
|
|
vector signed int vec_or (vector bool int, vector signed int);
|
|
|
|
vector signed int vec_or (vector signed int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_or (vector signed int, vector signed int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned int vec_or (vector bool int, vector unsigned int);
|
|
|
|
vector unsigned int vec_or (vector unsigned int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector unsigned int vec_or (vector unsigned int, vector unsigned int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short vec_or (vector bool short, vector bool short);
|
|
|
|
vector signed short vec_or (vector bool short, vector signed short);
|
|
|
|
vector signed short vec_or (vector signed short, vector bool short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed short vec_or (vector signed short, vector signed short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned short vec_or (vector bool short, vector unsigned short);
|
|
|
|
vector unsigned short vec_or (vector unsigned short, vector bool short);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short vec_or (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed char vec_or (vector bool char, vector signed char);
|
|
|
|
vector bool char vec_or (vector bool char, vector bool char);
|
|
|
|
vector signed char vec_or (vector signed char, vector bool char);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed char vec_or (vector signed char, vector signed char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned char vec_or (vector bool char, vector unsigned char);
|
|
|
|
vector unsigned char vec_or (vector unsigned char, vector bool char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_or (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
|
|
|
vector signed char vec_pack (vector signed short, vector signed short);
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned char vec_pack (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool char vec_pack (vector bool short, vector bool short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed short vec_pack (vector signed int, vector signed int);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short vec_pack (vector unsigned int,
|
|
|
|
vector unsigned int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short vec_pack (vector bool int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short vec_vpkuwum (vector bool int, vector bool int);
|
|
|
|
vector signed short vec_vpkuwum (vector signed int, vector signed int);
|
|
|
|
vector unsigned short vec_vpkuwum (vector unsigned int,
|
|
|
|
vector unsigned int);
|
|
|
|
|
|
|
|
vector bool char vec_vpkuhum (vector bool short, vector bool short);
|
|
|
|
vector signed char vec_vpkuhum (vector signed short,
|
|
|
|
vector signed short);
|
|
|
|
vector unsigned char vec_vpkuhum (vector unsigned short,
|
|
|
|
vector unsigned short);
|
|
|
|
|
|
|
|
vector pixel vec_packpx (vector unsigned int, vector unsigned int);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned char vec_packs (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed char vec_packs (vector signed short, vector signed short);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short vec_packs (vector unsigned int,
|
|
|
|
vector unsigned int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed short vec_packs (vector signed int, vector signed int);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed short vec_vpkswss (vector signed int, vector signed int);
|
|
|
|
|
|
|
|
vector unsigned short vec_vpkuwus (vector unsigned int,
|
|
|
|
vector unsigned int);
|
|
|
|
|
|
|
|
vector signed char vec_vpkshss (vector signed short,
|
|
|
|
vector signed short);
|
|
|
|
|
|
|
|
vector unsigned char vec_vpkuhus (vector unsigned short,
|
|
|
|
vector unsigned short);
|
|
|
|
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned char vec_packsu (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_packsu (vector signed short,
|
|
|
|
vector signed short);
|
|
|
|
vector unsigned short vec_packsu (vector unsigned int,
|
|
|
|
vector unsigned int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector unsigned short vec_packsu (vector signed int, vector signed int);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned short vec_vpkswus (vector signed int,
|
|
|
|
vector signed int);
|
|
|
|
|
|
|
|
vector unsigned char vec_vpkshus (vector signed short,
|
|
|
|
vector signed short);
|
|
|
|
|
|
|
|
vector float vec_perm (vector float,
|
|
|
|
vector float,
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_perm (vector signed int,
|
|
|
|
vector signed int,
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned int vec_perm (vector unsigned int,
|
|
|
|
vector unsigned int,
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool int vec_perm (vector bool int,
|
|
|
|
vector bool int,
|
|
|
|
vector unsigned char);
|
|
|
|
vector signed short vec_perm (vector signed short,
|
|
|
|
vector signed short,
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned char);
|
|
|
|
vector unsigned short vec_perm (vector unsigned short,
|
|
|
|
vector unsigned short,
|
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short vec_perm (vector bool short,
|
|
|
|
vector bool short,
|
|
|
|
vector unsigned char);
|
|
|
|
vector pixel vec_perm (vector pixel,
|
|
|
|
vector pixel,
|
|
|
|
vector unsigned char);
|
|
|
|
vector signed char vec_perm (vector signed char,
|
|
|
|
vector signed char,
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_perm (vector unsigned char,
|
|
|
|
vector unsigned char,
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool char vec_perm (vector bool char,
|
|
|
|
vector bool char,
|
|
|
|
vector unsigned char);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
|
|
|
vector float vec_re (vector float);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed char vec_rl (vector signed char,
|
|
|
|
vector unsigned char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_rl (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed short vec_rl (vector signed short, vector unsigned short);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short vec_rl (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_rl (vector signed int, vector unsigned int);
|
|
|
|
vector unsigned int vec_rl (vector unsigned int, vector unsigned int);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_vrlw (vector signed int, vector unsigned int);
|
|
|
|
vector unsigned int vec_vrlw (vector unsigned int, vector unsigned int);
|
|
|
|
|
|
|
|
vector signed short vec_vrlh (vector signed short,
|
|
|
|
vector unsigned short);
|
|
|
|
vector unsigned short vec_vrlh (vector unsigned short,
|
|
|
|
vector unsigned short);
|
|
|
|
|
|
|
|
vector signed char vec_vrlb (vector signed char, vector unsigned char);
|
|
|
|
vector unsigned char vec_vrlb (vector unsigned char,
|
|
|
|
vector unsigned char);
|
|
|
|
|
2002-01-23 03:10:39 +01:00
|
|
|
vector float vec_round (vector float);
|
|
|
|
|
|
|
|
vector float vec_rsqrte (vector float);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector float vec_sel (vector float, vector float, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector float vec_sel (vector float, vector float, vector unsigned int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_sel (vector signed int,
|
|
|
|
vector signed int,
|
|
|
|
vector bool int);
|
|
|
|
vector signed int vec_sel (vector signed int,
|
|
|
|
vector signed int,
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned int vec_sel (vector unsigned int,
|
|
|
|
vector unsigned int,
|
|
|
|
vector bool int);
|
|
|
|
vector unsigned int vec_sel (vector unsigned int,
|
|
|
|
vector unsigned int,
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool int vec_sel (vector bool int,
|
|
|
|
vector bool int,
|
|
|
|
vector bool int);
|
|
|
|
vector bool int vec_sel (vector bool int,
|
|
|
|
vector bool int,
|
|
|
|
vector unsigned int);
|
|
|
|
vector signed short vec_sel (vector signed short,
|
|
|
|
vector signed short,
|
|
|
|
vector bool short);
|
|
|
|
vector signed short vec_sel (vector signed short,
|
|
|
|
vector signed short,
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned short);
|
|
|
|
vector unsigned short vec_sel (vector unsigned short,
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short,
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short);
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned short vec_sel (vector unsigned short,
|
|
|
|
vector unsigned short,
|
|
|
|
vector unsigned short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short vec_sel (vector bool short,
|
|
|
|
vector bool short,
|
|
|
|
vector bool short);
|
|
|
|
vector bool short vec_sel (vector bool short,
|
|
|
|
vector bool short,
|
|
|
|
vector unsigned short);
|
|
|
|
vector signed char vec_sel (vector signed char,
|
|
|
|
vector signed char,
|
|
|
|
vector bool char);
|
|
|
|
vector signed char vec_sel (vector signed char,
|
|
|
|
vector signed char,
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_sel (vector unsigned char,
|
|
|
|
vector unsigned char,
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_sel (vector unsigned char,
|
|
|
|
vector unsigned char,
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool char vec_sel (vector bool char,
|
|
|
|
vector bool char,
|
|
|
|
vector bool char);
|
|
|
|
vector bool char vec_sel (vector bool char,
|
|
|
|
vector bool char,
|
|
|
|
vector unsigned char);
|
|
|
|
|
|
|
|
vector signed char vec_sl (vector signed char,
|
|
|
|
vector unsigned char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_sl (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed short vec_sl (vector signed short, vector unsigned short);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short vec_sl (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_sl (vector signed int, vector unsigned int);
|
|
|
|
vector unsigned int vec_sl (vector unsigned int, vector unsigned int);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_vslw (vector signed int, vector unsigned int);
|
|
|
|
vector unsigned int vec_vslw (vector unsigned int, vector unsigned int);
|
|
|
|
|
|
|
|
vector signed short vec_vslh (vector signed short,
|
|
|
|
vector unsigned short);
|
|
|
|
vector unsigned short vec_vslh (vector unsigned short,
|
|
|
|
vector unsigned short);
|
|
|
|
|
|
|
|
vector signed char vec_vslb (vector signed char, vector unsigned char);
|
|
|
|
vector unsigned char vec_vslb (vector unsigned char,
|
|
|
|
vector unsigned char);
|
|
|
|
|
|
|
|
vector float vec_sld (vector float, vector float, const int);
|
|
|
|
vector signed int vec_sld (vector signed int,
|
|
|
|
vector signed int,
|
|
|
|
const int);
|
|
|
|
vector unsigned int vec_sld (vector unsigned int,
|
|
|
|
vector unsigned int,
|
|
|
|
const int);
|
|
|
|
vector bool int vec_sld (vector bool int,
|
|
|
|
vector bool int,
|
|
|
|
const int);
|
|
|
|
vector signed short vec_sld (vector signed short,
|
|
|
|
vector signed short,
|
|
|
|
const int);
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned short vec_sld (vector unsigned short,
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned short,
|
|
|
|
const int);
|
|
|
|
vector bool short vec_sld (vector bool short,
|
|
|
|
vector bool short,
|
|
|
|
const int);
|
|
|
|
vector pixel vec_sld (vector pixel,
|
|
|
|
vector pixel,
|
|
|
|
const int);
|
|
|
|
vector signed char vec_sld (vector signed char,
|
|
|
|
vector signed char,
|
|
|
|
const int);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_sld (vector unsigned char,
|
|
|
|
vector unsigned char,
|
2004-08-12 23:19:08 +02:00
|
|
|
const int);
|
|
|
|
vector bool char vec_sld (vector bool char,
|
|
|
|
vector bool char,
|
|
|
|
const int);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_sll (vector signed int,
|
|
|
|
vector unsigned int);
|
|
|
|
vector signed int vec_sll (vector signed int,
|
|
|
|
vector unsigned short);
|
|
|
|
vector signed int vec_sll (vector signed int,
|
|
|
|
vector unsigned char);
|
|
|
|
vector unsigned int vec_sll (vector unsigned int,
|
|
|
|
vector unsigned int);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned int vec_sll (vector unsigned int,
|
|
|
|
vector unsigned short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned int vec_sll (vector unsigned int,
|
|
|
|
vector unsigned char);
|
|
|
|
vector bool int vec_sll (vector bool int,
|
|
|
|
vector unsigned int);
|
|
|
|
vector bool int vec_sll (vector bool int,
|
|
|
|
vector unsigned short);
|
|
|
|
vector bool int vec_sll (vector bool int,
|
|
|
|
vector unsigned char);
|
|
|
|
vector signed short vec_sll (vector signed short,
|
|
|
|
vector unsigned int);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector signed short vec_sll (vector signed short,
|
|
|
|
vector unsigned short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed short vec_sll (vector signed short,
|
|
|
|
vector unsigned char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short vec_sll (vector unsigned short,
|
|
|
|
vector unsigned int);
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned short vec_sll (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short vec_sll (vector unsigned short,
|
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short vec_sll (vector bool short, vector unsigned int);
|
|
|
|
vector bool short vec_sll (vector bool short, vector unsigned short);
|
|
|
|
vector bool short vec_sll (vector bool short, vector unsigned char);
|
|
|
|
vector pixel vec_sll (vector pixel, vector unsigned int);
|
|
|
|
vector pixel vec_sll (vector pixel, vector unsigned short);
|
|
|
|
vector pixel vec_sll (vector pixel, vector unsigned char);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed char vec_sll (vector signed char, vector unsigned int);
|
|
|
|
vector signed char vec_sll (vector signed char, vector unsigned short);
|
|
|
|
vector signed char vec_sll (vector signed char, vector unsigned char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_sll (vector unsigned char,
|
|
|
|
vector unsigned int);
|
|
|
|
vector unsigned char vec_sll (vector unsigned char,
|
|
|
|
vector unsigned short);
|
|
|
|
vector unsigned char vec_sll (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool char vec_sll (vector bool char, vector unsigned int);
|
|
|
|
vector bool char vec_sll (vector bool char, vector unsigned short);
|
|
|
|
vector bool char vec_sll (vector bool char, vector unsigned char);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
|
|
|
vector float vec_slo (vector float, vector signed char);
|
|
|
|
vector float vec_slo (vector float, vector unsigned char);
|
|
|
|
vector signed int vec_slo (vector signed int, vector signed char);
|
|
|
|
vector signed int vec_slo (vector signed int, vector unsigned char);
|
|
|
|
vector unsigned int vec_slo (vector unsigned int, vector signed char);
|
|
|
|
vector unsigned int vec_slo (vector unsigned int, vector unsigned char);
|
|
|
|
vector signed short vec_slo (vector signed short, vector signed char);
|
|
|
|
vector signed short vec_slo (vector signed short, vector unsigned char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short vec_slo (vector unsigned short,
|
|
|
|
vector signed char);
|
|
|
|
vector unsigned short vec_slo (vector unsigned short,
|
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector pixel vec_slo (vector pixel, vector signed char);
|
|
|
|
vector pixel vec_slo (vector pixel, vector unsigned char);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed char vec_slo (vector signed char, vector signed char);
|
|
|
|
vector signed char vec_slo (vector signed char, vector unsigned char);
|
|
|
|
vector unsigned char vec_slo (vector unsigned char, vector signed char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_slo (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed char vec_splat (vector signed char, const int);
|
|
|
|
vector unsigned char vec_splat (vector unsigned char, const int);
|
|
|
|
vector bool char vec_splat (vector bool char, const int);
|
|
|
|
vector signed short vec_splat (vector signed short, const int);
|
|
|
|
vector unsigned short vec_splat (vector unsigned short, const int);
|
|
|
|
vector bool short vec_splat (vector bool short, const int);
|
|
|
|
vector pixel vec_splat (vector pixel, const int);
|
|
|
|
vector float vec_splat (vector float, const int);
|
|
|
|
vector signed int vec_splat (vector signed int, const int);
|
|
|
|
vector unsigned int vec_splat (vector unsigned int, const int);
|
|
|
|
vector bool int vec_splat (vector bool int, const int);
|
|
|
|
|
|
|
|
vector float vec_vspltw (vector float, const int);
|
|
|
|
vector signed int vec_vspltw (vector signed int, const int);
|
|
|
|
vector unsigned int vec_vspltw (vector unsigned int, const int);
|
|
|
|
vector bool int vec_vspltw (vector bool int, const int);
|
|
|
|
|
|
|
|
vector bool short vec_vsplth (vector bool short, const int);
|
|
|
|
vector signed short vec_vsplth (vector signed short, const int);
|
|
|
|
vector unsigned short vec_vsplth (vector unsigned short, const int);
|
|
|
|
vector pixel vec_vsplth (vector pixel, const int);
|
|
|
|
|
|
|
|
vector signed char vec_vspltb (vector signed char, const int);
|
|
|
|
vector unsigned char vec_vspltb (vector unsigned char, const int);
|
|
|
|
vector bool char vec_vspltb (vector bool char, const int);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed char vec_splat_s8 (const int);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed short vec_splat_s16 (const int);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_splat_s32 (const int);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned char vec_splat_u8 (const int);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned short vec_splat_u16 (const int);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned int vec_splat_u32 (const int);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
|
|
|
vector signed char vec_sr (vector signed char, vector unsigned char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_sr (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed short vec_sr (vector signed short,
|
|
|
|
vector unsigned short);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short vec_sr (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_sr (vector signed int, vector unsigned int);
|
|
|
|
vector unsigned int vec_sr (vector unsigned int, vector unsigned int);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_vsrw (vector signed int, vector unsigned int);
|
|
|
|
vector unsigned int vec_vsrw (vector unsigned int, vector unsigned int);
|
|
|
|
|
|
|
|
vector signed short vec_vsrh (vector signed short,
|
|
|
|
vector unsigned short);
|
|
|
|
vector unsigned short vec_vsrh (vector unsigned short,
|
|
|
|
vector unsigned short);
|
|
|
|
|
|
|
|
vector signed char vec_vsrb (vector signed char, vector unsigned char);
|
|
|
|
vector unsigned char vec_vsrb (vector unsigned char,
|
|
|
|
vector unsigned char);
|
|
|
|
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed char vec_sra (vector signed char, vector unsigned char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_sra (vector unsigned char,
|
|
|
|
vector unsigned char);
|
|
|
|
vector signed short vec_sra (vector signed short,
|
|
|
|
vector unsigned short);
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned short vec_sra (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_sra (vector signed int, vector unsigned int);
|
|
|
|
vector unsigned int vec_sra (vector unsigned int, vector unsigned int);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_vsraw (vector signed int, vector unsigned int);
|
|
|
|
vector unsigned int vec_vsraw (vector unsigned int,
|
|
|
|
vector unsigned int);
|
|
|
|
|
|
|
|
vector signed short vec_vsrah (vector signed short,
|
|
|
|
vector unsigned short);
|
|
|
|
vector unsigned short vec_vsrah (vector unsigned short,
|
|
|
|
vector unsigned short);
|
|
|
|
|
|
|
|
vector signed char vec_vsrab (vector signed char, vector unsigned char);
|
|
|
|
vector unsigned char vec_vsrab (vector unsigned char,
|
|
|
|
vector unsigned char);
|
|
|
|
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_srl (vector signed int, vector unsigned int);
|
|
|
|
vector signed int vec_srl (vector signed int, vector unsigned short);
|
|
|
|
vector signed int vec_srl (vector signed int, vector unsigned char);
|
|
|
|
vector unsigned int vec_srl (vector unsigned int, vector unsigned int);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned int vec_srl (vector unsigned int,
|
|
|
|
vector unsigned short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector unsigned int vec_srl (vector unsigned int, vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool int vec_srl (vector bool int, vector unsigned int);
|
|
|
|
vector bool int vec_srl (vector bool int, vector unsigned short);
|
|
|
|
vector bool int vec_srl (vector bool int, vector unsigned char);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed short vec_srl (vector signed short, vector unsigned int);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector signed short vec_srl (vector signed short,
|
|
|
|
vector unsigned short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed short vec_srl (vector signed short, vector unsigned char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short vec_srl (vector unsigned short,
|
|
|
|
vector unsigned int);
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned short vec_srl (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short vec_srl (vector unsigned short,
|
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short vec_srl (vector bool short, vector unsigned int);
|
|
|
|
vector bool short vec_srl (vector bool short, vector unsigned short);
|
|
|
|
vector bool short vec_srl (vector bool short, vector unsigned char);
|
|
|
|
vector pixel vec_srl (vector pixel, vector unsigned int);
|
|
|
|
vector pixel vec_srl (vector pixel, vector unsigned short);
|
|
|
|
vector pixel vec_srl (vector pixel, vector unsigned char);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed char vec_srl (vector signed char, vector unsigned int);
|
|
|
|
vector signed char vec_srl (vector signed char, vector unsigned short);
|
|
|
|
vector signed char vec_srl (vector signed char, vector unsigned char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_srl (vector unsigned char,
|
|
|
|
vector unsigned int);
|
|
|
|
vector unsigned char vec_srl (vector unsigned char,
|
|
|
|
vector unsigned short);
|
|
|
|
vector unsigned char vec_srl (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool char vec_srl (vector bool char, vector unsigned int);
|
|
|
|
vector bool char vec_srl (vector bool char, vector unsigned short);
|
|
|
|
vector bool char vec_srl (vector bool char, vector unsigned char);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
|
|
|
vector float vec_sro (vector float, vector signed char);
|
|
|
|
vector float vec_sro (vector float, vector unsigned char);
|
|
|
|
vector signed int vec_sro (vector signed int, vector signed char);
|
|
|
|
vector signed int vec_sro (vector signed int, vector unsigned char);
|
|
|
|
vector unsigned int vec_sro (vector unsigned int, vector signed char);
|
|
|
|
vector unsigned int vec_sro (vector unsigned int, vector unsigned char);
|
|
|
|
vector signed short vec_sro (vector signed short, vector signed char);
|
|
|
|
vector signed short vec_sro (vector signed short, vector unsigned char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short vec_sro (vector unsigned short,
|
|
|
|
vector signed char);
|
|
|
|
vector unsigned short vec_sro (vector unsigned short,
|
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector pixel vec_sro (vector pixel, vector signed char);
|
|
|
|
vector pixel vec_sro (vector pixel, vector unsigned char);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed char vec_sro (vector signed char, vector signed char);
|
|
|
|
vector signed char vec_sro (vector signed char, vector unsigned char);
|
|
|
|
vector unsigned char vec_sro (vector unsigned char, vector signed char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_sro (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
|
|
|
void vec_st (vector float, int, vector float *);
|
2004-08-12 23:19:08 +02:00
|
|
|
void vec_st (vector float, int, float *);
|
|
|
|
void vec_st (vector signed int, int, vector signed int *);
|
2002-01-23 03:10:39 +01:00
|
|
|
void vec_st (vector signed int, int, int *);
|
|
|
|
void vec_st (vector unsigned int, int, vector unsigned int *);
|
2004-08-12 23:19:08 +02:00
|
|
|
void vec_st (vector unsigned int, int, unsigned int *);
|
|
|
|
void vec_st (vector bool int, int, vector bool int *);
|
|
|
|
void vec_st (vector bool int, int, unsigned int *);
|
|
|
|
void vec_st (vector bool int, int, int *);
|
2002-01-23 03:10:39 +01:00
|
|
|
void vec_st (vector signed short, int, vector signed short *);
|
2004-08-12 23:19:08 +02:00
|
|
|
void vec_st (vector signed short, int, short *);
|
2002-01-23 03:10:39 +01:00
|
|
|
void vec_st (vector unsigned short, int, vector unsigned short *);
|
2004-08-12 23:19:08 +02:00
|
|
|
void vec_st (vector unsigned short, int, unsigned short *);
|
|
|
|
void vec_st (vector bool short, int, vector bool short *);
|
|
|
|
void vec_st (vector bool short, int, unsigned short *);
|
|
|
|
void vec_st (vector pixel, int, vector pixel *);
|
|
|
|
void vec_st (vector pixel, int, unsigned short *);
|
|
|
|
void vec_st (vector pixel, int, short *);
|
|
|
|
void vec_st (vector bool short, int, short *);
|
2002-01-23 03:10:39 +01:00
|
|
|
void vec_st (vector signed char, int, vector signed char *);
|
2004-08-12 23:19:08 +02:00
|
|
|
void vec_st (vector signed char, int, signed char *);
|
2002-01-23 03:10:39 +01:00
|
|
|
void vec_st (vector unsigned char, int, vector unsigned char *);
|
2004-08-12 23:19:08 +02:00
|
|
|
void vec_st (vector unsigned char, int, unsigned char *);
|
|
|
|
void vec_st (vector bool char, int, vector bool char *);
|
|
|
|
void vec_st (vector bool char, int, unsigned char *);
|
|
|
|
void vec_st (vector bool char, int, signed char *);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
|
|
|
void vec_ste (vector signed char, int, signed char *);
|
|
|
|
void vec_ste (vector unsigned char, int, unsigned char *);
|
2004-08-12 23:19:08 +02:00
|
|
|
void vec_ste (vector bool char, int, signed char *);
|
|
|
|
void vec_ste (vector bool char, int, unsigned char *);
|
2002-01-23 03:10:39 +01:00
|
|
|
void vec_ste (vector signed short, int, short *);
|
2004-08-12 23:19:08 +02:00
|
|
|
void vec_ste (vector unsigned short, int, unsigned short *);
|
|
|
|
void vec_ste (vector bool short, int, short *);
|
|
|
|
void vec_ste (vector bool short, int, unsigned short *);
|
|
|
|
void vec_ste (vector pixel, int, short *);
|
|
|
|
void vec_ste (vector pixel, int, unsigned short *);
|
|
|
|
void vec_ste (vector float, int, float *);
|
2002-01-23 03:10:39 +01:00
|
|
|
void vec_ste (vector signed int, int, int *);
|
|
|
|
void vec_ste (vector unsigned int, int, unsigned int *);
|
2004-08-12 23:19:08 +02:00
|
|
|
void vec_ste (vector bool int, int, int *);
|
|
|
|
void vec_ste (vector bool int, int, unsigned int *);
|
|
|
|
|
|
|
|
void vec_stvewx (vector float, int, float *);
|
|
|
|
void vec_stvewx (vector signed int, int, int *);
|
|
|
|
void vec_stvewx (vector unsigned int, int, unsigned int *);
|
|
|
|
void vec_stvewx (vector bool int, int, int *);
|
|
|
|
void vec_stvewx (vector bool int, int, unsigned int *);
|
|
|
|
|
|
|
|
void vec_stvehx (vector signed short, int, short *);
|
|
|
|
void vec_stvehx (vector unsigned short, int, unsigned short *);
|
|
|
|
void vec_stvehx (vector bool short, int, short *);
|
|
|
|
void vec_stvehx (vector bool short, int, unsigned short *);
|
|
|
|
void vec_stvehx (vector pixel, int, short *);
|
|
|
|
void vec_stvehx (vector pixel, int, unsigned short *);
|
|
|
|
|
|
|
|
void vec_stvebx (vector signed char, int, signed char *);
|
|
|
|
void vec_stvebx (vector unsigned char, int, unsigned char *);
|
|
|
|
void vec_stvebx (vector bool char, int, signed char *);
|
|
|
|
void vec_stvebx (vector bool char, int, unsigned char *);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
|
|
|
void vec_stl (vector float, int, vector float *);
|
|
|
|
void vec_stl (vector float, int, float *);
|
|
|
|
void vec_stl (vector signed int, int, vector signed int *);
|
|
|
|
void vec_stl (vector signed int, int, int *);
|
|
|
|
void vec_stl (vector unsigned int, int, vector unsigned int *);
|
|
|
|
void vec_stl (vector unsigned int, int, unsigned int *);
|
2004-08-12 23:19:08 +02:00
|
|
|
void vec_stl (vector bool int, int, vector bool int *);
|
|
|
|
void vec_stl (vector bool int, int, unsigned int *);
|
|
|
|
void vec_stl (vector bool int, int, int *);
|
2002-01-23 03:10:39 +01:00
|
|
|
void vec_stl (vector signed short, int, vector signed short *);
|
2004-08-12 23:19:08 +02:00
|
|
|
void vec_stl (vector signed short, int, short *);
|
|
|
|
void vec_stl (vector unsigned short, int, vector unsigned short *);
|
2002-01-23 03:10:39 +01:00
|
|
|
void vec_stl (vector unsigned short, int, unsigned short *);
|
2004-08-12 23:19:08 +02:00
|
|
|
void vec_stl (vector bool short, int, vector bool short *);
|
|
|
|
void vec_stl (vector bool short, int, unsigned short *);
|
|
|
|
void vec_stl (vector bool short, int, short *);
|
|
|
|
void vec_stl (vector pixel, int, vector pixel *);
|
|
|
|
void vec_stl (vector pixel, int, unsigned short *);
|
|
|
|
void vec_stl (vector pixel, int, short *);
|
2002-01-23 03:10:39 +01:00
|
|
|
void vec_stl (vector signed char, int, vector signed char *);
|
2004-08-12 23:19:08 +02:00
|
|
|
void vec_stl (vector signed char, int, signed char *);
|
2002-01-23 03:10:39 +01:00
|
|
|
void vec_stl (vector unsigned char, int, vector unsigned char *);
|
2004-08-12 23:19:08 +02:00
|
|
|
void vec_stl (vector unsigned char, int, unsigned char *);
|
|
|
|
void vec_stl (vector bool char, int, vector bool char *);
|
|
|
|
void vec_stl (vector bool char, int, unsigned char *);
|
|
|
|
void vec_stl (vector bool char, int, signed char *);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed char vec_sub (vector bool char, vector signed char);
|
|
|
|
vector signed char vec_sub (vector signed char, vector bool char);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed char vec_sub (vector signed char, vector signed char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned char vec_sub (vector bool char, vector unsigned char);
|
|
|
|
vector unsigned char vec_sub (vector unsigned char, vector bool char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_sub (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed short vec_sub (vector bool short, vector signed short);
|
|
|
|
vector signed short vec_sub (vector signed short, vector bool short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed short vec_sub (vector signed short, vector signed short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned short vec_sub (vector bool short,
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short);
|
|
|
|
vector unsigned short vec_sub (vector unsigned short,
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short);
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned short vec_sub (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_sub (vector bool int, vector signed int);
|
|
|
|
vector signed int vec_sub (vector signed int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_sub (vector signed int, vector signed int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned int vec_sub (vector bool int, vector unsigned int);
|
|
|
|
vector unsigned int vec_sub (vector unsigned int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector unsigned int vec_sub (vector unsigned int, vector unsigned int);
|
|
|
|
vector float vec_sub (vector float, vector float);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector float vec_vsubfp (vector float, vector float);
|
|
|
|
|
|
|
|
vector signed int vec_vsubuwm (vector bool int, vector signed int);
|
|
|
|
vector signed int vec_vsubuwm (vector signed int, vector bool int);
|
|
|
|
vector signed int vec_vsubuwm (vector signed int, vector signed int);
|
|
|
|
vector unsigned int vec_vsubuwm (vector bool int, vector unsigned int);
|
|
|
|
vector unsigned int vec_vsubuwm (vector unsigned int, vector bool int);
|
|
|
|
vector unsigned int vec_vsubuwm (vector unsigned int,
|
|
|
|
vector unsigned int);
|
|
|
|
|
|
|
|
vector signed short vec_vsubuhm (vector bool short,
|
|
|
|
vector signed short);
|
|
|
|
vector signed short vec_vsubuhm (vector signed short,
|
|
|
|
vector bool short);
|
|
|
|
vector signed short vec_vsubuhm (vector signed short,
|
|
|
|
vector signed short);
|
|
|
|
vector unsigned short vec_vsubuhm (vector bool short,
|
|
|
|
vector unsigned short);
|
|
|
|
vector unsigned short vec_vsubuhm (vector unsigned short,
|
|
|
|
vector bool short);
|
|
|
|
vector unsigned short vec_vsubuhm (vector unsigned short,
|
|
|
|
vector unsigned short);
|
|
|
|
|
|
|
|
vector signed char vec_vsububm (vector bool char, vector signed char);
|
|
|
|
vector signed char vec_vsububm (vector signed char, vector bool char);
|
|
|
|
vector signed char vec_vsububm (vector signed char, vector signed char);
|
|
|
|
vector unsigned char vec_vsububm (vector bool char,
|
|
|
|
vector unsigned char);
|
|
|
|
vector unsigned char vec_vsububm (vector unsigned char,
|
|
|
|
vector bool char);
|
|
|
|
vector unsigned char vec_vsububm (vector unsigned char,
|
|
|
|
vector unsigned char);
|
|
|
|
|
2002-01-23 03:10:39 +01:00
|
|
|
vector unsigned int vec_subc (vector unsigned int, vector unsigned int);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned char vec_subs (vector bool char, vector unsigned char);
|
|
|
|
vector unsigned char vec_subs (vector unsigned char, vector bool char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_subs (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed char vec_subs (vector bool char, vector signed char);
|
|
|
|
vector signed char vec_subs (vector signed char, vector bool char);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed char vec_subs (vector signed char, vector signed char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned short vec_subs (vector bool short,
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short);
|
|
|
|
vector unsigned short vec_subs (vector unsigned short,
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short);
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned short vec_subs (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed short vec_subs (vector bool short, vector signed short);
|
|
|
|
vector signed short vec_subs (vector signed short, vector bool short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed short vec_subs (vector signed short, vector signed short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned int vec_subs (vector bool int, vector unsigned int);
|
|
|
|
vector unsigned int vec_subs (vector unsigned int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector unsigned int vec_subs (vector unsigned int, vector unsigned int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_subs (vector bool int, vector signed int);
|
|
|
|
vector signed int vec_subs (vector signed int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_subs (vector signed int, vector signed int);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_vsubsws (vector bool int, vector signed int);
|
|
|
|
vector signed int vec_vsubsws (vector signed int, vector bool int);
|
|
|
|
vector signed int vec_vsubsws (vector signed int, vector signed int);
|
|
|
|
|
|
|
|
vector unsigned int vec_vsubuws (vector bool int, vector unsigned int);
|
|
|
|
vector unsigned int vec_vsubuws (vector unsigned int, vector bool int);
|
|
|
|
vector unsigned int vec_vsubuws (vector unsigned int,
|
|
|
|
vector unsigned int);
|
|
|
|
|
|
|
|
vector signed short vec_vsubshs (vector bool short,
|
|
|
|
vector signed short);
|
|
|
|
vector signed short vec_vsubshs (vector signed short,
|
|
|
|
vector bool short);
|
|
|
|
vector signed short vec_vsubshs (vector signed short,
|
|
|
|
vector signed short);
|
|
|
|
|
|
|
|
vector unsigned short vec_vsubuhs (vector bool short,
|
|
|
|
vector unsigned short);
|
|
|
|
vector unsigned short vec_vsubuhs (vector unsigned short,
|
|
|
|
vector bool short);
|
|
|
|
vector unsigned short vec_vsubuhs (vector unsigned short,
|
|
|
|
vector unsigned short);
|
|
|
|
|
|
|
|
vector signed char vec_vsubsbs (vector bool char, vector signed char);
|
|
|
|
vector signed char vec_vsubsbs (vector signed char, vector bool char);
|
|
|
|
vector signed char vec_vsubsbs (vector signed char, vector signed char);
|
|
|
|
|
|
|
|
vector unsigned char vec_vsububs (vector bool char,
|
|
|
|
vector unsigned char);
|
|
|
|
vector unsigned char vec_vsububs (vector unsigned char,
|
|
|
|
vector bool char);
|
|
|
|
vector unsigned char vec_vsububs (vector unsigned char,
|
|
|
|
vector unsigned char);
|
|
|
|
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned int vec_sum4s (vector unsigned char,
|
|
|
|
vector unsigned int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_sum4s (vector signed char, vector signed int);
|
|
|
|
vector signed int vec_sum4s (vector signed short, vector signed int);
|
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed int vec_vsum4shs (vector signed short, vector signed int);
|
|
|
|
|
|
|
|
vector signed int vec_vsum4sbs (vector signed char, vector signed int);
|
|
|
|
|
|
|
|
vector unsigned int vec_vsum4ubs (vector unsigned char,
|
|
|
|
vector unsigned int);
|
|
|
|
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_sum2s (vector signed int, vector signed int);
|
|
|
|
|
|
|
|
vector signed int vec_sums (vector signed int, vector signed int);
|
|
|
|
|
|
|
|
vector float vec_trunc (vector float);
|
|
|
|
|
|
|
|
vector signed short vec_unpackh (vector signed char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short vec_unpackh (vector bool char);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_unpackh (vector signed short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool int vec_unpackh (vector bool short);
|
|
|
|
vector unsigned int vec_unpackh (vector pixel);
|
|
|
|
|
|
|
|
vector bool int vec_vupkhsh (vector bool short);
|
|
|
|
vector signed int vec_vupkhsh (vector signed short);
|
|
|
|
|
|
|
|
vector unsigned int vec_vupkhpx (vector pixel);
|
|
|
|
|
|
|
|
vector bool short vec_vupkhsb (vector bool char);
|
|
|
|
vector signed short vec_vupkhsb (vector signed char);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
|
|
|
vector signed short vec_unpackl (vector signed char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short vec_unpackl (vector bool char);
|
|
|
|
vector unsigned int vec_unpackl (vector pixel);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_unpackl (vector signed short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool int vec_unpackl (vector bool short);
|
|
|
|
|
|
|
|
vector unsigned int vec_vupklpx (vector pixel);
|
|
|
|
|
|
|
|
vector bool int vec_vupklsh (vector bool short);
|
|
|
|
vector signed int vec_vupklsh (vector signed short);
|
|
|
|
|
|
|
|
vector bool short vec_vupklsb (vector bool char);
|
|
|
|
vector signed short vec_vupklsb (vector signed char);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
|
|
|
vector float vec_xor (vector float, vector float);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector float vec_xor (vector float, vector bool int);
|
|
|
|
vector float vec_xor (vector bool int, vector float);
|
|
|
|
vector bool int vec_xor (vector bool int, vector bool int);
|
|
|
|
vector signed int vec_xor (vector bool int, vector signed int);
|
|
|
|
vector signed int vec_xor (vector signed int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed int vec_xor (vector signed int, vector signed int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned int vec_xor (vector bool int, vector unsigned int);
|
|
|
|
vector unsigned int vec_xor (vector unsigned int, vector bool int);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector unsigned int vec_xor (vector unsigned int, vector unsigned int);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short vec_xor (vector bool short, vector bool short);
|
|
|
|
vector signed short vec_xor (vector bool short, vector signed short);
|
|
|
|
vector signed short vec_xor (vector signed short, vector bool short);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed short vec_xor (vector signed short, vector signed short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned short vec_xor (vector bool short,
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned short);
|
|
|
|
vector unsigned short vec_xor (vector unsigned short,
|
2004-08-12 23:19:08 +02:00
|
|
|
vector bool short);
|
2002-02-20 19:11:53 +01:00
|
|
|
vector unsigned short vec_xor (vector unsigned short,
|
|
|
|
vector unsigned short);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector signed char vec_xor (vector bool char, vector signed char);
|
|
|
|
vector bool char vec_xor (vector bool char, vector bool char);
|
|
|
|
vector signed char vec_xor (vector signed char, vector bool char);
|
2002-01-23 03:10:39 +01:00
|
|
|
vector signed char vec_xor (vector signed char, vector signed char);
|
2004-08-12 23:19:08 +02:00
|
|
|
vector unsigned char vec_xor (vector bool char, vector unsigned char);
|
|
|
|
vector unsigned char vec_xor (vector unsigned char, vector bool char);
|
2002-02-21 22:22:09 +01:00
|
|
|
vector unsigned char vec_xor (vector unsigned char,
|
|
|
|
vector unsigned char);
|
2002-01-23 03:10:39 +01:00
|
|
|
|
2004-08-12 23:19:08 +02:00
|
|
|
int vec_all_eq (vector signed char, vector bool char);
|
|
|
|
int vec_all_eq (vector signed char, vector signed char);
|
|
|
|
int vec_all_eq (vector unsigned char, vector bool char);
|
|
|
|
int vec_all_eq (vector unsigned char, vector unsigned char);
|
|
|
|
int vec_all_eq (vector bool char, vector bool char);
|
|
|
|
int vec_all_eq (vector bool char, vector unsigned char);
|
|
|
|
int vec_all_eq (vector bool char, vector signed char);
|
|
|
|
int vec_all_eq (vector signed short, vector bool short);
|
|
|
|
int vec_all_eq (vector signed short, vector signed short);
|
|
|
|
int vec_all_eq (vector unsigned short, vector bool short);
|
|
|
|
int vec_all_eq (vector unsigned short, vector unsigned short);
|
|
|
|
int vec_all_eq (vector bool short, vector bool short);
|
|
|
|
int vec_all_eq (vector bool short, vector unsigned short);
|
|
|
|
int vec_all_eq (vector bool short, vector signed short);
|
|
|
|
int vec_all_eq (vector pixel, vector pixel);
|
|
|
|
int vec_all_eq (vector signed int, vector bool int);
|
|
|
|
int vec_all_eq (vector signed int, vector signed int);
|
|
|
|
int vec_all_eq (vector unsigned int, vector bool int);
|
|
|
|
int vec_all_eq (vector unsigned int, vector unsigned int);
|
|
|
|
int vec_all_eq (vector bool int, vector bool int);
|
|
|
|
int vec_all_eq (vector bool int, vector unsigned int);
|
|
|
|
int vec_all_eq (vector bool int, vector signed int);
|
|
|
|
int vec_all_eq (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_all_ge (vector bool char, vector unsigned char);
|
|
|
|
int vec_all_ge (vector unsigned char, vector bool char);
|
|
|
|
int vec_all_ge (vector unsigned char, vector unsigned char);
|
|
|
|
int vec_all_ge (vector bool char, vector signed char);
|
|
|
|
int vec_all_ge (vector signed char, vector bool char);
|
|
|
|
int vec_all_ge (vector signed char, vector signed char);
|
|
|
|
int vec_all_ge (vector bool short, vector unsigned short);
|
|
|
|
int vec_all_ge (vector unsigned short, vector bool short);
|
|
|
|
int vec_all_ge (vector unsigned short, vector unsigned short);
|
|
|
|
int vec_all_ge (vector signed short, vector signed short);
|
|
|
|
int vec_all_ge (vector bool short, vector signed short);
|
|
|
|
int vec_all_ge (vector signed short, vector bool short);
|
|
|
|
int vec_all_ge (vector bool int, vector unsigned int);
|
|
|
|
int vec_all_ge (vector unsigned int, vector bool int);
|
|
|
|
int vec_all_ge (vector unsigned int, vector unsigned int);
|
|
|
|
int vec_all_ge (vector bool int, vector signed int);
|
|
|
|
int vec_all_ge (vector signed int, vector bool int);
|
|
|
|
int vec_all_ge (vector signed int, vector signed int);
|
|
|
|
int vec_all_ge (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_all_gt (vector bool char, vector unsigned char);
|
|
|
|
int vec_all_gt (vector unsigned char, vector bool char);
|
|
|
|
int vec_all_gt (vector unsigned char, vector unsigned char);
|
|
|
|
int vec_all_gt (vector bool char, vector signed char);
|
|
|
|
int vec_all_gt (vector signed char, vector bool char);
|
|
|
|
int vec_all_gt (vector signed char, vector signed char);
|
|
|
|
int vec_all_gt (vector bool short, vector unsigned short);
|
|
|
|
int vec_all_gt (vector unsigned short, vector bool short);
|
|
|
|
int vec_all_gt (vector unsigned short, vector unsigned short);
|
|
|
|
int vec_all_gt (vector bool short, vector signed short);
|
|
|
|
int vec_all_gt (vector signed short, vector bool short);
|
|
|
|
int vec_all_gt (vector signed short, vector signed short);
|
|
|
|
int vec_all_gt (vector bool int, vector unsigned int);
|
|
|
|
int vec_all_gt (vector unsigned int, vector bool int);
|
|
|
|
int vec_all_gt (vector unsigned int, vector unsigned int);
|
|
|
|
int vec_all_gt (vector bool int, vector signed int);
|
|
|
|
int vec_all_gt (vector signed int, vector bool int);
|
|
|
|
int vec_all_gt (vector signed int, vector signed int);
|
|
|
|
int vec_all_gt (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_all_in (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_all_le (vector bool char, vector unsigned char);
|
|
|
|
int vec_all_le (vector unsigned char, vector bool char);
|
|
|
|
int vec_all_le (vector unsigned char, vector unsigned char);
|
|
|
|
int vec_all_le (vector bool char, vector signed char);
|
|
|
|
int vec_all_le (vector signed char, vector bool char);
|
|
|
|
int vec_all_le (vector signed char, vector signed char);
|
|
|
|
int vec_all_le (vector bool short, vector unsigned short);
|
|
|
|
int vec_all_le (vector unsigned short, vector bool short);
|
|
|
|
int vec_all_le (vector unsigned short, vector unsigned short);
|
|
|
|
int vec_all_le (vector bool short, vector signed short);
|
|
|
|
int vec_all_le (vector signed short, vector bool short);
|
|
|
|
int vec_all_le (vector signed short, vector signed short);
|
|
|
|
int vec_all_le (vector bool int, vector unsigned int);
|
|
|
|
int vec_all_le (vector unsigned int, vector bool int);
|
|
|
|
int vec_all_le (vector unsigned int, vector unsigned int);
|
|
|
|
int vec_all_le (vector bool int, vector signed int);
|
|
|
|
int vec_all_le (vector signed int, vector bool int);
|
|
|
|
int vec_all_le (vector signed int, vector signed int);
|
|
|
|
int vec_all_le (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_all_lt (vector bool char, vector unsigned char);
|
|
|
|
int vec_all_lt (vector unsigned char, vector bool char);
|
|
|
|
int vec_all_lt (vector unsigned char, vector unsigned char);
|
|
|
|
int vec_all_lt (vector bool char, vector signed char);
|
|
|
|
int vec_all_lt (vector signed char, vector bool char);
|
|
|
|
int vec_all_lt (vector signed char, vector signed char);
|
|
|
|
int vec_all_lt (vector bool short, vector unsigned short);
|
|
|
|
int vec_all_lt (vector unsigned short, vector bool short);
|
|
|
|
int vec_all_lt (vector unsigned short, vector unsigned short);
|
|
|
|
int vec_all_lt (vector bool short, vector signed short);
|
|
|
|
int vec_all_lt (vector signed short, vector bool short);
|
|
|
|
int vec_all_lt (vector signed short, vector signed short);
|
|
|
|
int vec_all_lt (vector bool int, vector unsigned int);
|
|
|
|
int vec_all_lt (vector unsigned int, vector bool int);
|
|
|
|
int vec_all_lt (vector unsigned int, vector unsigned int);
|
|
|
|
int vec_all_lt (vector bool int, vector signed int);
|
|
|
|
int vec_all_lt (vector signed int, vector bool int);
|
|
|
|
int vec_all_lt (vector signed int, vector signed int);
|
|
|
|
int vec_all_lt (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_all_nan (vector float);
|
|
|
|
|
|
|
|
int vec_all_ne (vector signed char, vector bool char);
|
|
|
|
int vec_all_ne (vector signed char, vector signed char);
|
|
|
|
int vec_all_ne (vector unsigned char, vector bool char);
|
|
|
|
int vec_all_ne (vector unsigned char, vector unsigned char);
|
|
|
|
int vec_all_ne (vector bool char, vector bool char);
|
|
|
|
int vec_all_ne (vector bool char, vector unsigned char);
|
|
|
|
int vec_all_ne (vector bool char, vector signed char);
|
|
|
|
int vec_all_ne (vector signed short, vector bool short);
|
|
|
|
int vec_all_ne (vector signed short, vector signed short);
|
|
|
|
int vec_all_ne (vector unsigned short, vector bool short);
|
|
|
|
int vec_all_ne (vector unsigned short, vector unsigned short);
|
|
|
|
int vec_all_ne (vector bool short, vector bool short);
|
|
|
|
int vec_all_ne (vector bool short, vector unsigned short);
|
|
|
|
int vec_all_ne (vector bool short, vector signed short);
|
|
|
|
int vec_all_ne (vector pixel, vector pixel);
|
|
|
|
int vec_all_ne (vector signed int, vector bool int);
|
|
|
|
int vec_all_ne (vector signed int, vector signed int);
|
|
|
|
int vec_all_ne (vector unsigned int, vector bool int);
|
|
|
|
int vec_all_ne (vector unsigned int, vector unsigned int);
|
|
|
|
int vec_all_ne (vector bool int, vector bool int);
|
|
|
|
int vec_all_ne (vector bool int, vector unsigned int);
|
|
|
|
int vec_all_ne (vector bool int, vector signed int);
|
|
|
|
int vec_all_ne (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_all_nge (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_all_ngt (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_all_nle (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_all_nlt (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_all_numeric (vector float);
|
|
|
|
|
|
|
|
int vec_any_eq (vector signed char, vector bool char);
|
|
|
|
int vec_any_eq (vector signed char, vector signed char);
|
|
|
|
int vec_any_eq (vector unsigned char, vector bool char);
|
|
|
|
int vec_any_eq (vector unsigned char, vector unsigned char);
|
|
|
|
int vec_any_eq (vector bool char, vector bool char);
|
|
|
|
int vec_any_eq (vector bool char, vector unsigned char);
|
|
|
|
int vec_any_eq (vector bool char, vector signed char);
|
|
|
|
int vec_any_eq (vector signed short, vector bool short);
|
|
|
|
int vec_any_eq (vector signed short, vector signed short);
|
|
|
|
int vec_any_eq (vector unsigned short, vector bool short);
|
|
|
|
int vec_any_eq (vector unsigned short, vector unsigned short);
|
|
|
|
int vec_any_eq (vector bool short, vector bool short);
|
|
|
|
int vec_any_eq (vector bool short, vector unsigned short);
|
|
|
|
int vec_any_eq (vector bool short, vector signed short);
|
|
|
|
int vec_any_eq (vector pixel, vector pixel);
|
|
|
|
int vec_any_eq (vector signed int, vector bool int);
|
|
|
|
int vec_any_eq (vector signed int, vector signed int);
|
|
|
|
int vec_any_eq (vector unsigned int, vector bool int);
|
|
|
|
int vec_any_eq (vector unsigned int, vector unsigned int);
|
|
|
|
int vec_any_eq (vector bool int, vector bool int);
|
|
|
|
int vec_any_eq (vector bool int, vector unsigned int);
|
|
|
|
int vec_any_eq (vector bool int, vector signed int);
|
|
|
|
int vec_any_eq (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_any_ge (vector signed char, vector bool char);
|
|
|
|
int vec_any_ge (vector unsigned char, vector bool char);
|
|
|
|
int vec_any_ge (vector unsigned char, vector unsigned char);
|
|
|
|
int vec_any_ge (vector signed char, vector signed char);
|
|
|
|
int vec_any_ge (vector bool char, vector unsigned char);
|
|
|
|
int vec_any_ge (vector bool char, vector signed char);
|
|
|
|
int vec_any_ge (vector unsigned short, vector bool short);
|
|
|
|
int vec_any_ge (vector unsigned short, vector unsigned short);
|
|
|
|
int vec_any_ge (vector signed short, vector signed short);
|
|
|
|
int vec_any_ge (vector signed short, vector bool short);
|
|
|
|
int vec_any_ge (vector bool short, vector unsigned short);
|
|
|
|
int vec_any_ge (vector bool short, vector signed short);
|
|
|
|
int vec_any_ge (vector signed int, vector bool int);
|
|
|
|
int vec_any_ge (vector unsigned int, vector bool int);
|
|
|
|
int vec_any_ge (vector unsigned int, vector unsigned int);
|
|
|
|
int vec_any_ge (vector signed int, vector signed int);
|
|
|
|
int vec_any_ge (vector bool int, vector unsigned int);
|
|
|
|
int vec_any_ge (vector bool int, vector signed int);
|
|
|
|
int vec_any_ge (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_any_gt (vector bool char, vector unsigned char);
|
|
|
|
int vec_any_gt (vector unsigned char, vector bool char);
|
|
|
|
int vec_any_gt (vector unsigned char, vector unsigned char);
|
|
|
|
int vec_any_gt (vector bool char, vector signed char);
|
|
|
|
int vec_any_gt (vector signed char, vector bool char);
|
|
|
|
int vec_any_gt (vector signed char, vector signed char);
|
|
|
|
int vec_any_gt (vector bool short, vector unsigned short);
|
|
|
|
int vec_any_gt (vector unsigned short, vector bool short);
|
|
|
|
int vec_any_gt (vector unsigned short, vector unsigned short);
|
|
|
|
int vec_any_gt (vector bool short, vector signed short);
|
|
|
|
int vec_any_gt (vector signed short, vector bool short);
|
|
|
|
int vec_any_gt (vector signed short, vector signed short);
|
|
|
|
int vec_any_gt (vector bool int, vector unsigned int);
|
|
|
|
int vec_any_gt (vector unsigned int, vector bool int);
|
|
|
|
int vec_any_gt (vector unsigned int, vector unsigned int);
|
|
|
|
int vec_any_gt (vector bool int, vector signed int);
|
|
|
|
int vec_any_gt (vector signed int, vector bool int);
|
|
|
|
int vec_any_gt (vector signed int, vector signed int);
|
|
|
|
int vec_any_gt (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_any_le (vector bool char, vector unsigned char);
|
|
|
|
int vec_any_le (vector unsigned char, vector bool char);
|
|
|
|
int vec_any_le (vector unsigned char, vector unsigned char);
|
|
|
|
int vec_any_le (vector bool char, vector signed char);
|
|
|
|
int vec_any_le (vector signed char, vector bool char);
|
|
|
|
int vec_any_le (vector signed char, vector signed char);
|
|
|
|
int vec_any_le (vector bool short, vector unsigned short);
|
|
|
|
int vec_any_le (vector unsigned short, vector bool short);
|
|
|
|
int vec_any_le (vector unsigned short, vector unsigned short);
|
|
|
|
int vec_any_le (vector bool short, vector signed short);
|
|
|
|
int vec_any_le (vector signed short, vector bool short);
|
|
|
|
int vec_any_le (vector signed short, vector signed short);
|
|
|
|
int vec_any_le (vector bool int, vector unsigned int);
|
|
|
|
int vec_any_le (vector unsigned int, vector bool int);
|
|
|
|
int vec_any_le (vector unsigned int, vector unsigned int);
|
|
|
|
int vec_any_le (vector bool int, vector signed int);
|
|
|
|
int vec_any_le (vector signed int, vector bool int);
|
|
|
|
int vec_any_le (vector signed int, vector signed int);
|
|
|
|
int vec_any_le (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_any_lt (vector bool char, vector unsigned char);
|
|
|
|
int vec_any_lt (vector unsigned char, vector bool char);
|
|
|
|
int vec_any_lt (vector unsigned char, vector unsigned char);
|
|
|
|
int vec_any_lt (vector bool char, vector signed char);
|
|
|
|
int vec_any_lt (vector signed char, vector bool char);
|
|
|
|
int vec_any_lt (vector signed char, vector signed char);
|
|
|
|
int vec_any_lt (vector bool short, vector unsigned short);
|
|
|
|
int vec_any_lt (vector unsigned short, vector bool short);
|
|
|
|
int vec_any_lt (vector unsigned short, vector unsigned short);
|
|
|
|
int vec_any_lt (vector bool short, vector signed short);
|
|
|
|
int vec_any_lt (vector signed short, vector bool short);
|
|
|
|
int vec_any_lt (vector signed short, vector signed short);
|
|
|
|
int vec_any_lt (vector bool int, vector unsigned int);
|
|
|
|
int vec_any_lt (vector unsigned int, vector bool int);
|
|
|
|
int vec_any_lt (vector unsigned int, vector unsigned int);
|
|
|
|
int vec_any_lt (vector bool int, vector signed int);
|
|
|
|
int vec_any_lt (vector signed int, vector bool int);
|
|
|
|
int vec_any_lt (vector signed int, vector signed int);
|
|
|
|
int vec_any_lt (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_any_nan (vector float);
|
|
|
|
|
|
|
|
int vec_any_ne (vector signed char, vector bool char);
|
|
|
|
int vec_any_ne (vector signed char, vector signed char);
|
|
|
|
int vec_any_ne (vector unsigned char, vector bool char);
|
|
|
|
int vec_any_ne (vector unsigned char, vector unsigned char);
|
|
|
|
int vec_any_ne (vector bool char, vector bool char);
|
|
|
|
int vec_any_ne (vector bool char, vector unsigned char);
|
|
|
|
int vec_any_ne (vector bool char, vector signed char);
|
|
|
|
int vec_any_ne (vector signed short, vector bool short);
|
|
|
|
int vec_any_ne (vector signed short, vector signed short);
|
|
|
|
int vec_any_ne (vector unsigned short, vector bool short);
|
|
|
|
int vec_any_ne (vector unsigned short, vector unsigned short);
|
|
|
|
int vec_any_ne (vector bool short, vector bool short);
|
|
|
|
int vec_any_ne (vector bool short, vector unsigned short);
|
|
|
|
int vec_any_ne (vector bool short, vector signed short);
|
|
|
|
int vec_any_ne (vector pixel, vector pixel);
|
|
|
|
int vec_any_ne (vector signed int, vector bool int);
|
|
|
|
int vec_any_ne (vector signed int, vector signed int);
|
|
|
|
int vec_any_ne (vector unsigned int, vector bool int);
|
|
|
|
int vec_any_ne (vector unsigned int, vector unsigned int);
|
|
|
|
int vec_any_ne (vector bool int, vector bool int);
|
|
|
|
int vec_any_ne (vector bool int, vector unsigned int);
|
|
|
|
int vec_any_ne (vector bool int, vector signed int);
|
|
|
|
int vec_any_ne (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_any_nge (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_any_ngt (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_any_nle (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_any_nlt (vector float, vector float);
|
|
|
|
|
|
|
|
int vec_any_numeric (vector float);
|
|
|
|
|
|
|
|
int vec_any_out (vector float, vector float);
|
2002-01-23 03:10:39 +01:00
|
|
|
@end smallexample
|
|
|
|
|
2004-11-26 14:18:14 +01:00
|
|
|
@node SPARC VIS Built-in Functions
|
|
|
|
@subsection SPARC VIS Built-in Functions
|
|
|
|
|
|
|
|
GCC supports SIMD operations on the SPARC using both the generic vector
|
2004-11-27 17:45:15 +01:00
|
|
|
extensions (@pxref{Vector Extensions}) as well as built-in functions for
|
2004-11-26 14:18:14 +01:00
|
|
|
the SPARC Visual Instruction Set (VIS). When you use the @option{-mvis}
|
|
|
|
switch, the VIS extension is exposed as the following built-in functions:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
typedef int v2si __attribute__ ((vector_size (8)));
|
|
|
|
typedef short v4hi __attribute__ ((vector_size (8)));
|
|
|
|
typedef short v2hi __attribute__ ((vector_size (4)));
|
|
|
|
typedef char v8qi __attribute__ ((vector_size (8)));
|
|
|
|
typedef char v4qi __attribute__ ((vector_size (4)));
|
|
|
|
|
|
|
|
void * __builtin_vis_alignaddr (void *, long);
|
|
|
|
int64_t __builtin_vis_faligndatadi (int64_t, int64_t);
|
|
|
|
v2si __builtin_vis_faligndatav2si (v2si, v2si);
|
|
|
|
v4hi __builtin_vis_faligndatav4hi (v4si, v4si);
|
|
|
|
v8qi __builtin_vis_faligndatav8qi (v8qi, v8qi);
|
|
|
|
|
|
|
|
v4hi __builtin_vis_fexpand (v4qi);
|
|
|
|
|
|
|
|
v4hi __builtin_vis_fmul8x16 (v4qi, v4hi);
|
|
|
|
v4hi __builtin_vis_fmul8x16au (v4qi, v4hi);
|
|
|
|
v4hi __builtin_vis_fmul8x16al (v4qi, v4hi);
|
|
|
|
v4hi __builtin_vis_fmul8sux16 (v8qi, v4hi);
|
|
|
|
v4hi __builtin_vis_fmul8ulx16 (v8qi, v4hi);
|
|
|
|
v2si __builtin_vis_fmuld8sux16 (v4qi, v2hi);
|
|
|
|
v2si __builtin_vis_fmuld8ulx16 (v4qi, v2hi);
|
|
|
|
|
|
|
|
v4qi __builtin_vis_fpack16 (v4hi);
|
|
|
|
v8qi __builtin_vis_fpack32 (v2si, v2si);
|
|
|
|
v2hi __builtin_vis_fpackfix (v2si);
|
|
|
|
v8qi __builtin_vis_fpmerge (v4qi, v4qi);
|
|
|
|
|
|
|
|
int64_t __builtin_vis_pdist (v8qi, v8qi, int64_t);
|
|
|
|
@end smallexample
|
|
|
|
|
2004-07-19 16:48:09 +02:00
|
|
|
@node Target Format Checks
|
|
|
|
@section Format Checks Specific to Particular Target Machines
|
|
|
|
|
|
|
|
For some target machines, GCC supports additional options to the
|
|
|
|
format attribute
|
|
|
|
(@pxref{Function Attributes,,Declaring Attributes of Functions}).
|
|
|
|
|
|
|
|
@menu
|
|
|
|
* Solaris Format Checks::
|
|
|
|
@end menu
|
|
|
|
|
|
|
|
@node Solaris Format Checks
|
|
|
|
@subsection Solaris Format Checks
|
|
|
|
|
|
|
|
Solaris targets support the @code{cmn_err} (or @code{__cmn_err__}) format
|
|
|
|
check. @code{cmn_err} accepts a subset of the standard @code{printf}
|
|
|
|
conversions, and the two-argument @code{%b} conversion for displaying
|
|
|
|
bit-fields. See the Solaris man page for @code{cmn_err} for more information.
|
|
|
|
|
2001-06-28 21:55:53 +02:00
|
|
|
@node Pragmas
|
|
|
|
@section Pragmas Accepted by GCC
|
|
|
|
@cindex pragmas
|
|
|
|
@cindex #pragma
|
|
|
|
|
|
|
|
GCC supports several types of pragmas, primarily in order to compile
|
|
|
|
code originally written for other compilers. Note that in general
|
|
|
|
we do not recommend the use of pragmas; @xref{Function Attributes},
|
|
|
|
for further explanation.
|
|
|
|
|
|
|
|
@menu
|
|
|
|
* ARM Pragmas::
|
2002-05-11 18:25:05 +02:00
|
|
|
* RS/6000 and PowerPC Pragmas::
|
2001-06-28 21:55:53 +02:00
|
|
|
* Darwin Pragmas::
|
* config.gcc (i[34567]86-*-solaris2*, sparc64-*-solaris2*)
(sparc-*-solaris2*): Include sol2.o and sol2-protos.h.
* config/sol2-c.c: Include "tm.h", "tm_p.h", "toplev.h",
"cpplib.h", "c-pragma.h", "c-common.h".
(solaris_pragma_align, solaris_pragma_init, solaris_pragma_fini)
(solaris_register_pragmas): New functions.
* config/sol2-protos.h: New file.
* config/sol2.c: New file.
* config/sol2.h (SOLARIS_ATTRIBUTE_TABLE, ASM_DECLARE_FUNCTION_SIZE)
(REGISTER_TARGET_PRAGMAS): New macros.
(solaris_pending_aligns, solaris_pending_inits)
(solaris_pending_finis): New variables.
* config/t-sol2 (sol2-c.o): Update dependencies.
(sol2.o): New rule.
* config/i386/i386.c (TARGET_INSERT_ATTRIBUTES): Define in terms of
SUBTARGET_INSERT_ATTRIBUTES.
(ix86_attribute_table): Include SUBTARGET_ATTRIBUTE_TABLE.
* config/i386/sol2.h (SUBTARGET_INSERT_ATTRIBUTES)
(SUBTARGET_ATTRIBUTE_TABLE, ASM_OUTPUT_CALL): Define.
* config/sparc/elf.h (ASM_DECLARE_FUNCTION_SIZE): Redefine.
* config/sparc/sp64-elf.h (ASM_DECLARE_FUNCTION_SIZE): Redefine.
* config/sparc/sol2.h (SUBTARGET_INSERT_ATTRIBUTES)
(SUBTARGET_ATTRIBUTE_TABLE, ASM_OUTPUT_CALL): Define.
* config/sparc/sparc.c (sparc_attribute_table): New.
(TARGET_INSERT_ATTRIBUTES): Define in terms of
SUBTARGET_INSERT_ATTRIBUTES.
(TARGET_ATTRIBUTE_TABLE): Define if SUBTARGET_ATTRIBUTE_TABLE
is defined.
* doc/extend.texi (Solaris Pragmas): New section.
From-SVN: r85155
2004-07-25 20:10:05 +02:00
|
|
|
* Solaris Pragmas::
|
2004-06-20 10:34:54 +02:00
|
|
|
* Symbol-Renaming Pragmas::
|
2004-09-03 19:22:40 +02:00
|
|
|
* Structure-Packing Pragmas::
|
2001-06-28 21:55:53 +02:00
|
|
|
@end menu
|
|
|
|
|
|
|
|
@node ARM Pragmas
|
|
|
|
@subsection ARM Pragmas
|
|
|
|
|
|
|
|
The ARM target defines pragmas for controlling the default addition of
|
|
|
|
@code{long_call} and @code{short_call} attributes to functions.
|
|
|
|
@xref{Function Attributes}, for information about the effects of these
|
|
|
|
attributes.
|
|
|
|
|
|
|
|
@table @code
|
|
|
|
@item long_calls
|
|
|
|
@cindex pragma, long_calls
|
|
|
|
Set all subsequent functions to have the @code{long_call} attribute.
|
|
|
|
|
|
|
|
@item no_long_calls
|
|
|
|
@cindex pragma, no_long_calls
|
|
|
|
Set all subsequent functions to have the @code{short_call} attribute.
|
|
|
|
|
|
|
|
@item long_calls_off
|
|
|
|
@cindex pragma, long_calls_off
|
|
|
|
Do not affect the @code{long_call} or @code{short_call} attributes of
|
|
|
|
subsequent functions.
|
|
|
|
@end table
|
|
|
|
|
2002-05-11 18:25:05 +02:00
|
|
|
@node RS/6000 and PowerPC Pragmas
|
|
|
|
@subsection RS/6000 and PowerPC Pragmas
|
|
|
|
|
|
|
|
The RS/6000 and PowerPC targets define one pragma for controlling
|
|
|
|
whether or not the @code{longcall} attribute is added to function
|
|
|
|
declarations by default. This pragma overrides the @option{-mlongcall}
|
2002-06-10 21:12:10 +02:00
|
|
|
option, but not the @code{longcall} and @code{shortcall} attributes.
|
2002-05-11 18:25:05 +02:00
|
|
|
@xref{RS/6000 and PowerPC Options}, for more information about when long
|
|
|
|
calls are and are not necessary.
|
|
|
|
|
|
|
|
@table @code
|
|
|
|
@item longcall (1)
|
|
|
|
@cindex pragma, longcall
|
|
|
|
Apply the @code{longcall} attribute to all subsequent function
|
|
|
|
declarations.
|
|
|
|
|
|
|
|
@item longcall (0)
|
|
|
|
Do not apply the @code{longcall} attribute to subsequent function
|
|
|
|
declarations.
|
|
|
|
@end table
|
|
|
|
|
2001-06-28 21:55:53 +02:00
|
|
|
@c Describe c4x pragmas here.
|
|
|
|
@c Describe h8300 pragmas here.
|
|
|
|
@c Describe sh pragmas here.
|
|
|
|
@c Describe v850 pragmas here.
|
|
|
|
|
|
|
|
@node Darwin Pragmas
|
|
|
|
@subsection Darwin Pragmas
|
|
|
|
|
|
|
|
The following pragmas are available for all architectures running the
|
|
|
|
Darwin operating system. These are useful for compatibility with other
|
2003-04-07 09:31:47 +02:00
|
|
|
Mac OS compilers.
|
2001-06-28 21:55:53 +02:00
|
|
|
|
|
|
|
@table @code
|
|
|
|
@item mark @var{tokens}@dots{}
|
|
|
|
@cindex pragma, mark
|
|
|
|
This pragma is accepted, but has no effect.
|
|
|
|
|
|
|
|
@item options align=@var{alignment}
|
|
|
|
@cindex pragma, options align
|
|
|
|
This pragma sets the alignment of fields in structures. The values of
|
|
|
|
@var{alignment} may be @code{mac68k}, to emulate m68k alignment, or
|
|
|
|
@code{power}, to emulate PowerPC alignment. Uses of this pragma nest
|
|
|
|
properly; to restore the previous setting, use @code{reset} for the
|
|
|
|
@var{alignment}.
|
|
|
|
|
|
|
|
@item segment @var{tokens}@dots{}
|
|
|
|
@cindex pragma, segment
|
|
|
|
This pragma is accepted, but has no effect.
|
|
|
|
|
|
|
|
@item unused (@var{var} [, @var{var}]@dots{})
|
|
|
|
@cindex pragma, unused
|
|
|
|
This pragma declares variables to be possibly unused. GCC will not
|
|
|
|
produce warnings for the listed variables. The effect is similar to
|
|
|
|
that of the @code{unused} attribute, except that this pragma may appear
|
|
|
|
anywhere within the variables' scopes.
|
|
|
|
@end table
|
|
|
|
|
* config.gcc (i[34567]86-*-solaris2*, sparc64-*-solaris2*)
(sparc-*-solaris2*): Include sol2.o and sol2-protos.h.
* config/sol2-c.c: Include "tm.h", "tm_p.h", "toplev.h",
"cpplib.h", "c-pragma.h", "c-common.h".
(solaris_pragma_align, solaris_pragma_init, solaris_pragma_fini)
(solaris_register_pragmas): New functions.
* config/sol2-protos.h: New file.
* config/sol2.c: New file.
* config/sol2.h (SOLARIS_ATTRIBUTE_TABLE, ASM_DECLARE_FUNCTION_SIZE)
(REGISTER_TARGET_PRAGMAS): New macros.
(solaris_pending_aligns, solaris_pending_inits)
(solaris_pending_finis): New variables.
* config/t-sol2 (sol2-c.o): Update dependencies.
(sol2.o): New rule.
* config/i386/i386.c (TARGET_INSERT_ATTRIBUTES): Define in terms of
SUBTARGET_INSERT_ATTRIBUTES.
(ix86_attribute_table): Include SUBTARGET_ATTRIBUTE_TABLE.
* config/i386/sol2.h (SUBTARGET_INSERT_ATTRIBUTES)
(SUBTARGET_ATTRIBUTE_TABLE, ASM_OUTPUT_CALL): Define.
* config/sparc/elf.h (ASM_DECLARE_FUNCTION_SIZE): Redefine.
* config/sparc/sp64-elf.h (ASM_DECLARE_FUNCTION_SIZE): Redefine.
* config/sparc/sol2.h (SUBTARGET_INSERT_ATTRIBUTES)
(SUBTARGET_ATTRIBUTE_TABLE, ASM_OUTPUT_CALL): Define.
* config/sparc/sparc.c (sparc_attribute_table): New.
(TARGET_INSERT_ATTRIBUTES): Define in terms of
SUBTARGET_INSERT_ATTRIBUTES.
(TARGET_ATTRIBUTE_TABLE): Define if SUBTARGET_ATTRIBUTE_TABLE
is defined.
* doc/extend.texi (Solaris Pragmas): New section.
From-SVN: r85155
2004-07-25 20:10:05 +02:00
|
|
|
@node Solaris Pragmas
|
|
|
|
@subsection Solaris Pragmas
|
|
|
|
|
|
|
|
The Solaris target supports @code{#pragma redefine_extname}
|
|
|
|
(@pxref{Symbol-Renaming Pragmas}). It also supports additional
|
|
|
|
@code{#pragma} directives for compatibility with the system compiler.
|
|
|
|
|
|
|
|
@table @code
|
|
|
|
@item align @var{alignment} (@var{variable} [, @var{variable}]...)
|
|
|
|
@cindex pragma, align
|
|
|
|
|
|
|
|
Increase the minimum alignment of each @var{variable} to @var{alignment}.
|
|
|
|
This is the same as GCC's @code{aligned} attribute @pxref{Variable
|
2004-11-24 00:25:40 +01:00
|
|
|
Attributes}). Macro expansion occurs on the arguments to this pragma
|
|
|
|
when compiling C and Objective-C. It does not currently occur when
|
|
|
|
compiling C++, but this is a bug which may be fixed in a future
|
|
|
|
release.
|
* config.gcc (i[34567]86-*-solaris2*, sparc64-*-solaris2*)
(sparc-*-solaris2*): Include sol2.o and sol2-protos.h.
* config/sol2-c.c: Include "tm.h", "tm_p.h", "toplev.h",
"cpplib.h", "c-pragma.h", "c-common.h".
(solaris_pragma_align, solaris_pragma_init, solaris_pragma_fini)
(solaris_register_pragmas): New functions.
* config/sol2-protos.h: New file.
* config/sol2.c: New file.
* config/sol2.h (SOLARIS_ATTRIBUTE_TABLE, ASM_DECLARE_FUNCTION_SIZE)
(REGISTER_TARGET_PRAGMAS): New macros.
(solaris_pending_aligns, solaris_pending_inits)
(solaris_pending_finis): New variables.
* config/t-sol2 (sol2-c.o): Update dependencies.
(sol2.o): New rule.
* config/i386/i386.c (TARGET_INSERT_ATTRIBUTES): Define in terms of
SUBTARGET_INSERT_ATTRIBUTES.
(ix86_attribute_table): Include SUBTARGET_ATTRIBUTE_TABLE.
* config/i386/sol2.h (SUBTARGET_INSERT_ATTRIBUTES)
(SUBTARGET_ATTRIBUTE_TABLE, ASM_OUTPUT_CALL): Define.
* config/sparc/elf.h (ASM_DECLARE_FUNCTION_SIZE): Redefine.
* config/sparc/sp64-elf.h (ASM_DECLARE_FUNCTION_SIZE): Redefine.
* config/sparc/sol2.h (SUBTARGET_INSERT_ATTRIBUTES)
(SUBTARGET_ATTRIBUTE_TABLE, ASM_OUTPUT_CALL): Define.
* config/sparc/sparc.c (sparc_attribute_table): New.
(TARGET_INSERT_ATTRIBUTES): Define in terms of
SUBTARGET_INSERT_ATTRIBUTES.
(TARGET_ATTRIBUTE_TABLE): Define if SUBTARGET_ATTRIBUTE_TABLE
is defined.
* doc/extend.texi (Solaris Pragmas): New section.
From-SVN: r85155
2004-07-25 20:10:05 +02:00
|
|
|
|
|
|
|
@item fini (@var{function} [, @var{function}]...)
|
|
|
|
@cindex pragma, fini
|
|
|
|
|
|
|
|
This pragma causes each listed @var{function} to be called after
|
|
|
|
main, or during shared module unloading, by adding a call to the
|
|
|
|
@code{.fini} section.
|
|
|
|
|
|
|
|
@item init (@var{function} [, @var{function}]...)
|
|
|
|
@cindex pragma, init
|
|
|
|
|
|
|
|
This pragma causes each listed @var{function} to be called during
|
|
|
|
initialization (before @code{main}) or during shared module loading, by
|
|
|
|
adding a call to the @code{.init} section.
|
|
|
|
|
|
|
|
@end table
|
|
|
|
|
2004-06-20 10:34:54 +02:00
|
|
|
@node Symbol-Renaming Pragmas
|
|
|
|
@subsection Symbol-Renaming Pragmas
|
2002-03-22 23:51:48 +01:00
|
|
|
|
2004-06-20 10:34:54 +02:00
|
|
|
For compatibility with the Solaris and Tru64 UNIX system headers, GCC
|
|
|
|
supports two @code{#pragma} directives which change the name used in
|
|
|
|
assembly for a given declaration. These pragmas are only available on
|
|
|
|
platforms whose system headers need them. To get this effect on all
|
|
|
|
platforms supported by GCC, use the asm labels extension (@pxref{Asm
|
|
|
|
Labels}).
|
2002-03-22 23:51:48 +01:00
|
|
|
|
|
|
|
@table @code
|
|
|
|
@item redefine_extname @var{oldname} @var{newname}
|
|
|
|
@cindex pragma, redefine_extname
|
|
|
|
|
2004-06-20 10:34:54 +02:00
|
|
|
This pragma gives the C function @var{oldname} the assembly symbol
|
|
|
|
@var{newname}. The preprocessor macro @code{__PRAGMA_REDEFINE_EXTNAME}
|
|
|
|
will be defined if this pragma is available (currently only on
|
|
|
|
Solaris).
|
2002-03-22 23:51:48 +01:00
|
|
|
|
|
|
|
@item extern_prefix @var{string}
|
|
|
|
@cindex pragma, extern_prefix
|
|
|
|
|
2004-06-20 10:34:54 +02:00
|
|
|
This pragma causes all subsequent external function and variable
|
|
|
|
declarations to have @var{string} prepended to their assembly symbols.
|
|
|
|
This effect may be terminated with another @code{extern_prefix} pragma
|
|
|
|
whose argument is an empty string. The preprocessor macro
|
|
|
|
@code{__PRAGMA_EXTERN_PREFIX} will be defined if this pragma is
|
c-tree.texi, [...]: Correct end-of-sentence markup and markup of "etc.", "e.g." and "i.e.".
* doc/c-tree.texi, doc/cfg.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/fragments.texi,
doc/frontends.texi, doc/gcov.texi, doc/hostconfig.texi,
doc/implement-c.texi, doc/install.texi, doc/invoke.texi,
doc/libgcc.texi, doc/md.texi, doc/passes.texi,
doc/portability.texi, doc/rtl.texi, doc/sourcebuild.texi,
doc/standards.texi, doc/tm.texi, doc/tree-ssa.texi,
doc/trouble.texi: Correct end-of-sentence markup and markup of
"etc.", "e.g." and "i.e.". Use @code in various places where
appropriate.
From-SVN: r90101
2004-11-05 02:36:57 +01:00
|
|
|
available (currently only on Tru64 UNIX)@.
|
2002-03-22 23:51:48 +01:00
|
|
|
@end table
|
|
|
|
|
2004-06-20 10:34:54 +02:00
|
|
|
These pragmas and the asm labels extension interact in a complicated
|
|
|
|
manner. Here are some corner cases you may want to be aware of.
|
|
|
|
|
|
|
|
@enumerate
|
|
|
|
@item Both pragmas silently apply only to declarations with external
|
|
|
|
linkage. Asm labels do not have this restriction.
|
|
|
|
|
|
|
|
@item In C++, both pragmas silently apply only to declarations with
|
|
|
|
``C'' linkage. Again, asm labels do not have this restriction.
|
|
|
|
|
|
|
|
@item If any of the three ways of changing the assembly name of a
|
|
|
|
declaration is applied to a declaration whose assembly name has
|
|
|
|
already been determined (either by a previous use of one of these
|
|
|
|
features, or because the compiler needed the assembly name in order to
|
|
|
|
generate code), and the new name is different, a warning issues and
|
|
|
|
the name does not change.
|
|
|
|
|
|
|
|
@item The @var{oldname} used by @code{#pragma redefine_extname} is
|
|
|
|
always the C-language name.
|
|
|
|
|
|
|
|
@item If @code{#pragma extern_prefix} is in effect, and a declaration
|
|
|
|
occurs with an asm label attached, the prefix is silently ignored for
|
|
|
|
that declaration.
|
|
|
|
|
|
|
|
@item If @code{#pragma extern_prefix} and @code{#pragma redefine_extname}
|
|
|
|
apply to the same declaration, whichever triggered first wins, and a
|
|
|
|
warning issues if they contradict each other. (We would like to have
|
|
|
|
@code{#pragma redefine_extname} always win, for consistency with asm
|
|
|
|
labels, but if @code{#pragma extern_prefix} triggers first we have no
|
|
|
|
way of knowing that that happened.)
|
|
|
|
@end enumerate
|
|
|
|
|
2004-09-03 19:22:40 +02:00
|
|
|
@node Structure-Packing Pragmas
|
|
|
|
@subsection Structure-Packing Pragmas
|
|
|
|
|
|
|
|
For compatibility with Win32, GCC supports as set of @code{#pragma}
|
|
|
|
directives which change the maximum alignment of members of structures,
|
|
|
|
unions, and classes subsequently defined. The @var{n} value below always
|
|
|
|
is required to be a small power of two and specifies the new alignment
|
|
|
|
in bytes.
|
|
|
|
|
|
|
|
@enumerate
|
|
|
|
@item @code{#pragma pack(@var{n})} simply sets the new alignment.
|
|
|
|
@item @code{#pragma pack()} sets the alignment to the one that was in
|
|
|
|
effect when compilation started (see also command line option
|
|
|
|
@option{-fpack-struct[=<n>]} @pxref{Code Gen Options}).
|
|
|
|
@item @code{#pragma pack(push[,@var{n}])} pushes the current alignment
|
|
|
|
setting on an internal stack and then optionally sets the new alignment.
|
|
|
|
@item @code{#pragma pack(pop)} restores the alignment setting to the one
|
|
|
|
saved at the top of the internal stack (and removes that stack entry).
|
|
|
|
Note that @code{#pragma pack([@var{n}])} does not influence this internal
|
|
|
|
stack; thus it is possible to have @code{#pragma pack(push)} followed by
|
|
|
|
multiple @code{#pragma pack(@var{n})} instances and finalized by a single
|
|
|
|
@code{#pragma pack(pop)}.
|
|
|
|
@end enumerate
|
|
|
|
|
2001-10-08 21:44:53 +02:00
|
|
|
@node Unnamed Fields
|
2004-09-24 22:29:55 +02:00
|
|
|
@section Unnamed struct/union fields within structs/unions
|
2001-10-08 21:44:53 +02:00
|
|
|
@cindex struct
|
|
|
|
@cindex union
|
|
|
|
|
|
|
|
For compatibility with other compilers, GCC allows you to define
|
|
|
|
a structure or union that contains, as fields, structures and unions
|
|
|
|
without names. For example:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2001-10-08 21:44:53 +02:00
|
|
|
struct @{
|
|
|
|
int a;
|
|
|
|
union @{
|
|
|
|
int b;
|
|
|
|
float c;
|
|
|
|
@};
|
|
|
|
int d;
|
|
|
|
@} foo;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2001-10-08 21:44:53 +02:00
|
|
|
|
|
|
|
In this example, the user would be able to access members of the unnamed
|
|
|
|
union with code like @samp{foo.b}. Note that only unnamed structs and
|
|
|
|
unions are allowed, you may not have, for example, an unnamed
|
|
|
|
@code{int}.
|
|
|
|
|
|
|
|
You must never create such structures that cause ambiguous field definitions.
|
|
|
|
For example, this structure:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2001-10-08 21:44:53 +02:00
|
|
|
struct @{
|
|
|
|
int a;
|
|
|
|
struct @{
|
|
|
|
int a;
|
|
|
|
@};
|
|
|
|
@} foo;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2001-10-08 21:44:53 +02:00
|
|
|
|
|
|
|
It is ambiguous which @code{a} is being referred to with @samp{foo.a}.
|
|
|
|
Such constructs are not supported and must be avoided. In the future,
|
|
|
|
such constructs may be detected and treated as compilation errors.
|
|
|
|
|
2004-09-24 22:29:55 +02:00
|
|
|
@opindex fms-extensions
|
|
|
|
Unless @option{-fms-extensions} is used, the unnamed field must be a
|
|
|
|
structure or union definition without a tag (for example, @samp{struct
|
|
|
|
@{ int a; @};}). If @option{-fms-extensions} is used, the field may
|
|
|
|
also be a definition with a tag such as @samp{struct foo @{ int a;
|
|
|
|
@};}, a reference to a previously defined structure or union such as
|
|
|
|
@samp{struct foo;}, or a reference to a @code{typedef} name for a
|
|
|
|
previously defined structure or union type.
|
|
|
|
|
2002-05-22 03:11:29 +02:00
|
|
|
@node Thread-Local
|
|
|
|
@section Thread-Local Storage
|
|
|
|
@cindex Thread-Local Storage
|
2002-05-23 10:21:36 +02:00
|
|
|
@cindex @acronym{TLS}
|
2002-05-22 03:11:29 +02:00
|
|
|
@cindex __thread
|
|
|
|
|
2002-05-23 10:21:36 +02:00
|
|
|
Thread-local storage (@acronym{TLS}) is a mechanism by which variables
|
|
|
|
are allocated such that there is one instance of the variable per extant
|
2002-05-22 03:11:29 +02:00
|
|
|
thread. The run-time model GCC uses to implement this originates
|
|
|
|
in the IA-64 processor-specific ABI, but has since been migrated
|
|
|
|
to other processors as well. It requires significant support from
|
|
|
|
the linker (@command{ld}), dynamic linker (@command{ld.so}), and
|
|
|
|
system libraries (@file{libc.so} and @file{libpthread.so}), so it
|
2002-05-23 10:21:36 +02:00
|
|
|
is not available everywhere.
|
2002-05-22 03:11:29 +02:00
|
|
|
|
|
|
|
At the user level, the extension is visible with a new storage
|
|
|
|
class keyword: @code{__thread}. For example:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
2002-05-22 03:11:29 +02:00
|
|
|
__thread int i;
|
|
|
|
extern __thread struct state s;
|
|
|
|
static __thread char *p;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
2002-05-22 03:11:29 +02:00
|
|
|
|
|
|
|
The @code{__thread} specifier may be used alone, with the @code{extern}
|
|
|
|
or @code{static} specifiers, but with no other storage class specifier.
|
|
|
|
When used with @code{extern} or @code{static}, @code{__thread} must appear
|
|
|
|
immediately after the other storage class specifier.
|
|
|
|
|
|
|
|
The @code{__thread} specifier may be applied to any global, file-scoped
|
2002-05-23 23:00:49 +02:00
|
|
|
static, function-scoped static, or static data member of a class. It may
|
|
|
|
not be applied to block-scoped automatic or non-static data member.
|
2002-05-22 03:11:29 +02:00
|
|
|
|
|
|
|
When the address-of operator is applied to a thread-local variable, it is
|
|
|
|
evaluated at run-time and returns the address of the current thread's
|
|
|
|
instance of that variable. An address so obtained may be used by any
|
|
|
|
thread. When a thread terminates, any pointers to thread-local variables
|
|
|
|
in that thread become invalid.
|
|
|
|
|
|
|
|
No static initialization may refer to the address of a thread-local variable.
|
|
|
|
|
2002-05-23 23:00:49 +02:00
|
|
|
In C++, if an initializer is present for a thread-local variable, it must
|
|
|
|
be a @var{constant-expression}, as defined in 5.19.2 of the ANSI/ISO C++
|
|
|
|
standard.
|
2002-05-22 03:11:29 +02:00
|
|
|
|
|
|
|
See @uref{http://people.redhat.com/drepper/tls.pdf,
|
|
|
|
ELF Handling For Thread-Local Storage} for a detailed explanation of
|
|
|
|
the four thread-local storage addressing models, and how the run-time
|
|
|
|
is expected to function.
|
|
|
|
|
2002-05-23 10:21:36 +02:00
|
|
|
@menu
|
|
|
|
* C99 Thread-Local Edits::
|
|
|
|
* C++98 Thread-Local Edits::
|
|
|
|
@end menu
|
|
|
|
|
|
|
|
@node C99 Thread-Local Edits
|
|
|
|
@subsection ISO/IEC 9899:1999 Edits for Thread-Local Storage
|
|
|
|
|
|
|
|
The following are a set of changes to ISO/IEC 9899:1999 (aka C99)
|
|
|
|
that document the exact semantics of the language extension.
|
|
|
|
|
|
|
|
@itemize @bullet
|
|
|
|
@item
|
|
|
|
@cite{5.1.2 Execution environments}
|
|
|
|
|
|
|
|
Add new text after paragraph 1
|
|
|
|
|
|
|
|
@quotation
|
|
|
|
Within either execution environment, a @dfn{thread} is a flow of
|
|
|
|
control within a program. It is implementation defined whether
|
|
|
|
or not there may be more than one thread associated with a program.
|
|
|
|
It is implementation defined how threads beyond the first are
|
|
|
|
created, the name and type of the function called at thread
|
|
|
|
startup, and how threads may be terminated. However, objects
|
|
|
|
with thread storage duration shall be initialized before thread
|
|
|
|
startup.
|
|
|
|
@end quotation
|
|
|
|
|
|
|
|
@item
|
|
|
|
@cite{6.2.4 Storage durations of objects}
|
|
|
|
|
|
|
|
Add new text before paragraph 3
|
|
|
|
|
|
|
|
@quotation
|
|
|
|
An object whose identifier is declared with the storage-class
|
|
|
|
specifier @w{@code{__thread}} has @dfn{thread storage duration}.
|
|
|
|
Its lifetime is the entire execution of the thread, and its
|
|
|
|
stored value is initialized only once, prior to thread startup.
|
|
|
|
@end quotation
|
|
|
|
|
|
|
|
@item
|
|
|
|
@cite{6.4.1 Keywords}
|
|
|
|
|
|
|
|
Add @code{__thread}.
|
|
|
|
|
|
|
|
@item
|
|
|
|
@cite{6.7.1 Storage-class specifiers}
|
|
|
|
|
|
|
|
Add @code{__thread} to the list of storage class specifiers in
|
|
|
|
paragraph 1.
|
|
|
|
|
|
|
|
Change paragraph 2 to
|
|
|
|
|
|
|
|
@quotation
|
|
|
|
With the exception of @code{__thread}, at most one storage-class
|
|
|
|
specifier may be given [@dots{}]. The @code{__thread} specifier may
|
|
|
|
be used alone, or immediately following @code{extern} or
|
|
|
|
@code{static}.
|
|
|
|
@end quotation
|
|
|
|
|
|
|
|
Add new text after paragraph 6
|
|
|
|
|
|
|
|
@quotation
|
|
|
|
The declaration of an identifier for a variable that has
|
|
|
|
block scope that specifies @code{__thread} shall also
|
|
|
|
specify either @code{extern} or @code{static}.
|
|
|
|
|
|
|
|
The @code{__thread} specifier shall be used only with
|
|
|
|
variables.
|
|
|
|
@end quotation
|
|
|
|
@end itemize
|
|
|
|
|
|
|
|
@node C++98 Thread-Local Edits
|
|
|
|
@subsection ISO/IEC 14882:1998 Edits for Thread-Local Storage
|
|
|
|
|
|
|
|
The following are a set of changes to ISO/IEC 14882:1998 (aka C++98)
|
|
|
|
that document the exact semantics of the language extension.
|
|
|
|
|
|
|
|
@itemize @bullet
|
2003-02-10 01:24:44 +01:00
|
|
|
@item
|
2002-05-23 10:21:36 +02:00
|
|
|
@b{[intro.execution]}
|
|
|
|
|
|
|
|
New text after paragraph 4
|
|
|
|
|
|
|
|
@quotation
|
|
|
|
A @dfn{thread} is a flow of control within the abstract machine.
|
|
|
|
It is implementation defined whether or not there may be more than
|
|
|
|
one thread.
|
|
|
|
@end quotation
|
|
|
|
|
|
|
|
New text after paragraph 7
|
|
|
|
|
|
|
|
@quotation
|
2002-06-10 21:12:10 +02:00
|
|
|
It is unspecified whether additional action must be taken to
|
2002-05-23 10:21:36 +02:00
|
|
|
ensure when and whether side effects are visible to other threads.
|
|
|
|
@end quotation
|
|
|
|
|
|
|
|
@item
|
|
|
|
@b{[lex.key]}
|
|
|
|
|
|
|
|
Add @code{__thread}.
|
|
|
|
|
|
|
|
@item
|
|
|
|
@b{[basic.start.main]}
|
|
|
|
|
|
|
|
Add after paragraph 5
|
|
|
|
|
|
|
|
@quotation
|
|
|
|
The thread that begins execution at the @code{main} function is called
|
2002-06-10 21:12:10 +02:00
|
|
|
the @dfn{main thread}. It is implementation defined how functions
|
2002-05-23 10:21:36 +02:00
|
|
|
beginning threads other than the main thread are designated or typed.
|
|
|
|
A function so designated, as well as the @code{main} function, is called
|
|
|
|
a @dfn{thread startup function}. It is implementation defined what
|
|
|
|
happens if a thread startup function returns. It is implementation
|
|
|
|
defined what happens to other threads when any thread calls @code{exit}.
|
|
|
|
@end quotation
|
|
|
|
|
|
|
|
@item
|
|
|
|
@b{[basic.start.init]}
|
|
|
|
|
|
|
|
Add after paragraph 4
|
|
|
|
|
|
|
|
@quotation
|
|
|
|
The storage for an object of thread storage duration shall be
|
2002-12-17 17:47:45 +01:00
|
|
|
statically initialized before the first statement of the thread startup
|
2002-05-23 10:21:36 +02:00
|
|
|
function. An object of thread storage duration shall not require
|
|
|
|
dynamic initialization.
|
|
|
|
@end quotation
|
|
|
|
|
|
|
|
@item
|
|
|
|
@b{[basic.start.term]}
|
|
|
|
|
|
|
|
Add after paragraph 3
|
|
|
|
|
|
|
|
@quotation
|
2002-05-23 23:00:49 +02:00
|
|
|
The type of an object with thread storage duration shall not have a
|
|
|
|
non-trivial destructor, nor shall it be an array type whose elements
|
|
|
|
(directly or indirectly) have non-trivial destructors.
|
2002-05-23 10:21:36 +02:00
|
|
|
@end quotation
|
|
|
|
|
|
|
|
@item
|
|
|
|
@b{[basic.stc]}
|
|
|
|
|
|
|
|
Add ``thread storage duration'' to the list in paragraph 1.
|
|
|
|
|
|
|
|
Change paragraph 2
|
|
|
|
|
|
|
|
@quotation
|
|
|
|
Thread, static, and automatic storage durations are associated with
|
|
|
|
objects introduced by declarations [@dots{}].
|
|
|
|
@end quotation
|
|
|
|
|
|
|
|
Add @code{__thread} to the list of specifiers in paragraph 3.
|
|
|
|
|
|
|
|
@item
|
|
|
|
@b{[basic.stc.thread]}
|
|
|
|
|
|
|
|
New section before @b{[basic.stc.static]}
|
|
|
|
|
|
|
|
@quotation
|
2003-06-23 18:01:42 +02:00
|
|
|
The keyword @code{__thread} applied to a non-local object gives the
|
2002-05-23 10:21:36 +02:00
|
|
|
object thread storage duration.
|
|
|
|
|
|
|
|
A local variable or class data member declared both @code{static}
|
|
|
|
and @code{__thread} gives the variable or member thread storage
|
|
|
|
duration.
|
|
|
|
@end quotation
|
|
|
|
|
|
|
|
@item
|
|
|
|
@b{[basic.stc.static]}
|
|
|
|
|
|
|
|
Change paragraph 1
|
|
|
|
|
|
|
|
@quotation
|
|
|
|
All objects which have neither thread storage duration, dynamic
|
|
|
|
storage duration nor are local [@dots{}].
|
|
|
|
@end quotation
|
|
|
|
|
|
|
|
@item
|
|
|
|
@b{[dcl.stc]}
|
|
|
|
|
|
|
|
Add @code{__thread} to the list in paragraph 1.
|
|
|
|
|
|
|
|
Change paragraph 1
|
|
|
|
|
|
|
|
@quotation
|
|
|
|
With the exception of @code{__thread}, at most one
|
|
|
|
@var{storage-class-specifier} shall appear in a given
|
|
|
|
@var{decl-specifier-seq}. The @code{__thread} specifier may
|
|
|
|
be used alone, or immediately following the @code{extern} or
|
|
|
|
@code{static} specifiers. [@dots{}]
|
|
|
|
@end quotation
|
|
|
|
|
|
|
|
Add after paragraph 5
|
|
|
|
|
|
|
|
@quotation
|
|
|
|
The @code{__thread} specifier can be applied only to the names of objects
|
|
|
|
and to anonymous unions.
|
|
|
|
@end quotation
|
|
|
|
|
|
|
|
@item
|
|
|
|
@b{[class.mem]}
|
|
|
|
|
|
|
|
Add after paragraph 6
|
|
|
|
|
|
|
|
@quotation
|
|
|
|
Non-@code{static} members shall not be @code{__thread}.
|
|
|
|
@end quotation
|
|
|
|
@end itemize
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@node C++ Extensions
|
|
|
|
@chapter Extensions to the C++ Language
|
|
|
|
@cindex extensions, C++ language
|
|
|
|
@cindex C++ language extensions
|
|
|
|
|
|
|
|
The GNU compiler provides these extensions to the C++ language (and you
|
|
|
|
can also use most of the C language extensions in your C++ programs). If you
|
|
|
|
want to write code that checks whether these features are available, you can
|
|
|
|
test for the GNU compiler the same way as for C programs: check for a
|
|
|
|
predefined macro @code{__GNUC__}. You can also use @code{__GNUG__} to
|
2003-10-04 12:53:09 +02:00
|
|
|
test specifically for GNU C++ (@pxref{Common Predefined Macros,,
|
|
|
|
Predefined Macros,cpp,The GNU C Preprocessor}).
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@menu
|
|
|
|
* Min and Max:: C++ Minimum and maximum operators.
|
1999-09-09 14:07:46 +02:00
|
|
|
* Volatiles:: What constitutes an access to a volatile object.
|
2000-07-17 11:39:37 +02:00
|
|
|
* Restricted Pointers:: C99 restricted pointers and references.
|
2001-05-21 17:41:05 +02:00
|
|
|
* Vague Linkage:: Where G++ puts inlines, vtables and such.
|
1996-09-24 00:41:16 +02:00
|
|
|
* C++ Interface:: You can use a single C++ header file for both
|
2001-01-12 18:07:51 +01:00
|
|
|
declarations and definitions.
|
1996-09-24 00:41:16 +02:00
|
|
|
* Template Instantiation:: Methods for ensuring that exactly one copy of
|
2001-01-12 18:07:51 +01:00
|
|
|
each needed template instantiation is emitted.
|
1999-01-04 12:56:18 +01:00
|
|
|
* Bound member functions:: You can extract a function pointer to the
|
|
|
|
method denoted by a @samp{->*} or @samp{.*} expression.
|
2001-01-12 18:07:51 +01:00
|
|
|
* C++ Attributes:: Variable, function, and type attributes for C++ only.
|
2003-11-11 23:27:32 +01:00
|
|
|
* Strong Using:: Strong using-directives for namespace composition.
|
2001-05-13 03:28:18 +02:00
|
|
|
* Java Exceptions:: Tweaking exception handling to work with Java.
|
2003-07-27 18:57:18 +02:00
|
|
|
* Deprecated Features:: Things will disappear from g++.
|
2001-01-12 18:07:51 +01:00
|
|
|
* Backwards Compatibility:: Compatibilities with earlier definitions of C++.
|
1996-09-24 00:41:16 +02:00
|
|
|
@end menu
|
|
|
|
|
|
|
|
@node Min and Max
|
|
|
|
@section Minimum and Maximum Operators in C++
|
|
|
|
|
|
|
|
It is very convenient to have operators which return the ``minimum'' or the
|
|
|
|
``maximum'' of two arguments. In GNU C++ (but not in GNU C),
|
|
|
|
|
|
|
|
@table @code
|
|
|
|
@item @var{a} <? @var{b}
|
|
|
|
@findex <?
|
|
|
|
@cindex minimum operator
|
|
|
|
is the @dfn{minimum}, returning the smaller of the numeric values
|
|
|
|
@var{a} and @var{b};
|
|
|
|
|
|
|
|
@item @var{a} >? @var{b}
|
|
|
|
@findex >?
|
|
|
|
@cindex maximum operator
|
|
|
|
is the @dfn{maximum}, returning the larger of the numeric values @var{a}
|
|
|
|
and @var{b}.
|
|
|
|
@end table
|
|
|
|
|
|
|
|
These operations are not primitive in ordinary C++, since you can
|
|
|
|
use a macro to return the minimum of two things in C++, as in the
|
|
|
|
following example.
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
#define MIN(X,Y) ((X) < (Y) ? : (X) : (Y))
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
You might then use @w{@samp{int min = MIN (i, j);}} to set @var{min} to
|
|
|
|
the minimum value of variables @var{i} and @var{j}.
|
|
|
|
|
|
|
|
However, side effects in @code{X} or @code{Y} may cause unintended
|
|
|
|
behavior. For example, @code{MIN (i++, j++)} will fail, incrementing
|
2002-10-09 23:27:38 +02:00
|
|
|
the smaller counter twice. The GNU C @code{typeof} extension allows you
|
|
|
|
to write safe macros that avoid this kind of problem (@pxref{Typeof}).
|
|
|
|
However, writing @code{MIN} and @code{MAX} as macros also forces you to
|
|
|
|
use function-call notation for a fundamental arithmetic operation.
|
|
|
|
Using GNU C++ extensions, you can write @w{@samp{int min = i <? j;}}
|
|
|
|
instead.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
Since @code{<?} and @code{>?} are built into the compiler, they properly
|
|
|
|
handle expressions with side-effects; @w{@samp{int min = i++ <? j++;}}
|
|
|
|
works correctly.
|
|
|
|
|
1999-09-09 14:07:46 +02:00
|
|
|
@node Volatiles
|
|
|
|
@section When is a Volatile Object Accessed?
|
|
|
|
@cindex accessing volatiles
|
|
|
|
@cindex volatile read
|
|
|
|
@cindex volatile write
|
|
|
|
@cindex volatile access
|
|
|
|
|
2001-06-27 00:47:11 +02:00
|
|
|
Both the C and C++ standard have the concept of volatile objects. These
|
|
|
|
are normally accessed by pointers and used for accessing hardware. The
|
2000-08-11 15:42:32 +02:00
|
|
|
standards encourage compilers to refrain from optimizations
|
1999-09-09 14:07:46 +02:00
|
|
|
concerning accesses to volatile objects that it might perform on
|
2001-06-27 00:47:11 +02:00
|
|
|
non-volatile objects. The C standard leaves it implementation defined
|
|
|
|
as to what constitutes a volatile access. The C++ standard omits to
|
1999-09-09 14:07:46 +02:00
|
|
|
specify this, except to say that C++ should behave in a similar manner
|
2001-06-27 00:47:11 +02:00
|
|
|
to C with respect to volatiles, where possible. The minimum either
|
2000-08-11 15:42:32 +02:00
|
|
|
standard specifies is that at a sequence point all previous accesses to
|
1999-09-09 14:07:46 +02:00
|
|
|
volatile objects have stabilized and no subsequent accesses have
|
2001-06-27 00:47:11 +02:00
|
|
|
occurred. Thus an implementation is free to reorder and combine
|
1999-09-09 14:07:46 +02:00
|
|
|
volatile accesses which occur between sequence points, but cannot do so
|
2001-06-27 00:47:11 +02:00
|
|
|
for accesses across a sequence point. The use of volatiles does not
|
1999-09-09 14:07:46 +02:00
|
|
|
allow you to violate the restriction on updating objects multiple times
|
|
|
|
within a sequence point.
|
|
|
|
|
|
|
|
In most expressions, it is intuitively obvious what is a read and what is
|
2001-06-27 00:47:11 +02:00
|
|
|
a write. For instance
|
1999-09-09 14:07:46 +02:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
c-tree.texi, [...]: Fix spelling and typos.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/install.texi, doc/invoke.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi: Fix spelling and typos.
Consistently use "built-in" and "bit-field". Minor logical markup
improvements.
* doc/gcc.1: Regenerate.
From-SVN: r43383
2001-06-15 00:51:18 +02:00
|
|
|
volatile int *dst = @var{somevalue};
|
|
|
|
volatile int *src = @var{someothervalue};
|
1999-09-09 14:07:46 +02:00
|
|
|
*dst = *src;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1999-09-09 14:07:46 +02:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
will cause a read of the volatile object pointed to by @var{src} and stores the
|
2001-06-27 00:47:11 +02:00
|
|
|
value into the volatile object pointed to by @var{dst}. There is no
|
1999-09-09 14:07:46 +02:00
|
|
|
guarantee that these reads and writes are atomic, especially for objects
|
|
|
|
larger than @code{int}.
|
|
|
|
|
|
|
|
Less obvious expressions are where something which looks like an access
|
2001-06-27 00:47:11 +02:00
|
|
|
is used in a void context. An example would be,
|
1999-09-09 14:07:46 +02:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
c-tree.texi, [...]: Fix spelling and typos.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/install.texi, doc/invoke.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi: Fix spelling and typos.
Consistently use "built-in" and "bit-field". Minor logical markup
improvements.
* doc/gcc.1: Regenerate.
From-SVN: r43383
2001-06-15 00:51:18 +02:00
|
|
|
volatile int *src = @var{somevalue};
|
1999-09-09 14:07:46 +02:00
|
|
|
*src;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1999-09-09 14:07:46 +02:00
|
|
|
|
|
|
|
With C, such expressions are rvalues, and as rvalues cause a read of
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
the object, GCC interprets this as a read of the volatile being pointed
|
2001-06-27 00:47:11 +02:00
|
|
|
to. The C++ standard specifies that such expressions do not undergo
|
1999-09-09 14:07:46 +02:00
|
|
|
lvalue to rvalue conversion, and that the type of the dereferenced
|
2001-06-27 00:47:11 +02:00
|
|
|
object may be incomplete. The C++ standard does not specify explicitly
|
1999-09-09 14:07:46 +02:00
|
|
|
that it is this lvalue to rvalue conversion which is responsible for
|
2001-06-27 00:47:11 +02:00
|
|
|
causing an access. However, there is reason to believe that it is,
|
|
|
|
because otherwise certain simple expressions become undefined. However,
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
because it would surprise most programmers, G++ treats dereferencing a
|
1999-09-09 14:07:46 +02:00
|
|
|
pointer to volatile object of complete type in a void context as a read
|
2001-06-27 00:47:11 +02:00
|
|
|
of the object. When the object has incomplete type, G++ issues a
|
1999-09-09 14:07:46 +02:00
|
|
|
warning.
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1999-09-09 14:07:46 +02:00
|
|
|
struct S;
|
|
|
|
struct T @{int m;@};
|
c-tree.texi, [...]: Fix spelling and typos.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/install.texi, doc/invoke.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi: Fix spelling and typos.
Consistently use "built-in" and "bit-field". Minor logical markup
improvements.
* doc/gcc.1: Regenerate.
From-SVN: r43383
2001-06-15 00:51:18 +02:00
|
|
|
volatile S *ptr1 = @var{somevalue};
|
|
|
|
volatile T *ptr2 = @var{somevalue};
|
1999-09-09 14:07:46 +02:00
|
|
|
*ptr1;
|
|
|
|
*ptr2;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1999-09-09 14:07:46 +02:00
|
|
|
|
|
|
|
In this example, a warning is issued for @code{*ptr1}, and @code{*ptr2}
|
2001-06-27 00:47:11 +02:00
|
|
|
causes a read of the object pointed to. If you wish to force an error on
|
1999-09-09 14:07:46 +02:00
|
|
|
the first case, you must force a conversion to rvalue with, for instance
|
|
|
|
a static cast, @code{static_cast<S>(*ptr1)}.
|
|
|
|
|
c-tree.texi, [...]: Be more consistent about the use of "GCC" and related terms.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install.texi, doc/invoke.texi,
doc/md.texi, doc/rtl.texi, doc/tm.texi: Be more consistent about
the use of "GCC" and related terms.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43547
2001-06-25 02:21:28 +02:00
|
|
|
When using a reference to volatile, G++ does not treat equivalent
|
1999-09-09 14:07:46 +02:00
|
|
|
expressions as accesses to volatiles, but instead issues a warning that
|
2001-06-27 00:47:11 +02:00
|
|
|
no volatile is accessed. The rationale for this is that otherwise it
|
1999-09-09 14:07:46 +02:00
|
|
|
becomes difficult to determine where volatile access occur, and not
|
|
|
|
possible to ignore the return value from functions returning volatile
|
2001-06-27 00:47:11 +02:00
|
|
|
references. Again, if you wish to force a read, cast the reference to
|
1999-09-09 14:07:46 +02:00
|
|
|
an rvalue.
|
|
|
|
|
1999-11-19 14:03:00 +01:00
|
|
|
@node Restricted Pointers
|
|
|
|
@section Restricting Pointer Aliasing
|
|
|
|
@cindex restricted pointers
|
|
|
|
@cindex restricted references
|
|
|
|
@cindex restricted this pointer
|
|
|
|
|
contrib.texi, [...]: Capitalize "gcc", "g++" and "g77" or mark up with appropriate markup.
* doc/contrib.texi, doc/extend.texi, doc/gcov.texi,
doc/install.texi, doc/invoke.texi, doc/makefile.texi,
doc/sourcebuild.texi, doc/tm.texi, doc/trouble.texi: Capitalize
"gcc", "g++" and "g77" or mark up with appropriate markup. Adjust
wording and grammar.
From-SVN: r79482
2004-03-14 23:29:38 +01:00
|
|
|
As with the C front end, G++ understands the C99 feature of restricted pointers,
|
1999-11-19 14:03:00 +01:00
|
|
|
specified with the @code{__restrict__}, or @code{__restrict} type
|
2001-06-27 00:47:11 +02:00
|
|
|
qualifier. Because you cannot compile C++ by specifying the @option{-std=c99}
|
1999-11-19 14:03:00 +01:00
|
|
|
language flag, @code{restrict} is not a keyword in C++.
|
|
|
|
|
|
|
|
In addition to allowing restricted pointers, you can specify restricted
|
|
|
|
references, which indicate that the reference is not aliased in the local
|
|
|
|
context.
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1999-11-19 14:03:00 +01:00
|
|
|
void fn (int *__restrict__ rptr, int &__restrict__ rref)
|
|
|
|
@{
|
2002-06-24 19:21:04 +02:00
|
|
|
/* @r{@dots{}} */
|
1999-11-19 14:03:00 +01:00
|
|
|
@}
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1999-11-19 14:03:00 +01:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
In the body of @code{fn}, @var{rptr} points to an unaliased integer and
|
|
|
|
@var{rref} refers to a (different) unaliased integer.
|
|
|
|
|
|
|
|
You may also specify whether a member function's @var{this} pointer is
|
|
|
|
unaliased by using @code{__restrict__} as a member function qualifier.
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1999-11-19 14:03:00 +01:00
|
|
|
void T::fn () __restrict__
|
|
|
|
@{
|
2002-06-24 19:21:04 +02:00
|
|
|
/* @r{@dots{}} */
|
1999-11-19 14:03:00 +01:00
|
|
|
@}
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1999-11-19 14:03:00 +01:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
Within the body of @code{T::fn}, @var{this} will have the effective
|
2001-06-27 00:47:11 +02:00
|
|
|
definition @code{T *__restrict__ const this}. Notice that the
|
1999-11-19 14:03:00 +01:00
|
|
|
interpretation of a @code{__restrict__} member function qualifier is
|
|
|
|
different to that of @code{const} or @code{volatile} qualifier, in that it
|
2001-06-27 00:47:11 +02:00
|
|
|
is applied to the pointer rather than the object. This is consistent with
|
1999-11-19 14:03:00 +01:00
|
|
|
other compilers which implement restricted pointers.
|
|
|
|
|
|
|
|
As with all outermost parameter qualifiers, @code{__restrict__} is
|
2001-06-27 00:47:11 +02:00
|
|
|
ignored in function definition matching. This means you only need to
|
1999-11-19 14:03:00 +01:00
|
|
|
specify @code{__restrict__} in a function definition, rather than
|
|
|
|
in a function prototype as well.
|
|
|
|
|
2001-05-21 17:41:05 +02:00
|
|
|
@node Vague Linkage
|
|
|
|
@section Vague Linkage
|
|
|
|
@cindex vague linkage
|
|
|
|
|
|
|
|
There are several constructs in C++ which require space in the object
|
|
|
|
file but are not clearly tied to a single translation unit. We say that
|
|
|
|
these constructs have ``vague linkage''. Typically such constructs are
|
|
|
|
emitted wherever they are needed, though sometimes we can be more
|
|
|
|
clever.
|
|
|
|
|
|
|
|
@table @asis
|
|
|
|
@item Inline Functions
|
|
|
|
Inline functions are typically defined in a header file which can be
|
|
|
|
included in many different compilations. Hopefully they can usually be
|
|
|
|
inlined, but sometimes an out-of-line copy is necessary, if the address
|
|
|
|
of the function is taken or if inlining fails. In general, we emit an
|
|
|
|
out-of-line copy in all translation units where one is needed. As an
|
|
|
|
exception, we only emit inline virtual functions with the vtable, since
|
|
|
|
it will always require a copy.
|
|
|
|
|
|
|
|
Local static variables and string constants used in an inline function
|
|
|
|
are also considered to have vague linkage, since they must be shared
|
|
|
|
between all inlined and out-of-line instances of the function.
|
|
|
|
|
|
|
|
@item VTables
|
|
|
|
@cindex vtable
|
|
|
|
C++ virtual functions are implemented in most compilers using a lookup
|
|
|
|
table, known as a vtable. The vtable contains pointers to the virtual
|
|
|
|
functions provided by a class, and each object of the class contains a
|
|
|
|
pointer to its vtable (or vtables, in some multiple-inheritance
|
|
|
|
situations). If the class declares any non-inline, non-pure virtual
|
|
|
|
functions, the first one is chosen as the ``key method'' for the class,
|
|
|
|
and the vtable is only emitted in the translation unit where the key
|
|
|
|
method is defined.
|
|
|
|
|
|
|
|
@emph{Note:} If the chosen key method is later defined as inline, the
|
|
|
|
vtable will still be emitted in every translation unit which defines it.
|
|
|
|
Make sure that any inline virtuals are declared inline in the class
|
|
|
|
body, even if they are not defined there.
|
|
|
|
|
|
|
|
@item type_info objects
|
|
|
|
@cindex type_info
|
|
|
|
@cindex RTTI
|
|
|
|
C++ requires information about types to be written out in order to
|
|
|
|
implement @samp{dynamic_cast}, @samp{typeid} and exception handling.
|
|
|
|
For polymorphic classes (classes with virtual functions), the type_info
|
|
|
|
object is written out along with the vtable so that @samp{dynamic_cast}
|
|
|
|
can determine the dynamic type of a class object at runtime. For all
|
|
|
|
other types, we write out the type_info object when it is used: when
|
|
|
|
applying @samp{typeid} to an expression, throwing an object, or
|
|
|
|
referring to a type in a catch clause or exception specification.
|
|
|
|
|
|
|
|
@item Template Instantiations
|
|
|
|
Most everything in this section also applies to template instantiations,
|
|
|
|
but there are other options as well.
|
|
|
|
@xref{Template Instantiation,,Where's the Template?}.
|
|
|
|
|
|
|
|
@end table
|
|
|
|
|
|
|
|
When used with GNU ld version 2.8 or later on an ELF system such as
|
2004-01-18 03:10:34 +01:00
|
|
|
GNU/Linux or Solaris 2, or on Microsoft Windows, duplicate copies of
|
2001-05-21 17:41:05 +02:00
|
|
|
these constructs will be discarded at link time. This is known as
|
|
|
|
COMDAT support.
|
|
|
|
|
|
|
|
On targets that don't support COMDAT, but do support weak symbols, GCC
|
|
|
|
will use them. This way one copy will override all the others, but
|
|
|
|
the unused copies will still take up space in the executable.
|
|
|
|
|
|
|
|
For targets which do not support either COMDAT or weak symbols,
|
|
|
|
most entities with vague linkage will be emitted as local symbols to
|
|
|
|
avoid duplicate definition errors from the linker. This will not happen
|
|
|
|
for local statics in inlines, however, as having multiple copies will
|
|
|
|
almost certainly break things.
|
|
|
|
|
|
|
|
@xref{C++ Interface,,Declarations and Definitions in One Header}, for
|
|
|
|
another way to control placement of these constructs.
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@node C++ Interface
|
2004-07-07 19:38:40 +02:00
|
|
|
@section #pragma interface and implementation
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@cindex interface and implementation headers, C++
|
|
|
|
@cindex C++ interface and implementation headers
|
|
|
|
@cindex pragmas, interface and implementation
|
|
|
|
|
2004-07-07 19:38:40 +02:00
|
|
|
@code{#pragma interface} and @code{#pragma implementation} provide the
|
|
|
|
user with a way of explicitly directing the compiler to emit entities
|
|
|
|
with vague linkage (and debugging information) in a particular
|
|
|
|
translation unit.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2004-07-07 19:38:40 +02:00
|
|
|
@emph{Note:} As of GCC 2.7.2, these @code{#pragma}s are not useful in
|
|
|
|
most cases, because of COMDAT support and the ``key method'' heuristic
|
|
|
|
mentioned in @ref{Vague Linkage}. Using them can actually cause your
|
2004-09-10 13:26:25 +02:00
|
|
|
program to grow due to unnecessary out-of-line copies of inline
|
2004-07-07 19:38:40 +02:00
|
|
|
functions. Currently (3.4) the only benefit of these
|
|
|
|
@code{#pragma}s is reduced duplication of debugging information, and
|
|
|
|
that should be addressed soon on DWARF 2 targets with the use of
|
|
|
|
COMDAT groups.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@table @code
|
|
|
|
@item #pragma interface
|
|
|
|
@itemx #pragma interface "@var{subdir}/@var{objects}.h"
|
|
|
|
@kindex #pragma interface
|
|
|
|
Use this directive in @emph{header files} that define object classes, to save
|
|
|
|
space in most of the object files that use those classes. Normally,
|
|
|
|
local copies of certain information (backup copies of inline member
|
|
|
|
functions, debugging information, and the internal tables that implement
|
|
|
|
virtual functions) must be kept in each object file that includes class
|
|
|
|
definitions. You can use this pragma to avoid such duplication. When a
|
|
|
|
header file containing @samp{#pragma interface} is included in a
|
|
|
|
compilation, this auxiliary information will not be generated (unless
|
|
|
|
the main input source file itself uses @samp{#pragma implementation}).
|
|
|
|
Instead, the object files will contain references to be resolved at link
|
|
|
|
time.
|
|
|
|
|
|
|
|
The second form of this directive is useful for the case where you have
|
|
|
|
multiple headers with the same name in different directories. If you
|
|
|
|
use this form, you must specify the same string to @samp{#pragma
|
|
|
|
implementation}.
|
|
|
|
|
|
|
|
@item #pragma implementation
|
|
|
|
@itemx #pragma implementation "@var{objects}.h"
|
|
|
|
@kindex #pragma implementation
|
|
|
|
Use this pragma in a @emph{main input file}, when you want full output from
|
|
|
|
included header files to be generated (and made globally visible). The
|
|
|
|
included header file, in turn, should use @samp{#pragma interface}.
|
|
|
|
Backup copies of inline member functions, debugging information, and the
|
|
|
|
internal tables used to implement virtual functions are all generated in
|
|
|
|
implementation files.
|
|
|
|
|
|
|
|
@cindex implied @code{#pragma implementation}
|
|
|
|
@cindex @code{#pragma implementation}, implied
|
|
|
|
@cindex naming convention, implementation headers
|
|
|
|
If you use @samp{#pragma implementation} with no argument, it applies to
|
|
|
|
an include file with the same basename@footnote{A file's @dfn{basename}
|
|
|
|
was the name stripped of all leading path information and of trailing
|
|
|
|
suffixes, such as @samp{.h} or @samp{.C} or @samp{.cc}.} as your source
|
|
|
|
file. For example, in @file{allclass.cc}, giving just
|
|
|
|
@samp{#pragma implementation}
|
|
|
|
by itself is equivalent to @samp{#pragma implementation "allclass.h"}.
|
|
|
|
|
|
|
|
In versions of GNU C++ prior to 2.6.0 @file{allclass.h} was treated as
|
|
|
|
an implementation file whenever you would include it from
|
|
|
|
@file{allclass.cc} even if you never specified @samp{#pragma
|
|
|
|
implementation}. This was deemed to be more trouble than it was worth,
|
|
|
|
however, and disabled.
|
|
|
|
|
|
|
|
Use the string argument if you want a single implementation file to
|
|
|
|
include code from multiple header files. (You must also use
|
|
|
|
@samp{#include} to include the header file; @samp{#pragma
|
|
|
|
implementation} only specifies how to use the file---it doesn't actually
|
|
|
|
include it.)
|
|
|
|
|
|
|
|
There is no way to split up the contents of a single header file into
|
|
|
|
multiple implementation files.
|
|
|
|
@end table
|
|
|
|
|
|
|
|
@cindex inlining and C++ pragmas
|
|
|
|
@cindex C++ pragmas, effect on inlining
|
|
|
|
@cindex pragmas in C++, effect on inlining
|
|
|
|
@samp{#pragma implementation} and @samp{#pragma interface} also have an
|
|
|
|
effect on function inlining.
|
|
|
|
|
|
|
|
If you define a class in a header file marked with @samp{#pragma
|
2004-07-07 19:38:40 +02:00
|
|
|
interface}, the effect on an inline function defined in that class is
|
|
|
|
similar to an explicit @code{extern} declaration---the compiler emits
|
|
|
|
no code at all to define an independent version of the function. Its
|
|
|
|
definition is used only for inlining with its callers.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
2001-06-13 00:40:00 +02:00
|
|
|
@opindex fno-implement-inlines
|
1996-09-24 00:41:16 +02:00
|
|
|
Conversely, when you include the same header file in a main source file
|
|
|
|
that declares it as @samp{#pragma implementation}, the compiler emits
|
|
|
|
code for the function itself; this defines a version of the function
|
|
|
|
that can be found via pointers (or by callers compiled without
|
|
|
|
inlining). If all calls to the function can be inlined, you can avoid
|
2001-06-13 00:40:00 +02:00
|
|
|
emitting the function by compiling with @option{-fno-implement-inlines}.
|
1996-09-24 00:41:16 +02:00
|
|
|
If any calls were not inlined, you will get linker errors.
|
|
|
|
|
|
|
|
@node Template Instantiation
|
|
|
|
@section Where's the Template?
|
|
|
|
@cindex template instantiation
|
|
|
|
|
|
|
|
C++ templates are the first language feature to require more
|
|
|
|
intelligence from the environment than one usually finds on a UNIX
|
|
|
|
system. Somehow the compiler and linker have to make sure that each
|
|
|
|
template instance occurs exactly once in the executable if it is needed,
|
|
|
|
and not at all otherwise. There are two basic approaches to this
|
bugreport.texi, [...]: Avoid some first-person references and patronizing comments.
* doc/bugreport.texi, doc/configterms.texi, doc/contrib.texi,
doc/contribute.texi, doc/cpp.texi, doc/cppinternals.texi,
doc/extend.texi, doc/install.texi, doc/invoke.texi, doc/md.texi,
doc/portability.texi, doc/tree-ssa.texi, doc/trouble.texi: Avoid
some first-person references and patronizing comments. Based on
printed manual.
* doc/invoke.texi: Don't reference fortran@gnu.org.
* doc/trouble.texi (Warning when a non-void function value is
ignored): Rewrite. From Russ Allbery and Chris Devers.
From-SVN: r84034
2004-07-03 01:57:12 +02:00
|
|
|
problem, which are referred to as the Borland model and the Cfront model.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@table @asis
|
|
|
|
@item Borland model
|
|
|
|
Borland C++ solved the template instantiation problem by adding the code
|
1997-04-24 09:25:19 +02:00
|
|
|
equivalent of common blocks to their linker; the compiler emits template
|
|
|
|
instances in each translation unit that uses them, and the linker
|
|
|
|
collapses them together. The advantage of this model is that the linker
|
|
|
|
only has to consider the object files themselves; there is no external
|
|
|
|
complexity to worry about. This disadvantage is that compilation time
|
|
|
|
is increased because the template code is being compiled repeatedly.
|
|
|
|
Code written for this model tends to include definitions of all
|
|
|
|
templates in the header file, since they must be seen to be
|
|
|
|
instantiated.
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@item Cfront model
|
|
|
|
The AT&T C++ translator, Cfront, solved the template instantiation
|
|
|
|
problem by creating the notion of a template repository, an
|
1997-04-24 09:25:19 +02:00
|
|
|
automatically maintained place where template instances are stored. A
|
|
|
|
more modern version of the repository works as follows: As individual
|
|
|
|
object files are built, the compiler places any template definitions and
|
|
|
|
instantiations encountered in the repository. At link time, the link
|
|
|
|
wrapper adds in the objects in the repository and compiles any needed
|
|
|
|
instances that were not previously emitted. The advantages of this
|
|
|
|
model are more optimal compilation speed and the ability to use the
|
|
|
|
system linker; to implement the Borland model a compiler vendor also
|
1996-09-24 00:41:16 +02:00
|
|
|
needs to replace the linker. The disadvantages are vastly increased
|
1997-04-24 09:25:19 +02:00
|
|
|
complexity, and thus potential for error; for some code this can be
|
|
|
|
just as transparent, but in practice it can been very difficult to build
|
1996-09-24 00:41:16 +02:00
|
|
|
multiple programs in one directory and one program in multiple
|
1997-04-24 09:25:19 +02:00
|
|
|
directories. Code written for this model tends to separate definitions
|
|
|
|
of non-inline member templates into a separate file, which should be
|
|
|
|
compiled separately.
|
1996-09-24 00:41:16 +02:00
|
|
|
@end table
|
|
|
|
|
1997-04-24 09:25:19 +02:00
|
|
|
When used with GNU ld version 2.8 or later on an ELF system such as
|
contrib.texi, [...]: Capitalize "gcc", "g++" and "g77" or mark up with appropriate markup.
* doc/contrib.texi, doc/extend.texi, doc/gcov.texi,
doc/install.texi, doc/invoke.texi, doc/makefile.texi,
doc/sourcebuild.texi, doc/tm.texi, doc/trouble.texi: Capitalize
"gcc", "g++" and "g77" or mark up with appropriate markup. Adjust
wording and grammar.
From-SVN: r79482
2004-03-14 23:29:38 +01:00
|
|
|
GNU/Linux or Solaris 2, or on Microsoft Windows, G++ supports the
|
|
|
|
Borland model. On other systems, G++ implements neither automatic
|
1997-04-30 12:01:03 +02:00
|
|
|
model.
|
1997-04-24 09:25:19 +02:00
|
|
|
|
contrib.texi, [...]: Capitalize "gcc", "g++" and "g77" or mark up with appropriate markup.
* doc/contrib.texi, doc/extend.texi, doc/gcov.texi,
doc/install.texi, doc/invoke.texi, doc/makefile.texi,
doc/sourcebuild.texi, doc/tm.texi, doc/trouble.texi: Capitalize
"gcc", "g++" and "g77" or mark up with appropriate markup. Adjust
wording and grammar.
From-SVN: r79482
2004-03-14 23:29:38 +01:00
|
|
|
A future version of G++ will support a hybrid model whereby the compiler
|
1997-04-24 09:25:19 +02:00
|
|
|
will emit any instantiations for which the template definition is
|
|
|
|
included in the compile, and store template definitions and
|
|
|
|
instantiation context information into the object file for the rest.
|
|
|
|
The link wrapper will extract that information as necessary and invoke
|
|
|
|
the compiler to produce the remaining instantiations. The linker will
|
|
|
|
then combine duplicate instantiations.
|
|
|
|
|
|
|
|
In the mean time, you have the following options for dealing with
|
|
|
|
template instantiations:
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@enumerate
|
1997-11-14 02:56:51 +01:00
|
|
|
@item
|
2001-06-13 00:40:00 +02:00
|
|
|
@opindex frepo
|
|
|
|
Compile your template-using code with @option{-frepo}. The compiler will
|
1997-11-14 02:56:51 +01:00
|
|
|
generate files with the extension @samp{.rpo} listing all of the
|
|
|
|
template instantiations used in the corresponding object files which
|
|
|
|
could be instantiated there; the link wrapper, @samp{collect2}, will
|
|
|
|
then update the @samp{.rpo} files to tell the compiler where to place
|
|
|
|
those instantiations and rebuild any affected object files. The
|
|
|
|
link-time overhead is negligible after the first pass, as the compiler
|
|
|
|
will continue to place the instantiations in the same files.
|
|
|
|
|
|
|
|
This is your best option for application code written for the Borland
|
|
|
|
model, as it will just work. Code written for the Cfront model will
|
|
|
|
need to be modified so that the template definitions are available at
|
|
|
|
one or more points of instantiation; usually this is as simple as adding
|
|
|
|
@code{#include <tmethods.cc>} to the end of each template header.
|
|
|
|
|
|
|
|
For library code, if you want the library to provide all of the template
|
|
|
|
instantiations it needs, just try to link all of its object files
|
|
|
|
together; the link will fail, but cause the instantiations to be
|
|
|
|
generated as a side effect. Be warned, however, that this may cause
|
|
|
|
conflicts if multiple libraries try to provide the same instantiations.
|
|
|
|
For greater control, use explicit instantiation as described in the next
|
|
|
|
option.
|
|
|
|
|
1996-09-24 00:41:16 +02:00
|
|
|
@item
|
2001-06-13 00:40:00 +02:00
|
|
|
@opindex fno-implicit-templates
|
|
|
|
Compile your code with @option{-fno-implicit-templates} to disable the
|
1996-09-24 00:41:16 +02:00
|
|
|
implicit generation of template instances, and explicitly instantiate
|
|
|
|
all the ones you use. This approach requires more knowledge of exactly
|
|
|
|
which instances you need than do the others, but it's less
|
|
|
|
mysterious and allows greater control. You can scatter the explicit
|
|
|
|
instantiations throughout your program, perhaps putting them in the
|
|
|
|
translation units where the instances are used or the translation units
|
|
|
|
that define the templates themselves; you can put all of the explicit
|
|
|
|
instantiations you need into one big file; or you can create small files
|
|
|
|
like
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
#include "Foo.h"
|
|
|
|
#include "Foo.cc"
|
|
|
|
|
|
|
|
template class Foo<int>;
|
|
|
|
template ostream& operator <<
|
|
|
|
(ostream&, const Foo<int>&);
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
for each of the instances you need, and create a template instantiation
|
|
|
|
library from those.
|
|
|
|
|
|
|
|
If you are using Cfront-model code, you can probably get away with not
|
2001-06-13 00:40:00 +02:00
|
|
|
using @option{-fno-implicit-templates} when compiling files that don't
|
1996-09-24 00:41:16 +02:00
|
|
|
@samp{#include} the member template definitions.
|
|
|
|
|
|
|
|
If you use one big file to do the instantiations, you may want to
|
2001-06-13 00:40:00 +02:00
|
|
|
compile it without @option{-fno-implicit-templates} so you get all of the
|
1996-09-24 00:41:16 +02:00
|
|
|
instances required by your explicit instantiations (but not by any
|
|
|
|
other files) without having to specify them as well.
|
|
|
|
|
contrib.texi, [...]: Capitalize "gcc", "g++" and "g77" or mark up with appropriate markup.
* doc/contrib.texi, doc/extend.texi, doc/gcov.texi,
doc/install.texi, doc/invoke.texi, doc/makefile.texi,
doc/sourcebuild.texi, doc/tm.texi, doc/trouble.texi: Capitalize
"gcc", "g++" and "g77" or mark up with appropriate markup. Adjust
wording and grammar.
From-SVN: r79482
2004-03-14 23:29:38 +01:00
|
|
|
G++ has extended the template instantiation syntax given in the ISO
|
2003-04-11 04:25:13 +02:00
|
|
|
standard to allow forward declaration of explicit instantiations
|
2000-05-30 10:47:25 +02:00
|
|
|
(with @code{extern}), instantiation of the compiler support data for a
|
2001-06-27 02:04:39 +02:00
|
|
|
template class (i.e.@: the vtable) without instantiating any of its
|
2000-05-30 10:47:25 +02:00
|
|
|
members (with @code{inline}), and instantiation of only the static data
|
|
|
|
members of a template class, without the support data or member
|
|
|
|
functions (with (@code{static}):
|
1996-09-24 00:41:16 +02:00
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
extern template int max (int, int);
|
|
|
|
inline template class Foo<int>;
|
2000-05-30 10:47:25 +02:00
|
|
|
static template class Foo<int>;
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1996-09-24 00:41:16 +02:00
|
|
|
|
|
|
|
@item
|
contrib.texi, [...]: Capitalize "gcc", "g++" and "g77" or mark up with appropriate markup.
* doc/contrib.texi, doc/extend.texi, doc/gcov.texi,
doc/install.texi, doc/invoke.texi, doc/makefile.texi,
doc/sourcebuild.texi, doc/tm.texi, doc/trouble.texi: Capitalize
"gcc", "g++" and "g77" or mark up with appropriate markup. Adjust
wording and grammar.
From-SVN: r79482
2004-03-14 23:29:38 +01:00
|
|
|
Do nothing. Pretend G++ does implement automatic instantiation
|
1996-09-24 00:41:16 +02:00
|
|
|
management. Code written for the Borland model will work fine, but
|
|
|
|
each translation unit will contain instances of each of the templates it
|
|
|
|
uses. In a large program, this can lead to an unacceptable amount of code
|
|
|
|
duplication.
|
|
|
|
@end enumerate
|
|
|
|
|
1999-01-04 12:56:18 +01:00
|
|
|
@node Bound member functions
|
|
|
|
@section Extracting the function pointer from a bound pointer to member function
|
|
|
|
@cindex pmf
|
|
|
|
@cindex pointer to member function
|
|
|
|
@cindex bound pointer to member function
|
|
|
|
|
|
|
|
In C++, pointer to member functions (PMFs) are implemented using a wide
|
|
|
|
pointer of sorts to handle all the possible call mechanisms; the PMF
|
|
|
|
needs to store information about how to adjust the @samp{this} pointer,
|
|
|
|
and if the function pointed to is virtual, where to find the vtable, and
|
|
|
|
where in the vtable to look for the member function. If you are using
|
|
|
|
PMFs in an inner loop, you should really reconsider that decision. If
|
|
|
|
that is not an option, you can extract the pointer to the function that
|
|
|
|
would be called for a given object/PMF pair and call it directly inside
|
|
|
|
the inner loop, to save a bit of time.
|
|
|
|
|
|
|
|
Note that you will still be paying the penalty for the call through a
|
|
|
|
function pointer; on most modern architectures, such a call defeats the
|
c-tree.texi, [...]: Replace . at end of sentences preceded by a capital letter with @..
* doc/c-tree.texi, doc/contrib.texi, doc/cpp.texi,
doc/cppinternals.texi, doc/extend.texi, doc/gcc.texi,
doc/gcov.texi, doc/install-old.texi, doc/install.texi,
doc/invoke.texi, doc/md.texi, doc/rtl.texi, doc/tm.texi: Replace
. at end of sentences preceded by a capital letter with @..
From-SVN: r43611
2001-06-27 17:04:16 +02:00
|
|
|
branch prediction features of the CPU@. This is also true of normal
|
1999-01-04 12:56:18 +01:00
|
|
|
virtual function calls.
|
|
|
|
|
|
|
|
The syntax for this extension is
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1999-01-04 12:56:18 +01:00
|
|
|
extern A a;
|
|
|
|
extern int (A::*fp)();
|
|
|
|
typedef int (*fptr)(A *);
|
|
|
|
|
|
|
|
fptr p = (fptr)(a.*fp);
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1999-01-04 12:56:18 +01:00
|
|
|
|
2001-06-27 02:04:39 +02:00
|
|
|
For PMF constants (i.e.@: expressions of the form @samp{&Klasse::Member}),
|
2001-06-27 00:47:11 +02:00
|
|
|
no object is needed to obtain the address of the function. They can be
|
1999-09-21 21:34:59 +02:00
|
|
|
converted to function pointers directly:
|
|
|
|
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@smallexample
|
1999-09-21 21:34:59 +02:00
|
|
|
fptr p1 = (fptr)(&A::foo);
|
c-tree.texi, [...]: Use @smallexample instead of @example.
* doc/c-tree.texi, doc/compat.texi, doc/cpp.texi,
doc/cppopts.texi, doc/extend.texi, doc/install.texi,
doc/interface.texi, doc/invoke.texi, doc/libgcc.texi, doc/md.texi,
doc/objc.texi, doc/rtl.texi, doc/tm.texi, doc/trouble.texi: Use
@smallexample instead of @example.
From-SVN: r76075
2004-01-18 02:20:48 +01:00
|
|
|
@end smallexample
|
1999-09-21 21:34:59 +02:00
|
|
|
|
2001-06-13 00:40:00 +02:00
|
|
|
@opindex Wno-pmf-conversions
|
|
|
|
You must specify @option{-Wno-pmf-conversions} to use this extension.
|
1999-01-04 12:56:18 +01:00
|
|
|
|
2001-01-02 03:56:01 +01:00
|
|
|
@node C++ Attributes
|
|
|
|
@section C++-Specific Variable, Function, and Type Attributes
|
|
|
|
|
|
|
|
Some attributes only make sense for C++ programs.
|
|
|
|
|
|
|
|
@table @code
|
|
|
|
@item init_priority (@var{priority})
|
|
|
|
@cindex init_priority attribute
|
|
|
|
|
|
|
|
|
|
|
|
In Standard C++, objects defined at namespace scope are guaranteed to be
|
|
|
|
initialized in an order in strict accordance with that of their definitions
|
|
|
|
@emph{in a given translation unit}. No guarantee is made for initializations
|
|
|
|
across translation units. However, GNU C++ allows users to control the
|
2001-02-22 16:41:49 +01:00
|
|
|
order of initialization of objects defined at namespace scope with the
|
2001-01-02 03:56:01 +01:00
|
|
|
@code{init_priority} attribute by specifying a relative @var{priority},
|
|
|
|
a constant integral expression currently bounded between 101 and 65535
|
|
|
|
inclusive. Lower numbers indicate a higher priority.
|
|
|
|
|
|
|
|
In the following example, @code{A} would normally be created before
|
|
|
|
@code{B}, but the @code{init_priority} attribute has reversed that order:
|
|
|
|
|
2002-09-04 19:35:59 +02:00
|
|
|
@smallexample
|
2001-01-02 03:56:01 +01:00
|
|
|
Some_Class A __attribute__ ((init_priority (2000)));
|
|
|
|
Some_Class B __attribute__ ((init_priority (543)));
|
2002-09-04 19:35:59 +02:00
|
|
|
@end smallexample
|
2001-01-02 03:56:01 +01:00
|
|
|
|
|
|
|
@noindent
|
|
|
|
Note that the particular values of @var{priority} do not matter; only their
|
|
|
|
relative ordering.
|
|
|
|
|
2001-03-23 02:49:11 +01:00
|
|
|
@item java_interface
|
|
|
|
@cindex java_interface attribute
|
|
|
|
|
2001-04-28 13:35:04 +02:00
|
|
|
This type attribute informs C++ that the class is a Java interface. It may
|
2001-03-23 02:49:11 +01:00
|
|
|
only be applied to classes declared within an @code{extern "Java"} block.
|
2001-04-28 13:35:04 +02:00
|
|
|
Calls to methods declared in this interface will be dispatched using GCJ's
|
|
|
|
interface table mechanism, instead of regular virtual table dispatch.
|
2001-03-23 02:49:11 +01:00
|
|
|
|
2001-01-02 03:56:01 +01:00
|
|
|
@end table
|
|
|
|
|
2003-11-11 23:27:32 +01:00
|
|
|
See also @xref{Strong Using}.
|
|
|
|
|
|
|
|
@node Strong Using
|
|
|
|
@section Strong Using
|
|
|
|
|
2004-04-19 00:01:15 +02:00
|
|
|
@strong{Caution:} The semantics of this extension are not fully
|
|
|
|
defined. Users should refrain from using this extension as its
|
|
|
|
semantics may change subtly over time. It is possible that this
|
|
|
|
extension wil be removed in future versions of G++.
|
|
|
|
|
2003-11-11 23:27:32 +01:00
|
|
|
A using-directive with @code{__attribute ((strong))} is stronger
|
|
|
|
than a normal using-directive in two ways:
|
|
|
|
|
|
|
|
@itemize @bullet
|
|
|
|
@item
|
|
|
|
Templates from the used namespace can be specialized as though they were members of the using namespace.
|
|
|
|
|
|
|
|
@item
|
|
|
|
The using namespace is considered an associated namespace of all
|
|
|
|
templates in the used namespace for purposes of argument-dependent
|
|
|
|
name lookup.
|
|
|
|
@end itemize
|
|
|
|
|
|
|
|
This is useful for composing a namespace transparently from
|
|
|
|
implementation namespaces. For example:
|
|
|
|
|
|
|
|
@smallexample
|
|
|
|
namespace std @{
|
|
|
|
namespace debug @{
|
|
|
|
template <class T> struct A @{ @};
|
|
|
|
@}
|
|
|
|
using namespace debug __attribute ((__strong__));
|
2004-09-17 15:57:03 +02:00
|
|
|
template <> struct A<int> @{ @}; // @r{ok to specialize}
|
2003-11-11 23:27:32 +01:00
|
|
|
|
|
|
|
template <class T> void f (A<T>);
|
|
|
|
@}
|
|
|
|
|
|
|
|
int main()
|
|
|
|
@{
|
2004-09-17 15:57:03 +02:00
|
|
|
f (std::A<float>()); // @r{lookup finds} std::f
|
2003-11-11 23:27:32 +01:00
|
|
|
f (std::A<int>());
|
|
|
|
@}
|
|
|
|
@end smallexample
|
|
|
|
|
2001-05-13 03:28:18 +02:00
|
|
|
@node Java Exceptions
|
|
|
|
@section Java Exceptions
|
|
|
|
|
|
|
|
The Java language uses a slightly different exception handling model
|
|
|
|
from C++. Normally, GNU C++ will automatically detect when you are
|
|
|
|
writing C++ code that uses Java exceptions, and handle them
|
|
|
|
appropriately. However, if C++ code only needs to execute destructors
|
|
|
|
when Java exceptions are thrown through it, GCC will guess incorrectly.
|
2001-08-18 23:02:44 +02:00
|
|
|
Sample problematic code is:
|
2001-05-13 03:28:18 +02:00
|
|
|
|
2002-09-04 19:35:59 +02:00
|
|
|
@smallexample
|
2001-05-13 03:28:18 +02:00
|
|
|
struct S @{ ~S(); @};
|
2004-09-17 15:57:03 +02:00
|
|
|
extern void bar(); // @r{is written in Java, and may throw exceptions}
|
2001-05-13 03:28:18 +02:00
|
|
|
void foo()
|
|
|
|
@{
|
|
|
|
S s;
|
|
|
|
bar();
|
|
|
|
@}
|
2002-09-04 19:35:59 +02:00
|
|
|
@end smallexample
|
2001-05-13 03:28:18 +02:00
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|
|
@noindent
|
|
|
|
The usual effect of an incorrect guess is a link failure, complaining of
|
|
|
|
a missing routine called @samp{__gxx_personality_v0}.
|
|
|
|
|
|
|
|
You can inform the compiler that Java exceptions are to be used in a
|
|
|
|
translation unit, irrespective of what it might think, by writing
|
|
|
|
@samp{@w{#pragma GCC java_exceptions}} at the head of the file. This
|
|
|
|
@samp{#pragma} must appear before any functions that throw or catch
|
|
|
|
exceptions, or run destructors when exceptions are thrown through them.
|
|
|
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|
|
|
You cannot mix Java and C++ exceptions in the same translation unit. It
|
|
|
|
is believed to be safe to throw a C++ exception from one file through
|
2001-08-18 23:02:44 +02:00
|
|
|
another file compiled for the Java exception model, or vice versa, but
|
|
|
|
there may be bugs in this area.
|
2001-05-13 03:28:18 +02:00
|
|
|
|
2001-01-12 18:07:51 +01:00
|
|
|
@node Deprecated Features
|
|
|
|
@section Deprecated Features
|
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|
|
In the past, the GNU C++ compiler was extended to experiment with new
|
2001-06-27 00:47:11 +02:00
|
|
|
features, at a time when the C++ language was still evolving. Now that
|
2001-01-12 18:07:51 +01:00
|
|
|
the C++ standard is complete, some of those features are superseded by
|
2001-06-27 00:47:11 +02:00
|
|
|
superior alternatives. Using the old features might cause a warning in
|
|
|
|
some cases that the feature will be dropped in the future. In other
|
2001-01-12 18:07:51 +01:00
|
|
|
cases, the feature might be gone already.
|
|
|
|
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|
|
While the list below is not exhaustive, it documents some of the options
|
|
|
|
that are now deprecated:
|
|
|
|
|
|
|
|
@table @code
|
|
|
|
@item -fexternal-templates
|
|
|
|
@itemx -falt-external-templates
|
contrib.texi, [...]: Capitalize "gcc", "g++" and "g77" or mark up with appropriate markup.
* doc/contrib.texi, doc/extend.texi, doc/gcov.texi,
doc/install.texi, doc/invoke.texi, doc/makefile.texi,
doc/sourcebuild.texi, doc/tm.texi, doc/trouble.texi: Capitalize
"gcc", "g++" and "g77" or mark up with appropriate markup. Adjust
wording and grammar.
From-SVN: r79482
2004-03-14 23:29:38 +01:00
|
|
|
These are two of the many ways for G++ to implement template
|
2001-06-27 00:47:11 +02:00
|
|
|
instantiation. @xref{Template Instantiation}. The C++ standard clearly
|
2001-01-12 18:07:51 +01:00
|
|
|
defines how template definitions have to be organized across
|
contrib.texi, [...]: Capitalize "gcc", "g++" and "g77" or mark up with appropriate markup.
* doc/contrib.texi, doc/extend.texi, doc/gcov.texi,
doc/install.texi, doc/invoke.texi, doc/makefile.texi,
doc/sourcebuild.texi, doc/tm.texi, doc/trouble.texi: Capitalize
"gcc", "g++" and "g77" or mark up with appropriate markup. Adjust
wording and grammar.
From-SVN: r79482
2004-03-14 23:29:38 +01:00
|
|
|
implementation units. G++ has an implicit instantiation mechanism that
|
2001-01-12 18:07:51 +01:00
|
|
|
should work just fine for standard-conforming code.
|
|
|
|
|
|
|
|
@item -fstrict-prototype
|
|
|
|
@itemx -fno-strict-prototype
|
|
|
|
Previously it was possible to use an empty prototype parameter list to
|
|
|
|
indicate an unspecified number of parameters (like C), rather than no
|
2001-06-27 00:47:11 +02:00
|
|
|
parameters, as C++ demands. This feature has been removed, except where
|
2001-01-12 18:07:51 +01:00
|
|
|
it is required for backwards compatibility @xref{Backwards Compatibility}.
|
|
|
|
@end table
|
|
|
|
|
2004-11-01 19:24:33 +01:00
|
|
|
G++ allows a virtual function returning @samp{void *} to be overridden
|
|
|
|
by one returning a different pointer type. This extension to the
|
|
|
|
covariant return type rules is now deprecated and will be removed from a
|
|
|
|
future version.
|
|
|
|
|
2001-12-12 11:32:03 +01:00
|
|
|
The named return value extension has been deprecated, and is now
|
contrib.texi, [...]: Capitalize "gcc", "g++" and "g77" or mark up with appropriate markup.
* doc/contrib.texi, doc/extend.texi, doc/gcov.texi,
doc/install.texi, doc/invoke.texi, doc/makefile.texi,
doc/sourcebuild.texi, doc/tm.texi, doc/trouble.texi: Capitalize
"gcc", "g++" and "g77" or mark up with appropriate markup. Adjust
wording and grammar.
From-SVN: r79482
2004-03-14 23:29:38 +01:00
|
|
|
removed from G++.
|
2001-01-12 18:07:51 +01:00
|
|
|
|
2001-02-12 15:29:13 +01:00
|
|
|
The use of initializer lists with new expressions has been deprecated,
|
contrib.texi, [...]: Capitalize "gcc", "g++" and "g77" or mark up with appropriate markup.
* doc/contrib.texi, doc/extend.texi, doc/gcov.texi,
doc/install.texi, doc/invoke.texi, doc/makefile.texi,
doc/sourcebuild.texi, doc/tm.texi, doc/trouble.texi: Capitalize
"gcc", "g++" and "g77" or mark up with appropriate markup. Adjust
wording and grammar.
From-SVN: r79482
2004-03-14 23:29:38 +01:00
|
|
|
and is now removed from G++.
|
2001-12-12 11:32:03 +01:00
|
|
|
|
|
|
|
Floating and complex non-type template parameters have been deprecated,
|
contrib.texi, [...]: Capitalize "gcc", "g++" and "g77" or mark up with appropriate markup.
* doc/contrib.texi, doc/extend.texi, doc/gcov.texi,
doc/install.texi, doc/invoke.texi, doc/makefile.texi,
doc/sourcebuild.texi, doc/tm.texi, doc/trouble.texi: Capitalize
"gcc", "g++" and "g77" or mark up with appropriate markup. Adjust
wording and grammar.
From-SVN: r79482
2004-03-14 23:29:38 +01:00
|
|
|
and are now removed from G++.
|
2001-12-12 11:32:03 +01:00
|
|
|
|
2003-07-27 18:57:18 +02:00
|
|
|
The implicit typename extension has been deprecated and is now
|
contrib.texi, [...]: Capitalize "gcc", "g++" and "g77" or mark up with appropriate markup.
* doc/contrib.texi, doc/extend.texi, doc/gcov.texi,
doc/install.texi, doc/invoke.texi, doc/makefile.texi,
doc/sourcebuild.texi, doc/tm.texi, doc/trouble.texi: Capitalize
"gcc", "g++" and "g77" or mark up with appropriate markup. Adjust
wording and grammar.
From-SVN: r79482
2004-03-14 23:29:38 +01:00
|
|
|
removed from G++.
|
2003-07-27 18:57:18 +02:00
|
|
|
|
|
|
|
The use of default arguments in function pointers, function typedefs and
|
|
|
|
and other places where they are not permitted by the standard is
|
contrib.texi, [...]: Capitalize "gcc", "g++" and "g77" or mark up with appropriate markup.
* doc/contrib.texi, doc/extend.texi, doc/gcov.texi,
doc/install.texi, doc/invoke.texi, doc/makefile.texi,
doc/sourcebuild.texi, doc/tm.texi, doc/trouble.texi: Capitalize
"gcc", "g++" and "g77" or mark up with appropriate markup. Adjust
wording and grammar.
From-SVN: r79482
2004-03-14 23:29:38 +01:00
|
|
|
deprecated and will be removed from a future version of G++.
|
2001-02-12 15:29:13 +01:00
|
|
|
|
2001-01-12 18:07:51 +01:00
|
|
|
@node Backwards Compatibility
|
|
|
|
@section Backwards Compatibility
|
|
|
|
@cindex Backwards Compatibility
|
|
|
|
@cindex ARM [Annotated C++ Reference Manual]
|
|
|
|
|
2001-07-03 02:46:05 +02:00
|
|
|
Now that there is a definitive ISO standard C++, G++ has a specification
|
2001-06-27 00:47:11 +02:00
|
|
|
to adhere to. The C++ language evolved over time, and features that
|
2001-01-12 18:07:51 +01:00
|
|
|
used to be acceptable in previous drafts of the standard, such as the ARM
|
2001-06-27 00:47:11 +02:00
|
|
|
[Annotated C++ Reference Manual], are no longer accepted. In order to allow
|
2001-07-03 02:46:05 +02:00
|
|
|
compilation of C++ written to such drafts, G++ contains some backwards
|
2001-06-27 00:47:11 +02:00
|
|
|
compatibilities. @emph{All such backwards compatibility features are
|
2001-07-03 02:46:05 +02:00
|
|
|
liable to disappear in future versions of G++.} They should be considered
|
2001-01-12 18:07:51 +01:00
|
|
|
deprecated @xref{Deprecated Features}.
|
|
|
|
|
|
|
|
@table @code
|
|
|
|
@item For scope
|
|
|
|
If a variable is declared at for scope, it used to remain in scope until
|
|
|
|
the end of the scope which contained the for statement (rather than just
|
2001-07-03 02:46:05 +02:00
|
|
|
within the for scope). G++ retains this, but issues a warning, if such a
|
2001-01-12 18:07:51 +01:00
|
|
|
variable is accessed outside the for scope.
|
|
|
|
|
2001-12-12 11:32:03 +01:00
|
|
|
@item Implicit C language
|
c-tree.texi, [...]: Use more logical markup.
* doc/c-tree.texi, doc/contrib.texi, doc/extend.texi,
doc/gcc.texi, doc/gcov.texi, doc/install-old.texi,
doc/invoke.texi, doc/md.texi, doc/rtl.texi, doc/tm.texi: Use more
logical markup. Use TeX quotes and dashes. Use @dots{} and
@minus{}. Avoid spaces inside @var. Update last modification
date in gcc.texi.
* doc/gcc.1, doc/gcov.1: Regenerate.
From-SVN: r43369
2001-06-14 13:08:04 +02:00
|
|
|
Old C system header files did not contain an @code{extern "C" @{@dots{}@}}
|
2001-06-27 00:47:11 +02:00
|
|
|
scope to set the language. On such systems, all header files are
|
|
|
|
implicitly scoped inside a C language scope. Also, an empty prototype
|
2001-01-12 18:07:51 +01:00
|
|
|
@code{()} will be treated as an unspecified number of arguments, rather
|
|
|
|
than no arguments, as C++ demands.
|
|
|
|
@end table
|