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darwin.c (darwin_one_byte_bool): New global variable. 

* config/darwin.c (darwin_one_byte_bool): New global variable.
        * config/darwin.h (darwin_one_byte_bool): Declare.
        (SUBTARGET_OPTIONS): Define macro.  (for -mone-byte-bool flag.)
        * config/rs6000/darwin.h (BOOL_TYPE_SIZE): Conditionalize on
        value of darwin_one_byte_bool.
        * doc/invoke.texi: Document -mone-byte-bool flag.
        * testsuite/gcc.dg/darwin-bool-1.c: New test.
        * testsuite/gcc.dg/darwin-bool-2.c: New test.

From-SVN: r85277
This commit is contained in:
Matt Austern 2004-07-28 23:57:28 +00:00 committed by Matt Austern
parent 9f63daea37
commit 8f4220dc92
8 changed files with 70 additions and 3 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2004-07-28 Matt Austern <austern@apple.com>
* config/darwin.c (darwin_one_byte_bool): New global variable.
* config/darwin.h (darwin_one_byte_bool): Declare.
(SUBTARGET_OPTIONS): Define macro. (for -mone-byte-bool flag.)
* config/rs6000/darwin.h (BOOL_TYPE_SIZE): Conditionalize on
value of darwin_one_byte_bool.
* doc/invoke.texi: Document -mone-byte-bool flag.
2004-07-28 Eric Christopher <echristo@redhat.com>
* c-common.c (c_common_unsafe_for_reeval): Delete.

4
gcc/config/darwin.c
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@ -44,6 +44,10 @@ Boston, MA 02111-1307, USA. */
#include "errors.h"
#include "hashtab.h"
/* Nonzero if the user passes the -mone-byte-bool switch, which forces
sizeof(bool) to be 1. */
const char *darwin_one_byte_bool = 0;
int
name_needs_quotes (const char *name)
{

11
gcc/config/darwin.h
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@ -130,7 +130,18 @@ Boston, MA 02111-1307, USA. */
{ "-single_module", "-Zsingle_module" }, \
{ "-unexported_symbols_list", "-Zunexported_symbols_list" }, \
SUBTARGET_OPTION_TRANSLATE_TABLE
/* Nonzero if the user has chosen to force sizeof(bool) to be 1
by providing the -mone-byte-bool switch. It would be better
to use SUBTARGET_SWITCHES for this instead of SUBTARGET_OPTIONS,
but there are no more bits in rs6000 TARGET_SWITCHES. Note
that this switch has no "no-" variant. */
extern const char *darwin_one_byte_bool;
#undef SUBTARGET_OPTIONS
#define SUBTARGET_OPTIONS \
{"one-byte-bool", &darwin_one_byte_bool, N_("Set sizeof(bool) to 1"), 0 }
/* These compiler options take n arguments. */
#undef WORD_SWITCH_TAKES_ARG

6
gcc/config/rs6000/darwin.h
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@ -321,8 +321,10 @@ do { \
#define DOUBLE_INT_ASM_OP "\t.quad\t"
/* For binary compatibility with 2.95; Darwin C APIs use bool from
stdbool.h, which was an int-sized enum in 2.95. */
#define BOOL_TYPE_SIZE INT_TYPE_SIZE
stdbool.h, which was an int-sized enum in 2.95. Users can explicitly
choose to have sizeof(bool)==1 with the -mone-byte-bool switch. */
extern const char *darwin_one_byte_bool;
#define BOOL_TYPE_SIZE (darwin_one_byte_bool ? CHAR_TYPE_SIZE : INT_TYPE_SIZE)
#undef REGISTER_TARGET_PRAGMAS
#define REGISTER_TARGET_PRAGMAS DARWIN_REGISTER_TARGET_PRAGMAS

15
gcc/doc/invoke.texi
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@ -423,7 +423,7 @@ in the following sections.
-single_module -static -sub_library -sub_umbrella @gol
-twolevel_namespace -umbrella -undefined @gol
-unexported_symbols_list -weak_reference_mismatches @gol
-whatsloaded -F -gused -gfull}
-whatsloaded -F -gused -gfull -mone-byte-bool}
@emph{DEC Alpha Options}
@gccoptlist{-mno-fp-regs -msoft-float -malpha-as -mgas @gol
@ -6931,6 +6931,19 @@ This is by default ON.
@opindex -gfull
Emit debugging information for all symbols and types.
@item -mone-byte-bool
@opindex -mone-byte-bool
Override the defaults for @samp{bool} so that @samp{sizeof(bool)==1}.
By default @samp{sizeof(bool)} is @samp{4} when compiling for
Darwin/PowerPC and @samp{1} when compiling for Darwin/x86, so this
option has no effect on x86.
@strong{Warning:} The @option{-mone-byte-bool} switch causes GCC
to generate code that is not binary compatible with code generated
without that switch. Using this switch may require recompiling all
other modules in a program, including system libraries. Use this
switch to conform to a non-default data model.
@item -all_load
@opindex all_load
Loads all members of static archive libraries.

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2004-07-27 Matt Austern <austern@apple.com>
* gcc.dg/darwin-bool-1.c: New test.
* gcc.dg/darwin-bool-2.c: New test.
2004-07-28 Richard Henderson <rth@redhat.com>
* gfortran.fortran-torture/execute/intrinsic_spacing.f90: Pass

11
gcc/testsuite/gcc.dg/darwin-bool-1.c Normal file
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@ -0,0 +1,11 @@
/* Check that sizeof(bool) is 4 if we don't use special options. */
/* Matt Austern <austern@apple.com> */
/* { dg-do run { target powerpc*-*-darwin* } } */
int dummy1[sizeof(_Bool) - 3];
int dummy2[5 - sizeof(_Bool)];
int main()
{
return sizeof(_Bool) == 4 ? 0 : 1;
}

12
gcc/testsuite/gcc.dg/darwin-bool-2.c Normal file
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@ -0,0 +1,12 @@
/* Check that sizeof(bool) is 1 if we use the -mone-byte-bool option. */
/* Matt Austern <austern@apple.com> */
/* { dg-do run { target powerpc*-*-darwin* } } */
/* { dg-options "-mone-byte-bool" } */
int dummy1[sizeof(_Bool)];
int dummy2[2 - sizeof(_Bool)];
int main()
{
return sizeof(_Bool) == 1 ? 0 : 1;
}