Commit Graph

142529 Commits

Author SHA1 Message Date
Jakub Jelinek
8ebcad86e6 re PR tree-optimization/68157 (internal compiler error: in reassoc_stmt_dominates_stmt_p, at tree-ssa-reassoc.c:1287)
PR tree-optimization/68157
	* tree-ssa-reassoc.c (attempt_builtin_powi): Set uid of
	pow_stmt or mul_stmt from stmt's uid.
	(reassociate_bb): Set uid of mul_stmt from stmt's uid.

	* g++.dg/opt/pr68157.C: New test.

From-SVN: r230530
2015-11-18 11:23:21 +01:00
Arnaud Charlet
7d4c4fde0e [multiple changes]
2015-11-18  Arnaud Charlet  <charlet@adacore.com>

	* switch-c.adb (Scan_Front_End_Switches): Add a check requiring
	-gnatc with -gnateg.

2015-11-18  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch7.adb (Uninstall_Declarations): Before swapping private
	and full views, ensure that the potential use visbility of the
	two views is consistent.

2015-11-18  Doug Rupp  <rupp@adacore.com>

	* s-parame-vxworks.adb: Increase default stack size for targets
	using stack limit checking.

2015-11-18  Jose Ruiz  <ruiz@adacore.com>

	* a-interr.adb, a-interr.ads (Ada.Interrupts.Get_CPU): Add this
	function that was added to Ada 2005 returning the processor where
	interrupt handlers execute.

2015-11-18  Tristan Gingold  <gingold@adacore.com>

	* exp_ch9.adb (Is_Pure_Barrier): Handle expanded component
	declaration of a protected definition.

From-SVN: r230529
2015-11-18 11:23:05 +01:00
Arnaud Charlet
3a2b145788 [multiple changes]
2015-11-18  Ed Falis  <falis@adacore.com>

	* s-soflin.adb, s-stchop-vxworks.adb: Code clean ups.

2015-11-18  Gary Dismukes  <dismukes@adacore.com>

	* bcheck.adb: Minor editorial changes.

From-SVN: r230528
2015-11-18 11:20:28 +01:00
Arnaud Charlet
5a99fda7cc [multiple changes]
2015-11-18  Arnaud Charlet  <charlet@adacore.com>

	* interfac.ads (Unsigned_24): New type.
	* sem_ch13.adb (Validate_Unchecked_Conversion): Disable error on
	unconstrained arrays in Relaxed_RM_Semantics mode.

2015-11-18  Vincent Celier  <celier@adacore.com>

	* bcheck.adb (Check_Consistent_Dynamic_Elaboration_Checking): No
	warning is withed unit is the interface of a Stand-Alone Library.

From-SVN: r230527
2015-11-18 11:12:27 +01:00
Arnaud Charlet
1d74252db8 [multiple changes]
2015-11-18  Thomas Quinot  <quinot@adacore.com>

	* s-os_lib.ads, s-os_lib.adb(Normalize_Pathname): Support the case of
	an unresolved Directory argument, by recursively resolving it
	against the current dir.

2015-11-18  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch6.adb (Process_Formals): A function declaration that
	returns a class-wide type must have freeing deferred, so that it
	is not frozen before the class-wide type and its root type are
	frozen. This is significant when there may be a limited view of
	the class_wide type in another package.

From-SVN: r230526
2015-11-18 11:10:46 +01:00
Arnaud Charlet
2f54ef3d56 [multiple changes]
2015-11-18  Hristian Kirtchev  <kirtchev@adacore.com>

	* einfo.adb (Has_Non_Null_Refinement): Rename to
	Has_Non_Null_Visible_Refinement.
	(Has_Null_Refinement): Rename to Has_Null_Visible_Refinement.
	* einfo.ads Update the documentation of
	attribute Has_Non_Null_Refinement and attribute Has_Null_Refinement.
	(Has_Non_Null_Refinement): Rename to Has_Non_Null_Visible_Refinement
	and update occurrences in entities.
	(Has_Null_Refinement): Rename to Has_Null_Visible_Refinement and update
	occurrences in entities.
	* sem_prag.adb (Check_In_Out_States): Update the calls to
	Has_[Non_]Null_Refinement.
	(Check_Input_States): Update the
	calls to Has_[Non_]Null_Refinement.
	(Check_Output_States): Update the calls to Has_[Non_]Null_Refinement.
	(Check_Proof_In_States): Update the calls to Has_[Non_]Null_Refinement.
	(Collect_Global_Item): Update the calls to Has_[Non_]Null_Refinement.
	(Is_Null_Refined_State): Update the calls to Has_[Non_]Null_Refinement.
	(Match_Item): Update the calls to Has_[Non_]Null_Refinement.
	* sem_util.adb (Has_Non_Null_Refinement): New routine.
	(Has_Null_Refinement): New routine.
	* sem_util.ads (Has_Non_Null_Refinement): New routine.
	(Has_Null_Refinement): New routine.

2015-11-18  Gary Dismukes  <dismukes@adacore.com>

	* exp_util.adb: Minor reformatting and typo fixes.

From-SVN: r230525
2015-11-18 11:08:00 +01:00
Hristian Kirtchev
d930784028 sem_ch4.adb: Minor reformatting.
2015-11-18  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_ch4.adb: Minor reformatting.

2015-11-18  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_util.adb (Expand_Subtype_From_Expr): Add new formal
	parameter Related_Id and propagate it to Make_Subtype_From_Expr.
	(Make_Subtype_From_Expr): Add new formal parameter
	Related_Id. Create external entities when requested by the caller.
	* exp_util.ads (Expand_Subtype_From_Expr): Add new formal
	parameter Related_Id. Update the comment on usage.
	(Make_Subtype_From_Expr): Add new formal parameter
	Related_Id. Update the comment on usage.
	* sem_ch3.adb (Analyze_Object_Declaration): Add local variable
	Related_Id. Generate an external constrained subtype when the
	object is a public symbol.

2015-11-18  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_prag.adb (Analyze_Pragma): Update the grammars of pragmas
	Abstract_State, Depends, Global, Initializes, Refined_Depends,
	Refined_Global and Refined_State.

From-SVN: r230524
2015-11-18 11:05:58 +01:00
Arnaud Charlet
5904016a5c [multiple changes]
2015-11-18  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_util.adb (Has_Full_Default_Initialization):
	Perform the test for the presence of pragma
	Default_Initial_Condition prior to the specialized type
	checks. Add a missing case where the lack of a pragma argument
	yields full default initialization.

2015-11-18  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_res.adb (Resolve_Entity_Name): Do not check
	for elaboration issues when a variable appears as the name of
	an object renaming declaration as this constitutes an aliasing,
	not a read.

2015-11-18  Ed Schonberg  <schonberg@adacore.com>

	* checks.adb (Overlap_Check): An actual that is an aggregate
	cannot overlap with another actual, and no check should be
	generated for it.
	* targparm.ads: Fix typos.

2015-11-18  Pascal Obry  <obry@adacore.com>

	* adaint.c: Routine __gnat_killprocesstree only implemented on
	Linux and Windows.

2015-11-18  Pascal Obry  <obry@adacore.com>

	* g-ctrl_c.adb: Minor style fixes.

From-SVN: r230523
2015-11-18 11:03:44 +01:00
Arnaud Charlet
287aa0ed92 [multiple changes]
2015-11-18  Pascal Obry  <obry@adacore.com>

	* adaint.c, s-os_lib.adb, s-os_lib.ads (Kill_Process_Tree): New.

2015-11-18  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_util.adb (Check_Nonvolatile_Function_Profile): Place the error
	message concerning the return type on the result definition.
	(Is_Volatile_Function): A function with a parameter of a protected
	type is a protected function if it is defined within a protected
	definition.

2015-11-18  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch4.adb (Try_Container_Indexing): When building the
	parameter list for the function call on indexing functions,
	preserve overloading of the parameters, which may themselves be
	generalized indexing operations.

From-SVN: r230522
2015-11-18 10:38:46 +01:00
Martin Liska
da54052e5a Add missing test-case for PR ipa/68035
From-SVN: r230521
2015-11-18 09:06:50 +00:00
Martin Liska
36fb33de48 Release memory in haifa-sched
* haifa-sched.c (haifa_finish_h_i_d): Release reg_set_list.

From-SVN: r230520
2015-11-18 09:01:35 +00:00
Martin Liska
a4f0c29da8 Fix memory leaks in tree-ssa-uninit.c
* tree-ssa-uninit.c (convert_control_dep_chain_into_preds):
	Fix GNU coding style.
	(find_def_preds): Use auto_vec.
	(destroy_predicate_vecs): Change signature of the function.
	(prune_uninit_phi_opnds_in_unrealizable_paths): Use the
	new signature.
	(simplify_preds_4): Use destroy_predicate_vecs instread of
	just releasing preds vector.
	(normalize_preds): Likewise.
	(is_use_properly_guarded): Use new signature of
	destroy_predicate_vecs.
	(find_uninit_use): Likewise.

From-SVN: r230519
2015-11-18 09:00:58 +00:00
Richard Biener
0b176958df re PR middle-end/67790 (verify_ssa failed: definition in block 20 follows the use)
2015-11-18  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/67790
	* tree-vect-loop.c (vect_is_simple_reduction_1): Remove
	IL rewrite for MINUS_EXPR reductions, rename back to ...
	(vect_is_simple_reduction): ... this, removing the wrapper.
	(vect_force_simple_reduction): Adjust.
	(vectorizable_reduction): Adjust reduc_index for MINUS_EXPR
	reductions and make use if reduc_index in all places.  For
	the final reduction of MINUS_EXPR use PLUS_EXPR.

	* gcc.dg/vect/pr67790.c: New testcase.

From-SVN: r230518
2015-11-18 08:31:32 +00:00
David Edelsohn
ae53cf85a0 * g++.dg/cpp1y/pr58708.C: Define wfoo based on sizeof wchar_t.
From-SVN: r230516
2015-11-17 19:43:59 -05:00
GCC Administrator
cceac13fa1 Daily bump.
From-SVN: r230515
2015-11-18 00:16:14 +00:00
Alan Modra
458bc9b1d0 A default of -z relro (as on Fedora) defeats the deliberate mis-alignment of .got in the testcase.
POWERPC64_TOC_POINTER_ALIGNMENT

A default of -z relro (as on Fedora) defeats the deliberate
mis-alignment of .got in the testcase.

	* configure.ac (POWERPC64_TOC_POINTER_ALIGNMENT): Pass -z norelro
	to ld.
	* configure: Regenerate.

From-SVN: r230509
2015-11-18 09:54:30 +10:30
Jason Merrill
0465369f41 re PR bootstrap/68346 (Bootstrap failure on i686-linux)
PR bootstrap/68346

	* typeck.c (build_static_cast_1): Force a NOP when converting to
	the same type.

From-SVN: r230508
2015-11-17 16:49:23 -05:00
Jason Merrill
f26a415e75 LITERAL_ZERO_P obsoleted by delayed folding.
* cp-tree.h (LITERAL_ZERO_P): Remove.
	* parser.c (cp_parser_postfix_expression, literal_zeros)
	(cp_parser_parenthesized_expression_list): Don't mess with it.

From-SVN: r230507
2015-11-17 16:49:18 -05:00
Jason Merrill
8c2bebddd2 Don't fold -(constant) or -0.
* parser.c (cp_parser_unary_expression): Fold -constant here.
	* typeck.c (cp_build_unary_op): Not here.

From-SVN: r230506
2015-11-17 16:44:08 -05:00
Tom de Vries
33c6daf478 Improve comments in pass_tree_loop_init::execute
2015-11-17  Tom de Vries  <tom@codesourcery.com>

	* tree-ssa-loop.c (pass_tree_loop_init::execute): Improve comments.

From-SVN: r230505
2015-11-17 21:42:36 +00:00
Tom de Vries
ed22b76f3f Make fdump-tree-sccp-details more complete
2015-11-17  Tom de Vries  <tom@codesourcery.com>

	* tree-scalar-evolution.c (scev_const_prop): Dump details if replacing
	uses of ssa_name with constant.

From-SVN: r230504
2015-11-17 21:42:27 +00:00
Tom de Vries
635d5dd516 Clear LOOP_CLOSED_SSA after pass_ccp
2015-11-17  Tom de Vries  <tom@codesourcery.com>

	* tree-ssa-ccp.c (do_ssa_ccp): Clear LOOP_CLOSED_SSA in loops state if
	something changed.

From-SVN: r230503
2015-11-17 21:42:18 +00:00
Tom de Vries
886c388d74 Add in_oacc_kernels_region in struct loop
2015-11-17  Tom de Vries  <tom@codesourcery.com>

	* cfgloop.h (struct loop): Add in_oacc_kernels_region field.
	* omp-low.c (mark_loops_in_oacc_kernels_region): New function.
	(expand_omp_target): Call mark_loops_in_oacc_kernels_region.

From-SVN: r230502
2015-11-17 21:42:09 +00:00
Bernd Schmidt
211c93053a Preliminary regrename patch for i386 ROP patch
* regrename.c (regrename_find_superclass): New function, code moved
	from ...
	(rename_chains): ... here.  Call it.
	* regrename.h (regrename_find_superclass): Declare.

From-SVN: r230501
2015-11-17 21:32:14 +00:00
Bernd Schmidt
e85883d400 Ensure earlyclobbered operands go through a terminate_write stage.
* regrename.c (record_out_operands): Terminate earlyclobbered
	operands here.

From-SVN: r230500
2015-11-17 21:24:38 +00:00
Bernd Schmidt
d534bf561e re PR target/66785 (internal compiler error in record_operand_use)
PR target/66785
	* regrename.c (record_operand_use): Keep track of failed operands
	and stop appending if we see any.
	* regrename.h (struct operand_rr_info): Add a failed field and shrink
	n_chains to short.

From-SVN: r230499
2015-11-17 21:20:20 +00:00
Sandra Loosemore
9f50f67c0b re PR c/48568 (Missing documentation for __attribute__((visibility ("protected"))) on variables.)
2015-11-17  Sandra Loosemore  <sandra@codesourcery.com>

	PR 48568
	* doc/extend.texi (Common Function Attributes) [visibility]:
	Add cross-references to matching variable and type attributes.
	(Common Variable Attributes) [visibility]: Add missing entry.

From-SVN: r230498
2015-11-17 16:07:15 -05:00
David Malcolm
bef08b718f Fix uninitialized src_range values for c_expr
gcc/c/ChangeLog:
	* c-parser.c (set_c_expr_source_range): Bulletproof both
	overloaded implementations against NULL expr->value.
	(c_parser_braced_init): Set src_range for "ret" to a sane pair of
	values.
	(c_parser_unary_expression): Likewise when handling addresses of
	labels.
	(c_parser_postfix_expression): Likewise for statement expressions,
	for __FUNCTION__, __PRETTY_FUNCTION_ and __func__ keywords, for
	__builtin_va_arg, and for __builtin_offset_of.
	(c_parser_postfix_expression_after_paren_type): Initialize expr's
	src_range using the range of the braced initializer.
	(c_parser_transaction_expression): Set src_range for "ret" to a
	sane pair of values.

gcc/testsuite/ChangeLog:
	* gcc.dg/plugin/diagnostic-test-expressions-1.c (vector): New
	macro.
	(test_braced_init): New function.
	(test_statement_expression): New function.
	(test_address_of_label): New function.
	(test_transaction_expressions): New function.
	(test_keywords): New function.
	(test_builtin_va_arg): New function.
	(test_builtin_offsetof): New function.
	* lib/multiline.exp (_build_multiline_regex): Escape braces.

From-SVN: r230497
2015-11-17 20:09:56 +00:00
Jonathan Wakely
5f0b7c9548 PR libstdc++/66059 optimise _Build_index_tuple
PR libstdc++/66059
	* include/std/utility (_Build_index_tuple): Optimise.

From-SVN: r230496
2015-11-17 19:54:33 +00:00
Steven G. Kargl
490325650d primary.c (gfc_match_structure_constructor): Fix whitespace.
2015-11-17  Steven G. Kargl  <kargl@gcc.gnu.org>

	* primary.c (gfc_match_structure_constructor): Fix whitespace.

From-SVN: r230495
2015-11-17 19:51:10 +00:00
Richard Sandiford
6632fdebbd Simplify rs6000_builtin_vectorized_function
After the previous patches it's no longer necessary for
TARGET_BUILTIN_VECTORIZED_FUNCTION to return functions that
map to the vector optab of the original operation.  We'll use
a vector form of the internal function instead.

Tested on powerpc64-linux-gnu.

gcc/
	* config/rs6000/rs6000.c (rs6000_builtin_vectorized_function): Remove
	entries that map directly to optabs.

From-SVN: r230494
2015-11-17 18:56:52 +00:00
Richard Sandiford
98937c6816 Simplify ix86_builtin_vectorized_function
After the previous patches it's no longer necessary for
TARGET_BUILTIN_VECTORIZED_FUNCTION to return functions that
map to the vector optab of the original operation.  We'll use
a vector form of the internal function instead.

Tested on x86_64-linux-gnu.

gcc/
	* config/i386/i386.c (ix86_builtin_vectorized_function): Remove
	entries that map directly to optabs.

From-SVN: r230493
2015-11-17 18:56:21 +00:00
Richard Sandiford
70439f0d61 Vectorize internal functions
This patch tries to vectorize built-in and internal functions as
internal functions first, falling back on the current built-in
target hooks otherwise.

This means that we'll automatically pick up vector versions of optabs
without the target having to implement any special hooks.  E.g. we'll
use V4SF sqrt if the target defines a "sqrtv4sf2" optab.  As well as
being simpler, it means that the target-independent code has more
idea what the vectorized function does.

Tested on x86_64-linux-gnu, aarch64-linux-gnu, arm-linux-gnu and
powerpc64-linux-gnu.

gcc/
	* internal-fn.h (direct_internal_fn_info): Add vectorizable flag.
	* internal-fn.c (direct_internal_fn_array): Update accordingly.
	* tree-vectorizer.h (vectorizable_function): Delete.
	* tree-vect-stmts.c: Include internal-fn.h.
	(vectorizable_internal_function): New function.
	(vectorizable_function): Inline into...
	(vectorizable_call): ...here.  Explicitly reject calls that read
	from or write to memory.  Try using an internal function before
	falling back on the old vectorizable_function behavior.

From-SVN: r230492
2015-11-17 18:55:55 +00:00
Richard Sandiford
10766209ec Make builtin_vectorized_function take a combined_fn
This patch replaces the fndecl argument to builtin_vectorized_function
with a combined_fn and gets the vectoriser to call it for internal
functions too.  The patch also moves vectorisation of machine-specific
built-ins to a new hook, builtin_md_vectorized_function.

Tested on x86_64-linux-gnu, aarch64-linux-gnu, arm-linux-gnu and
powerpc64-linux-gnu.

gcc/
	* target.def (builtin_vectorized_function): Take a combined_fn (in
	the form of an unsigned int) rather than a function decl.
	(builtin_md_vectorized_function): New.
	* targhooks.h (default_builtin_vectorized_function): Replace the
	fndecl argument with an unsigned int.
	(default_builtin_md_vectorized_function): Declare.
	* targhooks.c (default_builtin_vectorized_function): Replace the
	fndecl argument with an unsigned int.
	(default_builtin_md_vectorized_function): New function.
	* doc/tm.texi.in (TARGET_VECTORIZE_BUILTIN_MD_VECTORIZED_FUNCTION):
	New hook.
	* doc/tm.texi: Regenerate.
	* tree-vect-stmts.c (vectorizable_function): Update call to
	builtin_vectorized_function, also passing internal functions.
	Call builtin_md_vectorized_function for target-specific builtins.
	* config/aarch64/aarch64-protos.h
	(aarch64_builtin_vectorized_function): Replace fndecl argument
	with an unsigned int.
	* config/aarch64/aarch64-builtins.c: Include case-cfn-macros.h.
	(aarch64_builtin_vectorized_function): Update after above changes.
	Use CASE_CFN_*.
	* config/arm/arm-protos.h (arm_builtin_vectorized_function): Replace
	fndecl argument with an unsigned int.
	* config/arm/arm-builtins.c: Include case-cfn-macros.h
	(arm_builtin_vectorized_function): Update after above changes.
	Use CASE_CFN_*.
	* config/i386/i386.c: Include case-cfn-macros.h
	(ix86_veclib_handler): Take a combined_fn rather than a
	built_in_function.
	(ix86_veclibabi_svml, ix86_veclibabi_acml): Likewise.  Use
	mathfn_built_in rather than calling builtin_decl_implicit directly.
	(ix86_builtin_vectorized_function) Update after above changes.
	Use CASE_CFN_*.
	* config/rs6000/rs6000.c: Include case-cfn-macros.h
	(rs6000_builtin_vectorized_libmass): Replace fndecl argument
	with a combined_fn.  Use CASE_CFN_*.  Use mathfn_built_in rather
	than calling builtin_decl_implicit directly.
	(rs6000_builtin_vectorized_function): Update after above changes.
	Use CASE_CFN_*.  Move BUILT_IN_MD to...
	(rs6000_builtin_md_vectorized_function): ...this new function.
	(TARGET_VECTORIZE_BUILTIN_MD_VECTORIZED_FUNCTION): Define.

From-SVN: r230491
2015-11-17 18:55:13 +00:00
Richard Sandiford
b4e5bc4782 Use IFN_SQRT in tree-vect-patterns.c
In practice all targets that can vectorise sqrt define the appropriate
sqrt<mode>2 optab.  The only case where this isn't immediately obvious
is the libmass support in rs6000.c, but Mike Meissner said that it shouldn't
be exercised for sqrt.

This patch therefore uses the internal function interface instead of
going via the target hook.

Tested on x86_64-linux-gnu, aarch64-linux-gnu, arm-linux-gnueabi and
powerpc64-linux-gnu.

gcc/
	* tree-vect-patterns.c: Include internal-fn.h.
	(vect_recog_pow_pattern): Use IFN_SQRT instead of BUILT_IN_SQRT*.

From-SVN: r230490
2015-11-17 18:54:36 +00:00
Richard Sandiford
03dc244a81 Remove dead macros
Nothing uses these macros and removing them makes it more likely
that future code will use CASE_CFN_* instead.

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* tree.h (BUILTIN_EXP10_P, BUILTIN_EXPONENT_P, BUILTIN_SQRT_P)
	(BUILTIN_CBRT_P, BUILTIN_ROOT_P): Delete.

From-SVN: r230489
2015-11-17 18:53:43 +00:00
Richard Sandiford
883cabdecd Extend tree-call-cdce to calls whose result is used
For -fmath-errno, builtins.c currently expands calls to sqrt to:

        y = sqrt_optab (x);
        if (y != y)
          [ sqrt (x); or errno = EDOM; ]

The drawbacks of this are:

- the call to sqrt is protected by the result of the optab rather
      than the input.  It would be better to check __builtin_isless (x, 0),
      like tree-call-cdce.c does.

- the branch isn't exposed at the gimple level and so gets little
      high-level optimisation.

- we do this for log too, but for log a zero input produces
      -inf rather than a NaN, and sets errno to ERANGE rather than EDOM.

This patch moves the code to tree-call-cdce.c instead, with the optab
operation being represented as an internal function.  This means that
we can use the existing argument-based range checks rather than the
result-based checks and that we get more gimple optimisation of
the branch.

Previously the pass was only enabled by default at -O2 or above,
but the old builtins.c code was enabled at -O.  The patch therefore
enables the pass at -O as well.

The previous patch to cfgexpand.c handled cases where functions
don't (or are assumed not to) set errno, so this patch makes
the builtins.c code dead.

Tested on x86_64-linux-gnu, aarch64-linux-gnu, arm-linux-gnueabi
and visium-elf (for the EDOM stuff).

gcc/
	* builtins.c (expand_errno_check, expand_builtin_mathfn)
	(expand_builtin_mathfn_2): Delete.
	(expand_builtin): Remove handling of functions with
	internal function equivalents.
	* internal-fn.def (SET_EDOM): New internal function.
	* internal-fn.h (set_edom_supported_p): Declare.
	* internal-fn.c (expand_SET_EDOM): New function.
	(set_edom_supported_p): Likewise.
	* tree-call-cdce.c: Include builtins.h and internal-fn.h.
	Rewrite comment at head of file.
	(is_call_dce_candidate): Rename to...
	(can_test_argument_range): ...this.  Don't check gimple_call_lhs
	or gimple_call_builtin_p here.
	(edom_only_function): New function.
	(shrink_wrap_one_built_in_call_with_conds): New function, split out
	from...
	(shrink_wrap_one_built_in_call): ...here.
	(can_use_internal_fn, use_internal_fn): New functions.
	(shrink_wrap_conditional_dead_built_in_calls): Call use_internal_fn
	for calls that have an lhs.
	(pass_call_cdce::gate): Remove optimize_function_for_speed_p check.
	(pass_call_cdce::execute): Skip blocks that are optimized for size.
	Check gimple_call_builtin_p here.  Use can_use_internal_fn for
	calls with an lhs.
	* opts.c (default_options_table): Enable -ftree-builtin-call-cdce
	at -O and above.

From-SVN: r230488
2015-11-17 18:51:55 +00:00
Richard Sandiford
4cfe7a6c35 Short-cut generation of simple built-in functions
This patch short-circuits the builtins.c expansion code for a particular
gimple call if:

- the function has an associated internal function
- the target implements that internal function
- the call has no side effects

This allows a later patch to remove the builtins.c code, once calls with
side effects have been handled.

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* builtins.h (called_as_built_in): Declare.
	* builtins.c (called_as_built_in): Make external.
	* internal-fn.h (expand_internal_call): Define a variant that
	specifies the internal function explicitly.
	* internal-fn.c (expand_load_lanes_optab_fn)
	(expand_store_lanes_optab_fn, expand_ANNOTATE, expand_GOMP_SIMD_LANE)
	(expand_GOMP_SIMD_VF, expand_GOMP_SIMD_LAST_LANE)
	(expand_GOMP_SIMD_ORDERED_START, expand_GOMP_SIMD_ORDERED_END)
	(expand_UBSAN_NULL, expand_UBSAN_BOUNDS, expand_UBSAN_VPTR)
	(expand_UBSAN_OBJECT_SIZE, expand_ASAN_CHECK, expand_TSAN_FUNC_EXIT)
	(expand_UBSAN_CHECK_ADD, expand_UBSAN_CHECK_SUB)
	(expand_UBSAN_CHECK_MUL, expand_ADD_OVERFLOW, expand_SUB_OVERFLOW)
	(expand_MUL_OVERFLOW, expand_LOOP_VECTORIZED)
	(expand_mask_load_optab_fn, expand_mask_store_optab_fn)
	(expand_ABNORMAL_DISPATCHER, expand_BUILTIN_EXPECT, expand_VA_ARG)
	(expand_UNIQUE, expand_GOACC_DIM_SIZE, expand_GOACC_DIM_POS)
	(expand_GOACC_LOOP, expand_GOACC_REDUCTION, expand_direct_optab_fn)
	(expand_unary_optab_fn, expand_binary_optab_fn): Add an internal_fn
	argument.
	(internal_fn_expanders): Update prototype.
	(expand_internal_call): Define a variant that specifies the
	internal function explicitly. Use it to implement the previous
	interface.
	* cfgexpand.c (expand_call_stmt): Try to expand calls to built-in
	functions as calls to internal functions.

From-SVN: r230487
2015-11-17 18:51:20 +00:00
Richard Sandiford
b1dc4a20a7 Replace match.pd DEFINE_MATH_FNs with auto-generated lists
This patch autogenerates the operator lists for maths functions
like SQRT, adding an additional entry for internal functions.
E.g.:

        (define_operator_list SQRT
            BUILT_IN_SQRTF
            BUILT_IN_SQRT
            BUILT_IN_SQRTL
            IFN_SQRT)

and:

        (define_operator_list CABS
            BUILT_IN_CABSF
            BUILT_IN_CABS
            BUILT_IN_CABSL
            null)

(since there's no internal function for CABS).

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* Makefile.in (MOSTLYCLEANFILES): Add cfn-operators.pd.
	(generated_files): Likewise.
	(s-cfn-operators, cfn-operators.pd): New rules.
	(s-match): Depend on cfn-operators.pd.
	* gencfn-macros.c: Expand comment to describe -o behavior.
	(print_define_operator_list): New function.
	(main): Accept -o.  Call print_define_operator_list.
	* genmatch.c (main): Add the current directory to the include path.
	* match.pd (DEFINE_MATH_FN): Delete.  Include cfn-operators.pd
	instead.

From-SVN: r230486
2015-11-17 18:49:10 +00:00
Richard Sandiford
fa74b47a8c Add null identifiers to genmatch
This patch adds a null identifier that can never match anything and
can never be generated.  It is only valid in operator lists and fors.
Later patches will add uses of it.

The idea is to allow operator lists for maths functions that have
four entries:

- float built-in
- double built-in
- long double built-in
- internal function

Not all maths functions have an associated internal function,
and for those the final operator will be "null".  Any simplification
that tries to use a null substitution will be skipped.

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* doc/match-and-simplify.texi: Document the "null" identifier.
	* genmatch.c (id_base::NULL_ID): New kind.
	(null_id): New variable.
	(get_operator): Add a parameter that says whether null identifiers
	are allowed.
	(contains_id): New function.
	(lower_for): Skip substitutions that would have a null_id in
	either the match or the result.
	(parser::parse_for): Allow the null identifier to be used.
	(parser::parse_operator_list): Likewise.
	(main): Initialize null_id.

From-SVN: r230485
2015-11-17 18:48:23 +00:00
Richard Sandiford
c9e926ce2b Add genmatch support for internal functions
This patch makes genmatch match calls based on combined_fn rather
than built_in_function and extends the matching to internal functions.
It also uses fold_const_call to fold the calls to a constant, rather
than going through fold_builtin_n.

In order to slightly simplify the code and remove potential
ambiguity, the patch enforces lower case for tree codes
(foo->FOO_EXPR), caps for functions (no built_in_hypot->BUILT_IN_HYPOT)
and requires an exact match for user-defined identifiers.  The first two
were already met in practice but there were a couple of cases where
operator lists were defined in one case and used in another.

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* match.pd: Use HYPOT and COS rather than hypot and cos.
	Use CASE_CFN_* macros.  Guard log/exp folds with
	SCALAR_FLOAT_TYPE_P.
	* genmatch.c (internal_fn): New enum.
	(fn_id::fn): Change to an unsigned int.
	(fn_id::fn_id): Accept internal_fn too.
	(add_builtin): Rename to...
	(add_function): ...this and turn into a template.
	(get_operator): Only try one variation if the original name fails.
	Only add _EXPR if the original name was all lower case.
	Try converting internal and built-in function names to their
	CFN equivalents.
	(expr::gen_transform): Use maybe_build_call_expr_loc for generic.
	(dt_simplify::gen_1): Likewise.
	(dt_node::gen_kids_1): Use gimple_call_combined_fn for gimple
	and get_call_combined_fn for generic.
	(dt_simplify::gen): Use combined_fn as the type of fn_ids.
	(decision_tree::gen): Likewise.
	(main): Use lower case in the strings for {VIEW_,}CONVERT[012].
	Use add_function rather than add_builtin.  Register internal
	functions too.
	* generic-match-head.c: Include case-cfn-macros.h.
	* gimple-fold.c (replace_stmt_with_simplification): Use
	gimple_call_combined_fn to test whether we can keep an
	existing call.
	* gimple-match.h (code_helper): Replace built_in_function
	with combined_fn.
	* gimple-match-head.c: Include fold-const-call.h, internal-fn.h
	and case-fn-macros.h.
	(gimple_resimplify1): Use fold_const_call.
	(gimple_resimplify2, gimple_resimplify3): Likewise.
	(build_call_internal, build_call): New functions.
	(maybe_push_res_to_seq): Use them.
	(gimple_simplify): Use fold_const_call.  Set *rcode to a combined_fn
	rather than a built-in function.
	* tree.h (build_call_expr_internal_loc): Declare.
	(maybe_build_call_expr_loc): Likewise.
	* tree.c (build_call_expr_internal_loc_array): New function.
	(maybe_build_call_expr_loc): Likewise.

From-SVN: r230484
2015-11-17 18:47:44 +00:00
Richard Sandiford
b03ff92e67 Extend mathfn_built_in to handle combined_fn
This patch extends mathfn_built_in to handle combined_fn, but keeps the
old built_in_function interface around since it's a common case.

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* builtins.h (mathfn_built_in): Add a variant that takes
	a combined_fn.
	* builtins.c: Include case-cfn-macros.h.
	(CASE_MATHFN): Use CASE_CFN_*.
	(CASE_MATHFN_REENT): Use CFN_ codes.
	(mathfn_built_in_2, mathfn_built_in_1): Replace built_in_function
	argument with a combined_fn.
	(mathfn_built_in): Add a variant that takes a combined_fn.
	(expand_builtin_int_roundingfn_2): Update callers accordingly.
	(fold_builtin_sincos, fold_builtin_classify): Likewise.

From-SVN: r230483
2015-11-17 18:47:02 +00:00
Richard Sandiford
7a31e5ef6d Use combined_fn in tree-vect-patterns.c
Another patch to extend uses of built_in_function to combined_fn,
this time in tree-vect-patterns.c.  The old code didn't handle the
long double pow variants, but I think that's because noone had a target
that would benefit rather than because the code would mishandle them.

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* tree-vect-patterns.c: Include case-cfn-macros.h.
	(vect_recog_pow_pattern): Use combined_fn instead of built-in codes.

From-SVN: r230482
2015-11-17 18:46:22 +00:00
Richard Sandiford
c97d1c9dc4 Use combined_fn in tree-ssa-math-opts.c
Another patch to extend uses of built_in_function to combined_fn, this time
in tree-ssa-math-opts.c.

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* tree-ssa-math-opts.c: Include case-cfn-macros.h.
	(execute_cse_sincos_1): Use combined_fn instead of built-in codes.
	(pass_cse_sincos::execute): Likewise.

From-SVN: r230481
2015-11-17 18:45:41 +00:00
Richard Sandiford
314709cdbe Use combined_fn in tree-ssa-reassoc.c
Another patch to extend uses of built_in_function to combined_fn, this time
in tree-ssa-reassoc.c.

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* tree-ssa-reassoc.c: Include case-cfn-macros.h.
	(stmt_is_power_of_op): Use combined_fn instead of built-in codes.
	(decrement_power, acceptable_pow_call): Likewise.
	(attempt_builtin_copysign): Likewise.

From-SVN: r230480
2015-11-17 18:45:20 +00:00
Richard Sandiford
9c0a9e1277 Use combined_fn in tree-vrp.c
Another patch to extend uses of built_in_function to combined_fn, this time
in tree-vrp.c.

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* tree-vrp.c: Include case-cfn-macros.h.
	(extract_range_basic): Switch on combined_fn rather than handling
	built-in functions and internal functions separately.

From-SVN: r230479
2015-11-17 18:44:22 +00:00
Richard Sandiford
1d9da71f4f Make more use of combined_fn
This patch generalises fold-const.[hc] routines to use combined_fn
instead of built_in_function.  It also updates gimple-ssa-backprop,c
since the update is simple and it avoids churn on the call to
negate_mathfn_p.

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* fold-const.h (negate_mathfn_p): Take a combined_fn rather
	than a built_in_function.
	(tree_call_nonnegative_warnv_p): Take a combined_fn rather than
	a function decl.
	(integer_valued_real_call_p): Likewise.
	* fold-const.c: Include case-cfn-macros.h
	(negate_mathfn_p): Take a combined_fn rather than a built_in_function.
	(negate_expr_p): Update accordingly.
	(tree_call_nonnegative_warnv_p): Take a combined_fn rather than
	a function decl.
	(integer_valued_real_call_p): Likewise.
	(tree_invalid_nonnegative_warnv_p): Update accordingly.
	(integer_valued_real_p): Likewise.
	* gimple-fold.c (gimple_call_nonnegative_warnv_p): Update call
	to tree_call_nonnegative_warnv_p.
	(gimple_call_integer_valued_real_p): Likewise
	integer_valued_real_call_p.
	* gimple-ssa-backprop.c: Include case-cfn-macros.h.
	(backprop::process_builtin_call_use): Extend to combined_fn.
	(strip_sign_op_1): Likewise.
	(backprop::process_use): Don't check for built-in calls here.
	(backprop::execute): Likewise.
	(backprop::optimize_builtin_call): Update call to negate_mathfn_p.

From-SVN: r230478
2015-11-17 18:43:42 +00:00
Richard Sandiford
d7ebef0648 Extend fold_const_call to combined_fn
This patch extends fold_const_call so that it can handle internal
as well as built-in functions.

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* fold-const-call.h (fold_const_call): Replace built_in_function
	arguments with combined_fn arguments.
	* fold-const-call.c: Include case-cfn-macros.h.
	(fold_const_call_ss, fold_const_call_cs, fold_const_call_sc)
	(fold_const_call_cc, fold_const_call_sss, fold_const_call_ccc)
	(fold_const_call_ssss, fold_const_call_1, fold_const_call): Replace
	built_in_function arguments with combined_fn arguments.
	* builtins.c (fold_builtin_sincos, fold_builtin_1, fold_builtin_2)
	(fold_builtin_3): Update calls to fold_const_call.

From-SVN: r230477
2015-11-17 18:42:48 +00:00
Richard Sandiford
6bac43d760 Add gencfn-macros.c
This patch automatically generates case macros such as:

        CASE_CFN_SQRT

for each {F,,L} floating-point built-in function and each {,L,LL,IMAX}
integer built-in function.  The macros match the same built-in
functions as CASE_FLT_FN and CASE_INT_FN but in addition include
the associated internal function, if any.

The idea is to make sure that users of combined_fn don't need to know
which built-in functions have internal-function equivalents.  If we add
a new function to internal-fn.def, all combined_fn users should pick it
up automatically.

The generator wants to use "hash_set <nofree_string_hash>",
so the patch follows hash_map in using the types given by the
traits as the key.  This is a no-op for current users of hash_set.

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* Makefile.in (HASH_TABLE_H): Add GGC_H.
	(MOSTLYCLEANFILES, generated_files): Add case-fn-macros.h.
	(s-case-cfn-macros, case-cfn-macros.h, build/gencfn-macros.o)
	(build/gencfn-macros$(build_exeext): New rules.
	(genprogerr): Add cfn-macros.
	* hash-set.h (hash_set): Use the traits value_type as the key.
	* gencfn-macros.c: New file.

From-SVN: r230476
2015-11-17 18:41:55 +00:00
Richard Sandiford
4959a75288 Add internal bitcount functions
This patch adds internal function equivalents of all the INT_FN functions.
Unlike the math functions, these functions never set errno and the internal
functions should be exactly equivalent to the built-in ones.  The reason
for defining the internal functions is so that we can extend the
functionality to other modes, in particular vector modes.

Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.

gcc/
	* internal-fn.def (DEF_INTERNAL_INT_FN): New macro.
	(CLRSB, CLZ, CTZ, FFS, PARITY, POPCOUNT): New functions.
	* builtins.c (associated_internal_fn): Handle them.

From-SVN: r230475
2015-11-17 18:40:31 +00:00