* config/nvptx/nvptx-protos.h (nvptx_output_mov_insn): Declare.
	(nvptx_underlying_object_mode): Delete.
	* config/nvptx/nvptx.c (nvptx_underlying_object_mode): Delete.
	(output_reg): New.
	(nvptx_declare_function_name): Use output_reg.  Remove punning
	buffer.
	(nvptx_output_mov_insn): New.
	(nvptx_print_operand): Separate SUBREG handling, remove 'f' case,
	Use output_reg. Merge 't' and 'u' handling.
	* config/nvptx/nvptx.h (NVPTX_PUNNING_BUFFER_REGNUM): Delete.
	(struct machine_function): Remvoe punning_buffer_size.
	(REGISTER_NAMES): Remove %punbuffer.
	* config/nvptx/nvptx.md (UNSPEC_CPLX_LOWPART,
	UNSPEC_CPLX_HIGHPART): Delete.
	(*mov<mode>_insn [QHSDIM): Remove unnecessary constraints, use
	nvptx_output_mov_insn.
	(*mov<mode>_insn [SDFM): Reorder constraints to match integer
	moc.  Use nvptx_output_mov_insn.
	(highpartscsf2,  set_highpartscsf2, lowpartscsf2,
	set_lowpartscsf2): Delete.
	(mov<mode> [SDCM]): Delete.

From-SVN: r231180

2015-12-02  Richard Biener  <rguenther@suse.de>

	* tree.h (tree_invariant_p): Declare.
	* tree.c (tree_invariant_p): Export.
	* genmatch.c (dt_simplify::gen_1): For GENERIC code-gen never
	create SAVE_EXPRs but reject patterns if we would need to.

From-SVN: r231178

2015-12-02  Tom de Vries  <tom@codesourcery.com>

	* tree-ssa-structalias.c (find_func_aliases_for_builtin_call)
	(find_func_clobbers, ipa_pta_execute): Handle BUILT_IN_GOACC_PARALLEL.

	* c-c++-common/goacc/kernels-alias-ipa-pta-2.c: New test.
	* c-c++-common/goacc/kernels-alias-ipa-pta-3.c: New test.
	* c-c++-common/goacc/kernels-alias-ipa-pta.c: New test.

From-SVN: r231169

2015-12-02  Richard Biener  <rguenther@suse.de>

	* gcc.dg/vect/vect-strided-a-u8-i8-gap7-big-array.c: Fix uninitialized
	y guarding a call to abort ().
	* gcc.dg/vect/vect-strided-a-u8-i8-gap7.c: Likewise.
	* gcc.dg/vect/vect-strided-u8-i8-gap7-big-array.c: Likewise.

From-SVN: r231168

gcc/
	* config/i386/sse.md (define_insn "vec_extract_hi_<mode>_maskm"):
	Remove "prefix_extra".
	(define_insn "vec_extract_hi_<mode>_mask"): New.
	(define_insn "vec_extract_hi_<mode>"): Remove masking.
gcc/testsuite/
	* gcc.target/i386/avx512vl-vextractf32x4-1.c: Fix scan pattern.

From-SVN: r231167

On 64-bit we can do comparisons of 32-bit values by extending those
values to 64-bit, subtracting them, and then getting the high bit of
the result.  For registers this is always cheaper than using the carry
bit sequence; and if the comparison involves a constant, this is cheaper
than the sequence we previously generated in half of the cases (and the
same cost in the other cases).

After this, the only sequence left that is using the mfcr insn is the
one doing signed comparison of Pmode registers.

From-SVN: r231165

	PR middle-end/68570
	* gcc.dg/torture/pr68570.c: New test.

From-SVN: r231163

2015-12-02  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/68625
	* tree-cfgcleanup.c (cleanup_tree_cfg_bb): Do not call
	cleanup_control_flow_bb.
	(cleanup_tree_cfg_1): First perform cleanup_control_flow_bb
	on all BBs, then cleanup_tree_cfg_bb and finally iterate
	over the worklist doing both.

	* gcc.dg/torture/pr68625.c: New testcase.

From-SVN: r231162

The problem in the PR is that some i386 optabs FAIL when
optimising for size rather than speed.  The gimple level generally
needs access to this information before calling the generator,
so this patch adds a new hook to say whether an optab should
be used when optimising for size or speed.  It also has a "both"
option for cases where we want code that is optimised for both
size and speed.

I've passed the optab to the target hook because I think in most
cases that's more useful than the instruction code.  We could pass
both if there's a use for it though.

At the moment the match-and-simplify code doesn't have direct access
to the target block, so for now I've used "both" there.

Tested on x86_64-linux-gnu and powerpc64-linux-gnu.

gcc/
	PR tree-optimization/68432
	* coretypes.h (optimization_type): New enum.
	* doc/tm.texi.in (TARGET_OPTAB_SUPPORTED_P): New hook.
	* doc/tm.texi: Regenerate.
	* target.def (optab_supported_p): New hook.
	* targhooks.h (default_optab_supported_p): Declare.
	* targhooks.c (default_optab_supported_p): New function.
	* predict.h (function_optimization_type): Declare.
	(bb_optimization_type): Likewise.
	* predict.c (function_optimization_type): New function.
	(bb_optimization_type): Likewise.
	* optabs-query.h (convert_optab_handler): Define an overload
	that takes an optimization type.
	(direct_optab_handler): Likewise.
	* optabs-query.c (convert_optab_handler): Likewise.
	(direct_optab_handler): Likewise.
	* internal-fn.h (direct_internal_fn_supported_p): Take an
	optimization_type argument.
	* internal-fn.c (direct_optab_supported_p): Likewise.
	(multi_vector_optab_supported_p): Likewise.
	(direct_internal_fn_supported_p): Likewise.
	* builtins.c (replacement_internal_fn): Update call to
	direct_internal_fn_supported_p.
	* gimple-match-head.c (build_call_internal): Likewise.
	* tree-vect-patterns.c (vect_recog_pow_pattern): Likewise.
	* tree-vect-stmts.c (vectorizable_internal_function): Likewise.
	* tree.c (maybe_build_call_expr_loc): Likewise.
	* config/i386/i386.c (ix86_optab_supported_p): New function.
	(TARGET_OPTAB_SUPPORTED_P): Define.
	* config/i386/i386.md (asinxf2): Remove optimize_insn_for_size_p check.
	(asin<mode>2, acosxf2, acos<mode>2, log1pxf2, log1p<mode>2)
	(expNcorexf3, expxf2, exp<mode>2, exp10xf2, exp10<mode>2, exp2xf2)
	(exp2<mode>2, expm1xf2, expm1<mode>2, ldexpxf3, ldexp<mode>3)
	(scalbxf3, scalb<mode>3, rint<mode>2, round<mode>2)
	(<rounding_insn>xf2, <rounding_insn><mode>2): Likewise.

gcc/testsuite/
	* gcc.target/i386/pr68432-1.c: New test.
	* gcc.target/i386/pr68432-2.c: Likewise.
	* gcc.target/i386/pr68432-3.c: Likewise.

From-SVN: r231161

This patch makes it a compile-time error for an internal-fn optab
to FAIL.  There are certainly other optabs and patterns besides these
that aren't allowed to fail, but this at least deals with the immediate
point of controversy.

Tested normally on x86_64-linux-gnu.  Also tested by building one
configuration per cpu directory.  arc-elf and pdp11 didn't build
for unrelated reasons, but I checked that insn-emit.o built for
both without error.

gcc/
	* Makefile.in (GENSUPPORT_H): New macro.
	(build/gensupport.o, build/read-rtl.o, build/genattr.o)
	(build/genattr-common.o, build/genattrtab.o, build/genautomata.o)
	(build/gencodes.o, build/genconditions.o, build/genconfig.o)
	(build/genconstants.o, build/genextract.o, build/genflags.o)
	(build/gentarget-def.o): Use it.
	(build/genemit.o): Likewise.  Depend on internal-fn.def.
	* genopinit.c: Move block comment to optabs.def.
	(optab_tag, optab_def): Move to gensupport.h
	(pattern): Likewise, renaming to optab_pattern.
	(match_pattern): Move to gensupport.c
	(gen_insn): Use find_optab.
	(patterns, pattern_cmp): Replace pattern with optab_pattern.
	(main): Likewise.  Use num_optabs.
	* optabs.def: Add comment that was previously in genopinit.c.
	* gensupport.h (optab_tag): Moved from genopinit.c
	(optab_def): Likewise, expanding commentary.
	(optab_pattern): Likewise, after renaming from pattern.
	(optabs, num_optabs, find_optab): Declare.
	* gensupport.c (optabs): Moved from genopinit.c.
	(num_optabs): New variable.
	(match_pattern): Moved from genopinit.c.
	(find_optab): New function, extracted from genopinit.c:gen_insn.
	* genemit.c (nofail_optabs): New variable.
	(emit_c_code): New function.
	(gen_expand): Check whether the instruction is an optab that isn't
	allowed to fail.  Call emit_c_code.
	(gen_split): Call emit_c_code here too.
	(main): Initialize nofail_optabs.  Don't emit FAIL and DONE here.

From-SVN: r231160

gcc/ChangeLog:

2015-12-02  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* config/s390/predicates.md (const_mask_operand): New predicate.
	* config/s390/s390-builtins.def: Set a smaller bitmask for a few builtins.
	* config/s390/vector.md: Change predicate from immediate_operand
	to either const_int_operand or const_mask_operand.  Add special
	insn conditions on patterns which have to exclude certain values.
	* config/s390/vx-builtins.md: Likewise.

From-SVN: r231159

gcc/ChangeLog:

2015-12-02  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* config/s390/vector.md ("*vec_set<mode>"): Change shift count
	mode from DI to SI.

From-SVN: r231158

gcc/testsuite/ChangeLog:

2015-12-02  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* gcc.target/s390/zvector/vec-splat-2.c: New test.

gcc/ChangeLog:

2015-12-02  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* config/s390/s390-builtin-types.def: New builtin types added.
	* config/s390/s390-builtins.def: Add s390_vec_splat_* definitions.
	* config/s390/s390.c (s390_expand_builtin): Always truncate
	constants to the mode in the pattern.
	* config/s390/vecintrin.h: Let the vec_splat_* macros point to the
	respective builtin __builtin_s390_vec_splat_*.

From-SVN: r231157

gcc/ChangeLog:

2015-12-02  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* config/s390/s390-builtin-types.def: Sort builtin types.

From-SVN: r231156

gcc/ChangeLog:

2015-12-02  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* config/s390/s390-c.c (s390_get_vstring_flags): Invert the
	condition for the RT flag.

From-SVN: r231155

gcc/testsuite/ChangeLog:

2015-12-02  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* gcc.target/s390/vector/vec-vrepi-1.c: New test.

gcc/ChangeLog:

2015-12-02  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* config/s390/constraints.md ("jKK"): New constraint.
	* config/s390/s390.c (tm-constrs.h): Include for
	satisfies_constraint_*.
	(s390_legitimate_constant_p): Allow jKK constants.  Use
	satisfies_constraint_* also for the others.
	(legitimate_reload_vector_constant_p): Likewise.
	(print_operand): Allow h output modifier on vectors.
	* config/s390/vector.md ("mov<mode>"): Add vrepi.

From-SVN: r231154

gcc/ChangeLog:

2015-12-02  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* config/s390/vector.md ("*vec_splats<mode>"): Fix constraint
	latter I->K.

gcc/testsuite/ChangeLog:

2015-12-02  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* gcc.target/s390/zvector/vec-splat-1.c: New test.

From-SVN: r231153

gcc/ChangeLog:

2015-12-02  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* config/s390/s390.md ("bswap<mode>2"): Add support for strv and
	strvg.
	("bswaphi2"): New pattern.
	New splitter for HI reg-reg bswap.

gcc/testsuite/ChangeLog:

2015-12-02  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* gcc.target/s390/bswap-1.c (foo64c, foo32a, foo32c): New functions.
	* gcc.target/s390/bswaphi-1.c: New test.

From-SVN: r231152

gcc/testsuite/ChangeLog:

2015-12-02  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* lib/target-supports.exp: Add s390 and s390x to the list of long
	long atomic targets.

From-SVN: r231151

	PR driver/68029
	* opts-common.c (prune_options): Don't ignore -fdiagnostics-color
	if it is the first parameter.

From-SVN: r231150

gcc/testsuite/ChangeLog:

2015-12-02  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* gcc.dg/optimize-bswapdi-1.c: Force using -mzarch on s390 and
	s390x to enable 64 bit bswap patterns.
	* gcc.dg/optimize-bswapdi-2.c: Likewise.
	* gcc.dg/optimize-bswapdi-3.c: Likewise.
	* lib/target-supports.exp: Add a comment for s390.

From-SVN: r231149

gcc/testsuite/ChangeLog:

2015-12-02  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* gcc.dg/builtin-bswap-6a.c: Add -march=z900 for s390 and s390x in
	order to make -m31 work.
	* gcc.dg/optimize-bswapsi-1.c: Likewise.
	* gcc.dg/optimize-bswapsi-2.c: Likewise.

From-SVN: r231148

re PR c/68533 (bogus location for "warning: ‘struct s3’ declared inside parameter list will not be visible outside of this definition or declaration")

	PR c/68533
	* c-decl.c (get_parm_info): Use b->locus instead of input_location
	for diagnostics.

	* gcc.dg/pr68533.c: New test.

From-SVN: r231147

SVN commit r230979 always associates a loop's back-jump with the start
of the loop body.  This caused a regression for gcov with conditional
loops, because then the loop body appears to be covered twice per
iteration.

2015-12-02  Andreas Arnez  <arnez@linux.vnet.ibm.com>

	PR gcov-profile/68603
	* cp-gimplify.c (genericize_cp_loop): For the back-jump's location
	use the start of the loop body only if the loop is unconditional.

From-SVN: r231146

	PR ada/68169
	* s-oscons-tmplt.c: Generate pthread constants for RTEMS
	* s-osinte-rtems.ads: Declare pthread structs as opaque types in Ada

From-SVN: r231145

	PR go/65717
    compiler: Fix array reflection when len doesn't fit in unsigned long.
    
    This comes up when using a 32-bit host and a 64-bit target.
    
    Fixes https://gcc.gnu.org/PR65717.
    
    Reviewed-on: https://go-review.googlesource.com/17330

From-SVN: r231142

From-SVN: r231140

fptr.c (__canonicalize_funcptr_for_compare): Initialize fixup values if saved GOT address doesn't match runtime address.

	* config/pa/fptr.c (__canonicalize_funcptr_for_compare): Initialize
	fixup values if saved GOT address doesn't match runtime address.
	(fixup_branch_offset): Reorder list.

From-SVN: r231135

This patch adds support for simple cases where a vector
internal function returns wider results than the scalar
equivalent.  It punts on other cases.

Tested on powerpc64-linux-gnu and x86_64-linux-gnu.

gcc/
	PR tree-optimization/68577
	* tree-vect-stmts.c (simple_integer_narrowing): New function.
	(vectorizable_call): Restrict internal function handling
	to NONE and NARROW cases, using simple_integer_narrowing
	to test for the latter.  Add cost of narrowing operation
	and insert it where necessary.

gcc/testsuite/
	PR tree-optimization/68577
	* gcc.dg/vect/pr68577.c: New test.

From-SVN: r231131

2015-12-01  Andreas Tobler  <andreast@gcc.gnu.org>

    * config/rs6000/freebsd64.h (ELFv2_ABI_CHECK): Add new macro.
    (SUBSUBTARGET_OVERRIDE_OPTIONS): Use it to decide whether to set
    rs6000_current_abi to ABI_AIX or ABI_ELFv2.

From-SVN: r231129

re PR libffi/65726 (libffi fails to build when not bootstrapping: configure: error: C++ preprocessor "/lib/cpp" fails sanity check)

2015-12-01  Andreas Tobler  <andreast@gcc.gnu.org>

    PR libffi/65726
    * Makefile.def (lang_env_dependencies): Make libffi depend
    on cxx.
    * Makefile.in: Regenerate.

From-SVN: r231128

	gcc/
	* config/nvptx/nvptx-protos.h (nvptx_output_aligned_decl): Declare.
	* config/nvptx/nvptx.h (ASM_OUTPUT_ALIGNED_DECL_COMMON,
	ASM_OUTPUT_ALIGNED_DECL_LOCAL): Forward to nvptx_output_aligned_decl.
	* config/nvptx/nvptx.c (write_fn_marker, write_var_marker): New.
	(write_fn_proto, write_fn_proto_from_insn): Call write_fn_marker.
	(init_output_initializer): Call write_var_marker.
	(nvptx_output_aligned_decl): New.
	(nvptx_assemble_undefined_decl, nvptx_file_end): Call write_var_marker.

	gcc/testsuite/
	* gcc.target/nvptx/uninit-decl.c: New.

From-SVN: r231127

	* gcc.c-torture/execute/alias-1.c: New testcase.
	* c-common.c: Do not silently ignore -fstrict-aliasing changes.

From-SVN: r231125

	* lto-streamer-out.c (hash_tree): Do not stream TYPE_ALIAS_SET.
	* tree-streamer-out.c (pack_ts_type_common_value_fields): Do not
	stream TYPE_ALIAS_SET.
	* tree-streamer-in.c (unpack_ts_type_common_value_fields): Do not
	stream TYPE_ALIAS_SET.

	* lto.c (compare_tree_sccs_1): Do not compare TYPE_ALIAS_SET.

From-SVN: r231124

	* config/nvptx/nvptx.c (nvptx_function_arg_advance): Don't
	consider mode.

From-SVN: r231121

re PR tree-optimization/64769 (ICE: tree check: expected integer_cst, have parm_decl in simd_clone_clauses_extract, at omp-low.c:12503 with -fopenmp-simd)

	PR tree-optimization/64769
	* c-c++-common/gomp/pr64769.c: New test.

From-SVN: r231120

[gcc]

2015-12-01  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* config/rs6000/rs6000.c (const_load_sequence_p): Handle extra
	indirection for large and small code models.
	(adjust_vperm): Likewise.

[gcc/testsuite]

2015-12-01  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* gcc.target/powerpc/swaps-p8-22.c: New.

From-SVN: r231119

	gcc/
	* gimple-pretty-print.c (dump_gimple_omp_target): Add host_data
	support.
	* gimple.h (gf_mask): Add GF_OMP_TARGET_KIND_OACC_HOST_DATA.
	(is_gimple_omp_oacc): Add support for above.
	* gimplify.c (omp_region_type): Add ORT_ACC_HOST_DATA.
	(omp_notice_variable): Diagnose undefined implicit uses of
	use_device variables in offloaded regions.
	(gimplify_scan_omp_clauses): Add host_data, use_device
	support. Diagnose undefined mapping of use_device variables in
	OpenACC clauses.
	(gimplify_omp_workshare): Add host_data support.
	(gimplify_expr): Likewise.
	* omp-builtins.def (BUILT_IN_GOACC_HOST_DATA): New.
	* omp-low.c (lookup_decl_in_outer_ctx)
	(maybe_lookup_decl_in_outer_ctx): Add optional argument to skip
	host_data regions.
	(scan_sharing_clauses): Support use_device.
	(check_omp_nesting_restrictions): Support host_data.
	(expand_omp_target): Support host_data.
	(lower_omp_target): Skip over outer host_data regions when looking
	up decls. Support use_device.
	(make_gimple_omp_edges): Support host_data.
	* tree-nested.c (convert_nonlocal_omp_clauses): Add use_device
	clause.

	gcc/c/
	* c-parser.c (c_parser_omp_clause_name): Add use_device support.
	(c_parser_oacc_clause_use_device): New function.
	(c_parser_oacc_all_clauses): Add use_device support.
	(OACC_HOST_DATA_CLAUSE_MASK): New macro.
	(c_parser_oacc_host_data): New function.
	(c_parser_omp_construct): Add host_data support.
	* c-tree.h (c_finish_oacc_host_data): Add prototype.
	* c-typeck.c (c_finish_oacc_host_data): New function.
	(c_finish_omp_clauses): Add use_device support.

	gcc/cp/
	* cp-tree.h (finish_oacc_host_data): Add prototype.
	* parser.c (cp_parser_omp_clause_name): Add use_device support.
	(cp_parser_oacc_all_clauses): Add use_device support.
	(OACC_HOST_DATA_CLAUSE_MASK): New macro.
	(cp_parser_oacc_host_data): New function.
	(cp_parser_omp_construct): Add host_data support.
	(cp_parser_pragma): Add host_data support.
	* semantics.c (finish_omp_clauses): Add use_device support.
	(finish_oacc_host_data): New function.

	gcc/c-family/
	* c-pragma.c (oacc_pragmas): Add PRAGMA_OACC_HOST_DATA.
	* c-pragma.h (pragma_kind): Add PRAGMA_OACC_HOST_DATA.
	(pragma_omp_clause): Add PRAGMA_OACC_CLAUSE_USE_DEVICE.

	libgomp/
	* oacc-parallel.c (GOACC_host_data): New function.
	* libgomp.map (GOACC_host_data): Add to GOACC_2.0.1.
	* testsuite/libgomp.oacc-c-c++-common/host_data-1.c: New test.
	* testsuite/libgomp.oacc-c-c++-common/host_data-2.c: New test.
	* testsuite/libgomp.oacc-c-c++-common/host_data-3.c: New test.
	* testsuite/libgomp.oacc-c-c++-common/host_data-4.c: New test.
	* testsuite/libgomp.oacc-c-c++-common/host_data-5.c: New test.
	* testsuite/libgomp.oacc-c-c++-common/host_data-6.c: New test.


Co-Authored-By: Cesar Philippidis <cesar@codesourcery.com>
Co-Authored-By: James Norris <James_Norris@mentor.com>

From-SVN: r231118

	PR tree-optimization/67916
	* gcc.dg/torture/pr67916.c: New test.

From-SVN: r231117

re PR middle-end/68582 (-Wunused-function doesn't warn about unused static __attribute__((noreturn)) functions)

	PR middle-end/68582
	* cgraphunit.c (check_global_declaration): Only depend on TREE_THIS_VOLATILE
	for VAR_DECLs.

	* c-c++-common/pr68582.c: New test.

From-SVN: r231116