2016-10-07  Richard Biener  <rguenther@suse.de>

	* tree-ssa-propagate.c (replace_phi_args_in): Remove no longer
	required hack.
	(substitute_and_fold_dom_walker::before_dom_children):
	Substitute and fold before pass specific folding to avoid
	feeding that with SSA names that will be later released.
	* tree-ssa-ccp.c (get_value_for_expr): Guard for new SSA names
	introduced by folding and visited by evaluate_stmt called during
	ccp_fold_stmt.
	(likely_value): Likewise.
	(evaluate_stmt): Likewise.
	* tree-vrp.c (simplify_truth_ops_using_ranges): Fold modified stmt.
	(simplify_div_or_mod_using_ranges): Likewise.
	(simplify_min_or_max_using_ranges): Likewise.
	(simplify_abs_using_ranges): Likewise.
	(simplify_conversion_using_ranges): Likewise.
	(simplify_float_conversion_using_ranges): Likewise.
	(simplify_stmt_using_ranges): Likewise.

	* gcc.dg/tree-ssa/vrp01.c: Adjust.
	* gcc.dg/tree-ssa/vrp34.c: Likewise.

From-SVN: r240865

	* gimplify.c (should_warn_for_implicit_fallthrough): Check for
	FALLTHROUGH_LABEL_P here...
	(warn_implicit_fallthrough_r): ...not here.

	* c-c++-common/Wimplicit-fallthrough-22.c: New test.

From-SVN: r240864

c/
	PR c++/69733
	* c-decl.c (smallest_type_quals_location): New static function.
	(grokdeclarator): Try to find the correct location for an ignored
	qualifier.
cp/
	PR c++/69733
	* decl.c (grokdeclarator): Try to find the correct location for an
	ignored qualifier.
testsuite/
	PR c++/69733
	* c-c++-common/pr69733.c: New test.
	* gcc.dg/pr69733.c: New test.
	* gcc.target/i386/pr69733.c: New test.

From-SVN: r240863

	PR tree-optimization/77880
	* expr.c (by_pieces_ninsns): Use unsigned HOST_WIDE_INT where
	necessary.

From-SVN: r240862

	PR c++/77803
	* gimplify.c (last_stmt_in_scope): Add check for FALLTHROUGH ().

	* g++.dg/warn/Wimplicit-fallthrough-1.C: New test.

From-SVN: r240861

2016-10-07  Richard Biener  <rguenther@suse.de>

	* bitmap.h: Document constraints on bitmap modification while
	iterating over it.

From-SVN: r240860

2016-10-07  Richard Biener  <rguenther@suse.de>

	* bitmap.c (bitmap_elem_to_freelist): Set indx to -1.
	* bitmap.h (bmp_iter_set): When advancing to the next element
	check that we didn't remove the current one.
	(bmp_iter_and): Likewise.
	(bmp_iter_and_compl): Likewise.
	* tree-ssa.c (release_defs_bitset): Do not remove worklist bit
	we currently iterate on but keep a one-level queue.
	* sched-deps.c (remove_from_deps): Do not clear current bit
	but keep a one-level queue.

From-SVN: r240859

	PR tree-optimization/77664
	* tree-ssa-reassoc.c (update_range_test): Also clear low and high
	for the other ranges.
	(optimize_range_tests_diff): Fix up formatting.
	(optimize_range_tests_var_bound): New function.
	(optimize_range_tests): Use it.

	* gcc.dg/tree-ssa/pr77664.c: New test.
	* gcc.dg/pr77664.c: New test.

From-SVN: r240858

	* coverage.c (build_gcov_exit_decl): Fix priority what
	should be really 99.

From-SVN: r240857

	* lambda.c (maybe_add_lambda_conv_op): Set default value.

From-SVN: r240856

gimple-low.c (lower_gimple_bind): Clear DECL_CHAIN of vars in gimple_bind_vars but not in BLOCK_VARS.

2016-10-07  Richard Biener  <rguenther@suse.de>

	* gimple-low.c (lower_gimple_bind): Clear DECL_CHAIN of
	vars in gimple_bind_vars but not in BLOCK_VARS.

From-SVN: r240855

2016-10-07  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/77879
	* tree-ssa-structalias.c (handle_const_call): Properly handle
	NRV return slots.
	(handle_pure_call): Likewise.

From-SVN: r240854

    
    During the lowering phase, the variable arguments to a varargs call are
    packaged up into a temporary slice object; the storage for this slice
    was being unconditionally allocated on the heap.  Heap allocation is not
    necessary, however, if the varargs call correspond to an "append", since
    the append runtime routine only reads the slice storage (as opposed to
    stashing away the storage pointer). Enhance the lowering code to keep
    the slice storage on the stack for append() calls, to improve
    performance.
    
    Addresses issue golang/go#17304.
    
    Reviewed-on: https://go-review.googlesource.com/30136

From-SVN: r240853

	* config/rs6000/rs6000.c (rs6000_elf_asm_out_constructor)
	(rs6000_elf_asm_out_destructor): increase size of buf to avoid
	possible overflow.

From-SVN: r240852

2016-10-06  Louis Krupp <louis.krupp@zoho.com>

	* gfortran.dg/pr69955.f90: New test.

2016-10-06  Louis Krupp  <louis.krupp@zoho.com>

	PR fortran/69955
	* trans-array.c (gfc_conv_expr_descriptor): Don't allocate
	components if it's not necessary.

From-SVN: r240851

	PR fortran/57910
	* gfortran.dg/pr57910.f90: New test.

2016-10-05  Louis Krupp  <louis.krupp@zoho.com>

	PR fortran/57910
	* trans-expr.c (gfc_add_interface_mapping): Don't try to
	dereference call-by-value scalar argument

From-SVN: r240850

From-SVN: r240849

2016-10-06  Andrew Pinski  <apinski@cavium.com>

        * config/aarch64/aarch64-cores.def: Add a comment before each
        set of cores.

From-SVN: r240846

	* call.c (build_temp, convert_like_real): Don't re-copy
	TARGET_EXPR.  Handle packed fields.
	(build_x_va_arg): Wrap it in a TARGET_EXPR.
	(build_over_call): Add sanity check.
	* cvt.c (early_elide_copy): New.
	(ocp_convert): Use it.
	* except.c (build_throw): Use it.
	* init.c (get_nsdmi): Put back the TARGET_EXPR.
	(expand_default_init): Call early_elide_copy.
	* typeck.c (cp_build_modify_expr): Call early_elide_copy.

From-SVN: r240845

	* doc/xml/manual/status_cxx2011.xml: Update status.
	* include/std/scoped_allocator (__outer_allocator_t, __outermost_type):
	New helpers for recursive OUTERMOST.
	(__outermost): Use __outermost_type::_S_outermost.
	(__do_outermost, scoped_allocator_adaptor::__outermost_type): Remove.
	(scoped_allocator_adaptor::__outermost_alloc_traits): Use new
	__outermost_type helper.
	* testsuite/20_util/scoped_allocator/outermost.cc: New test.

From-SVN: r240844

	Implement P0258R2 - helper for C++17
	std::has_unique_object_representations trait
c-family/
	* c-common.h (enum rid): Add RID_HAS_UNIQUE_OBJ_REPRESENTATIONS.
	* c-common.c (c_common_reswords): Add
	__has_unique_object_representations.
cp/
	* cp-tree.h (enum cp_trait_kind): Add
	CPTK_HAS_UNIQUE_OBJ_REPRESENTATIONS.
	(struct lang_type_class): Add unique_obj_representations
	and unique_obj_representations_set bitfields.
	(CLASSTYPE_UNIQUE_OBJ_REPRESENTATIONS,
	CLASSTYPE_UNIQUE_OBJ_REPRESENTATIONS_SET): Define.
	(type_has_unique_obj_representations): Declare.
	* parser.c (cp_parser_primary_expression): Handle
	RID_HAS_UNIQUE_OBJ_REPRESENTATIONS.
	(cp_parser_trait_expr): Likewise.  Formatting fix.
	* semantics.c (trait_expr_value, finish_trait_expr): Handle
	CPTK_HAS_UNIQUE_OBJ_REPRESENTATIONS.
	* tree.c (type_has_unique_obj_representations): New function.
	(record_has_unique_obj_representations): New function.
	* cxx-pretty-print.c (pp_cxx_trait_expression): Handle
	CPTK_HAS_UNIQUE_OBJ_REPRESENTATIONS.
testsuite/
	* g++.dg/cpp1z/has-unique-obj-representations1.C: New test.
	* g++.dg/cpp1z/has-unique-obj-representations2.C: New test.

From-SVN: r240843

Fix PR77862
gcc/testsuite/ChangeLog:

2016-10-06  Kugan Vivekanandarajah  <kuganv@linaro.org>

	PR tree-optimization/77862
	* gcc.dg/pr77862.c: New test.

gcc/ChangeLog:

2016-10-06  Kugan Vivekanandarajah  <kuganv@linaro.org>

	PR tree-optimization/77862
	* tree-vrp.c (add_equivalence): Use get_value_range so that
	num_vr_values is checked before accessing vr_values.

From-SVN: r240842

Handle POINTER_TYPE_P in EVRP
gcc/ChangeLog:

2016-10-06  Kugan Vivekanandarajah  <kuganv@linaro.org>

	* tree-vrp.c (evrp_dom_walker::before_dom_children): Handle
	  POINTER_TYPE_P.


gcc/testsuite/ChangeLog:

2016-10-06  Kugan Vivekanandarajah  <kuganv@linaro.org>

	* gcc.dg/tree-ssa/evrp4.c: New test.

From-SVN: r240841

	* go-gcc.cc (Gcc_backend::stack_allocation_expression): Clear the
	returned memory.

From-SVN: r240840

	PR tree-optimization/71661
	* tree-cfgcleanup.c (remove_forwarder_block_with_phi): Handle case when
	removal of a forwarder exposes a new natural loop.

	PR tree-optimization/71661
	* gcc.dg/tree-ssa/pr71661.c: New test.

From-SVN: r240836

From-SVN: r240835

	* config/i386/sse.md (andnot<mode>3): Add FALLTHRU comments.
	Introduce ssesuffix variable.
	(<mask_codefor><code><mode>3<mask_name>): Ditto.
	(*<code><mode>3): Ditto.

From-SVN: r240834

	* postreload.c (reload_cse_simplify): Skip also USE when detecting
	noop move.

From-SVN: r240833

re PR tree-optimization/77855 (wrong code at -O3 on x86_64-linux-gnu (in both 32-bit and 64-bit modes))

2016-10-06  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/77855
	* tree-ssa-pre.c (prune_clobbered_mems): Queue exprs to remove
	instead of removing the current item while iterating over the set
	which is not safe.

	* gcc.dg/torture/pr77855.c: New testcase.

From-SVN: r240832

	PR target/77759
	* config/sparc/sparc.c (classify_data_t): Remove int_regs field.
	(classify_registers): Don't set it
	(function_arg_slotno): Don't initialize and test it.  Tidy up.

Co-Authored-By: Eric Botcazou <ebotcazou@adacore.com>

From-SVN: r240830

2016-10-06  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/77839
	* tree-ssa-sccvn.c (set_ssa_val_to): Forbid value -> constant value
	lattice transition.

	* gcc.dg/torture/pr77839.c: New testcase.

From-SVN: r240829

	* gcc.c: Set -fprofile-update=atomic when profiling is
	enabled and -pthread is set.  Warn when one combines
	-pthread and -fprofile-update=single for an app using
	profiling code.

From-SVN: r240828

	PR bootstrap/77788
	* expmed.h (mul_highpart_cost_ptr): Add an gcc_assert.
	* gimple-ssa-strength-reduction.c (slsr_process_cast):
	Initialize a pointer to NULL.
	(slsr_process_copy): Likewise.
	* input.c (location_get_source_line): Likewise.
	* tree-ssa-ccp.c (optimize_atomic_bit_test_and): Likewise.

From-SVN: r240827

    
    There was a bug in the escape analysis that would cause
    the slice implicitly created to hold varargs parameters to always
    escape, as well as the appended to slice argument.  The intended
    behavior was that the elements of the appendee and appended to
    slice would escape to the heap.  Alongside of these issues,
    the varargs slice would also have a chance to be initialized to an
    invalid memory location if it were stack-allocated.  This has been
    fixed as well.
    
    Reviewed-on: https://go-review.googlesource.com/30450

From-SVN: r240826

From-SVN: r240824

From-SVN: r240823

	* cvt.c (ocp_convert): Don't re-copy a TARGET_EXPR in C++17.

From-SVN: r240820

	* call.c (reference_binding): Fix binding to member of temporary.

From-SVN: r240819

From-SVN: r240818

Delete x86 pcommit instruction support, which has been deprecated:

https://software.intel.com/en-us/blogs/2016/09/12/deprecate-pcommit-instruction

gcc/

	* common/config/i386/i386-common.c (OPTION_MASK_ISA_PCOMMIT_UNSET,
	OPTION_MASK_ISA_PCOMMIT_SET): Deleted definitions.
	(ix86_handle_option): Deleted handle of OPT_mpcommit.
	* config.gcc: Deleted pcommitintrin.h
	* config/i386/pcommitintrin.h: Deleted file.
	* config/i386/cpuid.h (bit_PCOMMIT): Deleted.
	* config/i386/driver-i386.c (host_detect_local_cpu): Deleted pcommit
	detection.
	* config/i386/i386-c.c (ix86_target_macros_internal): Deleted define
	__PCOMMIT__.
	* config/i386/i386.c (ix86_target_string): Deleted -mpcommit.
	(PTA_PCOMMIT): Deleted define.
	(ix86_option_override_internal): Deleted handle of option.
	(ix86_valid_target_attribute_inner_p): Deleted pcommit.
	* config/i386/i386-builtin.def (IX86_BUILTIN_PCOMMIT,
	__builtin_ia32_pcommit): Deleted.
	* config/i386/i386.h (TARGET_PCOMMIT, TARGET_PCOMMIT_P): Deleted.
	* config/i386/i386.md (unspecv): Deleted UNSPECV_PCOMMIT.
	(pcommit): Deleted instruction.
	* config/i386/i386.opt: Mention -mpcommit deprecation.
	* config/i386/x86intrin.h: Deleted inclusion of pcommitintrin.h.

gcc/testsuite/

	* gcc.target/i386/pcommit-1.c: Deleted.
	* gcc.target/i386/sse-12.c: Deleted -pcommit option.
	* gcc.target/i386/sse-13.c: Ditto.
	* gcc.target/i386/sse-14.c: Ditto.
	* gcc.target/i386/sse-22.c: Ditto.
	* gcc.target/i386/sse-23.c: Ditto.
	* g++.dg/other/i386-2.C: Ditto.

From-SVN: r240816