Cherry picked (and modified) from google-4_7 branch
	2012-12-26  Rong Xu  <xur@google.com>
	* common.opt (fprofile-update): Add new flag.
	* coretypes.h: Define enum profile_update.
	* doc/invoke.texi: Document -fprofile-update.
	* gcov-io.h: Declare GCOV_TYPE_ATOMIC_FETCH_ADD and
	GCOV_TYPE_ATOMIC_FETCH_ADD_FN.
	* tree-profile.c (gimple_init_edge_profiler): Generate
	also atomic profiler update.
	(gimple_gen_edge_profiler): Likewise.
	* g++.dg/gcov/gcov-threads-1.C: New test.

From-SVN: r239323

gcc/ChangeLog:
	* toplev.c (finalize): Set aux_info_file, asm_out_file, and
	stack_usage_file to NULL after fclose calls.

From-SVN: r239322

Extend computation of subreg_in_class to constants and plus expressions 
inside SUBREGs, before recursively calling push_reload. SYMBOL_REFs are
also CONSTANT_P, so remove explicit handling of SYMBOL_REFs.

gcc/ChangeLog

	PR target/71873
	* reload.c (push_reload): Compute subreg_in_class for
	subregs of constants and plus expressions. Remove special
	handling of SYMBOL_REFs.

gcc/testsuite/ChangeLog

	PR target/71873
	* gcc.target/avr/pr71873.c: New test.

From-SVN: r239321

The fallback part of HARD_REGNO_CALLER_SAVE_MODE, choose_hard_reg_mode,
returns DFmode for SImode when TARGET_E500_DOUBLE.  This confuses
lra when attempting to save ctr around a call.

	PR target/71680
	* config/rs6000/rs6000.h (HARD_REGNO_CALLER_SAVE_MODE): Return
	SImode for TARGET_E500_DOUBLE when given SImode.

From-SVN: r239317

	* gccgo.texi (Invoking gccgo): Document -fgo-optimize-allocs and
	-fgo-debug-escae.
	(Compiler Directives): New chapter.
	(Function Names): Describe using //go:linkname.  Suggest using
	-fgo-pkgpath rather than -fgo-prefix.

From-SVN: r239316

    
    Reviewed-on: https://go-review.googlesource.com/26652

From-SVN: r239315

From-SVN: r239314

    
    Implement the go:linkname compiler directive for functions (both
    function definitions and function declarations).  At least for now, give
    an error for code that tries to use go:linkname with a non-function.
    
    Reviewed-on: https://go-review.googlesource.com/26651

From-SVN: r239311

	* config/i3836/avx512fintrin.h (_mm512_cvtsepi64_epi32): Remove
	unused variable __O.

From-SVN: r239310

gcc/c-family/
	* c-common.c (c_common_attribute_table): vector_size affects type
	identity.
gcc/cp/
	* decl2.c (any_dependent_type_attributes_p): New.
	* pt.c (dependent_type_p_r, type_dependent_expression_p): Check it.
	* semantics.c (finish_id_expression): Check it.
	* typeck.c (finish_class_member_access_expr): Check it.

From-SVN: r239309

	* g++.dg/gcov/gcov-dump-1.C: New test.
	* g++.dg/gcov/gcov-dump-2.C: New test.

From-SVN: r239308

	* doc/gcov.texi: Change _gcov_dump to __gcov_dump and
	_gcov_reset to __gcov_reset.
	* doc/gcov-tool.texi: Fix typo.
	* libgcov-util.c: Fix typo and GNU coding style.

From-SVN: r239307

	* Makefile.in: Remove __gcov_indirect_call_profiler.
	* libgcov-profiler.c (__gcov_indirect_call_profiler): Remove
	function.
	* libgcov.h: And the declaration of the function.

From-SVN: r239306

	* value-prof.c (gimple_divmod_values_to_profile): Do not
	instrument MOD histogram if a value is not a SSA name.
	* gcc.dg/tree-prof/val-prof-9.c: New test.

From-SVN: r239305

	* gcc.dg/tree-prof/val-prof-8.c: New test.
	* value-prof.c (dump_histogram_value): Swap pow2 and non-pow2
	values.
	* libgcov-profiler.c (__gcov_pow2_profiler): Consider 0 as not
	power of two.

From-SVN: r239304

From-SVN: r239303

2016-08-09  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR bootstrap/72833
        * fixincl.tpl (version-compare): Fix generation with autogen 5.18.
        * inclhack.def (darwin_longjmp_noreturn): New fix.
        * fixincl.x: Regenerated.
        * tests/base/i386/setjmp.h [DARWIN_LONGJMP_NORETURN_CHECK]: new test.

From-SVN: r239301

gcc/

2016-08-04  Renlin Li  <renlin.li@arm.com>

	PR middle-end/64971
	* calls.c (prepare_call_address): Convert funexp to Pmode when
	necessary.
	* config/aarch64/aarch64.md (sibcall): Remove fix for PR 64971.
	(sibcall_value): Likewise.

From-SVN: r239300

	* class.c (check_abi_tags): Don't duplicate tags for conversion ops.

From-SVN: r239299

	* class.c (missing_abi_tags): New.
	(check_abi_tags): Don't check template. Add just_checking mode.
	* mangle.c (abi_flag_at_least, any_abi_below, equal_abi_tags): New.
	(sorted_abi_tags): Split out from write_abi_tags.
	(struct releasing_vec): New.
	(write_unqualified_name): Only look for the primary
	template for types.  Implement backward compatibility.

From-SVN: r239298

	PR c/7652
gcc/c-family/
	* c-ada-spec.c (dump_generic_ada_node): Add return.
gcc/
	* cselib.c (cselib_expand_value_rtx_1): Add return.
	* gengtype.c (dbgprint_count_type_at): Likewise.
	* hsa-gen.c (gen_hsa_insn_for_internal_fn_call): Likewise.
	* reg-stack.c (get_true_reg): Restructure to avoid fallthrough warning.

From-SVN: r239297

    
    CLONE_NEWNET is needed to compile the syscall tests on GNU/Linux.
    The symbol is not defined in the CentOS 5.11 header files.
    
    Patch from Uros Bizjak.
    
    Reviewed-on: https://go-review.googlesource.com/26630

From-SVN: r239296

2016-08-09  Martin Jambor  <mjambor@suse.cz>

        PR ipa/71981
        * ipa-polymorphic-call.c (get_dynamic_type): Bail out gracefully
        if instance is a MEM_REF.

testsuite/
        PR ipa/71981
        * gcc.dg/ipa/pr71981.c: New test.

From-SVN: r239294

	PR target/72843
	* config/i386/i386.md (*movtf_internal): Use
	lra_in_progress || reload_completed instead of !can_create_pseudo_p
	in the insn constraint.
	(*movxf_internal): Ditto.
	(*movdf_internal): Ditto.
	(*movsf_internal): Ditto.

From-SVN: r239293

	gcc/testsuite
	PR tree-optimization/33707
	* gcc.dg/vect/pr33707.c: New test.

From-SVN: r239292

	PR tree-optimization/72772
	* tree-ssa-loop-niter.c (loop_exits_before_overflow): Check equality
	for expanded base.

	gcc/testsuite
	PR tree-optimization/pr72772
	* gcc.dg/tree-ssa/pr72772.c: New test.

From-SVN: r239291

	PR tree-optimization/72772
	* tree-ssa-loop-niter.h (simplify_using_initial_conditions): Delete
	parameter STOP.
	* tree-ssa-loop-niter.c (tree_simplify_using_condition_1): Delete
	parameter STOP and update calls.  Move expand_simple_operations
	function call from here...
	(simplify_using_initial_conditions): ...to here.  Delete parameter
	STOP.
	(tree_simplify_using_condition): Delete parameter STOP.
	* tree-scalar-evolution.c (simple_iv_with_niters): Update call to
	simplify_using_initial_conditions.

From-SVN: r239290

	* constexpr.c (cxx_eval_constant_expression): Check
	COMPLETE_TYPE_P before calling is_really_empty_class.
	* class.c (is_really_empty_class): Don't call complete_type.

From-SVN: r239289

gcc/
	PR rtl-optimization/66669
	* gcc.dg/loop-8.c: Skip for MIPS due to extra invariants.

From-SVN: r239288

	* typeck.c (cp_build_addr_expr_1): Remove special *this handling.

From-SVN: r239285

    
    Rewrite the compiler directive support to recognize all the compiler
    directives implemented by the current gc compiler.  The directives other
    than go:linkname are now turned into GOPRAGMA flags attached to a
    function or function declaration.  The go:linkname directive is turned
    into a map attached to the Lex object.  No new directives are actually
    implemented yet, they are just recognized.
    
    Reviewed-on: https://go-review.googlesource.com/26610

From-SVN: r239282

gcc/
	PR c/65345
	* config/mips/mips.c (mips_atomic_assign_expand_fenv):
	Use create_tmp_var_raw instead of create_tmp_var.

From-SVN: r239278

2016-08-09  Richard Biener  <rguenther@suse.de>

	* tree-ssa-threadbackward.c (profitable_jump_thread_path):
        Treat same SSA names related.

From-SVN: r239276

re PR tree-optimization/72824 (Signed floating point zero semantics broken at optimization level -O3 (tree-loop-distribute-patterns))

	PR tree-optimization/72824
	* tree-loop-distribution.c (const_with_all_bytes_same): Verify
	real_zerop is not negative.

	* gcc.c-torture/execute/ieee/pr72824.c: New test.

From-SVN: r239275

re PR tree-optimization/71802 (gcc ICE at -O3 on valid code on x86_64-linux-gnu in expand_LOOP_VECTORIZED)

2016-08-09  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/71802
	* tree-cfgcleanup.c (cleanup_tree_cfg_bb): Make sure to catch
	all merge opportunities with the predecessor.

	* gcc.dg/torture/pr71802.c: New testcase.

From-SVN: r239274

re PR target/68273 (Wrong code on mips/mipsel due to (invalid?) peeking at alignments in function_arg.)

2016-08-09  Richard Biener  <rguenther@suse.de>

	PR ipa/68273
	* ipa-prop.c (ipa_modify_formal_parameters): Build
	parameter types with natural alignment also for the
	over-aligned case.

From-SVN: r239273

	PR c++/72809
	* rtti.c (get_pseudo_ti_index): Return TK_CLASS_TYPE for
	builtin aggregate types without TYPE_BINFO.

	* g++.dg/eh/stdarg1.C: New test.

From-SVN: r239272

gcc/c-family/
	* c-cppbuiltin.c (c_cpp_builtins): Update __cpp_constexpr for
	C++17 constexpr lambdas.
gcc/cp/
	* class.c (finalize_literal_type_property): Handle lambdas.
	* constexpr.c (is_valid_constexpr_fn): Likewise.  No longer static.
	(explain_invalid_constexpr_fn, cxx_eval_call_expression): Handle
	lambdas.
	(cxx_eval_constant_expression): Handle capture proxy.
	(var_in_constexpr_fn): Don't check for C++14.
	(var_in_maybe_constexpr_fn): New.
	(potential_constant_expression_1): Use it.  Check DECL_EXPR for
	declarations not allowed in constexpr function.
	* decl.c (make_rtl_for_nonlocal_decl): Use var_in_maybe_constexpr_fn.
	(finish_function): Set DECL_DECLARED_CONSTEXPR_P on lambda members.
	* lambda.c (begin_lambda_type): Set CLASSTYPE_LITERAL_P.
	(maybe_add_lambda_conv_op): Clear thunk CALL_EXPR location.
	(lambda_static_thunk_p): New.
	* parser.c (cp_keyword_starts_decl_specifier_p): Add RID_CONSTEXPR.
	(CP_PARSER_FLAGS_ONLY_MUTABLE_OR_CONSTEXPR): New enumerator.
	(cp_parser_decl_specifier_seq): Handle it.
	(cp_parser_lambda_declarator_opt): Use cp_parser_decl_specifier_seq.
	* pt.c (instantiate_class_template_1): Set CLASSTYPE_LITERAL_P.
	(tsubst_copy_and_build) [CALL_EXPR]: Propagate CALL_FROM_THUNK_P.
	* error.c (dump_function_decl): Check TFF_NO_TEMPLATE_BINDINGS.
	(dump_expr) [FUNCTION_DECL]: Pass it.

From-SVN: r239268

	PR c++/67131
	* class.c (is_really_empty_class): Call complete_type.
	* constexpr.c (cxx_eval_constant_expression): Check
	is_really_empty_class.
	(potential_constant_expression_1): Likewise.  Check for error type.

From-SVN: r239267

This patch fixes an bootstrap error with autoprofiledbootstrap
due to uninitiliazed variables, because the compiler cannot
figure out they don't need to be initialized in an error path.
Just always initialize them.

gcc/:

2016-08-08  Andi Kleen  <ak@linux.intel.com>

	* tree-vrp.c (get_single_symbol): Always initialize inv and neg.

From-SVN: r239266