* cp-tree.h (IF_STMT_CONSTEXPR_P): New.
	* name-lookup.c (push_to_top_level, pop_from_top_level_1): Handle it.
	* parser.h (struct cp_parser): Add in_discarded_stmt field.
	* parser.c (cp_parser_selection_statement): Handle 'if constexpr'.
	(cp_parser_jump_statement): Avoid deducing from a discarded return.
	* pt.c (tsubst_expr): Only instantiate taken branch of constexpr if.
	* semantics.c (begin_if_stmt): Set the binding level this_entity.
	(finish_if_stmt_cond): Require the condition of a
	constexpr if to be constant.
	* decl.c (level_for_constexpr_if): New.
	(named_label_entry): Add in_constexpr_if field.
	(poplevel_named_label_1): Set it.
	(check_goto): Check it.
	(check_previous_goto_1): Check level_for_constexpr_if.

From-SVN: r239338

gcc/ChangeLog:

2016-08-10  Kelvin Nilsen  <kelvin@gcc.gnu.org>

	* config/rs6000/altivec.h (vec_extract_exp): New macro.
	(vec_extract_sig): New macro.
	(vec_insert_exp): New macro.
	(vec_test_data_class): New macro.
	(scalar_extract_exp): New macro.
	(scalar_extract_sig): New macro.
	(scalar_insert_exp): New macro.
	(scalar_test_data_class): New macro.
	(scalar_test_neg): New macro.
	(scalar_cmp_exp_gt): New macro.
	(scalar_cmp_exp_lt): New macro.
	(scalar_cmp_exp_eq): New macro.
	(scalar_cmp_exp_unordered): New macro.
	* config/rs6000/predicates.md (u7bit_cint_operand): New predicate
	to enforce constraint that operand is a 7-bit unsigned literal.
	* config/rs6000/rs6000-builtin.def (BU_P9V_64BIT_VSX_1): New macro
	for power9 built-ins.
	(BU_P9V_VSX_2): Likewise.
	(BU_P9V_64BIT_VSX_2): Likewise.
	(VSEEDP): Add scalar extract exponent support.
	(VSEESP): Add scalar extract signature support.
	(VSTDCNDP): Add scalar test negative support.
	(VSTDCNSP): Likewise.
	(VSIEDP): Add scalar insert exponent support.
	(VSCEDPGT): Add scalar compare exponent greater than support.
	(VSCEDPLT): Add scalar compare exponent less than support.
	(VSCEDPEQ): Add scalar compare exponent test-for-equality support.
	(VSCEDPUO): Add scalar compare exponent test-for-unordered support.
	(VSTDCDP): Add scalar test data class support.
	(VSTDCSP): Likewise.
	(VSEEDP): Add overload support for scalar extract exponent
	operation.
	(VSESDP): Add overload support for scalar extract signature
	operation.
	(VSTDCN): Add overload support for scalar test negative
	operation.
	(VSTDCNDP): Add overload support for scalar test negative
	operation.
	(VSTDCNSP): Add overload support for scalar test negative
	operation.
	(VSIEDP): Add overload support for scalar insert exponent
	operation.
	(VSTDC): Add overload support for scalar test data class
	operation.
	(VSTDCDP): Add overload support for scalar test data class
	operation.
	(VSTDCSP): Add overload support for scalar test data class
	opreation.
	(VSCEDPGT): Add overload support for scalar compare exponent
	greater than operation.
	(VSCEDPLT): Add overload support for scalar compare exponent
	less than operation.
	(VSCEDPEQ): Add overload support for scalar compare exponent
	test-for-equality operation.
	(VSCEDPUO): Add overload support for scalar compare exponent
	test-for-unordered operation.
	(VEEDP): Add vector extract exponent support.
	(VEESP): Likewise.
	(VESDP): Add vector extract significand support.
	(VESSP): Likewise.
	(VIEDP): Add vector insert exponent support.
	(VIESP): Likewise.
	(VTDCDP): Add vector test data class support.
	(VTDCSP): Likewise.
	(VES): Add overload support for vector extract significand operation.
	(VESDP): Likewise.
	(VESSP): Likewise
	(VEE): Add overload support for vector extract exponent operation.
	(VEEDP): Likewise.
	(VEESP): Likewise.
	(VTDC): Add overload support for vector test data class operation.
	(VTDCDP): Likewise.
	(VTDCSP): Likewise.
	(VIE): Add overload support for vector insert exponent operation.
	(VIEDP): Likewise.
	(VIESP): Likewise.
	* config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Add
	overloaded binary floating point functions.
	(altivec_resolve_overloaded_builtin): Improve error messages to
	distinguish between functions not supported in the current
	compiler configuration and functions that were invoked with an
	invalid parameter combination, and include the built-in function
	name in both error messages.
	* config/rs6000/rs6000-protos.h (rs6000_overloaded_builtin_name):
	New prototype.
	* config/rs6000/rs6000.c (rs6000_overloaded_builtin_name): New
	function.
	(rs6000_expand_binop_builtin): Add check to enforce that argument
	2 of the test data class operations is a 7-bit unsigned literal.
	(rs6000_invalid_builtin): Add code to issue an error message if a
	built-in function that requires the power9_vector and -m32
	command-line options is compiled without these options.
	* config/rs6000/vsx.md (UNSPEC_VSX_SXEXPDP): New value.
	(UNSPEC_VSX_SXSIGDP): New value.
	(UNSPEC_VSX_SXSIGPDP): New value.
	(UNSPEC_VSX_SIEXPDP): New value.
	(UNSPEC_VSX_SCMPEXPDP): New value.
	(UNSPEC_VSX_STSTDC): New value.
	(UNSPEC_VSX_VXEXP): New value.
	(UNSPEC_VSX_VXSIG): New value.
	(UNSPEC_VSX_VIEXP): New value.
	(UNSPEC_VSX_VTSTDC): New value.
	(xsxexpdp): New insn for scalar extract exponent.
	(xsxsigdp): New insn for scalar extract significand.
	(xsiexpdp): New insn for scalar insert exponent.
	(xscmpexpdp_<code>): New expansion for scalar compare exponents.
	(*xscmpexpdp): New insn for scalar compare exponents.
	(xststdc<Fvsx): New expansion for both single- and
	double-precision scalar test data class operations.
	(xststdcneg<Fvsx>): New expansion for both single- and
	double-precision scalar test for negative value operations.
	(*xststdc<Fvsx>): New insn for scalar test data class
	operation.
	(xvxexp<VSs>): New insn for single- and double-precision
	vector extract exponent operation.
	(xvxsig<VSs>): New insn for single- and double-precision
	vector extract significand operation.
	(xviexp<VSs>): New insn for single- and double-precision
	vector insert exponent operation.
	(xvtstdc<VSs>): New insn for single- and double-precision
	vector test data class operation.
	* doc/extend.texi (PowerPC AltiVec Built-in Functions): Document
	built-in functions to represent the Power9 binary floating-point
	support instructions.

gcc/testsuite/ChangeLog:

2016-08-10  Kelvin Nilsen  <kelvin@gcc.gnu.org>

	* gcc.target/powerpc/bfp/bfp.exp: New file.
	* gcc.target/powerpc/bfp/scalar-cmp-exp-eq-0.c: New test.
	* gcc.target/powerpc/bfp/scalar-cmp-exp-eq-1.c: New test.
	* gcc.target/powerpc/bfp/scalar-cmp-exp-eq-2.c: New test.
	* gcc.target/powerpc/bfp/scalar-cmp-exp-gt-0.c: New test.
	* gcc.target/powerpc/bfp/scalar-cmp-exp-gt-1.c: New test.
	* gcc.target/powerpc/bfp/scalar-cmp-exp-gt-2.c: New test.
	* gcc.target/powerpc/bfp/scalar-cmp-exp-lt-0.c: New test.
	* gcc.target/powerpc/bfp/scalar-cmp-exp-lt-1.c: New test.
	* gcc.target/powerpc/bfp/scalar-cmp-exp-lt-2.c: New test.
	* gcc.target/powerpc/bfp/scalar-cmp-exp-unordered-0.c: New test.
	* gcc.target/powerpc/bfp/scalar-cmp-exp-unordered-1.c: New test.
	* gcc.target/powerpc/bfp/scalar-cmp-exp-unordered-2.c: New test.
	* gcc.target/powerpc/bfp/scalar-extract-exp-0.c: New test.
	* gcc.target/powerpc/bfp/scalar-extract-exp-1.c: New test.
	* gcc.target/powerpc/bfp/scalar-extract-exp-2.c: New test.
	* gcc.target/powerpc/bfp/scalar-extract-sig-0.c: New test.
	* gcc.target/powerpc/bfp/scalar-extract-sig-1.c: New test.
	* gcc.target/powerpc/bfp/scalar-extract-sig-2.c: New test.
	* gcc.target/powerpc/bfp/scalar-insert-exp-0.c: New test.
	* gcc.target/powerpc/bfp/scalar-insert-exp-1.c: New test.
	* gcc.target/powerpc/bfp/scalar-insert-exp-2.c: New test.
	* gcc.target/powerpc/bfp/scalar-test-data-class-0.c: New test.
	* gcc.target/powerpc/bfp/scalar-test-data-class-1.c: New test.
	* gcc.target/powerpc/bfp/scalar-test-data-class-2.c: New test.
	* gcc.target/powerpc/bfp/scalar-test-data-class-3.c: New test.
	* gcc.target/powerpc/bfp/scalar-test-data-class-4.c: New test.
	* gcc.target/powerpc/bfp/scalar-test-data-class-5.c: New test.
	* gcc.target/powerpc/bfp/scalar-test-data-class-6.c: New test.
	* gcc.target/powerpc/bfp/scalar-test-data-class-7.c: New test.
	* gcc.target/powerpc/bfp/scalar-test-neg-0.c: New test.
	* gcc.target/powerpc/bfp/scalar-test-neg-1.c: New test.
	* gcc.target/powerpc/bfp/scalar-test-neg-2.c: New test.
	* gcc.target/powerpc/bfp/scalar-test-neg-3.c: New test.
	* gcc.target/powerpc/bfp/vec-extract-exp-0.c: New test.
	* gcc.target/powerpc/bfp/vec-extract-exp-1.c: New test.
	* gcc.target/powerpc/bfp/vec-extract-exp-2.c: New test.
	* gcc.target/powerpc/bfp/vec-extract-exp-3.c: New test.
	* gcc.target/powerpc/bfp/vec-extract-sig-0.c: New test.
	* gcc.target/powerpc/bfp/vec-extract-sig-1.c: New test.
	* gcc.target/powerpc/bfp/vec-extract-sig-2.c: New test.
	* gcc.target/powerpc/bfp/vec-extract-sig-3.c: New test.
	* gcc.target/powerpc/bfp/vec-insert-exp-0.c: New test.
	* gcc.target/powerpc/bfp/vec-insert-exp-1.c: New test.
	* gcc.target/powerpc/bfp/vec-insert-exp-2.c: New test.
	* gcc.target/powerpc/bfp/vec-insert-exp-3.c: New test.
	* gcc.target/powerpc/bfp/vec-test-data-class-0.c: New test.
	* gcc.target/powerpc/bfp/vec-test-data-class-1.c: New test.
	* gcc.target/powerpc/bfp/vec-test-data-class-2.c: New test.
	* gcc.target/powerpc/bfp/vec-test-data-class-3.c: New test.
	* gcc.target/powerpc/bfp/vec-test-data-class-4.c: New test.
	* gcc.target/powerpc/bfp/vec-test-data-class-5.c: New test.
	* gcc.target/powerpc/bfp/vec-test-data-class-6.c: New test.
	* gcc.target/powerpc/bfp/vec-test-data-class-7.c: New test.

From-SVN: r239334

    
    A new GCC warning, -Wimplicit-fallthrough, detected these three cases
    where a switch case falls through to another.  One of them looks like
    a bug, so I fixed it; the two other look like intended fall throughs
    so I just added a "fall through" comment to suppress the GCC warning.
    
    Bootstrapped and ran Go testsuite on x86_64-pc-linux-gnu.
    
    Reviewed-on: https://go-review.googlesource.com/26695

From-SVN: r239332

From-SVN: r239330

	gcc/testsuite
	* lib/target-supports.exp (check_effective_target_vect_cond_mixed):
	Add aarch64*-*-*.

From-SVN: r239329

	* config/aarch64/iterators.md (V_cmp_mixed, v_cmp_mixed): New.
	* config/aarch64/aarch64-simd.md (<su><maxmin>v2di3): Call
	gen_vcondv2div2di instead of gen_aarch64_vcond_internalv2div2di.
	(aarch64_vcond_internal<mode><mode>): Delete pattern.
	(aarch64_vcond_internal<VDQF_COND:mode><VDQF:mode>): Ditto.
	(vcond<v_cmp_result><mode>): Ditto.
	(vcond<mode><mode>): Re-implement using vec_cmp and vcond_mask.
	(vcondu<mode><mode>): Ditto.
	(vcond<v_cmp_mixed><mode>): New pattern.
	(vcondu<mode><v_cmp_mixed>): New pattern.
	(aarch64_cmtst<mode>): Revise comment using aarch64_vcond instead
	of aarch64_vcond_internal.

	gcc/testsuite
	* gcc.target/aarch64/simd/vcond-ne.c: New test.

From-SVN: r239328

	* config/aarch64/aarch64-simd.md (vec_cmp<mode><mode>): New pattern.
	(vec_cmp<mode><v_cmp_result>): New pattern.
	(vec_cmpu<mode><mode>): New pattern.
	(vcond_mask_<mode><v_cmp_result>): New pattern.

Co-Authored-By: Bin Cheng <bin.cheng@arm.com>
Co-Authored-By: Renlin Li <renlin.li@arm.com>

From-SVN: r239327

Fix PR tree-optimization/71734

2016-08-10  Yuri Rumyantsev  <ysrumyan@gmail.com>

	PR tree-optimization/71734
	* tree-ssa-loop-im.c (ref_indep_loop_p): Add new argument
	REF_LOOP, invoke ref_indep_loop_p_1.
	(outermost_indep_loop): Pass LOOP argumnet where REF was defined
	to ref_indep_loop_p.
	(ref_indep_loop_p_1): Fix commentary, add argument REF_LOOP,
	combine it with ref_indep_lopp_p_2, update SAFELEN if only REF
	is inside LOOP, do not cache dpendence value for loops with
	non-zero SAFELEN.
	(ref_indep_loop_p_2): Delete function.
	(can_sm_ref_p): Pass LOOP as additional argument to
	ref_indep_loop_p.

From-SVN: r239326

re PR target/72853 (gcc/testsuite/gcc.c-torture/execute/20021120-1.c generates incorrect stxssp op with -mcpu=power9)

[gcc]
2016-08-10  Michael Meissner  <meissner@linux.vnet.ibm.com>

	PR target/72853
	* config/rs6000/rs6000.c (mem_operand_ds_form): Add check for op
	being an offsettable address.

[gcc/testsuite]
2016-08-10  Michael Meissner  <meissner@linux.vnet.ibm.com>

	PR target/72853
	* gcc.target/powerpc/pr72853.c: New test.

From-SVN: r239325

	PR gcov-profile/58306
	* Makefile.in: New functions (modules) are added.
	* libgcov-profiler.c (__gcov_interval_profiler_atomic): New
	function.
	(__gcov_pow2_profiler_atomic): New function.
	(__gcov_one_value_profiler_body): New argument is instroduced.
	(__gcov_one_value_profiler): Call with the new argument.
	(__gcov_one_value_profiler_atomic): Likewise.
	(__gcov_indirect_call_profiler_v2): Likewise.
	(__gcov_time_profiler_atomic): New function.
	(__gcov_average_profiler_atomic): Likewise.
	(__gcov_ior_profiler_atomic): Likewise.
	* libgcov.h: Declare the aforementioned functions.
	PR gcov-profile/58306
	* gcc.dg/tree-prof/val-profiler-threads-1.c: New test.
	PR gcov-profile/58306
	* tree-profile.c (gimple_init_edge_profiler): Create conditionally
	atomic variants of profile update functions.

From-SVN: r239324

	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