From-SVN: r245887

re PR c/79758 (ICE: tree check: expected class 'type', have 'exceptional' (error_mark) in store_parm_decls_oldstyle, at c/c-decl.c:8973)

	PR c/79758
	* c-decl.c (store_parm_decls_oldstyle): Check if the element of
	current_function_prototype_arg_types is error_mark_node.  Fix
	formatting.  Use TREE_VALUE instead of TREE_TYPE.

	* gcc.dg/noncompile/pr79758.c: New test.

From-SVN: r245886

re PR c/79837 (incomplete diagnostic in c-parser: expected +, *, -, &, ^, |, &&, ||, min or identifier)

	PR c/79837
	* c-parser.c (c_parser_omp_clause_reduction): Don't mention
	%<min%> or %<max%> in the diagnostics, instead mention identifier.
	(c_parser_omp_declare_reduction): Don't mention %<min%> in the
	diagnostics.

From-SVN: r245885

	PR c/79836
	* c-parser.c (c_parser_generic_selection): Use %<_Generic%>
	instead of %<_Generic>.
	(c_parser_omp_ordered): Use %<depend%> instead of %<depend>.
	(c_parser_omp_target_exit_data): Use %<release%> instead of
	%<release>.

From-SVN: r245883

	PR middle-end/79805
	* internal-fn.def (ATOMIC_BIT_TEST_AND_SET, ATOMIC_BIT_TEST_AND_RESET,
	ATOMIC_BIT_TEST_AND_COMPLEMENT, ATOMIC_COMPARE_EXCHANGE): Remove
	ECF_NOTHROW.
	* gimple-fold.c (fold_builtin_atomic_compare_exchange): Set
	gimple_call_nothrow_p flag based on whether original builtin can throw.
	If it can, emit following stmts on the fallthrough edge.
	* tree-ssa-ccp.c (optimize_atomic_bit_test_and): Similarly, except
	don't create new bb if inserting just debug stmts on the edge, try to
	insert them on the fallthru bb or just reset debug stmts.

	* g++.dg/opt/pr79805.C: New test.

From-SVN: r245882

If using -mwarn-cell-microcode, rs6000_final_prescan_insn calls
get_insn_template to get the name of the machine instruction.  But,
get_insn_template calls the output template if that is code, and that
then can modify recog_data (it is normal to change the operands, for
example).

This patch saves and restores recog_data around the call to
get_insn_template to fix the problems this causes.


	PR target/43763
	* config/rs6000/rs6000.c (rs6000_final_prescan_insn): Save and
	restore recog_data (including the operand rtxes inside it) around
	the call to get_insn_template.

From-SVN: r245880

	* gcc.target/i386/avx512vpopcntdq-check.h: New.
	* gcc.target/i386/avx512vpopcntdq-vpopcntd-1.c: Ditto.
	* gcc.target/i386/avx512vpopcntdq-vpopcntq-1.c: Ditto.
	* gcc.target/i386/avx512f-helper.h: Add avx512vpopcntdq-check.h.
	* gcc.target/i386/i386.exp
	(check_effective_target_avx512vpopcntdq): New.

From-SVN: r245879

gcc/ChangeLog:
	* context.c (context::~context): Free MPFR caches to avoid
	a memory leak on program exit.

From-SVN: r245878

    * config/aarch64/aarch64.c (aarch64_float_const_representable_p):
    Use wide_int::ulow () instead of .elt (0).

From-SVN: r245877

	* config/i386/i386.md (*pushtf): Change *roF constraint to *roC.
	(*pushxf): Limit oF constraint to 32bit targets and add oC
	constraint for 64bit targets.
	(pushxf splitter): Use PUSH_ROUNDING to calculate stack adjustment.
	(*pushdf): Change rmF constraint to rmC.

From-SVN: r245876

From-SVN: r245875

gcc/testsuite/

	* gcc.target/mips/pr68273.c (dg-final): Match SImode registers only for
	ilp32 targets and match DImode registers for lp64 targets.

From-SVN: r245874

2017-03-03  Martin Liska  <mliska@suse.cz>

	* tree-ssa-loop-prefetch.c (pass_loop_prefetch::execute):
	Remove unused variable.

From-SVN: r245873

	* g++.dg/pr71624.C: Disable for x32.
	* g++.dg/pr71633.C: Ditto.

From-SVN: r245872

	PR target/79807
	* config/i386/i386.c (ix86_expand_multi_arg_builtin): If target
	is a memory operand, increase num_memory.
	(ix86_expand_args_builtin): Likewise.

	* gcc.target/i386/pr79807.c: New test.

From-SVN: r245871

2017-03-03  Jan Hubicka  <jh@suse.cz>

	PR lto/79760
	* ipa-devirt.c (maybe_record_node): Properly handle
	__cxa_pure_virtual visibility.

From-SVN: r245870

2017-03-03  Martin Liska  <mliska@suse.cz>

	PR tree-optimization/79803
	* tree-ssa-loop-prefetch.c (tree_ssa_prefetch_arrays): Remove
	assert.
	(pass_loop_prefetch::execute): Disabled optimization if an
	assumption about L1 cache size is not met.
2017-03-03  Martin Liska  <mliska@suse.cz>

	PR tree-optimization/79803
	* gcc.dg/tree-ssa/pr79803.c: New test.

From-SVN: r245869

2017-03-03  Martin Liska  <mliska@suse.cz>

	PR rtl-optimization/79574
	* gcse.c (struct gcse_expr): Use HOST_WIDE_INT instead of int.
	(hash_scan_set): Likewise.
	(dump_hash_table): Likewise.
	(hoist_code): Likewise.
2017-03-03  Martin Liska  <mliska@suse.cz>

	PR rtl-optimization/79574
	* gcc.dg/pr79574-2.c: New test.

From-SVN: r245868

2017-03-03  Richard Biener  <rguenther@suse.de>

	* fixed-value.c (fixed_from_string): Restore use of elt (1)
	in place of uhigh ().
	(fixed_convert_from_real): Likewise.

From-SVN: r245867

re PR c++/79825 (Uninitialized uses in aggregate copies of empty structs (missed DCE in C++ gimplify))

2017-03-03  Richard Biener  <rguenther@suse.de>

	PR c++/79825
	* cp-gimplify.c (simple_empty_class_p): Handle EMPTY_CLASS_EXPR.

	* g++.dg/warn/Wuninitialized-8.C: New testcase.

From-SVN: r245866

From-SVN: r245865

	PR c++/79791
	* typeck.c (string_conv_p): In C++11, always call pedwarn with
	OPT_Wwrite_strings.

	* g++.dg/warn/Wwrite-strings-1.C: New test.
	* g++.dg/warn/Wwrite-strings-2.C: New test.
	* g++.dg/warn/Wwrite-strings-3.C: New test.
	* g++.dg/warn/Wwrite-strings-4.C: New test.
	* g++.dg/warn/Wwrite-strings-5.C: New test.
	* g++.dg/warn/Wwrite-strings-6.C: New test.
	* g++.dg/warn/Wwrite-strings-7.C: New test.
	* g++.dg/warn/Wwrite-strings-8.C: New test.
	* g++.dg/warn/Wwrite-strings-9.C: New test.
	* g++.dg/warn/Wwrite-strings-10.C: New test.
	* g++.dg/warn/Wwrite-strings-11.C: New test.
	* g++.dg/warn/Wwrite-strings-12.C: New test.

From-SVN: r245864

	PR target/79514
	* config/i386/i386.md (*pushxf_rounded): Use Pmode instead of DImode.

From-SVN: r245861

2017-03-03  Richard Biener  <rguenther@suse.de>

	PR middle-end/79818
	* match.pd ( X +- C1 CMP C2 -> X CMP C2 -+ C1): Add missing
	TYPE_OVERFLOW_UNDEFINED check.

	* gcc.dg/torture/pr79818.c: New testcase.

From-SVN: r245860

	* pt.c (do_class_deduction): Always build the copy guide.
	(copy_guide_p, template_guide_p): New.
	(build_deduction_guide): Remember the original constructor.
	* call.c (joust): Prefer the copy guide and non-template guides.

From-SVN: r245859

	* cp-tree.h (struct saved_scope): Add deduction_guide_type.
	(struct cp_decl_specifier_seq): Add constructor_p.
	* parser.c (cp_parser_decl_specifier_seq): Set constructor_p.
	(cp_parser_init_declarator): Check it.  Set ctor_dtor_or_conv_p.
	Clear deduction_guide_type.  Don't handle deduction guide names.
	(cp_parser_declarator): Don't clear ctor_dtor_or_conv_p.
	(cp_parser_direct_declarator): Likewise.  Handle deduction guides.
	(cp_parser_member_declaration, cp_parser_cache_defarg)
	(cp_parser_objc_class_ivars): Set ctor_dtor_or_conv_p.
	* pt.c (tsubst_copy, tsubst_copy_and_build): Revert last change.
	(build_deduction_guide): Set deduction_guide_type.
	(dependent_scope_p): Check deduction_guide_type.
	* search.c (lookup_member): Likewise.

From-SVN: r245858

From-SVN: r245857

re PR c++/79782 (ICE: tree check: expected tree_list, have void_type in emit_mem_initializers, at cp/init.c:1225)

	PR c++/79782
	* init.c (mark_exp_read_r): New function.
	(emit_mem_initializers): Use cp_walk_tree with mark_exp_read_r on
	whole arguments instead of plain mark_exp_read on TREE_LIST values.

	* g++.dg/warn/Wunused-parm-10.C: New test.

From-SVN: r245853

From-SVN: r245852

	* gcc.dg/rtl/x86_64/*.c: Test for
	"{ i?86-*-* x86_64-*-* } && lp64" targets only.

From-SVN: r245850

2017-03-02  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* config/rs6000/vector.md (vector_ne_<mode>_p): Correct operand
	numbers.
	(vector_ae_<mode>_p): Likewise.
	(vector_nez_<mode>_p): Likewise.
	(vector_ne_v2di_p): Likewise.
	(vector_ae_v2di_p): Likewise.
	(vector_ne_<mode>_p): Likewise.
	* config/rs6000/vsx.md (vsx_tsqrt<mode>2_fg): Correct operand
	numbers.
	(vsx_tsqrt<mode>2_fe): Likewise.

From-SVN: r245849

	* doc/xml/manual/debug_mode.xml: Update and simplify note
	on link- and run-time coexistence.

Co-Authored-By: François Dumont <frs.dumont@gmail.com>
Co-Authored-By: Jonathan Wakely <jwakely@redhat.com>

From-SVN: r245848

	* testsuite/17_intro/headers/names.cc: Rename to ...
	* testsuite/17_intro/names.cc: ... here.

From-SVN: r245845

	PR target/79514
	* config/i386/i386.md (*pushxf_rounded): New insn_and_split pattern.

testsuite/ChangeLog:

	PR target/79514
	* gcc.target/i386/pr79514.c: New test.

From-SVN: r245844

re PR rtl-optimization/79780 (ICE in rtl_verify_bb_insns, at cfgrtl.c:2661 (error: flow control insn inside a basic block))

	PR rtl-optimization/79780
	* cprop.c (one_cprop_pass): When second and further conditional trap
	in a single basic block is turned into an unconditional trap, turn it
	into a deleted note to avoid RTL verification failures.

	* gcc.c-torture/compile/pr79780.c: New test.

From-SVN: r245843

2017-03-02  Richard Biener  <rguenther@suse.de>

	* fold-const.c (const_binop): Use ulow () instead of elt (0).

From-SVN: r245841

re PR tree-optimization/79345 (passing yet-uninitialized member as argument to base class constructor should warn (-Wunitialized))

2017-03-02  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/79345
	PR c++/42000
	* tree-ssa-alias.c (walk_aliased_vdefs_1): Take a limit
	param and abort the walk, returning -1 if it is hit.
	(walk_aliased_vdefs): Take a limit param and pass it on.
	* tree-ssa-alias.h (walk_aliased_vdefs): Add a limit param,
	defaulting to 0 and return a signed int.
	* tree-ssa-uninit.c (struct check_defs_data): New struct.
	(check_defs): New helper.
	(warn_uninitialized_vars): Use walk_aliased_vdefs to warn
	about uninitialized memory.

	* fixed-value.c (fixed_from_string): Use ulow/uhigh to avoid
	bogus uninitialized warning.
	(fixed_convert_from_real): Likewise.

	* g++.dg/warn/Wuninitialized-7.C: New testcase.
	* c-c++-common/ubsan/bounds-2.c: Add -Wno-uninitialized.
	* gcc.dg/uninit-pr19430-2.c: Add expected warning.

From-SVN: r245840

2017-03-02  Thomas Koenig  <tkoenig@gcc.gnu.org>
	    Jakub Jelinek  <jakub@redhat.com>

	* m4/matmul.m4 (matmul_'rtype_code`):  Avoid
	race condition on storing function pointer.
        * generated/matmul_c10.c: Regenerated.
        * generated/matmul_c16.c: Regenerated.
        * generated/matmul_c4.c: Regenerated.
        * generated/matmul_c8.c: Regenerated.
        * generated/matmul_i1.c: Regenerated.
        * generated/matmul_i16.c: Regenerated.
        * generated/matmul_i2.c: Regenerated.
        * generated/matmul_i4.c: Regenerated.
        * generated/matmul_i8.c: Regenerated.
        * generated/matmul_r10.c: Regenerated.
        * generated/matmul_r16.c: Regenerated.
        * generated/matmul_r4.c: Regenerated.
        * generated/matmul_r8.c: Regenerated.


Co-Authored-By: Jakub Jelinek <jakub@redhat.com>

From-SVN: r245839

2017-03-02  Richard Biener  <rguenther@suse.de>

	PR c/79756
	* c-common.c (c_common_mark_addressable_vec): Look through
	C_MAYBE_CONST_EXPR.

	* gcc.dg/vector-1.c: New testcase.

From-SVN: r245838

	PR tree-optimization/66768
	* tree-ssa-loop-ivopts.c (find_interesting_uses_address): Skip addr
	iv_use if base object can't be determined.

	gcc/testsuite
	* gcc.target/i386/pr66768.c: New test.

From-SVN: r245837