2017-06-01  Richard Biener  <rguenther@suse.de>

	PR middle-end/66313
	* fold-const.c (fold_plusminus_mult_expr): If the factored
	factor may be zero use a wrapping type for the inner operation.
	* tree-tailcall.c (independent_of_stmt_p): Pass in to_move bitmap
	and handle moved defs.
	(process_assignment): Properly guard the unary op case.  Return a
	tri-state indicating that moving the stmt before the call may allow
	to continue.  Pass through to_move.
	(find_tail_calls): Handle moving unrelated defs before
	the call.

	* c-c++-common/ubsan/pr66313.c: New testcase.
	* gcc.dg/tree-ssa/loop-15.c: Adjust.

From-SVN: r248771

From-SVN: r248770

when compiling --with-cpu=power6.

2017-05-31  Steven Munroe  <munroesj@gcc.gnu.org>

	* gcc.target/powerpc/bmi2-pdep32-1.c: Add -mcpu=power7 to
        dg-options.  Change dg-require-effective-target powerpc_vsx_ok
        to vsx_hw.  Add dg-skip-if directive to disable this test if
	-mcpu overridden.
	* gcc.target/powerpc/bmi2-pdep64-1.c: Likewise.
	* gcc.target/powerpc/bmi2-pext32-1.c: Likewise.
	* gcc.target/powerpc/bmi2-pext64-1.c: Likewise.
	* gcc.target/powerpc/bmi2-pext64-1a.c: Add -mcpu=power7
	to dg-option.  Add dg-skip-if directive to disable this test
	for darwin.  Add dg-skip-if directive to disable this test if
	-mcpu overridden.

From-SVN: r248766

    
    Fix lfstack code to work with sparc64 GNU/Linux address map.
    
    Force alignment of epollevent.  To make this work reliably, pass
    GOARCH explicitly to mkrsysinfo.sh.
    
    Patch by Vladimir Mezentsev.
    
    Reviewed-on: https://go-review.googlesource.com/44494

From-SVN: r248765

	PR target/80618
	* config/rs6000/vector.md (*vector_uneq<mode>): Write the nor in the
	splitter result in the canonical way.

From-SVN: r248764

The canonical RTL for "nor" is (and (not ()) (not ())), and that is
indeed what we use in boolccv2df3_internal1.  So, the splitter for
*vector_uneq<mode> should use that form, not (not (ior () ())), which
does not match any pattern.


	PR target/80618
	* config/rs6000/rs6000.md (*vector_uneq<mode>): Write the nor in the
	splitter result in the canonical way.

From-SVN: r248763

	* config/i386/i386.md (*zero_extendsidi2): Enable alternative (?r, *Yj)
	also for 32bit target.  Update insn attributes.
	(zero-extendsidi2 splitter): Allow all registers for operand 1.

From-SVN: r248757

        (_mm_maskz_max_sd, _mm_mask_max_ss, _mm_maskz_max_ss)
        (_mm_mask_min_sd, _mm_maskz_min_sd, _mm_mask_min_ss)
        (_mm_maskz_min_ss): New intrinsics.

testsuite/ChangeLog:

	* gcc.target/i386/avx512f-vmaxsd-1.c (_mm_mask_max_sd)
	(_mm_maskz_max_sd): Test new intrinsics.
	* gcc.target/i386/avx512f-vmaxsd-2.c (_mm_mask_max_sd)
	(_mm_maskz_max_sd): Test new intrinsics.
	* gcc.target/i386/avx512f-vmaxss-1.c (_mm_mask_max_ss)
	(_mm_maskz_max_ss): Test new intrinsics.
	* gcc.target/i386/avx512f-vmaxss-2.c (_mm_mask_max_ss)
	(_mm_maskz_max_ss): Test new intrinsics.
	* gcc.target/i386/avx512f-vminsd-1.c (_mm_mask_min_sd)
	(_mm_maskz_min_sd): Test new intrinsics.
	* gcc.target/i386/avx512f-vminsd-2.c (_mm_mask_min_sd)
	(_mm_maskz_min_sd): Test new intrinsics.
	* gcc.target/i386/avx512f-vminss-1.c (_mm_mask_min_ss)
	(_mm_maskz_min_ss): Test new intrinsics.
	* gcc.target/i386/avx512f-vminss-2.c (_mm_mask_min_ss)
	(_mm_maskz_min_ss): Test new intrinsics.

From-SVN: r248756

	* pt.c (convert_nontype_argument): Don't test whether a decl is
	value-dependent when binding to a reference.

From-SVN: r248749

	* cp-tree.h (lang_decl_slector): New enum.
	(lang_decl_base): Make selector an enum.  Drop decomposition_p
	field.
	(lang_decl): Use enum for discrimination.
	(LANG_DECL_FN_CHECK, LANG_DECL_NS_CHECK, LANG_DECL_PARM_CHECK,
	LANG_DECL_DEOMP_CHECK): Use enum.
	(DECL_DECOMPOSITION_P): Use selector value.
	(SET_DECL_DECOMPOSITION_P): Delete.
	(retrofit_lang_decl): Lose SEL parm.
	(fit_decomposition_lang_decl): Declare.
	* decl.c (cp_finish_decomp, grokdeclarator): Use
	fit_decomposition_lang_decl.
	* lex.c (maybe_add_lang_decl_raw): New. Broken out of
	retrofit_lang_decl.
	(set_decl_linkage): New.  Broken out of retrofit_lang_decl.  Use
	enum.
	(fit_decomposition_lang_decl): Likewise.
	(retrofit_lang_decl): Use worker functions.
	(cxx_dup_lang_specific_decl): Use selector enum.
	(maybe_add_lang_type_raw): New.  Broken out of ...
	(cxx_make_type_name): ... here.  Call it.

From-SVN: r248748

From-SVN: r248747

	gcc/testsuite
	* gcc.dg/tree-ssa/ivopt_mult_4.c: Explicitly check comparison
	on pointer should not be replaced.

From-SVN: r248746

2017-05-31  Martin Liska  <mliska@suse.cz>

	* filter_params.py:
	Transform ENUM_BITFIELD and comments starting with '/**'

From-SVN: r248741

2017-05-31  Martin Liska  <mliska@suse.cz>

	* tree-vect-loop.c (vect_create_epilog_for_reduction):
	Change comment style to one we normally use.
	(vectorizable_reduction): Likewise.
	(vectorizable_induction): Likewise.
	* tree-vect-stmts.c (vectorizable_mask_load_store): Likewise.
	(vectorizable_call): Likewise.
	(vectorizable_simd_clone_call): Likewise.
	(vectorizable_conversion): Likewise.
	(vectorizable_assignment): Likewise.
	(vectorizable_shift): Likewise.
	(vectorizable_operation): Likewise.
	(vectorizable_store): Likewise.
	(vectorizable_load): Likewise.
	* tree-vectorizer.h: Likewise.

From-SVN: r248740

2017-05-31  David Malcolm  <dmalcolm@redhat.com>
	    Martin Liska  <mliska@suse.cz>

	* filter_params.py: New, porting the perl script to python,
	adding a test suite.
	* filter_gcc_for_doxygen_new: New file.

Co-Authored-By: Martin Liska <mliska@suse.cz>

From-SVN: r248739

gcc/c/

	PR testsuite/80580
	* gimple-parser.c (c_parser_gimple_if_stmt): Check for empty labels.

gcc/testsuite/

	PR testsuite/80580
	* gcc.dg/gimplefe-error-7.c: New test.

From-SVN: r248738

2017-05-31  Martin Liska  <mliska@suse.cz>

	* configure.ac: Add handling of stage2_werror_flags to
	action-if-given and to action-if-not-given.
	* configure: Regenerate.

From-SVN: r248737

	* passes.c (emergency_dump_function): New.
	* tree-pass.h (emergency_dump_function): Declare.
	* plugin.c (plugins_internal_error_function): Remove.
	* plugin.h (plugins_internal_error_function): Remove declaration.
	* toplev.c (internal_error_function): New static function.  Use it...
	(general_init): ...here.

From-SVN: r248736

Since the combine pass canonicalises shift-add insns using plus and
ashift (as opposed to plus and mult which it previously used to do), it
no longer creates *add_n or *sub_n insns, as the patterns match plus and
mult only. The outcome of this is that some opportunities to generate
add{1,2,3} and sub{1,2,3} instructions are missed.

This change adds additional *add_n and *sub_n insns that match the
plus-ashift pattern. The original *add_n and *sub_n insns are still left
in, as they are sometimes generated later on by constant propagation.
The idea of adding these insns is modelled on the changes in:

  https://gcc.gnu.org/ml/gcc-patches/2015-05/msg01882.html

which addresses a similar issue for the PA target.

For the small test cases that are added, even if the combine pass misses
the opportunity to generate addN or subN, constant propagation manages
to do so, so the rtl of the combine pass is checked.

gcc/ChangeLog:

        * config/arc/arc.c (arc_print_operand): Handle constant operands.
        (arc_rtx_costs): Add costs for new patterns.
        * config/arc/arc.md: Additional *add_n and *sub_n patterns.
        * config/arc/predicates.md: Add _1_2_3_operand predicate.

gcc/testsuite/ChangeLog:

        * gcc.target/arc/add_n-combine.c: New test.
        * gcc.target/arc/sub_n-combine.c: New test.

From-SVN: r248735

	PR libstdc++/80893
	* include/bits/stl_bvector.h (vector<bool>::_M_initialize): Avoid
	null pointer dereference when size is zero.
	* testsuite/23_containers/vector/bool/80893.cc: New.
	* testsuite/util/testsuite_allocator.h (PointerBase::PointerBase):
	Add non-explicit constructor from nullptr.
	(PointerBase::derived() const): Add const-qualified overload.

From-SVN: r248734

This patch just adds a helper function for getting the next strinfo
in a chain, since part 2 adds another place where we do that.

2017-05-16  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* tree-ssa-strlen.c (get_next_strinfo): New function.
	(get_stridx_plus_constant): Use it.
	(zero_length_string): Likewise.
	(adjust_related_strinfos): Likewise.
	(adjust_last_stmt): Likewise.

From-SVN: r248732

2017-05-31  Richard Biener  <rguenther@suse.de>

	PR target/80880
	* config/i386/i386.c (ix86_expand_builtin): Remove assert
	for arg being an SSA name when expanding IX86_BUILTIN_BNDRET.

	* gcc.target/i386/pr80880.c: New testcase.

From-SVN: r248731

vect_find_same_alignment_drs uses the ddr dependence distance
to tell whether two references have the same alignment.  Although
that's safe with the current code, there's no particular reason
why a dependence distance of 0 should mean that the accesses start
on the same byte.  E.g. a reference to a full complex value could
in principle depend on a reference to the imaginary component.
A later patch adds support for this kind of dependence.

On the other side, checking modulo vf is pessimistic when the step
divided by the element size is a factor of 2.

This patch instead looks for cases in which the drs have the same
base, offset and step, and for which the difference in their constant
initial values is a multiple of the alignment.

2017-05-03  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* tree-vect-data-refs.c (vect_find_same_alignment_drs): Remove
	loop_vinfo argument and use of dependence distance vectors.
	Check instead whether the two references differ only in their
	initial value and assume that they have the same alignment if the
	difference is a multiple of the vector alignment.
	(vect_analyze_data_refs_alignment): Update call accordingly.

gcc/testsuite/
	* gcc.dg/vect/vect-103.c: Update wording of dump message.

From-SVN: r248730

2017-05-31  Martin Liska  <mliska@suse.cz>

	PR target/79155
	* config/i386/cpuid.h: Fix typo in a comment in cpuid.h.

From-SVN: r248729

	(create_intersect_range_checks): Move from ...
	* tree-data-ref.c (create_intersect_range_checks_index)
	(create_intersect_range_checks): ... to here.
	(create_runtime_alias_checks): New function factored from ...
	* tree-vect-loop-manip.c (vect_create_cond_for_alias_checks): ...
	here.  Call above function.
	* tree-data-ref.h (create_runtime_alias_checks): New function.

From-SVN: r248726

tree-data-ref.c (prune_runtime_alias_test_list): Relax minimal segment length for dr_b and compute it in wide_int.

	* tree-data-ref.c (prune_runtime_alias_test_list): Relax minimal
	segment length for dr_b and compute it in wide_int.

	gcc/testsuite
	* gcc.dg/vect/pr80815-3.c: New test.

From-SVN: r248725

2017-05-31  Prakhar Bahuguna  <prakhar.bahuguna@arm.com>

	* MAINTAINERS: Add self to Write After Approval

From-SVN: r248723

re PR tree-optimization/80906 (ICE in copy_loop_close_phi_args, at graphite-isl-ast-to-gimple.c:2094)

2017-05-31  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/80906
	* graphite-isl-ast-to-gimple.c (copy_loop_close_phi_nodes): Get
	and pass through iv_map.
	(copy_bb_and_scalar_dependences): Adjust.
	(translate_pending_phi_nodes): Likewise.
	(copy_loop_close_phi_args): Handle code-generating IVs instead
	of ICEing.

	* gcc.dg/graphite/pr80906.c: New testcase.

From-SVN: r248722

* configure.ac (strnlen): Add to AC_CHECK_DECLS.
* configure: Likewise.
* config.in: Add HACE_DECL_STRNLEN.

From-SVN: r248721

From-SVN: r248719

2017-05-30  Tom de Vries  <tom@codesourcery.com>

	PR testsuite/80910
	* gcc.target/x86_64/abi/ms-sysv/ms-sysv.exp: Exit with status
	unsupported if host compiler does not support c++11.
	(host_supports_c++11): New proc.

From-SVN: r248701

gcc/testsuite/ChangeLog:
	PR c/80731
	* g++.dg/ext/utf16-4.C: Relax test.
	* gcc.dg/fixed-point/int-warning.c: Adjust.

From-SVN: r248700

	* semantics.c (finish_call_expr): Replace a local extern overload
	set in a template with the IDENTIFIER_NODE.

From-SVN: r248699

gcc/ChangeLog:
	* diagnostic-color.c (color_dict): Add "type-diff".
	(parse_gcc_colors): Update comment.
	* doc/invoke.texi (Diagnostic Message Formatting Options): Add
	-fdiagnostics-show-template-tree and -fno-elide-type.
	(GCC_COLORS): Add type-diff to example.
	(type-diff=): New.
	(-fdiagnostics-show-template-tree): New.
	(-fno-elide-type): New.
	* pretty-print.c (pp_format): Pass quote and formatters[argno] to
	the pp_format_decoder callback.  Call any m_format_postprocessor's
	"handle" method.
	(pretty_printer::pretty_printer): Initialize
	m_format_postprocessor.
	(pretty_printer::~pretty_printer): Delete any
	m_format_postprocessor.
	* pretty-print.h (printer_fn): Add bool and const char **
	parameters.
	(class format_postprocessor): New class.
	(struct pretty_printer::format_decoder): Document the new
	parameters.
	(struct pretty_printer::m_format_postprocessor): New field.
	* tree-diagnostic.c (default_tree_printer): Update for new
	bool and const char ** params.
	* tree-diagnostic.h (default_tree_printer): Likewise.

gcc/c/ChangeLog:
	* c-objc-common.c (c_tree_printer): Gain bool and const char **
	parameters.

gcc/c-family/ChangeLog:
	* c-format.c (gcc_cxxdiag_char_table): Add 'H' and 'I' to
	format_chars.
	* c.opt (fdiagnostics-show-template-tree): New option.
	(felide-type): New option.

gcc/cp/ChangeLog:
	* call.c (perform_implicit_conversion_flags): Convert
	"from %qT to %qT" to "from %qH to %qI" in diagnostic.
	(print_conversion_rejection): Replace pairs of %qT with
	%qH and %qI in various places.
	(build_user_type_conversion_1): Likewise.
	(build_integral_nontype_arg_conv): Likewise.
	(build_conditional_expr_1): Likewise.
	(convert_like_real): Likewise.
	(convert_arg_to_ellipsis): Likewise.
	(joust): Likewise.
	(initialize_reference): Likewise.
	* cvt.c (cp_convert_to_pointer): Likewise.
	(cp_convert_to_pointer): Likewise.
	(convert_to_reference): Likewise.
	(ocp_convert): Likewise.
	* error.c (cp_printer): Gain bool and const char ** parameters.
	(struct deferred_printed_type): New struct.
	(class cxx_format_postprocessor): New class.
	(cxx_initialize_diagnostics): Wire up a cxx_format_postprocessor
	to pp->m_format_postprocessor.
	(comparable_template_types_p): New function.
	(newline_and_indent): New function.
	(arg_to_string): New function.
	(print_nonequal_arg): New function.
	(print_template_differences): New function.
	(type_to_string_with_compare): New function.
	(print_template_tree_comparison): New function.
	(append_formatted_chunk): New function.
	(add_quotes): New function.
	(cxx_format_postprocessor::handle): New function.
	(defer_phase_2_of_type_diff): New function.
	(cp_printer): Add "quoted" and "buffer_ptr" params.  Implement
	%H and %I.
	* typeck.c (cp_build_binary_op): Replace pairs of %qT with
	%qH and %qI in various places.
	(convert_member_func_to_ptr): Likewise.
	(build_reinterpret_cast_1): Likewise.
	(convert_for_assignment): Likewise.
	* typeck2.c (check_narrowing): Likewise.

gcc/fortran/ChangeLog:
	* error.c (gfc_format_decoder): Update for new bool and
	const char ** params.

gcc/testsuite/ChangeLog:
	* g++.dg/plugin/plugin.exp (plugin_test_list): Add...
	* g++.dg/plugin/show-template-tree-color-no-elide-type.C: New
	test case.
	* g++.dg/plugin/show-template-tree-color.C: New test case.
	* g++.dg/plugin/show_template_tree_color_plugin.c: New plugin.
	* g++.dg/template/show-template-tree-2.C: New test case.
	* g++.dg/template/show-template-tree-3.C: New test case.
	* g++.dg/template/show-template-tree-4.C: New test case.
	* g++.dg/template/show-template-tree-no-elide-type.C: New test case.
	* g++.dg/template/show-template-tree.C: New test case.

From-SVN: r248698

-mno-gen-cell-microcode is a pain to handle correctly: it causes
different code generation for some very basic patterns, even patterns
specific to that option.  It also requires marking up many patterns,
which is a pain when adding new patterns or modifying existing ones
(first non-trivial step is finding the Cell BE manual!)

-mwarn-cell-microcode is very expensive, even more so after my recent
fix for PR43763; and it used to ICE for seven years before that fix.

This patch removes both these command line options (it leaves the
positive form of -mgen-cell-microcode, doing nothing, for
compatibility).

Where cc_reg_not_micro_cr0_operand was used, we now get the regular
cc_reg_not_cr0_operand.

One testcase used -mgen-cell-microcode and one its negation; both
are adjusted.


	* config/rs6000/predicates.md (cc_reg_not_micro_cr0_operand): Delete.
	(lwa_operand): Delete rs6000_gen_cell_microcode test.
	* config/rs6000/rs6000.c (rs6000_option_override_internal): Delete
	rs6000_gen_cell_microcode code.
	(rs6000_final_prescan_insn): Delete.
	(rs6000_opt_vars): Delete the "gen-cell-microcode" and
	"warn-cell-microcode" entries.
	* config/rs6000/rs6000.h (FINAL_PRESCAN_INSN): Delete.
	* config/rs6000/rs6000.md: Delete rs6000_gen_cell_microcode tests
	throughout.  Change cc_reg_not_micro_cr0_operand to
	cc_reg_not_cr0_operand throughout.
	(*extendhi<mode>2_noload): Delete.
	* config/rs6000/rs6000.opt (mgen-cell-microcode): Replace by stub.
	(mwarn-cell-microcode): Delete.
	* doc/invoke.texi (RS/6000 and PowerPC Options): Delete
	-mgen-cell-microcode and -mwarn-cell-microcode.

gcc/testsuite/
	* gcc.target/powerpc/shift-dot.c: Delete -mgen-cell-microcode from
	dg-options.
	* gfortran.dg/pr80107.f: Delete testcase.

From-SVN: r248695

	Kill IDENTIFIER_NAMESPACE_BINDINGS
	* cp-tree.h (lang_identifier): Delete namespace_bindings.
	(IDENTIFIER_NAMESPACE_BINDINGS): Delete.
	(lang_decl_ns): Add bindings.
	(DECL_NAMESPACE_BINDINGS): New.
	* lex.c (retrofit_lang_decl): Create namespace hash table.
	* name-lookup.c (find_namespace_slot): Change to use hash-map.
	* ptree.c (cxx_print_binding): Delete.
	(cxx_print_identifier): Remove NAMESPACE_BINDING printing.

From-SVN: r248694

	* cp-tree.def (OVERLOAD): Fix comment.
	* cp-tree.h: Fix comments and whitespace.
	* error.c (dump_decl): Use pp_cxx_colon_colon, ovl_scope.
	* name-lookup.c (add_decl_to_level): Assert not class.
	(check_local_shadow): Use OVL_P.
	(pushdecl_with_scope_1): Rename to ...
	(do_pushdecl_with_Scope): ... here.
	(do_nonmember_using_decl): Use qualified_namespace_lookup return
	value.
	(push_class_level_binding_1): Use OVL_P.
	(pushdecl_namespace_level): Use do_pushdecl_with_scope.
	(pushtag_1): Rename to ...
	(do_pushtag): ... here.  Adjust do_pushdecl_with_scope call.
	(pushtag): Adjust.
	(store_class_bindings): Do not time here.
	* name-lookup.h (pushdecl_outermost_localscope): Reorder.
	* pt.c (listify): Declare argvec at point of initialization.

From-SVN: r248693

	* ChangeLog: Add missing entry.
	* testsuite/ChangeLog: Ditto.

From-SVN: r248692

	PR target/80833
	* config/i386/constraints.md (Yd): New constraint.
	(Ye): Ditto.
	* config/i386/i386.md (*movti_internal): Add (?r, Ye)
	and (?Yd, r) alternatives.  Update insn attributes.
	* config/i386/i386.md (*movti_internal): Add (?r, *Ye)
	and (?*Yd, r) alternatives.  Update insn attributes.
	(double-mode inter-unit splitters): Add new GR<->XMM splitters.

testsuite/ChangeLog:

	PR target/80833
	* gcc.target/i386/pr80833-1.c: New test.
	* gcc.target/i386/pr80833-2.c: Ditto.

From-SVN: r248691

An upcoming patch exposes a bug in gimplify_modify_expr.  There, we try
not to create DECL_DEBUG_EXPR links across functions, however we don't
check that *FROM_P actually belongs to the current function before
modifying it.  This patch fixes this oversight.

gcc/

	* gimplify.c (gimplify_modify_expr): Don't create a
	DECL_DEBUG_EXPR link if *FROM_P does not belong to the current
	function.

From-SVN: r248688