2017-10-11  Marc Glisse  <marc.glisse@inria.fr>

gcc/
	* fold-const.c (fold_binary_loc) [X +- Y CMP X]: Move ...
	* match.pd: ... here.
	((T) X == (T) Y): Relax condition.

gcc/testsuite/
	* gcc.dg/Wstrict-overflow-7.c: Xfail.
	* gcc.dg/pragma-diag-3.c: Likewise.

From-SVN: r253642

re PR tree-optimization/82472 (ICE in generate_code_for_partition, at tree-loop-distribution.c:1145)

	PR tree-optimization/82472
	* tree-loop-distribution.c (sort_partitions_by_post_order): Refine
	comment.
	(break_alias_scc_partitions): Update postorder number.

	gcc/testsuite
	* gcc.dg/tree-ssa/pr82472.c: New test.

From-SVN: r253641

2017-10-11  Martin Liska  <mliska@suse.cz>

	PR sanitizer/82490
	* opts.c (parse_no_sanitize_attribute): Do not use error_value
	variable.
	* opts.h (parse_no_sanitize_attribute): Remove last argument.
2017-10-11  Martin Liska  <mliska@suse.cz>

	PR sanitizer/82490
	* c-attribs.c (handle_no_sanitize_attribute): Report directly
	Wattributes warning.
2017-10-11  Martin Liska  <mliska@suse.cz>

	PR sanitizer/82490
	* c-c++-common/ubsan/attrib-5.c: New test.

From-SVN: r253640

2017-10-11  Martin Liska  <mliska@suse.cz>

	* print-rtl.c (print_insn): Move declaration of idbuf
	to same scope as name.

From-SVN: r253639

From-SVN: r253638

2017-10-11  Martin Liska  <mliska@suse.cz>

	PR sanitizer/82484
	* sanopt.c (sanitize_rewrite_addressable_params): Do not handle
	volatile arguments.
2017-10-11  Martin Liska  <mliska@suse.cz>

	PR sanitizer/82484
	* gcc.dg/asan/pr82484.c: New test.

From-SVN: r253637

2017-10-11  Martin Liska  <mliska@suse.cz>

	* c-c++-common/ubsan/ptr-overflow-sanitization-1.c: Scan
	optimized dump rather than assembly.

From-SVN: r253636

Similar to other architectures with IFUNC binutils/glibc support, this
patch enables the ifunc attribute for ARM GNU/Linux.  Although not
required for build master GLIBC, the intention is to allow refactor
its assembly implementation to C.

Tested compilation of glibc (in conjunction with a glibc patch to
support using the attribute on ARM) with build-many-glibcs.py (with
a patch to add a armv7 variant which enables multiarch).  I have
not run the GCC tests for ARM.

	* config.gcc (default_gnu_indirect_function): Default to yes for
	arm*-*-linux* with glibc.

From-SVN: r253635

From-SVN: r253634

2017-10-11  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/80412
	* g++.dg/cpp1z/class-deduction44.C: New.

From-SVN: r253632

re PR c++/82230 (ICE: in tsubst, at cp/pt.c:13686 when binding lambda to variable inside a generic lambda inside a template member function inside a template class)

2017-10-11  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/82230
	* g++.dg/cpp1y/lambda-generic-ice8.C: New.

From-SVN: r253631

2017-10-11  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/81299
	* g++.dg/cpp1y/lambda-generic-ice7.C: New.

From-SVN: r253630

tree-scalar-evolution.c (get_scalar_evolution): Handle default-defs and types we do not want to analyze.

2017-10-11  Richard Biener  <rguenther@suse.de>

	* tree-scalar-evolution.c (get_scalar_evolution): Handle
	default-defs and types we do not want to analyze.
	(interpret_loop_phi): Replace unreachable code with an assert.
	(compute_scalar_evolution_in_loop): Remove and inline ...
	(analyze_scalar_evolution_1): ... here, replacing condition with
	what makes the intent clearer.  Remove handling of cases
	get_scalar_evolution now handles.

From-SVN: r253629

	gcc/
	PR rtl-optimization/81434
	* haifa-sched.c (prune_ready_list): Init min_cost_group to 0.  Update
	comment for main loop.  In sched_group_found if, also add checks for
	pass and min_cost_group.

From-SVN: r253628

From-SVN: r253627

This adds an implementation of the insn_cost hook to rs6000.

This implementations is very minimal (so far).  It is mostly based on
how many machine instructions are generated by an RTL insn, and it also
looks at the instruction type.  Floating point insns are costed as if
all machine instructions it generates are floating point; the other
insns are treated as if all but one are integer insns (and one is the
specified type).  Load instructions are treated as costing twice as
much, and load locked and sync insns as three times as much (just like
the original costs), and integer div and mul are handled as well.

Each define_insn (etc.) can set a "cost" attribute to override this
general cost.  With optimization for size, the cost is set equal to the
value of the "length" attribute.

With this, the majority of cost differences between old and new are
where the old was wrong.  Also, benchmarks show a slight win (if
anything).  Some refinements are obviously needed.


	* config/rs6000/rs6000.c (TARGET_INSN_COST): New.
	(rs6000_insn_cost): New function.
	* config/rs6000/rs6000.md (cost): New attribute.

From-SVN: r253624

https://gcc.gnu.org/ml/gcc-patches/2017-10/msg00614.html
	* name-lookup.c (extern_c_fns): Rename to ...
	(extern_c_decls): ... here.
	(check_extern_c_conflict, extern_c_linkage_bindings): Update.
	(do_pushdecl): Check extern-c fns and vars.

	* g++.dg/lookup/extern-c-redecl6.C: New.
	* g++.dg/lookup/extern-c-hidden.C: Adjust diagnostics.
	* g++.dg/lookup/extern-c-redecl.C: Likewise.
	* g++.old-deja/g++.other/using9.C: Likewise.

From-SVN: r253622

2017-10-10  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/78006
	* g++.dg/cpp1y/auto-fn40.C: New.

From-SVN: r253621

https://gcc.gnu.org/ml/gcc-patches/2017-10/msg00621.html
	* cp-tree.h (default_hash_traits <lang_identifier *>): Delete
	specialization.

From-SVN: r253620

2017-10-10  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/81032
	* g++.dg/cpp1y/lambda-generic-ice6.C: New.

From-SVN: r253619

re PR rtl-optimization/68205 (ICE compiling gcc.c-torture/execute/20040709-2.c with -fno-common on arm-none-eabi)

	PR rtl-optimization/68205
	* gcc.c-torture/execute/20040709-3.c: New test.

From-SVN: r253618

2017-10-10  Jakub Jelinek  <jakub@redhat.com>

	PR c++/67625
	* g++.dg/cpp0x/pr67625.C: New test.

From-SVN: r253617

2017-10-10  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/70887
	* g++.dg/cpp0x/pr70887.C: New test.

From-SVN: r253616

re PR c++/70338 (ICE combining debug symbols, range-for in lambda in function template accessing captured variable-size array)

	PR c++/70338
	* g++.dg/cpp0x/pr70338.C: New test.

From-SVN: r253615

	PR c++/77786
	* g++.dg/cpp1y/pr77786.C: New test.

From-SVN: r253614

	PR c++/71875
	* g++.dg/cpp1y/pr71875.C: New test.

From-SVN: r253613

	PR c++/77578
	* g++.dg/gomp/pr77578.C: New test.

From-SVN: r253612

	PR middle-end/70100
	* g++.dg/opt/pr70100.C: New test.

From-SVN: r253611

2017-10-10  Jakub Jelinek  <jakub@redhat.com>

	PR c++/68252
	* g++.dg/other/pr68252.C: New test.

From-SVN: r253610

	PR target/79565
	PR target/82483
	* config/i386/i386.c (ix86_init_mmx_sse_builtins): Add
	OPTION_MASK_ISA_MMX for __builtin_ia32_maskmovq,
	__builtin_ia32_vec_ext_v4hi and __builtin_ia32_vec_set_v4hi.
	(ix86_expand_builtin): Treat OPTION_MASK_ISA_MMX similarly
	to OPTION_MASK_ISA_AVX512VL - builtins that have both
	OPTION_MASK_ISA_MMX and some other bit set require both
	mmx and the ISAs without the mmx bit.
	* config/i386/i386-builtin.def (__builtin_ia32_cvtps2pi,
	__builtin_ia32_cvttps2pi, __builtin_ia32_cvtpi2ps,
	__builtin_ia32_pavgb, __builtin_ia32_pavgw, __builtin_ia32_pmulhuw,
	__builtin_ia32_pmaxub, __builtin_ia32_pmaxsw, __builtin_ia32_pminub,
	__builtin_ia32_pminsw, __builtin_ia32_psadbw, __builtin_ia32_pmovmskb,
	__builtin_ia32_pshufw, __builtin_ia32_cvtpd2pi,
	__builtin_ia32_cvttpd2pi, __builtin_ia32_cvtpi2pd,
	__builtin_ia32_pmuludq, __builtin_ia32_pabsb, __builtin_ia32_pabsw,
	__builtin_ia32_pabsd, __builtin_ia32_phaddw, __builtin_ia32_phaddd,
	__builtin_ia32_phaddsw, __builtin_ia32_phsubw, __builtin_ia32_phsubd,
	__builtin_ia32_phsubsw, __builtin_ia32_pmaddubsw,
	__builtin_ia32_pmulhrsw, __builtin_ia32_pshufb, __builtin_ia32_psignb,
	__builtin_ia32_psignw, __builtin_ia32_psignd, __builtin_ia32_movntq,
	__builtin_ia32_paddq, __builtin_ia32_psubq, __builtin_ia32_palignr):
	Add OPTION_MASK_ISA_MMX.

	* gcc.target/i386/pr82483-1.c: New test.
	* gcc.target/i386/pr82483-2.c: New test.

Co-Authored-By: H.J. Lu <hongjiu.lu@intel.com>

From-SVN: r253609

https://gcc.gnu.org/ml/gcc-patches/2017-10/msg00618.html
	* decl2.c (struct mangled_decl_hash): New hash traits.
	(mangled_decls): Make hash_table<mangled_decl_hash>.
	(generate_mangling_alias, record_mangling): Adjust.

From-SVN: r253608

2017-10-10  Will Schmidt <will_schmidt@vnet.ibm.com>

	* gcc.target/powerpc/fold-vec-mult-int128-p8.c: Update options
	* gcc.target/powerpc/fold-vec-mult-int128-p9.c: Update expected
	instruction list.

From-SVN: r253606

https://gcc.gnu.org/ml/gcc-patches/2017-10/msg00611.html
	libcpp/
	PR preprocessor/82506
	* macro.c (cpp_quote_string): Escape raw LFs.

	gcc/testsuite/
	PR preprocessor/82506
	* g++.dg/cpp/string-3.C: New.

From-SVN: r253605

2017-10-10  Andreas Tobler  <andreast@gcc.gnu.org>

    * config.gcc (armv7*-*-freebsd*): New target.
    (armv6*-*-freebsd*): Remove obsolete TARGET_FREEBSD_ARMv6 define.

From-SVN: r253602

	* call.c (add_function_candidate): Use build_address.
	(build_op_call_1): Call mark_lvalue_use early.
	(build_over_call): Handle error from build_this.
	* constexpr.c (cxx_bind_parameters_in_call): Use build_address.
	(cxx_eval_increment_expression): Don't use rvalue().
	* cvt.c (convert_to_void): Use mark_discarded_use.
	* expr.c (mark_use): Handle PARM_DECL, NON_DEPENDENT_EXPR.  Fix
	reference handling.  Don't copy the expression.
	(mark_discarded_use): New.
	* lambda.c (insert_capture_proxy): Add some sanity checking.
	(maybe_add_lambda_conv_op): Set cp_unevaluated_operand.
	* pt.c (register_local_specialization): Add sanity check.
	* semantics.c (process_outer_var_ref): Fix check for existing proxy.
	* typeck.c (cp_build_addr_expr_1): Handle error from
	mark_lvalue_use.
	(cp_build_modify_expr): Call mark_lvalue_use_nonread, handle error
	from rvalue.

	Handle generic lambda capture in dependent expressions.
	* lambda.c (need_generic_capture, dependent_capture_r)
	(do_dependent_capture): New.
	* pt.c (processing_nonlambda_template): Use need_generic_capture.
	* semantics.c (maybe_cleanup_point_expr)
	(maybe_cleanup_point_expr_void, finish_goto_stmt)
	(maybe_convert_cond): Call do_dependent_capture.
	* typeck.c (build_static_cast): Remove dependent capture handling.

From-SVN: r253601

	* typeck.c (condition_conversion): Assert !processing_template_decl.
	* semantics.c (finish_omp_clauses): Don't
	fold_build_cleanup_point_expr if processing_template_decl.
	(outer_var_p): A temporary can't be from an outer scope.
	* pt.c (type_dependent_expression_p): Fix dependency checking of
	functions without DECL_TEMPLATE_INFO.
	(instantiate_decl): Use lss_copy.
	* constexpr.c (is_valid_constexpr_fn): Fix lambdas before C++17.

From-SVN: r253600

	* typeck.c (check_return_expr): Check non-dependent conversion in
	templates.
	* constraint.cc (check_function_concept): Don't complain about an
	empty concept if seen_error.

From-SVN: r253599

	* x86-tune.def (X86_TUNE_AVOID_FALSE_DEP_FOR_BMI, X86_TUNE_ADJUST_UNROLL,
	X86_TUNE_ONE_IF_CONV_INSN): Move to right spot in the file.

From-SVN: r253598

[testsuite]

2017-10-10  Will Schmidt <will_schmidt@vnet.ibm.com>
	* gcc.target/powerpc/fold-vec-cmp-char.c: New.
	* gcc.target/powerpc/fold-vec-cmp-double.c: New.
	* gcc.target/powerpc/fold-vec-cmp-float.c: New.
	* gcc.target/powerpc/fold-vec-cmp-int.c: New.
	* gcc.target/powerpc/fold-vec-cmp-longlong.c: New.
	* gcc.target/powerpc/fold-vec-cmp-short.c: New.

From-SVN: r253597

The wide_int routines allow things like:

   wi::add (t, 1)

to add 1 to an INTEGER_CST T in its native precision.  But we also have:

   wi::to_offset (t)      // Treat T as an offset_int
   wi::to_widest (t)      // Treat T as a widest_int

Recently we also gained:

   wi::to_wide (t, prec)  // Treat T as a wide_int in preccision PREC

This patch therefore requires:

   wi::to_wide (t)

when operating on INTEGER_CSTs in their native precision.  This is
just as efficient, and makes it clearer that a deliberate choice is
being made to treat the tree as a wide_int in its native precision.
This also removes the inconsistency that

a) INTEGER_CSTs in their native precision can be used without an accessor
   but must use wi:: functions instead of C++ operators

b) the other forms need an explicit accessor but the result can be used
   with C++ operators.

It also helps with SVE, where there's the additional possibility
that the tree could be a runtime value.

2017-10-10  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* wide-int.h (wide_int_ref_storage): Make host_dependent_precision
	a template parameter.
	(WIDE_INT_REF_FOR): Update accordingly.
	* tree.h (wi::int_traits <const_tree>): Delete.
	(wi::tree_to_widest_ref, wi::tree_to_offset_ref): New typedefs.
	(wi::to_widest, wi::to_offset): Use them.  Expand commentary.
	(wi::tree_to_wide_ref): New typedef.
	(wi::to_wide): New function.
	* calls.c (get_size_range): Use wi::to_wide when operating on
	trees as wide_ints.
	* cgraph.c (cgraph_node::create_thunk): Likewise.
	* config/i386/i386.c (ix86_data_alignment): Likewise.
	(ix86_local_alignment): Likewise.
	* dbxout.c (stabstr_O): Likewise.
	* dwarf2out.c (add_scalar_info, gen_enumeration_type_die): Likewise.
	* expr.c (const_vector_from_tree): Likewise.
	* fold-const-call.c (host_size_t_cst_p, fold_const_call_1): Likewise.
	* fold-const.c (may_negate_without_overflow_p, negate_expr_p)
	(fold_negate_expr_1, int_const_binop_1, const_binop)
	(fold_convert_const_int_from_real, optimize_bit_field_compare)
	(all_ones_mask_p, sign_bit_p, unextend, extract_muldiv_1)
	(fold_div_compare, fold_single_bit_test, fold_plusminus_mult_expr)
	(pointer_may_wrap_p, expr_not_equal_to, fold_binary_loc)
	(fold_ternary_loc, multiple_of_p, fold_negate_const, fold_abs_const)
	(fold_not_const, round_up_loc): Likewise.
	* gimple-fold.c (gimple_fold_indirect_ref): Likewise.
	* gimple-ssa-warn-alloca.c (alloca_call_type_by_arg): Likewise.
	(alloca_call_type): Likewise.
	* gimple.c (preprocess_case_label_vec_for_gimple): Likewise.
	* godump.c (go_output_typedef): Likewise.
	* graphite-sese-to-poly.c (tree_int_to_gmp): Likewise.
	* internal-fn.c (get_min_precision): Likewise.
	* ipa-cp.c (ipcp_store_vr_results): Likewise.
	* ipa-polymorphic-call.c
	(ipa_polymorphic_call_context::ipa_polymorphic_call_context): Likewise.
	* ipa-prop.c (ipa_print_node_jump_functions_for_edge): Likewise.
	(ipa_modify_call_arguments): Likewise.
	* match.pd: Likewise.
	* omp-low.c (scan_omp_1_op, lower_omp_ordered_clauses): Likewise.
	* print-tree.c (print_node_brief, print_node): Likewise.
	* stmt.c (expand_case): Likewise.
	* stor-layout.c (layout_type): Likewise.
	* tree-affine.c (tree_to_aff_combination): Likewise.
	* tree-cfg.c (group_case_labels_stmt): Likewise.
	* tree-data-ref.c (dr_analyze_indices): Likewise.
	(prune_runtime_alias_test_list): Likewise.
	* tree-dump.c (dequeue_and_dump): Likewise.
	* tree-inline.c (remap_gimple_op_r, copy_tree_body_r): Likewise.
	* tree-predcom.c (is_inv_store_elimination_chain): Likewise.
	* tree-pretty-print.c (dump_generic_node): Likewise.
	* tree-scalar-evolution.c (iv_can_overflow_p): Likewise.
	(simple_iv_with_niters): Likewise.
	* tree-ssa-address.c (addr_for_mem_ref): Likewise.
	* tree-ssa-ccp.c (ccp_finalize, evaluate_stmt): Likewise.
	* tree-ssa-loop-ivopts.c (constant_multiple_of): Likewise.
	* tree-ssa-loop-niter.c (split_to_var_and_offset)
	(refine_value_range_using_guard, number_of_iterations_ne_max)
	(number_of_iterations_lt_to_ne, number_of_iterations_lt)
	(get_cst_init_from_scev, record_nonwrapping_iv)
	(scev_var_range_cant_overflow): Likewise.
	* tree-ssa-phiopt.c (minmax_replacement): Likewise.
	* tree-ssa-pre.c (compute_avail): Likewise.
	* tree-ssa-sccvn.c (vn_reference_fold_indirect): Likewise.
	(vn_reference_maybe_forwprop_address, valueized_wider_op): Likewise.
	* tree-ssa-structalias.c (get_constraint_for_ptr_offset): Likewise.
	* tree-ssa-uninit.c (is_pred_expr_subset_of): Likewise.
	* tree-ssanames.c (set_nonzero_bits, get_nonzero_bits): Likewise.
	* tree-switch-conversion.c (collect_switch_conv_info, array_value_type)
	(dump_case_nodes, try_switch_expansion): Likewise.
	* tree-vect-loop-manip.c (vect_gen_vector_loop_niters): Likewise.
	(vect_do_peeling): Likewise.
	* tree-vect-patterns.c (vect_recog_bool_pattern): Likewise.
	* tree-vect-stmts.c (vectorizable_load): Likewise.
	* tree-vrp.c (compare_values_warnv, vrp_int_const_binop): Likewise.
	(zero_nonzero_bits_from_vr, ranges_from_anti_range): Likewise.
	(extract_range_from_binary_expr_1, adjust_range_with_scev): Likewise.
	(overflow_comparison_p_1, register_edge_assert_for_2): Likewise.
	(is_masked_range_test, find_switch_asserts, maybe_set_nonzero_bits)
	(vrp_evaluate_conditional_warnv_with_ops, intersect_ranges): Likewise.
	(range_fits_type_p, two_valued_val_range_p, vrp_finalize): Likewise.
	(evrp_dom_walker::before_dom_children): Likewise.
	* tree.c (cache_integer_cst, real_value_from_int_cst, integer_zerop)
	(integer_all_onesp, integer_pow2p, integer_nonzerop, tree_log2)
	(tree_floor_log2, tree_ctz, mem_ref_offset, tree_int_cst_sign_bit)
	(tree_int_cst_sgn, get_unwidened, int_fits_type_p): Likewise.
	(get_type_static_bounds, num_ending_zeros, drop_tree_overflow)
	(get_range_pos_neg): Likewise.
	* ubsan.c (ubsan_expand_ptr_ifn): Likewise.
	* config/darwin.c (darwin_mergeable_constant_section): Likewise.
	* config/aarch64/aarch64.c (aapcs_vfp_sub_candidate): Likewise.
	* config/arm/arm.c (aapcs_vfp_sub_candidate): Likewise.
	* config/avr/avr.c (avr_fold_builtin): Likewise.
	* config/bfin/bfin.c (bfin_local_alignment): Likewise.
	* config/msp430/msp430.c (msp430_attr): Likewise.
	* config/nds32/nds32.c (nds32_insert_attributes): Likewise.
	* config/powerpcspe/powerpcspe-c.c
	(altivec_resolve_overloaded_builtin): Likewise.
	* config/powerpcspe/powerpcspe.c (rs6000_aggregate_candidate)
	(rs6000_expand_ternop_builtin): Likewise.
	* config/rs6000/rs6000-c.c
	(altivec_resolve_overloaded_builtin): Likewise.
	* config/rs6000/rs6000.c (rs6000_aggregate_candidate): Likewise.
	(rs6000_expand_ternop_builtin): Likewise.
	* config/s390/s390.c (s390_handle_hotpatch_attribute): Likewise.

gcc/ada/
	* gcc-interface/decl.c (annotate_value): Use wi::to_wide when
	operating on trees as wide_ints.

gcc/c/
	* c-parser.c (c_parser_cilk_clause_vectorlength): Use wi::to_wide when
	operating on trees as wide_ints.
	* c-typeck.c (build_c_cast, c_finish_omp_clauses): Likewise.
	(c_tree_equal): Likewise.

gcc/c-family/
	* c-ada-spec.c (dump_generic_ada_node): Use wi::to_wide when
	operating on trees as wide_ints.
	* c-common.c (pointer_int_sum): Likewise.
	* c-pretty-print.c (pp_c_integer_constant): Likewise.
	* c-warn.c (match_case_to_enum_1): Likewise.
	(c_do_switch_warnings): Likewise.
	(maybe_warn_shift_overflow): Likewise.

gcc/cp/
	* cvt.c (ignore_overflows): Use wi::to_wide when
	operating on trees as wide_ints.
	* decl.c (check_array_designated_initializer): Likewise.
	* mangle.c (write_integer_cst): Likewise.
	* semantics.c (cp_finish_omp_clause_depend_sink): Likewise.

gcc/fortran/
	* target-memory.c (gfc_interpret_logical): Use wi::to_wide when
	operating on trees as wide_ints.
	* trans-const.c (gfc_conv_tree_to_mpz): Likewise.
	* trans-expr.c (gfc_conv_cst_int_power): Likewise.
	* trans-intrinsic.c (trans_this_image): Likewise.
	(gfc_conv_intrinsic_bound): Likewise.
	(conv_intrinsic_cobound): Likewise.

gcc/lto/
	* lto.c (compare_tree_sccs_1): Use wi::to_wide when
	operating on trees as wide_ints.

gcc/objc/
	* objc-act.c (objc_decl_method_attributes): Use wi::to_wide when
	operating on trees as wide_ints.

From-SVN: r253595