re PR tree-optimization/87117 (ICE in eliminate_dom_walker::eliminate_cleanup(bool) at gcc/gcc/tree-ssa-sccvn.c:5431 since r263875)

2018-08-28  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/87117
	* tree-ssa-pre.c (compute_avail): Do not make expressions
	with predicated values available.
	(get_expr_value_id): Assert we do not run into predicated value
	expressions.

	* gcc.dg/pr87117-2.c: New testcase.

From-SVN: r263910

re PR tree-optimization/87117 (ICE in eliminate_dom_walker::eliminate_cleanup(bool) at gcc/gcc/tree-ssa-sccvn.c:5431 since r263875)

2018-08-28  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/87117
	* tree-ssa-operands.c (add_stmt_operand): STRING_CST may
	get virtual operands.
	(get_expr_operands): Handle STRING_CST like other decls.

	* gcc.dg/lvalue-5.c: New testcase.

From-SVN: r263908

2018-08-28  Martin Liska  <mliska@suse.cz>

	* tree.h: Update documentation of fndecl_built_in_p
	functions.

From-SVN: r263907

	PR tree-optimization/87110
	* tree-ssa-dse.c (compute_trims): Handle non-constant
	TYPE_SIZE_UNIT.

	PR tree-optimization/87110
	* gcc.c-torture/compile/pr87110.c: New test.

From-SVN: r263906

PR tree-optimization/86914 - wrong code with strlen() of poor-man's flexible array member plus offset

gcc/ChangeLog:

	PR tree-optimization/86914
	* tree-ssa-strlen.c (maybe_set_strlen_range): Avoid MEM_REF.

gcc/testsuite/ChangeLog:

	PR tree-optimization/86914
	* gcc.dg/strlenopt-57.c: New test.

From-SVN: r263905

From-SVN: r263904

gcc/ChangeLog:

	PR tree-optimization/87112
	* builtins.c (expand_builtin_strnlen): Convert c_strlen result to
	the type of the bound argument.

gcc/testsuite/ChangeLog:

	PR tree-optimization/87112
	* gcc.dg/pr87112.c: New test.

From-SVN: r263900

This patch adds a fix-it hint to missing "typename" errors in the C++
frontend, suggesting the insertion of "typename ".

This addresses part of PR c++/63392; however it does not improve the
error-recovery for such cases.

gcc/cp/ChangeLog:
	PR c++/63392
	* parser.c (cp_parser_diagnose_invalid_type_name): Add fix-it
	hint.

gcc/testsuite/ChangeLog:
	PR c++/63392
	* g++.dg/diagnostic/missing-typename.C: New test.

From-SVN: r263899

tree-ssa-dse.c (compute_trims): Handle case where the reference's type does not have a TYPE_SIZE_UNIT.

	* tree-ssa-dse.c (compute_trims): Handle case where the reference's
	type does not have a TYPE_SIZE_UNIT.

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

From-SVN: r263896

	PR c++/86993
	* cp-tree.h (cxx_readonly_error): Add location_t argument.
	* typeck2.c (cxx_readonly_error): Add LOC argument, pass it to
	ERROR_FOR_ASSIGNMENT macro and readonly_error.  Add LOC argument
	to ERROR_FOR_ASSIGNMENT macro, use error_at instead of error and
	pass LOC to it.  Formatting fixes.
	* typeck.c (cp_build_unary_op): Pass location to cxx_readonly_error.
	(cp_build_modify_expr): Pass loc to cxx_readonly_error.
	* semantics.c (finish_asm_stmt): Pass input_location to
	cxx_readonly_error.

	* g++.dg/diagnostic/pr86993.C: New test.

From-SVN: r263891

2018-08-27  Steve Ellcey  <sellcey@cavium.com>

	* config/aarch64/aarch64-speculation.cc: Replace include of cfg.h
	with include of backend.h.

From-SVN: r263890

2018-08-27  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/86927
	* tree-vect-loop.c (vect_create_epilog_for_reduction): Properly
	use const cond reduction code.

	* gcc.dg/vect/pr86927.c: New testcase.

From-SVN: r263888

	PR tree-optimization/85758
	* match.pd ((X & Y) ^ Y): Add :s qualifier to inner expression.

From-SVN: r263887

From-SVN: r263886

This patch tweaks maybe_add_include_fixit so that if we're emitting a note
about adding the header file, the note's primary location will be replaced
by that of the fix-it hint, to avoid repeating a location we've already
emitted (or one close to it).

For example, this simplifies:

  ../x86_64-pc-linux-gnu/libstdc++-v3/include/vector:87:27: error: msg 1
  87 |       using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
     |                           ^~~~~~
  ../x86_64-pc-linux-gnu/libstdc++-v3/include/vector:87:22: note: msg 2
   73 | # include <debug/vector>
  +++ |+#include <vector>
   74 | #endif
  ....
   87 |       using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
      |                      ^~~

to:

  ../x86_64-pc-linux-gnu/libstdc++-v3/include/vector:87:27: error: msg 1
  87 |       using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
     |                           ^~~~~~
  ../x86_64-pc-linux-gnu/libstdc++-v3/include/vector:74:1: note: msg 2
   73 | # include <debug/vector>
  +++ |+#include <vector>
   74 | #endif

eliminating the repetition of line 87 in the note.

Doing so requires converting show_caret_p to a tri-state, to avoid
meaninglessly printing a caret for the first column in the next line
(and colorizing it):

  ../x86_64-pc-linux-gnu/libstdc++-v3/include/vector:74:1: note: msg 2
   73 | # include <debug/vector>
  +++ |+#include <vector>
   74 | #endif
      | ^

gcc/c-family/ChangeLog:
	PR 87091
	* c-common.c (c_cpp_error): Update for conversion of show_caret_p
	to a tri-state.
	(maybe_suggest_missing_token_insertion): Likewise.
	(maybe_add_include_fixit): Add param "override_location".  If set,
	and source-printing is enabled, then override the rich_location's
	primary location with that of the insertion point for the fix-it
	hint, marking it with SHOW_LINES_WITHOUT_RANGE.
	* c-common.h (extern void maybe_add_include_fixit): Add bool
	param.
	* c-format.c (selftest::test_type_mismatch_range_labels): Update
	for conversion of show_caret_p to a tri-state.
	* c-warn.c (warn_for_restrict): Likewise.
	* known-headers.cc
	(suggest_missing_header::~suggest_missing_header): Update call to
	maybe_add_include_fixit to suggest overriding the location, as it
	is for a note.

gcc/c/ChangeLog:
	PR 87091
	* c-decl.c (implicitly_declare): Update call to
	maybe_add_include_fixit to suggest overriding the location, as it
	is for a note.
	* c-objc-common.c (c_tree_printer): Update for conversion of
	show_caret_p to a tri-state.

gcc/cp/ChangeLog:
	PR 87091
	* decl.c (grokdeclarator): Update for conversion of show_caret_p
	to a tri-state.
	* error.c (cp_printer): Likewise.
	* name-lookup.c (maybe_suggest_missing_std_header): Update call to
	maybe_add_include_fixit to suggest overriding the location, as it
	is for a note.
	* parser.c (cp_parser_string_literal): Update for conversion of
	show_caret_p to a tri-state.
	(cp_parser_elaborated_type_specifier): Likewise.
	(set_and_check_decl_spec_loc): Likewise.
	* pt.c (listify): Update call to maybe_add_include_fixit to not
	override the location, as it is for an error.
	* rtti.c (typeid_ok_p): Likewise.

gcc/ChangeLog:
	PR 87091
	* diagnostic-show-locus.c (class layout_range): Update for
	conversion of show_caret_p to a tri-state.
	(layout_range::layout_range): Likewise.
	(make_range): Likewise.
	(layout::maybe_add_location_range): Likewise.
	(layout::should_print_annotation_line_p): Don't show annotation
	lines for ranges that are SHOW_LINES_WITHOUT_RANGE.
	(layout::get_state_at_point): Update for conversion of
	show_caret_p to a tri-state.  Bail out early for
	SHOW_LINES_WITHOUT_RANGE, so that such ranges don't affect
	underlining or source colorization.
	(gcc_rich_location::add_location_if_nearby): Update for conversion
	of show_caret_p to a tri-state.
	(selftest::test_one_liner_multiple_carets_and_ranges): Likewise.
	(selftest::test_one_liner_fixit_replace_equal_secondary_range):
	Likewise.
	(selftest::test_one_liner_labels): Likewise.
	* gcc-rich-location.c (gcc_rich_location::add_expr): Update for
	conversion of show_caret_p to a tri-state.
	* pretty-print.c (text_info::set_location): Likewise.
	* pretty-print.h (text_info::set_location): Likewise.
	* substring-locations.c (format_warning_n_va): Likewise.
	* tree-diagnostic.c (default_tree_printer): Likewise.
	* tree-pretty-print.c (newline_and_indent): Likewise.

gcc/fortran/ChangeLog:
	PR 87091
	* error.c (gfc_format_decoder): Update for conversion of
	show_caret_p to a tri-state.

gcc/testsuite/ChangeLog:
	PR 87091
	* gcc.dg/empty.h: New file.
	* gcc.dg/fixits-pr84852-1.c: Update for move of fix-it hint to
	top of file and removal of redundant second printing of warning
	location.
	* gcc.dg/fixits-pr84852-2.c: Likewise.
	* gcc.dg/missing-header-fixit-3.c: Likewise.
	* gcc.dg/missing-header-fixit-4.c: New test.
	* gcc.dg/plugin/diagnostic_plugin_test_show_locus.c: Update for
	conversion of show_caret_p to a tri-state.

libcpp/ChangeLog:
	PR 87091
	* include/line-map.h (enum range_display_kind): New enum.
	(struct location_range): Replace field "m_show_caret_p" with
	"m_range_display_kind", converting from bool to the new enum.
	(class rich_location): Add example of line insertion fix-it hint.
	(rich_location::add_range): Convert param "show_caret_p" from bool
	to enum range_display_kind and rename to "range_display_kind",
	giving it a default of SHOW_RANGE_WITHOUT_CARET.
	(rich_location::set_range): Likewise, albeit without a default.
	* line-map.c (rich_location::rich_location): Update for conversion
	of show_caret_p to tri-state enum.
	(rich_location::add_range): Likewise.
	(rich_location::set_range): Likewise.

From-SVN: r263885

This patch tweaks how we print line-insertion fix-it hints, so that
the line before the insertion point is also printed, to give the user
more context on the proposed change.

For example, it changes:

  ../x86_64-pc-linux-gnu/libstdc++-v3/include/vector:87:22: note: message
  +++ |+#include <vector>
   74 | #endif
  ....
   87 |       using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
      |                      ^~~

to:

  ../x86_64-pc-linux-gnu/libstdc++-v3/include/vector:87:22: note: message
   73 | # include <debug/vector>
  +++ |+#include <vector>
   74 | #endif
  ....
   87 |       using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
      |                      ^~~

gcc/ChangeLog:
	PR 87091
	* diagnostic-show-locus.c (get_line_span_for_fixit_hint): Show the
	line above for line-insertion fix-it hints.
	(selftest::test_fixit_insert_containing_newline): Update the
	expected results, and add a test with line-numbering enabled.

gcc/testsuite/ChangeLog:
	PR 87091
	* g++.dg/pr85523.C: Extend expected output to show line
	before line-insertion fix-it hint.
	* gcc.dg/plugin/diagnostic-test-show-locus-bw-line-numbers.c
	(test_fixit_insert_newline): Add previous line to expected output.
	* gcc.dg/plugin/diagnostic-test-show-locus-bw.c: Likewise.
	* gcc.dg/plugin/diagnostic-test-show-locus-color.c: Likewise.

From-SVN: r263884

2018-08-27  Martin Liska  <mliska@suse.cz>

        PR sanitizer/86962
	* sanopt.c (sanitize_rewrite_addressable_params): Ignore
        params with DECL_HAS_VALUE_EXPR_P.
2018-08-27  Martin Liska  <mliska@suse.cz>

        PR sanitizer/86962
	* gcc.dg/asan/pr86962.c: New test.

From-SVN: r263882

2018-08-27  Martin Liska  <mliska@suse.cz>

	* config/i386/i386.c (ix86_expand_set_or_movmem): Dump
        selected expansion strategy.
2018-08-27  Martin Liska  <mliska@suse.cz>

	* gcc.dg/tree-prof/val-prof-10.c: New test.

From-SVN: r263881

2018-08-27  Martin Liska  <mliska@suse.cz>

	* builtins.h (is_builtin_fn): Remove and fndecl_built_in_p.
	* builtins.c (is_builtin_fn): Likewise.
	* attribs.c (diag_attr_exclusions): Use new function
        fndecl_built_in_p and remove check for FUNCTION_DECL if
        possible.
	(builtin_mathfn_code): Likewise.
	(fold_builtin_expect): Likewise.
	(fold_call_expr): Likewise.
	(fold_builtin_call_array): Likewise.
	(fold_call_stmt): Likewise.
	(set_builtin_user_assembler_name): Likewise.
	(is_simple_builtin): Likewise.
	* calls.c (gimple_alloca_call_p): Likewise.
	(maybe_warn_nonstring_arg): Likewise.
	* cfgexpand.c (expand_call_stmt): Likewise.
	* cgraph.c (cgraph_update_edges_for_call_stmt_node): Likewise.
	(cgraph_edge::verify_corresponds_to_fndecl): Likewise.
	(cgraph_node::verify_node): Likewise.
	* cgraphclones.c (build_function_decl_skip_args): Likewise.
	(cgraph_node::create_clone): Likewise.
	* config/arm/arm.c (arm_insert_attributes): Likewise.
	* config/i386/i386.c (ix86_gimple_fold_builtin): Likewise.
	* dse.c (scan_insn): Likewise.
	* expr.c (expand_expr_real_1): Likewise.
	* fold-const.c (operand_equal_p): Likewise.
	(fold_binary_loc): Likewise.
	* gimple-fold.c (gimple_fold_stmt_to_constant_1): Likewise.
	* gimple-low.c (lower_stmt): Likewise.
	* gimple-pretty-print.c (dump_gimple_call): Likewise.
	* gimple-ssa-warn-restrict.c (wrestrict_dom_walker::check_call): Likewise.
	* gimple.c (gimple_build_call_from_tree): Likewise.
	(gimple_call_builtin_p): Likewise.
	(gimple_call_combined_fn): Likewise.
	* gimplify.c (gimplify_call_expr): Likewise.
	(gimple_boolify): Likewise.
	(gimplify_modify_expr): Likewise.
	(gimplify_addr_expr): Likewise.
	* hsa-gen.c (gen_hsa_insns_for_call): Likewise.
	* ipa-cp.c (determine_versionability): Likewise.
	* ipa-fnsummary.c (compute_fn_summary): Likewise.
	* ipa-param-manipulation.c (ipa_modify_formal_parameters): Likewise.
	* ipa-split.c (visit_bb): Likewise.
	(split_function): Likewise.
	* ipa-visibility.c (cgraph_externally_visible_p): Likewise.
	* lto-cgraph.c (input_node): Likewise.
	* lto-streamer-out.c (write_symbol): Likewise.
	* omp-low.c (setjmp_or_longjmp_p): Likewise.
	(lower_omp_1): Likewise.
	* predict.c (strip_predict_hints): Likewise.
	* print-tree.c (print_node): Likewise.
	* symtab.c (symtab_node::output_to_lto_symbol_table_p): Likewise.
	* trans-mem.c (is_tm_irrevocable): Likewise.
	(is_tm_load): Likewise.
	(is_tm_simple_load): Likewise.
	(is_tm_store): Likewise.
	(is_tm_simple_store): Likewise.
	(is_tm_abort): Likewise.
	(tm_region_init_1): Likewise.
	* tree-call-cdce.c (gen_shrink_wrap_conditions): Likewise.
	* tree-cfg.c (verify_gimple_call): Likewise.
	(move_stmt_r): Likewise.
	(stmt_can_terminate_bb_p): Likewise.
	* tree-eh.c (lower_eh_constructs_2): Likewise.
	* tree-if-conv.c (if_convertible_stmt_p): Likewise.
	* tree-inline.c (remap_gimple_stmt): Likewise.
	(copy_bb): Likewise.
	(estimate_num_insns): Likewise.
	(fold_marked_statements): Likewise.
	* tree-sra.c (scan_function): Likewise.
	* tree-ssa-ccp.c (surely_varying_stmt_p): Likewise.
	(optimize_stack_restore): Likewise.
	(pass_fold_builtins::execute): Likewise.
	* tree-ssa-dce.c (mark_stmt_if_obviously_necessary): Likewise.
	(mark_all_reaching_defs_necessary_1): Likewise.
	* tree-ssa-dom.c (dom_opt_dom_walker::optimize_stmt): Likewise.
	* tree-ssa-forwprop.c (simplify_builtin_call): Likewise.
	(pass_forwprop::execute): Likewise.
	* tree-ssa-loop-im.c (stmt_cost): Likewise.
	* tree-ssa-math-opts.c (pass_cse_reciprocals::execute): Likewise.
	* tree-ssa-sccvn.c (fully_constant_vn_reference_p): Likewise.
	* tree-ssa-strlen.c (get_string_length): Likewise.
	* tree-ssa-structalias.c (handle_lhs_call): Likewise.
	(find_func_aliases_for_call): Likewise.
	* tree-ssa-ter.c (find_replaceable_in_bb): Likewise.
	* tree-stdarg.c (optimize_va_list_gpr_fpr_size): Likewise.
	* tree-tailcall.c (find_tail_calls): Likewise.
	* tree.c (need_assembler_name_p): Likewise.
	(free_lang_data_in_decl): Likewise.
	(get_call_combined_fn): Likewise.
	* ubsan.c (is_ubsan_builtin_p): Likewise.
	* varasm.c (incorporeal_function_p): Likewise.
	* tree.h (DECL_BUILT_IN): Remove and replace with
        fndecl_built_in_p.
	(DECL_BUILT_IN_P): Transfort to fndecl_built_in_p.
	(fndecl_built_in_p): New.
2018-08-27  Martin Liska  <mliska@suse.cz>

	* gcc-interface/decl.c (update_profile): Use new function
        fndecl_built_in_p and remove check for FUNCTION_DECL if
        possible.
	* gcc-interface/gigi.h (call_is_atomic_load): Likewise.
	* gcc-interface/utils.c (gnat_pushdecl): Likewise.
2018-08-27  Martin Liska  <mliska@suse.cz>

	* c-common.c (check_function_restrict): Use new function
        fndecl_built_in_p and remove check for FUNCTION_DECL if
        possible.
	(check_builtin_function_arguments): Likewise.
	(reject_gcc_builtin): Likewise.
	* c-warn.c (sizeof_pointer_memaccess_warning): Likewise.
2018-08-27  Martin Liska  <mliska@suse.cz>

	* c-decl.c (locate_old_decl): Use new function
        fndecl_built_in_p and remove check for FUNCTION_DECL if
        possible.
	(diagnose_mismatched_decls): Likewise.
	(merge_decls): Likewise.
	(warn_if_shadowing): Likewise.
	(pushdecl): Likewise.
	(implicitly_declare): Likewise.
	* c-parser.c (c_parser_postfix_expression_after_primary): Likewise.
	* c-tree.h (C_DECL_ISNT_PROTOTYPE): Likewise.
	* c-typeck.c (build_function_call_vec): Likewise.
	(convert_arguments): Likewise.
2018-08-27  Martin Liska  <mliska@suse.cz>

	* call.c (build_call_a): Use new function
        fndecl_built_in_p and remove check for FUNCTION_DECL if
        possible.
	(build_cxx_call): Likewise.
	* constexpr.c (constexpr_fn_retval): Likewise.
	(cxx_eval_builtin_function_call): Likewise.
	(cxx_eval_call_expression): Likewise.
	(potential_constant_expression_1): Likewise.
	* cp-gimplify.c (cp_gimplify_expr): Likewise.
	(cp_fold): Likewise.
	* decl.c (decls_match): Likewise.
	(validate_constexpr_redeclaration): Likewise.
	(duplicate_decls): Likewise.
	(make_rtl_for_nonlocal_decl): Likewise.
	* name-lookup.c (consider_binding_level): Likewise.
	(cp_emit_debug_info_for_using): Likewise.
	* semantics.c (finish_call_expr): Likewise.
	* tree.c (builtin_valid_in_constant_expr_p): Likewise.
2018-08-27  Martin Liska  <mliska@suse.cz>

	* go-gcc.cc (Gcc_backend::call_expression): Use new function
        fndecl_built_in_p and remove check for FUNCTION_DECL if
        possible.
2018-08-27  Martin Liska  <mliska@suse.cz>

	* lto-lang.c (handle_const_attribute): Use new function
        fndecl_built_in_p and remove check for FUNCTION_DECL if
        possible.
	* lto-symtab.c (lto_symtab_merge_p): Likewise.
	(lto_symtab_merge_decls_1): Likewise.
	(lto_symtab_merge_symbols): Likewise.
	* lto.c (lto_maybe_register_decl): Likewise.
	(read_cgraph_and_symbols): Likewise.

From-SVN: r263880

2018-08-27  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/86847
	* tree-switch-conversion.c (switch_decision_tree::dump_case_nodes):
        Dump also subtree probability.
	(switch_decision_tree::do_jump_if_equal): New function.
	(switch_decision_tree::emit_case_nodes): Handle special
        situations in balanced tree that can be emitted much simpler.
        Fix calculation of probabilities that happen in tree expansion.
	* tree-switch-conversion.h (struct cluster): Add
        is_single_value_p.
	(struct simple_cluster): Likewise.
	(struct case_tree_node): Add new function has_child.
	(do_jump_if_equal): New.
2018-08-27  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/86847
	* gcc.dg/tree-ssa/switch-3.c: New test.
	* gcc.dg/tree-ssa/vrp105.c: Remove.

From-SVN: r263879

2018-08-27  Martin Liska  <mliska@suse.cz>

	* tree-switch-conversion.c (bit_test_cluster::find_bit_tests):
        Add new argument to bit_test_cluster constructor.
	(bit_test_cluster::emit): Set bits really number of values
        handlel by a test.
	(bit_test_cluster::hoist_edge_and_branch_if_true): Add
        probability argument.
	* tree-switch-conversion.h (struct bit_test_cluster):
        Add m_handles_entire_switch.
2018-08-27  Martin Liska  <mliska@suse.cz>

	* gcc.dg/tree-ssa/switch-2.c: New test.

From-SVN: r263878

2018-08-27  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/86702
	* tree-switch-conversion.c (jump_table_cluster::emit):
        Make probabilities even for values in jump table
        according to number of cases handled.
	(switch_decision_tree::compute_cases_per_edge): Pass
        argument to reset_out_edges_aux function.
	(switch_decision_tree::analyze_switch_statement): Likewise.
	* tree-switch-conversion.h (switch_decision_tree::reset_out_edges_aux):
        Make it static.

From-SVN: r263877

2018-08-27  Martin Liska  <mliska@suse.cz>

	* cfgexpand.c (expand_asm_stmt): Use label_to_block and pass
        cfun argument explicitly.
	* gimple-pretty-print.c (dump_gimple_switch): Likewise.
	* hsa-gen.c (gen_hsa_insns_for_switch_stmt): Use new
        function gimple_switch_default_bb.
	(convert_switch_statements):
	(expand_builtins):
	* ipa-fnsummary.c (set_switch_stmt_execution_predicate):
	* stmt.c (label_to_block_fn): Use label_to_block and pass
        cfun argument explicitly and use gimple_switch_label_bb.
	(expand_case): Likewise.
	* tree-cfg.c (lower_phi_internal_fn): Use label_to_block and pass
        cfun argument explicitly. Likewise.
	(make_edges_bb): Likewise.
	(make_cond_expr_edges): Likewise.
	(get_cases_for_edge): Likewise.
	(make_gimple_switch_edges): Likewise.
	(label_to_block_fn): Likewise.
	(label_to_block): Likewise.
	(make_goto_expr_edges): Likewise.
	(make_gimple_asm_edges): Likewise.
	(main_block_label): Likewise.
	(group_case_labels_stmt): Likewise.
	(find_taken_edge_computed_goto): Likewise.
	(find_taken_edge_switch_expr): Likewise.
	(gimple_verify_flow_info): Likewise.
	(gimple_redirect_edge_and_branch): Likewise.
	(gimple_switch_label_bb): New function.
	(gimple_switch_default_bb): Likewise.
	(gimple_switch_edge): Likewise.
	(gimple_switch_default_edge): Likewise.
	* tree-cfg.h (label_to_block_fn): Remove and replace ...
	(label_to_block): ... with this.
	(gimple_switch_label_bb): New.
	(gimple_switch_default_bb): Likewise.
	(gimple_switch_edge): Likewise.
	(gimple_switch_default_edge): Likewise.
	* tree-cfgcleanup.c (convert_single_case_switch): Use
        new gimple functions and pass new argument to label_to_block.
	(cleanup_control_flow_bb):
	* tree-eh.c (make_eh_dispatch_edges): Use label_to_block and pass
        cfun argument explicitly.
	(make_eh_edges): Likewise.
	(redirect_eh_dispatch_edge): Likewise.
	(lower_resx): Likewise.
	(lower_eh_dispatch): Likewise.
	(maybe_remove_unreachable_handlers): Likewise.
	(unsplit_eh): Likewise.
	(cleanup_empty_eh): Likewise.
	(verify_eh_edges): Likewise.
	(verify_eh_dispatch_edge): Likewise.
	* tree-ssa-dom.c (record_edge_info): Likewise.
	* tree-ssa-forwprop.c (simplify_gimple_switch_label_vec): Likewise.
	* tree-ssa-threadedge.c (thread_around_empty_blocks): Likewise.
	(thread_through_normal_block): Likewise.
	* tree-ssa-uncprop.c (associate_equivalences_with_edges): Likewise.
	* tree-ssa-uninit.c (convert_control_dep_chain_into_preds):
	* tree-switch-conversion.c (switch_conversion::collect): Use new
        gimple functions.
	(switch_conversion::check_final_bb): Likewise.
	(switch_conversion::gather_default_values): Pass new argument
        to label_to_block.
	(switch_conversion::build_constructors): Likewise.
	(switch_decision_tree::compute_cases_per_edge): Use new
        gimple_switch_edge function.
	(switch_decision_tree::analyze_switch_statement): Pass new argument
        to label_to_block.
	(switch_decision_tree::try_switch_expansion): Use
        gimple_switch_default_edge.
	* tree-vrp.c (find_switch_asserts): Pass new argument
        to label_to_block.
	* vr-values.c (vr_values::vrp_visit_switch_stmt): Likewise.
	(vr_values::simplify_switch_using_ranges): Likewise.

From-SVN: r263876

2018-08-27  Richard Biener  <rguenther@suse.de>

	* cfganal.h (rev_post_order_and_mark_dfs_back_seme): Declare.
	* cfganal.c (rev_post_order_and_mark_dfs_back_seme): New function.

	* tree-ssa-sccvn.h (struct vn_pval): New structure.
	(struct vn_nary_op_s): Add unwind_to member.  Add
	predicated_values flag and put result into a union together
	with a linked list of vn_pval.
	(struct vn_ssa_aux): Add name member to make maintaining
	a map of SSA name to vn_ssa_aux possible.  Remove no longer
	needed info, dfsnum, low, visited, on_sccstack, use_processed
	and range_info_anti_range_p members.
	(run_scc_vn, vn_eliminate, free_scc_vn, vn_valueize): Remove.
	(do_rpo_vn, run_rpo_vn, eliminate_with_rpo_vn, free_rpo_vn):
	New functions.
	(vn_valueize): New global.
	(vn_context_bb): Likewise.
	(VN_INFO_RANGE_INFO, VN_INFO_ANTI_RANGE_P, VN_INFO_RANGE_TYPE,
	VN_INFO_PTR_INFO): Remove.
	* tree-ssa-sccvn.c: ... (rewrite)
	(pass_fre::execute): For -O2+ initialize loops and run
	RPO VN in optimistic mode (iterating).  For -O1 and -Og
	run RPO VN in non-optimistic mode.
	* params.def (PARAM_SCCVN_MAX_SCC_SIZE): Remove.
	(PARAM_RPO_VN_MAX_LOOP_DEPTH): Add.
	* doc/invoke.texi (sccvn-max-scc-size): Remove.
	(rpo-vn-max-loop-depth): Document.
	* tree-ssa-alias.c (walk_non_aliased_vuses): Stop walking
	when valuezing the VUSE signals we walked out of the region.
	* tree-ssa-pre.c (phi_translate_1): Ignore predicated values.
	(phi_translate): Set VN context block to use for availability
	lookup.
	(compute_avail): Likewise.
	(pre_valueize): New function.
	(pass_pre::execute): Adjust to the RPO VN API.

	* tree-ssa-loop-ivcanon.c: Include tree-ssa-sccvn.h.
	(propagate_constants_for_unrolling): Remove.
	(tree_unroll_loops_completely): Perform value-numbering
	on the unrolled bodies loop parent.

	* g++.dg/torture/20180705-1.C: New testcase.
	* gcc.dg/tree-ssa/ssa-fre-67.c: Likewise.
	* gcc.dg/tree-ssa/ssa-ccp-14.c: Scan FRE dump.
	* gcc.dg/tree-ssa/ssa-fre-46.c: Use -O2.
	* gcc.dg/tree-ssa/vrp92.c: Disable FRE.
	* gcc.dg/pr83666.c: Drop --param=sccvn-max-scc-size option.
	* gcc.dg/pr85195.c: Likewise.
	* gcc.dg/pr85467.c: Likewise.
	* gcc.dg/torture/pr81790.c: Likewise.

	* gfortran.dg/reassoc_4.f: Change max-completely-peeled-insns
	param to current default.

From-SVN: r263875

2018-08-27  Richard Biener  <rguenther@suse.de>

	* tree-ssa-pre.c (compute_antic): Re-use inverted postorder
	for partial antic compute.

From-SVN: r263874

	PR rtl-optimization/87065
	* combine.c (simplify_if_then_else): Formatting fix.
	(if_then_else_cond): Guard MULT optimization with SCALAR_INT_MODE_P
	check.
	(known_cond): Don't return const_true_rtx for vector modes.  Use
	CONST0_RTX instead of const0_rtx.  Formatting fixes.

	* gcc.target/i386/pr87065.c: New test.

From-SVN: r263872

2018-08-27  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/87069
	* gcov.c (process_file): Record files already processed
        and warn about a file being processed multiple times.

From-SVN: r263871

2018-08-27  Martin Liska  <mliska@suse.cz>

        PR driver/83193
	* config/aarch64/aarch64.c (aarch64_override_options_internal):
        Set default values for x_aarch64_*_string strings.
	* config/aarch64/aarch64.opt: Remove --{march,mcpu,mtune}==
        prefix.  For -mabi do not print '=ABI' in help and use
        <option_value> format for -msve-vector-bits and -moverride
        options.

From-SVN: r263870

	* config/mips/frame-header-opt.c: Include "backend.h" rather than
	"cfg.h"

From-SVN: r263869

From-SVN: r263867

	* c.opt (Wredundant-move): New option.

	* typeck.c (treat_lvalue_as_rvalue_p): New function.
	(maybe_warn_pessimizing_move): Call convert_from_reference.
	Warn about redundant moves.

	* doc/invoke.texi: Document -Wredundant-move.

	* g++.dg/cpp0x/Wredundant-move1.C: New test.
	* g++.dg/cpp0x/Wredundant-move2.C: New test.
	* g++.dg/cpp0x/Wredundant-move3.C: New test.
	* g++.dg/cpp0x/Wredundant-move4.C: New test.

From-SVN: r263863

	PR c++/87080
	* typeck.c (maybe_warn_pessimizing_move): Do nothing in a template.

	* g++.dg/cpp0x/Wpessimizing-move5.C: New test.

From-SVN: r263862

From-SVN: r263860

2018-08-25  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR libfortran/86704
	* m4/matmul_internal.m4: Correct calculation of needed buffer size
	for arrays of shape (1,n).
	* 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
	* generated/matmulavx128_c10.c: Regenerated
	* generated/matmulavx128_c16.c: Regenerated
	* generated/matmulavx128_c4.c: Regenerated
	* generated/matmulavx128_c8.c: Regenerated
	* generated/matmulavx128_i1.c: Regenerated
	* generated/matmulavx128_i16.c: Regenerated
	* generated/matmulavx128_i2.c: Regenerated
	* generated/matmulavx128_i4.c: Regenerated
	* generated/matmulavx128_i8.c: Regenerated
	* generated/matmulavx128_r10.c: Regenerated
	* generated/matmulavx128_r16.c: Regenerated
	* generated/matmulavx128_r4.c: Regenerated
	* generated/matmulavx128_r8.c: Regenerated

2018-08-25  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR libfortran/86704
	* gfortran.dg/matmul_19.f90: New test.

From-SVN: r263856

	PR tree-optimization/87059
	* builtins.c (expand_builtin_strncmp): Convert MIN_EXPR operand
	to the same type as the other.
	* fold-const.c (fold_binary_loc): Assert expectation.

From-SVN: r263855

fix PR 86545

2018-08-25  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/86545
	* resolve.c (resolve_transfer): Correctly determine typespec for
	generic function calls, in order to throw a proper error.

2018-08-25  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/86545
	* gfortran.dg/generic_35.f90: New test case.

From-SVN: r263854

	* config/darwin.c (machopic_legitimize_pic_address): Clean up
	extraneous parentheses, dead code section and formatting.

From-SVN: r263851

	PR libstdc++/70694
	* configure.host (OPT_LDFLAGS): Don't append
	-fvisibility-inlines-hidden for newer Darwin.

From-SVN: r263850

From-SVN: r263849

With profiledbootstrap and --with-build-config=bootstrap-lto, linemap_add
may create a macro map when we run out of line map space.  This patch
changes start_location to UNKNOWN_LOCATION (0) in this case.

Tested with profiledbootstrap and --with-build-config=bootstrap-lto on
Linux/x86-64.

	PR bootstrap/86872
	* line-map.c (pure_location_p): Return true if linemap_lookup
	returns NULL.
	(linemap_add): Set start_location to 0 if we run out of line map
	space.

From-SVN: r263845