If the timeout subshell has no child processes,
    the "xargs | kill" will fail. Ensure there is
    some input for kill before calling it.
    
    Reviewed-on: https://go-review.googlesource.com/13295

From-SVN: r226719

From-SVN: r226716

sh.c (sh_recog_treg_set_expr): Return false during expand phase to avoid codegen differences with -g.

* config/sh/sh.c (sh_recog_treg_set_expr): Return false during
expand phase to avoid codegen differences with -g.

From-SVN: r226715

	* doc/texi2pod.pl: Escape braces in regexp involving @strong{...}.

From-SVN: r226714

gcc/c-family/
	* c-common.c (c_common_reswords): Add __is_same_as, concept, requires.
	* c-common.h (enum rid): Add RID_IS_SAME_AS, RID_CONCEPT, RID_REQUIRES.
	(D_CXX_CONCEPTS, D_CXX_CONCEPTS_FLAGS): New.
	* c-cppbuiltin.c (c_cpp_builtins): Define __cpp_concepts.
	* c-opts.c (set_std_cxx1z): Set flag_concepts.
	* c.opt (fconcepts): New.
gcc/cp/
	* constraint.cc, logic.cc: New files.
	* Make-lang.in (CXX_AND_OBJCXX_OBJS): Add constraint.o and logic.o.
	(c++.tags): Also process .cc files.
	* call.c (enum rejection_reason_code): Add rr_constraint_failure.
	(print_z_candidate): Handle it.
	(constraint_failure): New.
	(add_function_candidate): Check constraints.
	(build_new_function_call): Handle evaluating concepts.
	(joust): Check more_constrained.
	* class.c (add_method): Check equivalently_constrained.
	(build_clone): Copy constraints.
	(currently_open_class): Return tree.
	(resolve_address_of_overloaded_function): Check constraints.
	* constexpr.c (cxx_eval_constant_expression): Handle REQUIRES_EXPR.
	(potential_constant_expression_1): Likewise.
	* cp-objcp-common.c (cp_tree_size): Handle CONSTRAINT_INFO.
	(cp_common_init_ts): Handle WILDCARD_DECL and REQUIRES_EXPR.
	* cp-tree.def: Add CONSTRAINT_INFO, WILDCARD_DECL, REQUIRES_EXPR,
	SIMPLE_REQ, TYPE_REQ, COMPOUND_REQ, NESTED_REQ, PRED_CONSTR,
	EXPR_CONSTR, TYPE_CONSTR, ICONV_CONSTR, DEDUCT_CONSTR,
	EXCEPT_CONSTR, PARM_CONSTR, CONJ_CONSTR, DISJ_CONSTR.
	* cp-tree.h (struct tree_constraint_info, check_nonnull)
	(check_constraint_info, CI_TEMPLATE_REQS, CI_DECLARATOR_REQS)
	(CI_ASSOCIATED_CONSTRAINTS, CI_NORMALIZED_CONSTRAINTS)
	(CI_ASSUMPTIONS, TEMPLATE_PARMS_CONSTRAINTS)
	(TEMPLATE_PARM_CONSTRAINTS, COMPOUND_REQ_NOEXCEPT_P)
	(PLACEHOLDER_TYPE_CONSTRAINTS, PRED_CONSTR_EXPR, EXPR_CONSTR_EXPR)
	(TYPE_CONSTR_TYPE, ICONV_CONSTR_EXPR, ICONV_CONSTR_TYPE)
	(DEDUCT_CONSTR_EXPR, DEDUCT_CONSTR_PATTERN)
	(DEDUCT_CONSTR_PLACEHOLDER, EXCEPT_CONSTR_EXPR, PARM_CONSTR_PARMS)
	(PARM_CONSTR_OPERAND, CONSTRAINT_VAR_P, CONSTRAINED_PARM_CONCEPT)
	(CONSTRAINED_PARM_EXTRA_ARGS, CONSTRAINED_PARM_PROTOTYPE)
	(DECL_DECLARED_CONCEPT_P, WILDCARD_PACK_P, struct cp_unevaluated)
	(struct local_specialization_stack, enum auto_deduction_context)
	(variable_concept_p, concept_template_p)
	(struct deferring_access_check_sentinel): New.
	(enum cp_tree_node_structure_enum): Add TS_CP_CONSTRAINT_INFO.
	(union lang_tree_node): Add constraint_info field.
	(struct lang_decl_base): Add concept_p flag.
	(enum cp_decl_spec): Add ds_concept.
	(struct cp_declarator): Add requires_clause.
	* cxx-pretty-print.c (cxx_pretty_printer::primary_expression)
	(cxx_pretty_printer::expression): Handle REQUIRES_EXPR,
	TRAIT_EXPR, *_CONSTR.
	(pp_cxx_parameter_declaration_clause): Accept a chain of
	PARM_DECLs.
	(cxx_pretty_printer::declarator): Print requires-clause.
	(pp_cxx_template_declaration): Likewise.
	(pp_cxx_trait_expression): Handle CPTK_IS_SAME_AS.
	(pp_cxx_requires_clause, pp_cxx_requirement)
	(pp_cxx_requirement_list, pp_cxx_requirement_body)
	(pp_cxx_requires_expr, pp_cxx_simple_requirement)
	(pp_cxx_type_requirement, pp_cxx_compound_requirement)
	(pp_cxx_nested_requirement, pp_cxx_predicate_constraint)
	(pp_cxx_expression_constraint, pp_cxx_type_constraint)
	(pp_cxx_implicit_conversion_constraint)
	(pp_cxx_argument_deduction_constraint)
	(pp_cxx_exception_constraint, pp_cxx_parameterized_constraint)
	(pp_cxx_conjunction, pp_cxx_disjunction, pp_cxx_constraint): New.
	* cxx-pretty-print.h: Declare them.
	* decl.c (decls_match): Compare constraints.
	(duplicate_decls): Likewise.  Remove constraints before freeing.
	(cxx_init_decl_processing): Call init_constraint_processing.
	(cp_finish_decl): Diagnose concept without initializer.
	(grokfndecl, grokvardecl): Handle concepts and constraints.
	(grokdeclarator): Handle concept, requires-clause.
	(grokparms): No longer static.
	(xref_tag_1): Check constraints.
	(finish_function): Call check_function_concept.
	(cp_tree_node_structure): Handle CONSTRAINT_INFO.
	(check_concept_refinement, is_concept_var, check_concept_fn): New.
	* decl2.c (check_classfn): Compare constraints.
	(mark_used): Don't instantiate concepts.
	* error.c (dump_template_decl): Print constraints.
	(dump_function_decl): Likewise.
	(dump_expr): Handle REQUIRES_EXPR, *_REQ, *_CONSTR.
	* lex.c (init_reswords): Set D_CXX_CONCEPTS.
	* method.c (implicitly_declare_fn): Copy constraints from
	inherited ctor.
	* parser.h (struct cp_parser): Add in_result_type_constraint_p and
	prevent_constrained_type_specifiers fields.
	* parser.c (make_call_declarator): Add requires_clause parm.
	(cp_parser_new): Clear prevent_constrained_type_specifiers.
	(cp_parser_primary_expression): Handle RID_IS_SAME_AS, RID_REQUIRES.
	(cp_parser_postfix_expression): Set prevent_constrained_type_specifiers.
	(cp_parser_trait_expr): Handle RID_IS_SAME_AS.
	(cp_parser_declaration): Handle concept introduction.
	(cp_parser_member_declaration): Likewise.
	(cp_parser_template_parameter): Handle constrained parameter.
	(cp_parser_type_parameter): Handle constraints.
	(cp_parser_decl_specifier_seq): Handle RID_CONCEPT.
	(cp_parser_template_id): Handle partial concept id.
	(cp_parser_type_name): Add overload that takes typename_keyword_p.
	Handle constrained parameter.
	(cp_parser_nonclass_name): Handle concept names.
	(cp_parser_alias_declaration): Handle constraints.
	(cp_parser_late_return_type_opt): Also handle requires-clause.
	(cp_parser_type_id_1): Handle deduction constraint.
	(cp_parser_parameter_declaration): Handle constrained parameters.
	(cp_parser_class_specifier_1): Handle constraints.
	(cp_parser_template_declaration_after_parameters): Split out from
	cp_parser_template_declaration_after_export.
	(cp_parser_single_declaration): Handle constraints.
	(synthesize_implicit_template_parm): Handle constraints.
	(cp_parser_maybe_concept_name, cp_parser_maybe_partial_concept_id)
	(cp_parser_introduction_list, get_id_declarator)
	(get_unqualified_id, is_constrained_parameter)
	(cp_parser_check_constrained_type_parm)
	(cp_parser_constrained_type_template_parm)
	(cp_parser_constrained_template_template_parm)
	(constrained_non_type_template_parm, finish_constrained_parameter)
	(declares_constrained_type_template_parameter)
	(declares_constrained_template_template_parameter)
	(check_type_concept, cp_parser_maybe_constrained_type_specifier)
	(cp_parser_maybe_concept_name, cp_parser_maybe_partial_concept_id)
	(cp_parser_requires_clause, cp_parser_requires_clause_opt)
	(cp_parser_requires_expression)
	(cp_parser_requirement_parameter_list, cp_parser_requirement_body)
	(cp_parser_requirement_list, cp_parser_requirement)
	(cp_parser_simple_requirement, cp_parser_type_requirement)
	(cp_parser_compound_requirement, cp_parser_nested_requirement)
	(cp_parser_template_introduction)
	(cp_parser_explicit_template_declaration)
	(get_concept_from_constraint): New.
	* pt.c (local_specialization_stack): Implement.
	(maybe_new_partial_specialization): New.
	(maybe_process_partial_specialization): Use it.
	(retrieve_local_specialization, register_local_specialization)
	(template_parm_to_arg, build_template_decl, extract_fnparm_pack)
	(tsubst_expr): No longer static.
	(spec_hasher::equal): Compare constraints.
	(determine_specialization): Handle constraints.
	(check_explicit_specialization): Handle concepts.
	(process_template_parm): Handle constraints.
	(end_template_parm_list): Add overload taking no arguments.
	(process_partial_specialization): Handle concepts and constraints.
	Register partial specializations of variable templates.
	(redeclare_class_template): Handle constraints.
	(convert_template_argument): Handle WILDCARD_DECL.  Check
	is_compatible_template_arg.
	(coerce_template_parameter_pack): Handle wildcard packs.
	(coerce_template_parms): DR 1430 also applies to concepts.  Add
	overloads taking fewer parameters.
	(lookup_template_class_1): Handle constraints.
	(lookup_template_variable): Concepts are always bool.
	(finish_template_variable): Handle concepts and constraints.
	(tsubst_friend_class): Handle constraints.
	(gen_elem_of_pack_expansion_instantiation): Handle constraints.
	(tsubst_pack_expansion): Handle local parameters.
	(tsubst_decl) [FUNCTION_DECL]: Handle constraints.
	(tsubst) [TEMPLATE_TYPE_PARM]: Handle deduction constraints.
	(tsubst_copy_and_build): Handle REQUIRES_EXPR.
	(more_specialized_fn, more_specialized_partial_spec): Check constraints.
	(more_specialized_inst): Split out from most_specialized_instantiation.
	(most_specialized_partial_spec): Check constraints.
	(instantiate_decl): Never instantiate a concept.
	(value_dependent_expression_p): Handle REQUIRES_EXPR, TYPE_REQ,
	variable concepts.
	(type_dependent_expression_p): Handle WILDCARD_DECL, REQUIRES_EXPR.
	(instantiation_dependent_r): Handle REQUIRES_EXPR and concepts.
	(do_auto_deduction): Add overload taking tsubst flags and context enum.
	Handle constraints.
	(get_template_for_ordering, most_constrained_function)
	(is_compatible_template_arg, convert_wildcard_argument)
	(struct	constr_entry, struct constr_hasher, decl_constraints)
	(valid_constraints_p, get_constraints, set_constraints)
	(remove_constraints, init_constraint_processing): New.
	* ptree.c (cxx_print_xnode): Handle CONSTRAINT_INFO.
	* search.c (lookup_member): Do lookup in the open partial
	instantiation.
	* semantics.c (finish_template_template_parm): Handle constraints.
	(fixup_template_type): New.
	(finish_template_type): Call it.
	(trait_expr_value, finish_trait_expr): Handle CPTK_IS_SAME_AS.
	* tree.c (cp_tree_equal): Handle local parameters, CONSTRAINT_INFO.
	(cp_walk_subtrees): Handle REQUIRES_EXPR.
	* typeck.c (cp_build_function_call_vec): Check constraints.

Co-Authored-By: Braden Obrzut <admin@maniacsvault.net>
Co-Authored-By: Jason Merrill <jason@redhat.com>

From-SVN: r226713

2015-08-06  Yaakov Selkowitz  <yselkowi@redhat.com>

	* Makefile.def (libiconv): Define bootstrap=true.
	Mark pdf/html/info as missing.
	(configure-gcc): Depend on all-libiconv.
	(all-gcc): Ditto.
	(configure-libcpp): Ditto.
	(all-libcpp): Ditto.
	(configure-intl): Ditto.
	(all-intl): Ditto.
	* Makefile.in: Regenerate.

intl/
	* configure: Reflects renaming of configure.in to configure.ac

libcpp/
	* configure: Regenerate.

gcc/
	* configure.ac: Define LIBICONV_DEP with in-tree libiconv.
	* configure: Regenerate.

From-SVN: r226712

From-SVN: r226705

	* trans.h (gfc_trans_scalar_assign): Remove fourth argument.
	* trans-expr.c (gfc_trans_scalar_assign): Merge fourth into sixth
	argument.
	(gfc_conv_subref_array_arg, gfc_trans_subarray_assign,
	 gfc_trans_subcomponent_assign, gfc_trans_assignment_1): Update callers.
	* trans-array.c (gfc_conv_expr_descriptor): Ditto.
	* trans-stmt.c (forall_make_variable_temp,
	generate_loop_for_temp_to_lhs, generate_loop_for_rhs_to_temp,
	gfc_trans_where_assign, gfc_trans_where_3): Ditto.

From-SVN: r226700

gcc/testsuite/ChangeLog:
	* jit.dg/test-benchmark.c (main): Record all elapsed times at each
	optimization level, and print a summary at the end.

From-SVN: r226697

From-SVN: r226686

	PR c++/66533
	* parser.c (cp_parser_primary_expression): Don't skip to the end
	of the statement if we're parsing tentatively.

From-SVN: r226684

The instruction sequences for preparing argument for TLS descriptor
runtime resolver and the later function call to resolver can actually be
hoisted out of the loop.

Currently we can't because we have exposed the hard register X0 as
destination of "set".  While GCC's RTL data flow infrastructure will
skip or do very conservative assumption when hard register involved in
and thus some loop IV opportunities are missed.

This patch add another "tlsdesc_small_pseudo_<mode>" pattern, and avoid
expose x0 to gcc generic code.

Generally, we define a new register class FIXED_R0 which only contains register
0, so the instruction sequences generated from the new add pattern is the same
as tlsdesc_small_<mode>, while the operand 0 is wrapped as pseudo register that
RTL IV opt can handle it.

Ideally, we should allow operand 0 to be any pseudo register, but then
we can't model the override of x0 caused by the function call which is
hidded by the UNSPEC.

So here, we restricting operand 0 to be x0, the override of x0 can be
reflected to the gcc.

2015-08-06    Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
	      Jiong Wang  <jiong.wang@arm.com>
gcc/
  * config/aarch64/aarch64.d (tlsdesc_small_pseudo_<mode>): New pattern.
  * config/aarch64/aarch64.h (reg_class): New enumeration FIXED_REG0.
  (REG_CLASS_NAMES): Likewise.
  (REG_CLASS_CONTENTS): Likewise.
  * config/aarch64/aarch64.c (aarch64_class_max_nregs): Likewise.
  (aarch64_register_move_cost): Likewise.
  (aarch64_load_symref_appropriately): Invoke the new added pattern if
  possible.
  * config/aarch64/constraints.md (Uc0): New constraint.

gcc/testsuite/
  * gcc.target/aarch64/tlsdesc_hoist.c: New testcase.

From-SVN: r226683

2015-08-06  Jiong Wang  <jiong.wang@arm.com>

gcc/
  * config/aarch64/constraints.md (Usf): Add the test of
  aarch64_is_noplt_call_p.

gcc/testsuite/
  * gcc.target/aarch64/noplt_3.c: New testcase.

From-SVN: r226682

2015-08-06  Jiong Wang  <jiong.wang@arm.com>

gcc/
  * config/aarch64/aarch64-protos.h (aarch64_is_noplt_call_p): New declaration.
  * config/aarch64/aarch64.c (aarch64_is_noplt_call_p): New function.
  * config/aarch64/aarch64.md (call_value_symbol): Check noplt scenarios.
  (call_symbol): Likewise.

gcc/testsuite/
  * gcc.target/aarch64/noplt_1.c: New testcase.
  * gcc.target/aarch64/noplt_2.c: Likewise.

From-SVN: r226681

re PR c++/67130 (ICE: tree check: expected identifier_node, have template_decl in write_unqualified_id, at cp/mangle.c:1218)

	PR c++/67130
	PR c++/67131
	PR c++/66260
	* mangle.c (write_expression) [TEMPLATE_ID_EXPR]: Handle variable
	templates.
	* pt.c (tsubst_copy_and_build): Check for argument substitution
	failure.

From-SVN: r226676

Vectorize mult expressions with power 2 constants via shift, for targets has no vector multiplication support.

 
2015-08-06  Venkataramanan Kumar  <Venkataramanan.kumar@amd.com>

	* tree-vect-patterns.c (vect_recog_mult_pattern): New function
	for vectorizing multiplication patterns.
	* tree-vectorizer.h: Adjust the number of patterns.

2015-08-06  Venkataramanan Kumar  <Venkataramanan.kumar@amd.com>

	* gcc.dg/vect/vect-mult-pattern-1.c: New test.
	* gcc.dg/vect/vect-mult-pattern-2.c: New test.

From-SVN: r226675

	* config/i386/sse.md (*vec_concatv2df): Declare added
	alternatives as sselog type.

From-SVN: r226674

gcc/ChangeLog:
	    * config/s390/s390.c (s390_dwarf_frame_reg_mode): Return Pmode for
	    all GPRs.

gcc/testsuite/ChangeLog:
	    * gcc.target/s390/dwarfregtable-1.c: New test.
	    * gcc.target/s390/dwarfregtable-2.c: New test.
	    * gcc.target/s390/dwarfregtable-3.c: New test.

From-SVN: r226673

gcc/ChangeLog:
	    * config/s390/s390.c (s390_expand_tbegin): Expand either
	    tbegin_1_z13 or tbegin_1 depending on VX flag.
	    * config/s390/s390.md ("tbegin_1_z13"): New expander.

gcc/testsuite/ChangeLog:
	    * gcc.target/s390/htm-builtins-z13-1.c: New test.

From-SVN: r226672

gcc/ChangeLog:
	    * config/s390/s390.opt: Clarify description for -mzvector
	    * doc/invoke.texi: Add documentation for -mhtm, -mvx, and
	    -mzvector.

From-SVN: r226671

re PR fortran/64022 ([F2003][IEEE] ieee_support_flag does not handle kind=10 and kind=16 REAL variables)

	PR fortran/64022
	* gfortran.dg/ieee/large_2.f90: New test.
	* gfortran.dg/ieee/large_3.F90: New test.

From-SVN: r226670

2015-08-06  Richard Biener  <rguenther@suse.de>

	* gimple.h (gimple_call_set_fn): Access op member directly.
	(gimple_call_chain_ptr): Likewise.
	(gimple_call_set_chain): Likewise.
	(gimple_cond_lhs_ptr): Likewise.
	(gimple_cond_set_lhs): Likewise.
	(gimple_cond_rhs_ptr): Likewise.
	(gimple_cond_set_rhs): Likewise.
	(gimple_cond_true_label): Likewise.
	(gimple_cond_set_true_label): Likewise.
	(gimple_cond_set_false_label): Likewise.
	(gimple_cond_false_label): Likewise.
	(gimple_label_label): Likewise.
	(gimple_label_set_label): Likewise.
	(gimple_goto_set_dest): Likewise.
	(gimple_asm_input_op): Likewise.
	(gimple_asm_input_op_ptr): Likewise.
	(gimple_asm_set_input_op): Likewise.
	(gimple_asm_output_op): Likewise.
	(gimple_asm_output_op_ptr): Likewise.
	(gimple_asm_set_output_op): Likewise.
	(gimple_asm_clobber_op): Likewise.
	(gimple_asm_set_clobber_op): Likewise.
	(gimple_asm_label_op): Likewise.
	(gimple_asm_set_label_op): Likewise.
	(gimple_switch_index): Likewise.
	(gimple_switch_index_ptr): Likewise.
	(gimple_return_retval_ptr): Likewise.
	(gimple_return_retval): Likewise.
	(gimple_return_set_retval): Likewise.
	(gimple_switch_set_index): Likewise.  Remove superfluous GIMPLE_CHECK.
	(gimple_switch_label): Likewise.
	(gimple_switch_set_label): Likewise.

From-SVN: r226669

gimple-fold.c (gimple_fold_stmt_to_constant_1): Simplify bool comparison canonicalization and restrict to integers.

2015-08-06  Richard Biener  <rguenther@suse.de>

	* gimple-fold.c (gimple_fold_stmt_to_constant_1): Simplify
	bool comparison canonicalization and restrict to integers.

From-SVN: r226668

re PR fortran/64022 ([F2003][IEEE] ieee_support_flag does not handle kind=10 and kind=16 REAL variables)

	PR fortran/64022
	* gfortran.dg/ieee/large_1.f90: Adjust test.

From-SVN: r226665

	* pt.c (determine_specialization): Print candidates after 'no
	match' error.

From-SVN: r226653

	* decl.c (cp_finish_decl): Tidy.
	* typeck.c (finish_class_member_access_expr): Use
	type_dependent_expression_p.
	* semantics.c (finish_id_expression): Use
	type_dependent_expression_p.  Don't build_qualified_name for a
	decl in non-dependent scope.
	* pt.c (type_dependent_expression_p): A TEMPLATE_ID_EXPR of an
	identifier is dependent.  Remove variable_template_p check.

From-SVN: r226652

From-SVN: r226651

2015-08-05  Andrew MacLeod  <amacleod@redhat.com>

	* coretypes.h (enum symbol_visibility): Relocate here.
	* flag-types.h (enum symbol_visibility): Remove.
	* tree-core.h (enum symbol_visibility): Remove.

From-SVN: r226648

2015-08-05  Nikolai Bozhenov  <n.bozhenov@samsung.com>

	* testsuite/20_util/enable_shared_from_this/cons/constexpr.cc: Remove
	redundant -save-temps option.
	* testsuite/20_util/shared_ptr/cons/constexpr.cc: Likewise.
	* testsuite/20_util/unique_ptr/cons/constexpr.cc: Likewise.
	* testsuite/20_util/weak_ptr/cons/constexpr.cc: Likewise.
	* testsuite/30_threads/future/cons/constexpr.cc: Likewise.
	* testsuite/30_threads/shared_future/cons/constexpr.cc: Likewise.

From-SVN: r226647

2015-08-15 Lynn Boger <laboger@linux.vnet.ibm.com>

	PR target/66870
	* gcc/config/rs6000/rs6000.c (rs6000_emit_prologue): Check
	for no_split_stack function attribute along with
	flag_split_stack.
	(rs6000_expand_split_stack_prologue): Likewise.

From-SVN: r226643

re PR c++/66260 ([C++14] Failure to compile variable template with recursively defined partial specialization)

	PR c++/66260
	PR c++/66596
	PR c++/66649
	PR c++/66923
	* pt.c (lookup_template_variable): Use NULL_TREE for type.
	(instantiate_template_1): Also set DECL_TI_ARGS based on
	the immediate parent.
	(tsubst_copy_and_build) [TEMPLATE_ID_EXPR]: Handle variable templates.
	(finish_template_variable): Add complain parm.
	* cp-tree.h: Adjust.

From-SVN: r226642

	PR c++/65195
	PR c++/66619
	* semantics.c (finish_id_expression): Call convert_from_reference
	for variable template.

From-SVN: r226641

gcc/ChangeLog:

2015-08-05  Manuel López-Ibáñez  <manu@gcc.gnu.org>
	    Jeff Law  <law@redhat.com>

	PR c/16351
	* doc/invoke.texi (Wnull-dereference): New.
	* tree-vrp.c (infer_value_range): Update call to infer_nonnull_range.
	* gimple-ssa-isolate-paths.c (find_implicit_erroneous_behaviour):
	Warn for potential NULL dereferences.
	(find_explicit_erroneous_behaviour): Warn for NULL dereferences.
	* ubsan.c (instrument_nonnull_arg): Call
	infer_nonnull_range_by_attribute.
	(instrument_nonnull_return): Likewise.
	* common.opt (Wnull-dereference); New.
	* gimple.c (infer_nonnull_range): Remove bool arguments.
	(infer_nonnull_range_by_dereference): New.
	(infer_nonnull_range_by_attribute): New.
	* gimple.h: Update declarations.

gcc/testsuite/ChangeLog:

2015-08-05  Manuel López-Ibáñez  <manu@gcc.gnu.org>
	    Jeff Law  <law@redhat.com>

	PR c/16351
	* gcc.dg/tree-ssa/isolate-2.c: Close comment.
	* gcc.dg/tree-ssa/isolate-4.c: Likewise.
	* gcc.dg/tree-ssa/wnull-dereference.c: New test.
	* gcc.dg/tree-ssa/isolate-1.c: Test warnings with -Wnull-dereference.
	* gcc.dg/tree-ssa/isolate-3.c: Likewise.
	* gcc.dg/tree-ssa/isolate-5.c: Likewise.



Co-Authored-By: Jeff Law <law@redhat.com>

From-SVN: r226640

gcc/
	* gensupport.c (sequence_num): Replace with...
	(insn_sequence_num, split_sequence_num, peephole2_sequence_num):
	...these new variables.
	(init_rtx_reader_args_cb): Update accordingly.
	(get_num_code_insns): Likewise.
	(read_md_rtx): Rework to use a while loop and get_c_test.
	Use the new counters.  Remove redundant DEFINE_SUBST case.
	* genoutput.c (gen_split): Delete.
	(main): Don't call it.

From-SVN: r226635

gcc/
	* gensupport.h (get_c_test): Declare.
	* gensupport.c (get_c_test): New function.
	* genconditions.c (main): Use it.
	* genrecog.c (validate_pattern): Likewise.
	(match_pattern_1): Likewise.  Remove c_test argument.
	(match_pattern): Update accordingly and remove c_test argument.
	(main): Update accordingly.

From-SVN: r226634

gcc/
	* gensupport.h (get_num_insn_codes): Declare.
	* gensupport.c (get_num_insn_codes): New function.
	* genattrtab.c (optimize_attrs): Rename max_insn_code to
	num_insn_codes.
	(main): Likewise.  Use get_num_insn_codes.
	* gencodes.c (main): Remove "last" and use get_num_insn_codes.

From-SVN: r226633

gcc/
	PR middle-end/66311
	* wide-int.cc (wi::from_mpz): Make sure that absolute mpz value
	is zero- rather than sign-extended.

gcc/testsuite/
2015-08-05  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>

	PR middle-end/66311
	* gfortran.dg/pr66311.f90: New file.

From-SVN: r226632

gcc/
	* target-insns.def (can_extend): Delete.

From-SVN: r226631

2015-08-05  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/67121
	* tree-if-conv.c (combine_blocks): Clear range-info produced
	by stmts no longer executed conditionally.

	* gcc.dg/torture/pr67121.c: New testcase.

From-SVN: r226630

	to allow identical far pointers to remain.


tests	* gcc.target/rl78: New directory.
        * gcc.target/rl78/rl78.exp: New file: Test driver.
        * gcc.target/rl78/test_addm3.c: New file: Test adds.

From-SVN: r226624