PR rtl-optimization/65980
	* jump.c (rtx_renumbered_equal_p) <case LABEL_REF>: Use
	next_nonnote_nondebug_insn instead of next_real_insn and
	skip over CODE_LABELs too.

	* gcc.dg/pr65980.c: New test.

From-SVN: r231672

	PR lto/68878
	* lto-symtab.c (lto_symtab_prevailing_virtual_decl): New function.
	* lto-symtab.h (lto_symtab_prevailing_virtual_decl): Declare.
	(lto_symtab_prevailing_decl): Use it.

From-SVN: r231671

	* symtab.c (symtab_node::fixup_same_cpp_alias_visibility):
	Do not copy DECL_VIRTUAL_P.

From-SVN: r231670

From-SVN: r231668

gcc/testsuite/ChangeLog:
2015-12-15  Martin Sebor  <msebor@redhat.com>

	c++/42121
	c++/68478
	c++/68613
	c++/68689
	c++/68710
	* g++.dg/compat/struct-layout-1_generate.c: Avoid generating
	further fields after the first flexible array member.
	* g++.dg/ext/flexary2.C: Expect a sole flexible array member
	to be rejected.  Add a test case exercising zero-length array.
	* g++.dg/ext/flexary3.C: Expect a sole flexible array member
	to be rejected.
	* g++.dg/ext/flexary.h: New file.
	* g++.dg/ext/flexary4.C: New file.
	* g++.dg/ext/flexary5.C: New file.
	* g++.dg/ext/flexary6.C: New file.
	* g++.dg/ext/flexary7.C: New file.
	* g++.dg/ext/flexary8.C: New file.
	* g++.dg/other/dump-ada-spec-2.C: Adjust to reflect flexible
	array members.
	* g++.dg/parse/pr43765.C: Add a member to make a struct with
	a flexible array member valid.  Adjust expected error message.
	* g++.dg/torture/pr64280.C: Expect a sole flexible array member
	to be rejected.
	* g++.dg/torture/pr64312.C: Add a member to make a struct with
	a flexible array member valid.
	* g++.dg/ubsan/object-size-1.C: Adjust expected diagnostic.

gcc/cp/ChangeLog:
2015-12-15  Martin Sebor  <msebor@redhat.com>

	c++/42121
	c++/68478
	c++/68613
	c++/68689
	c++/68710
	* class.c (walk_subobject_offsets): Avoid assuming type domain
	is non-null or has an upper bound.
	(layout_class_type): Include type size in error message.
	(flexmems_t): New type.
	(field_nonempty_p, find_flexarrays, diagnose_flexarrays)
	(check_flexarrays): New	functions.
	(finish_struct_1): Call check_flexarrays.
	* decl.c (compute_array_index_type): Distinguish flexible array
	members from zero-length arrays.
	(grokdeclarator): Reject flexible array members in unions.  Avoid
	rejecting members of incomplete types that are flexible array members.
	* error.c (dump_type_suffix): Handle flexible array members with null
	upper bound.
	* init.c (perform_member_init): Same.
	* pt.c (instantiate_class_template_1): Allow flexible array members.
	(tsubst): Handle flexible array members with null upper bound.
	* typeck2.c (digest_init_r): Warn for initialization of flexible
	array members.
	(process_init_constructor_record): Handle flexible array members.

gcc/ChangeLog:
2015-12-15  Martin Sebor  <msebor@redhat.com>

	c++/42121
	* tree-chkp.c (chkp_find_bound_slots_1): Handle flexible array
	members.
	* tree.c (type_contains_placeholder_1): Avoid assuming type has
	a non-null domain or an upper bound to handle flexible array
	members.
	* varasm.c (output_constructor_regular_field):  Same.
	(output_constructor): Set min_index to integer_zero_node rather
	than null when a type has no domain to avoid crashing later.

From-SVN: r231665

	* config/nvptx/nvptx.c (write_one_arg): Rename to ...
	(write_arg_mode): ... here.  Update callers.
	(write_arg): Rename to ...
	(write__arg_type): ... here.  Update callers.
	(write_return_mode): New fn, broken out of ...
	(write_return): ... here.  Rename to ...
	(write_return_type): ... here.  Call it. Update callers.
	(write_fn_proto_from_insn): Use write_arg_mode and
	write_return_mode.
	(init_frame): New fn.
	(nvptx_declare_function_name): Call it for frame and varargs. Only
	emit outgoing static chain, if it's live.
	(nvptx_output_return): Use reg_names for return reg name.
	(nvptx_output_call_insn): Likewise.
	(nvptx_reorg): Mark unused hard regs too.

From-SVN: r231663

	* include/std/functional (_Mu<_Arg, false, false>::operator()): Restore
	accidentally-removed volatile qualifier.

From-SVN: r231660

	* config/nvptx/nvptx.md (nvptx_register_operand): Don't accept and
	then reject subregs.
	(nvptx_reg_or_mem_operand): Likewise.
	(nvptx_nonmemory_operand): Likewise.
	(call_insn_operand): A regular predicate, check	SYMBOL_REF_FUNCTION_P.
	(call_insn, call_value_insn): Address is not SImode.
	* config/nvptx/nvptx.h (FIXED_REGISTERS): Make return reg fixed.
	(enum reg_class, REG_CLASS_NAMES, REG_CLASS_CONTENTS): Remove
	RETURN_REG class.
	(REGNO_REG_CLASS): Alwaus ALL_REGS.
	(PROMOTE_MODE): QI and HI are the only smaller than SI int modes.
	(HARD_FRAME_POINTER_REGNUM): Delete.
	(REGISTER_NAMES): Move earlier.
	(struct nvptx_args): Remove 'off'.
	(INIT_CUMULATIVE_ARGS): Don't initialize 'off'.
	(ELIMINABLE_REGS): Remove HARD_FRAME_POINTER_REGNUM.
	* config/nvptx/nvptx.c (arg_promotion): Delete.
	(nvptx_expand_call): Remove check for funtype being an fntype.

From-SVN: r231659

From-SVN: r231658

From-SVN: r231657

re PR c/68907 (bogus warning: right-hand operand of comma expression has no effect on an atomic_int preincrement)

	PR c/68907
	* c-typeck.c (build_atomic_assign): Set TREE_NO_WARNING on an
	artificial decl.

	* gcc.dg/pr68907.c: New test.

From-SVN: r231656

gcc/c-family/
	* c-common.c (c_common_attribute_table): Handle "omp declare target
	link" attribute.
gcc/
	* cgraphunit.c (output_in_order): Do not assemble "omp declare target
	link" variables in ACCEL_COMPILER.
	* gimplify.c (gimplify_adjust_omp_clauses): Do not remove mapping of
	"omp declare target link" variables.
	* omp-low.c (scan_sharing_clauses): Do not remove mapping of "omp
	declare target link" variables.
	(add_decls_addresses_to_decl_constructor): For "omp declare target link"
	variables output address of the artificial pointer instead of address of
	the variable.  Set most significant bit of the size to mark them.
	(pass_data_omp_target_link): New pass_data.
	(pass_omp_target_link): New class.
	(find_link_var_op): New static function.
	(make_pass_omp_target_link): New function.
	* passes.def: Add pass_omp_target_link.
	* tree-pass.h (make_pass_omp_target_link): Declare.
	* varpool.c (symbol_table::output_variables): Do not assemble "omp
	declare target link" variables in ACCEL_COMPILER.
gcc/lto/
	* lto.c: Include stringpool.h and fold-const.h.
	(offload_handle_link_vars): New static function.
	(lto_main): Call offload_handle_link_vars.
libgomp/
	* libgomp.h (REFCOUNT_LINK): Define.
	(struct splay_tree_key_s): Add link_key.
	* target.c (gomp_map_vars): Treat REFCOUNT_LINK objects as not mapped.
	Replace target address of the pointer with target address of newly
	mapped object in the splay tree.  Set link pointer on target to the
	device address of the mapped object.
	(gomp_unmap_vars): Restore target address of the pointer in the splay
	tree for REFCOUNT_LINK objects after unmapping.
	(gomp_load_image_to_device): Set refcount to REFCOUNT_LINK for "omp
	declare target link" objects.
	(gomp_unload_image_from_device): Replace j with i.  Force unmap of all
	"omp declare target link" objects, which were mapped for the image.
	(gomp_exit_data): Restore target address of the pointer in the splay
	tree for REFCOUNT_LINK objects after unmapping.
	* testsuite/libgomp.c/target-link-1.c: New file.

From-SVN: r231655

re PR middle-end/21273 (gensupport.c:collect_insn_data doesn't consider the constraints of match_scratch)

Fix PR21273

	PR middle-end/21273
	* gensupport.c (collect_insn_data): Look for number of alternatives
	in MATCH_SCRATCH.

From-SVN: r231654

	* include/std/functional (is_placeholder, is_bind_expression): Update
	comments.
	(_Safe_tuple_element): Replace with _Safe_tuple_element_t alias
	template.
	(_Mu): Remove vestigial TR1 return types and update coments.

From-SVN: r231653

	PR libstdc++/68912
	* include/std/functional (_Bind::operator()): Use lvalue functor to
	deduce return type.
	* testsuite/20_util/bind/68912.cc: New.

From-SVN: r231652

	* config/nvptx/nvptx.h (HARD_REGNO_NREGS): Reformat.
	(CANNOT_CHANGE_MODE_CLASS): Always return true.
	(HARD_REGNO_MODE_OK): Reformat.
	* config/nvptx/nvptx.md (define_expand mov<mode>): No
	RETURN_REGNUM handling here.
	* config/nvptx/nvptx.c (nvptx_function_value): Set ret_reg_mode
	here.
	(write_one_arg): No QI or HI mode args.
	(write_fn_proto_from_insn): No argument promotion here.
	(nvptx_output_return_insn): No return promotion here.
	(nvptx_output_mov_insn): No RETURN_REGNUM handling needed.
	(nvptx_output_call_insn): No return promotion here.

From-SVN: r231651

From-SVN: r231649

2015-12-15  Martin Jambor  <mjambor@suse.cz>

	PR ipa/68851
	* cgraph.c (collect_callers_of_node_1): Do not collect thunks.
	* cgraph.h (cgraph_node): Change comment of collect_callers.

testsuite/
	* g++.dg/ipa/pr68851.C: New test.

From-SVN: r231648

From-SVN: r231647

2015-12-15  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/63506
	* g++.dg/cpp0x/pr63506-1.C: New.
	* g++.dg/cpp0x/pr63506-2.C: Likewise.

From-SVN: r231646

testsuite/
        * gcc.target/visium/block_move.c: Skip for -mcpu=gr5.

From-SVN: r231645

	PR tree-optimization/66688
	* tree-cfgcleanup.c (cleanup_control_flow_bb): Handle
	noreturn call followed only by debug stmts by removing
	the debug stmts and handling it the same as if the noreturn
	call is the last stmt.

	* gcc.dg/pr66688.c: New test.

From-SVN: r231644

	PR libstdc++/68863
	* include/bits/regex_executor.tcc (_Executor::_M_lookahead):
	Copy the captured content for lookahead, so that the backreferences
	inside can refer to them.
	* testsuite/28_regex/algorithms/regex_match/ecma/char/68863.cc:
	New testcase.

From-SVN: r231641

gcc/cp/ChangeLog:

	PR c++/21802
	PR c++/53223
	* cp-tree.h (cp_tree_code_length): Declare.
	(build_min_non_dep_op_overload): Declare.
	* tree.c (cp_tree_code_length): Define.
	(build_min_non_dep_op_overload): Define.
	(build_win_non_dep_call_vec): Copy the KOENIG_LOOKUP_P flag.
	* typeck.c (build_x_indirect_ref): Use
	build_min_non_dep_op_overload when the given expression
	has been resolved to an operator overload.
	(build_x_binary_op): Likewise.
	(build_x_array_ref): Likewise.
	(build_x_unary_op): Likewise.
	(build_x_compound_expr): Likewise.
	(build_x_modify_expr): Likewise.
	* decl2.c (grok_array_decl): Likewise.
	* call.c (build_new_op_1): If during template processing we
	chose an operator overload that is a hidden friend function, set
	the call's KOENIG_LOOKUP_P flag to 1.

gcc/testsuite/ChangeLog:

	PR c++/21802
	PR c++/53223
	* g++.dg/cpp0x/pr53223.C: New test.
	* g++.dg/lookup/pr21802.C: New test.
	* g++.dg/lookup/two-stage4.C: Remove XFAIL.

From-SVN: r231640

2015-12-14  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/pr68867
	* io/write.c (set_fnode_default): For kind=16, set the decimal precision
	depending on the platform binary precision, 106 or 113.

From-SVN: r231639

From-SVN: r231638

2015-12-14  Steve Ellcey  <sellcey@imgtec.com>

	* gcc.dg/tree-ssa/ssa-fre-4.c: Remove mips*-*-* target.
	* gcc.target/mips/ext-2.c: Update scan checks.

From-SVN: r231635

2015-12-14  Steve Ellcey  <sellcey@imgtec.com>

	* config/mips/mips.c (mips_promote_function_mode): New function.
	(TARGET_PROMOTE_FUNCTION_MODE): Define as above function.
	(TARGET_PROMOTE_PROTOTYPES): Remove.

From-SVN: r231634

	PR c++/68309
gcc/
	* hash-table.h: Add copy constructor.
	* hash-map.h: Add copy constructor.
gcc/cp/
	* pt.c (instantiate_decl): Copy local_specializations for nested
	function.

From-SVN: r231632

2014-12-14  Tobias Burnus  <burnus@net-b.de>

        PR fortran/68850
        * gfortran.texi (Standards): Mention TS 18508.
        (Fortran 2003 and 2008 Status): Add section on TS 18508 status.
        * intrinsic.texi (EVENT_QUERY): Add.

From-SVN: r231631

2015-12-14  Tom de Vries  <tom@codesourcery.com>

	PR other/68882
	* gimple-pretty-print.c (dump_ssaname_info_to_file): New function.
	* gimple-pretty-print.h (dump_ssaname_info_to_file): Declare.
	* tree-cfg.c (dump_default_def): New function.
	(dump_function_to_file): Dump default defs for arguments, static chain,
	and decl-by-reference.

From-SVN: r231630

	gcc/
	* config/nvptx/nvptx.h (PARM_BOUNDARY): Set to 32.
	* config/nvptx/nvptx.c (PASS_IN_REG_P, RETURN_IN_REG_P): Delete.
	(pass_in_memory, promote_arg, promote_return): New.
	(nvptx_function_arg_boundary): Delete.
	(nvptx_function_value): Use promote_return.
	(nvptx_pass_by_reference): Use pass_in_memory.
	(nvptx_return_in_memory): Use pass_in_memory.
	(nvptx_promote_function_mode): Use promote_arg.
	(write_arg): Adjust arg splitting logic.
	(write_return): Check and clear ret_reg_mode, if needed.
	(write_fn_proto, nvptx_declare_function_name): Adust write_return
	calls.
	(TARGET_RUNCTION_ARG_BOUNDARY,
	TARGET_FUNCTION_ARG_ROUND_BOUNDARY): Don't override.

	gcc/testsuite/
	* g++.dg/abi/nvptx-nrv1.C: New.
	* g++.dg/abi/nvptx-ptrmem1.C: New.
	* gcc.target/nvptx/abi-complex-arg.c: New.
	* gcc.target/nvptx/abi-complex-ret.c: New.
	* gcc.target/nvptx/abi-enum-arg.c: New.
	* gcc.target/nvptx/abi-enum-ret.c: New.
	* gcc.target/nvptx/abi-knr-arg.c: New.
	* gcc.target/nvptx/abi-knr-ret.c: New.
	* gcc.target/nvptx/abi-scalar-arg.c: New.
	* gcc.target/nvptx/abi-scalar-ret.c: New.
	* gcc.target/nvptx/abi-struct-arg.c: New.
	* gcc.target/nvptx/abi-struct-ret.c: New.
	* gcc.target/nvptx/abi-vararg-1.c: New.
	* gcc.target/nvptx/abi-vararg-2.c: New.
	* gcc.target/nvptx/abi-vect-arg.c: New.
	* gcc.target/nvptx/abi-vect-ret.c: New.

From-SVN: r231628

	PR c/68833
	* common.opt (Wmissing-noreturn): Add Warning option.
	* opts-common.c (control_warning_option): If opt is
	alias_target with alias_arg, set arg to it.

	* c.opt (Wmissing-format-attribute, Wnormalized): Add Warning option.

	* c-c++-common/pr68833-1.c: New test.
	* c-c++-common/pr68833-2.c: New test.

From-SVN: r231624

libgomp/
	* libgomp.h (gomp_device_state): New enum.
	(struct gomp_device_descr): Replace is_initialized with state.
	(gomp_fini_device): Remove declaration.
	* oacc-host.c (host_dispatch): Use state instead of is_initialized.
	* oacc-init.c (acc_init_1): Use state instead of is_initialized.
	(acc_shutdown_1): Likewise.  Inline gomp_fini_device.
	(acc_set_device_type): Use state instead of is_initialized.
	(acc_set_device_num): Likewise.
	* target.c (resolve_device): Use state instead of is_initialized.
	Do not initialize finalized device.
	(gomp_map_vars): Do nothing if device is finalized.
	(gomp_unmap_vars): Likewise.
	(gomp_update): Likewise.
	(GOMP_offload_register_ver): Use state instead of is_initialized.
	(GOMP_offload_unregister_ver): Likewise.
	(gomp_init_device): Likewise.
	(gomp_unload_device): Likewise.
	(gomp_fini_device): Remove.
	(gomp_get_target_fn_addr): Do nothing if device is finalized.
	(GOMP_target): Go to host fallback if device is finalized.
	(GOMP_target_ext): Likewise.
	(gomp_exit_data): Do nothing if device is finalized.
	(gomp_target_task_fn): Go to host fallback if device is finalized.
	(gomp_target_fini): New static function.
	(gomp_target_init): Use state instead of is_initialized.
	Call gomp_target_fini at exit.
liboffloadmic/
	* plugin/libgomp-plugin-intelmic.cpp (unregister_main_image): Remove.
	(register_main_image): Do not call unregister_main_image at exit.
	(GOMP_OFFLOAD_fini_device): Allow for OpenMP.  Unregister main image.

From-SVN: r231623

convert_move does not know how to zero-extend a constant integer to the
target mode -- simply because it does not know the source mode.  As a
result, 32-bit SImode with the high bit set would be effectively sign-
extended instead of zero-extended.

This patch fixes it.


	PR target/68865
	PR target/68879
	* config/rs6000/rs6000.md (cstore_si_as_di): Force all operands
	into registers.

From-SVN: r231621

re PR tree-optimization/68707 (testcase gcc.dg/vect/O3-pr36098.c vectorized using VEC_PERM_EXPR rather than VEC_LOAD_LANES)

2015-12-10  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/68707
	PR tree-optimization/67323
	* tree-vect-slp.c (vect_analyze_slp_instance): Drop SLP instances
	if they can be vectorized using load/store-lane instructions.

From-SVN: r231620

2015-12-14  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/68852
	* tree-vectorizer.h (struct _slp_tree): Add def_type member.
	(SLP_TREE_DEF_TYPE): New accessor.
	* tree-vect-stmts.c (vect_is_simple_use): Remove BB vectorization
	hack.
	* tree-vect-slp.c (vect_create_new_slp_node): Initialize
	SLP_TREE_DEF_TYPE.
	(vect_build_slp_tree): When a node is to be built up from scalars
	do not push a NULL as child but instead set its def_type to
	vect_external_def.
	(vect_analyze_slp_cost_1): Check for child def-type instead
	of NULL.
	(vect_detect_hybrid_slp_stmts): Likewise.
	(vect_bb_slp_scalar_cost): Likewise.
	(vect_get_slp_defs): Likewise.
	(vect_slp_analyze_node_operations): Likewise.  Before
	processing node push the children def-types to the underlying
	stmts vinfo and restore it afterwards.
	(vect_schedule_slp_instance): Likewise.
	(vect_slp_analyze_bb_1): Do not mark stmts not in SLP instances
	as not vectorizable.

	* g++.dg/torture/pr68852.C: New testcase.

From-SVN: r231619

re PR tree-optimization/68775 (spec2006 test case 465.tonto fails with the gcc 6.0 fortran compiler)

2015-12-14  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/68775
	* tree-vect-slp.c (vect_build_slp_tree): Make sure to apply
	a operand swapping even if replacing the op with scalars.

From-SVN: r231617

	* combine.c (change_zero_ext): Do not create a shift of zero length.

From-SVN: r231613

From-SVN: r231612