* config.host: Add *-*-msdosdjgpp to lists of i[34567]86-*-*
	soft-fp targets

From-SVN: r231803

	* configure.ac: Specify that DJGPP do not have mmap even when sys/mman.h exists
	* configure: Regenerate

From-SVN: r231802

       * config/os/djgpp/error_constants.h: update according to DJGPP errno
       macros.

From-SVN: r231801

	* passes.def: Put the split-paths pass immediately before the
	tracer pass.

From-SVN: r231800

gcc/cp/ChangeLog:

	PR c++/68831
	* init.c (build_delete): Use a warning sentinel to disable
	-Waddress warnings when building the conditional that tests
	if the operand is NULL.

gcc/testsuite/ChangeLog:

	PR c++/68831
	* g++.dg/pr68831.C: New test.

From-SVN: r231798

    
    This change updates mksysinfo.sh so it correctly
    includes the define NLA_HDRLEN in the syscall package.
    
    Fixes golang/go/#13629
    
    Reviewed-on: https://go-review.googlesource.com/17893

From-SVN: r231796

2015-12-17  Jan-Benedict Glaw  <jbglaw@lug-owl.de>

	* config-list.mk (LIST): Add --enable-obsolete to recently obsoleted
	targets x86_64-knetbsd-gnu, i686-knetbsd-gnu and i686-openbsd3.0 .

From-SVN: r231794

From-SVN: r231793

	* doc/invoke.texi (-O2 options): Remove -fsplit-paths.
	(-O3 options): Add -fsplit-paths.
	* gimple-ssa-split-paths.c: Include predict.h
	(split_paths): Only split paths in a loop that should be
	optimized for speed.
	* opts.c (default_options_table): Move -fsplit-paths from -O2 to
	-O3.

	* gcc.dg/tree-ssa/split-path-1.c: Explicitly ask for path
	splitting optimizations.

From-SVN: r231790

	gcc/
	* ipa-icf.c (sem_item_optimizer::merge): Don't pick 'main' as the
	source function.

	gcc/testsuite/
	* gcc.dg/ipa/ipa-icf-merge-1.c: New.

From-SVN: r231787

gcc/c/ChangeLog:
	* c-parser.c (c_parser_statement_after_labels): When calling
	c_finish_return, Use the return expression's location if it has
	one, falling back to the location of the first token within it.
	* c-typeck.c (c_finish_return): When issuing warnings about
	the incorrect presence/absence of a return value, issue a note
	showing the declaration of the function.

gcc/testsuite/ChangeLog:
	* gcc.dg/diagnostic-range-bad-return.c: New test case.

From-SVN: r231786

From-SVN: r231784

	* graphite-dependences.c: Move all isl include files to...
	* graphite-isl-ast-to-gimple.c: Same.
	* graphite-optimize-isl.c: Same.
	* graphite-poly.c: Same.
	* graphite-scop-detection.c: Same.
	* graphite.c: Same.
	* graphite.h: ... here.

From-SVN: r231783

        * config/avr/avr.h (MOVE_MAX): Set value to 1.
        (MOVE_MAX_PIECES): Define.
        (MOVE_RATIO): Define.
        * config/avr/avr.c (TARGET_USE_BY_PIECES_INFRASTRUCTURE_P):
        Provide target hook.
        (avr_use_by_pieces_infrastructure_p): New function.

From-SVN: r231782

re PR c++/67550 (Initialization of local struct array with elements of global array yields zeros instead of initializer values)

	PR c++/67550

	* init.c (constant_value_1): Don't return a CONSTRUCTOR missing
	non-constant elements.

From-SVN: r231777

	PR c++/67576

	PR c++/25466
	* rtti.c (build_typeid): Use save_expr, not stabilize_reference.

From-SVN: r231776

2015-12-17  Andris Pavenis  <andris.pavenis@iki.fi>

        * MAINTAINERS (Write After Approval): Add Myself.

From-SVN: r231775

gcc/ChangeLog:

2015-12-17  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>

	* config.gcc: mark *-interix* as obsolete.

From-SVN: r231774

gcc/ChangeLog:

2015-12-17  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>

	* config.gcc: Mark openbsd 2.0 and 3.X as obsolete.

From-SVN: r231773

gcc/ChangeLog:

2015-12-17  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>

	* config.gcc: Mark knetbsd targets as obsolete.

From-SVN: r231772

	* config/nvptx/nvptx.h (NVPTX_RETURN_REGNUM, FRAME_POINTER_REGNUM,
	ARG_POINTER_REGNUM, STATIC_CHAIN_REGNUM): Renumber.
	(REGISTER_NAMES): Update and rename.
	(FIXED_REGISTERS, CALL_USED_REGISTERS): Update.
	(enum_reg_class, REG_CLASS_NAMES, REG_CLASS_CONTENTS): Reformat.

From-SVN: r231771

re PR tree-optimization/68946 (ICE at -O3 on x86_64-linux-gnu in both 32- and 64-bit modes (in vect_analyze_stmt, at tree-vect-stmts.c:8013))

2015-12-17  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/68946
	* tree-vect-slp.c (vect_slp_analyze_node_operations): Push
	SLP def type to stmt operands one stmt at a time.

	* gcc.dg/torture/pr68946.c: New testcase.

From-SVN: r231770

	* c-c++-common/Wunused-var-13.c: Requires label values.
	* gcc.dg/torture/pr46216.c: Likewise.

From-SVN: r231769

gcc/ada/ChangeLog:

	* gcc-interface/ada-tree.h
	(TYPE_IMPLEMENTS_PACKED_ARRAY_P, TYPE_CAN_HAVE_DEBUG_TYPE_P,
	TYPE_ORIGINAL_PACKED_ARRAY, SET_TYPE_ORIGINAL_PACKED_ARRAY): New
	macros.
	* gcc-interface/decl.c (add_parallel_type_for_packed_array):
	Rename to associate_original_type_to_packed_array.  When
	-fgnat-encodings=minimal, set original packed array type as so
	instead of as a parallel type to the implementation type.  In
	this case, also rename the implementation type to the name of
	the original array type.
	(gnat_to_gnu_entity): Update invocations to
	add_parallel_type_for_packed_array.  Tag ARRAY_TYPE nodes for
	packed arrays with the TYPE_PACKED flag.
	When -fgnat-encodings=minimal:
	  - strip ___XP suffixes in packed arrays' names;
	  - set the debug type for padding records around packed arrays
	    to the packed array;
	  - do not attach ___XUP types as parallel types of constrained
	    array types.
	* gcc-interface/misc.c (gnat_print_type): Update to handle
	orignal packed arrays.
	(gnat_get_debug_type): Update to reject packed arrays
	implementation types.
	(get_array_bit_stride): New.
	(gnat_get_array_descr_info): Add packed arrays handling.
	* gcc-interface/utils.c (maybe_pad_type): When
	-fgnat-encodings=minimal, set the name of the padding type to
	the one of the original packed type, if any.  Fix TYPE_DECL
	peeling around the name of the input type.

From-SVN: r231768

Front-ends like GNAT for Ada sometimes use biased encodings for integral
types.  This change creates a new language hook so that the bias
information can make it into the debugging information back-end and
introduces an experimental DWARF attribute to hold it.

gcc/ada/ChangeLog:

	* gcc-interface/misc.c (gnat_get_type_bias): New.
	(LANG_HOOKS_GET_TYPE_BIAS): Redefine macro to implement the
	get_type_bias language hook.

gcc/ChangeLog:

	* langhooks.h (struct lang_hooks_for_types): New get_bias_field.
	* langhooks-def.h (LANG_HOOKS_GET_TYPE_BIAS): New.
	(LANG_HOOKS_FOR_TYPES_INITIALIZER): Initialize the
	get_bias_field.
	* dwarf2out.c
	(base_type_die): In non-strict DWARF mode, invoke the
	get_type_bias language hook for INTEGER_TYPE nodes.  If it
	returns a bias, emit an attribute for it.
	(subrange_type_die): Change signature to handle bias.  If
	non-strict DWARF mode, emit an attribute for it, if one passed.
	(modified_type_die): For subrange types, invoke the
	get_type_bias langage hook and pass the bias to
	subrange_type_die.

From-SVN: r231767

The array descriptor language hook can hold the description of a limited
number of array dimensions.  This macro will ease preventing overflow in
front-ends.

gcc/ada/ChangeLog:

	* gcc-interface/misc.c (gnat_get_array_descr_info): When the
	array has more dimensions than the language hook can handle,
	fall back to a nested arrays description.  Handle context-less
	array types.

gcc/ChangeLog:

	* dwarf2out.h (DWARF2OUT_ARRAY_DESCR_INFO_MAX_DIMEN): New macro.
	(struct array_descr_info): Use it for the dimensions array's
	size.
	* dwarf2out.c (gen_type_die_with_usage): Check that the array
	descr. language hook does not return an array with more
	dimensions that it should.

From-SVN: r231766

gcc/ada/ChangeLog:

	* gcc-interface/decl.c (gnat_to_gnu_entity): When
	-fgnat-encodings-minimal, do not add ___XUP/XUT suffixes to type
	names and do not generate ___XA parallel types.
	* gcc-interface/misc.c (gnat_get_array_descr_info): Match fat
	and thin pointers and generate the corresponding array type
	descriptions.

From-SVN: r231765

Support for fixed-point types in GCC is not powerful enough for Ada
fixed-point types: GNAT uses regular scalar types to implement them.
This new language hook makes it possible to output the desired debugging
information anyway.

gcc/ada/ChangeLog:

	* gcc-interface/ada-tree.def (POWER_EXPR): New binary operation.
	* gcc-interface/ada-tree.h (TYPE_FIXED_POINT_P): New macro.
	(TYPE_IS_FIXED_POINT_P): New macro.
	(TYPE_SCALE_FACTOR): New macro.
	(SET_TYPE_SCALE_FACTOR): New macro.
	* gcc-interface/decl.c: Include urealp.h
	(gnat_to_gnu_entity): Attach trees to encode scale factors to
	fixed-point types.
	* gcc-interface/misc.c (gnat_print_type): Print scale factors
	for fixed-point types.
	(gnat_get_fixed_point_type_info): New.
	(gnat_init_ts): Initialize data for the POWER_EXPR binary
	operation.
	(LANG_HOOKS_GET_FIXED_POINT_INFO): Redefine macro to implement
	the get_fixed_point_type_info language hook.

gcc/ChangeLog:

	* langhooks.h (struct lang_hooks_for_types): Add a
	get_fixed_point_type_info field.
	* langhooks-def.h (LANG_HOOKS_GET_FIXED_POINT_TYPE_INFO): New
	macro.
	(LANG_HOOKS_FOR_TYPES_INITIALIZER): Initialize the
	get_fixed_point_type_info field.
	* dwarf2out.h (enum fixed_point_scale_factor): New.
	(struct fixed_point_type_info): New.
	* dwarf2out.c (base_type_die): In DWARFv3 or non-strict DWARF
	mode, get fixed-point type information using the debugging hook
	and describe it in DWARF, if any.

From-SVN: r231764

Many artificial types are introduced by GNAT in order to satisfy
constraints in GCC's internal trees or to generate optimal code.  These
hide original types from sources and miss useful information in the
debugging information or add noise to it and make debugging confusing.
This change introduces a new language hook to give a chance to
front-ends to restore the source types in the debugging information.

This change also enhance the array descriptor language hook to handle
array-wide bit/byte stride.  Some arrays may contain dynamically-sized
objects.  Debuggers need for these a hint to know the size allocated for
each element, hence the need for the array-wide bit/byte stride.

The Ada front-end is enhanced to take advantage of both hooks when
-fgnat-encodings=minimal, in order to keep compatibility with GDB.

gcc/ada/ChangeLog:

	* gcc-interface/ada-tree.h (struct lang_type): Rename the t
	field as t1 and add a t2 one.
	(get_lang_specific): New.
	(GET_TYPE_LANG_SPECIFIC): Refactor to use get_lang_specific.
	(SET_TYPE_LANG_SPECIFIC): Likewise.
	(GET_TYPE_LANG_SPECIFIC2): New macro.
	(SET_TYPE_LANG_SPECIFIC2): New macro.
	(TYPE_DEBUG_TYPE): New macro.
	(SET_TYPE_DEBUG_TYPE): New macro.
	* gcc-interface/decl.c (gnat_to_gnu_entity): When
	-fgnat-encodings=minimal, set padding types' debug type to the
	padded one (i.e. strip ___PAD GNAT encodings) and set
	constrained record subtypes's debug type to the base type.
	* gcc-interface/misc.c (gnat_print_type): Print debug types.
	(gnat_get_debug_type): New.
	(gnat_get_array_descr_info): When -fgnat-encodings=minimal, set
	a byte stride for arrays that contain a type whose debug type
	has variable length.
	(LANG_HOOKS_GET_DEBUG_TYPE): Redefine macro to implement the
	debug type language hook.
	* gcc-interface/utils.c (maybe_pad_type): When
	-fgnat-encodings=minimal, set padding types' debug type to the
	padded one.  Restore XVZ variables creation when
	-fgnat-encodings-minimal and use them to hold padding types'
	byte size.  For library-level padding types, share this variable
	across translation units.  Tag XVZ variables as artificial.

gcc/ChangeLog:

	* langhooks.h (struct lang_hooks_for_types): Add a
	get_debug_type field.
	* langhooks-def.h (LANG_HOOKS_GET_DEBUG_TYPE): New macro.
	(LANG_HOOKS_FOR_TYPES_INITIALIZER): Initialize the
	get_debug_type field.
	* dwarf2out.h (struct array_descr_info): Add an array-wide
	stride field.
	* dwarf2out.c (modified_type_die): Invoke the get_debug_type
	language hook, process its result instead, if any.
	(gen_descr_array_type_die): Add array-wide stride processing.

From-SVN: r231763

Enhance the DWARF back-end to emit proper descriptions for
variable-length records as well as variant parts in records.

In order to achieve this, generate DWARF expressions ("location
descriptions" in dwarf2out's parlance) for size and data member location
attributes.  Also match QUAL_UNION_TYPE data types as variant parts,
assuming the formers appear only to implement the latters (which is the
case at the moment: only the Ada front-end emits them).

Note that very few debuggers can handle these descriptions (GDB does not
yet), so in order to ease the the transition enable these only when
-fgnat-encodings=minimal.

gcc/ada/ChangeLog:

	* gcc-interface/decl.c (gnat_to_gnu_entity): Disable ___XVS GNAT
	encodings when -fgnat-encodings=minimal.
	(components_to_record): Disable ___XVE, ___XVN, ___XVU and
	___XVZ GNAT encodings when -fgnat-encodings=minimal.
	* gcc-interface/utils.c (maybe_pad_type): Disable __XVS GNAT
	encodings when -fgnat-encodings=minimal.

gcc/ChangeLog:

	* debug.h (struct gcc_debug_hooks): Add a new size_function
	hook.
	* debug.c (do_nothing_debug_hooks): Set the size_function field
	to no-op.
	* dbxout.c (dbx_debug_hooks, xcoff_debug_hooks): Likewise.
	* sdbout.c (sdb_debug_hooks): Likewise.
	* vmsdbgout.c (vmsdbg_debug_hooks): Likewise.
	* stor-layout.c (finalize_size_functions): Let the debug info
	back-end know about the implementation of size functions.
	* dwarf2out.h (dw_discr_list_ref): New typedef.
	(enum dw_val_class): Add value classes for discriminant values
	and discriminant lists.
	(struct dw_discr_value): New structure.
	(struct dw_val_node): Add discriminant values and discriminant
	lists to the union.
	(struct dw_loc_descr_node): Add frame_offset_rel and
	dw_loc_frame_offset (only for checking) fields to handle DWARF
	procedures generation.
	(struct dw_discr_list_node): New structure.
	* dwarf2out.c (dwarf2out_size_function): New.
	(dwarf2_debug_hooks): Set the size_function field to
	dwarf2out_size_function.
	(dwarf2_lineno_debug_hooks): Set the size_function field to
	no-op.
	(new_loc_descr): Initialize the
	dw_loc_frame_offset field.
	(dwarf_proc_stack_usage_map): New.
	(dw_val_equal_p): Handle discriminants.
	(size_of_discr_value): New.
	(size_of_discr_list): New.
	(size_of_die): Handle discriminants.
	(add_loc_descr_to_each): New.
	(add_loc_list): New.
	(print_discr_value): New.
	(print_dw_val): Handle discriminants.
	(value_format): Handle discriminants.
	(output_discr_value): New.
	(output_die): Handle discriminants.
	(output_loc_operands): Handle DW_OP_call2 and DW_OP_call4.
	(uint_loc_descriptor): New.
	(uint_comparison_loc_list): New.
	(loc_list_from_uint_comparison): New.
	(add_discr_value): New.
	(add_discr_list): New.
	(AT_discr_list): New.
	(loc_descr_to_next_no_op): New.
	(free_loc_descr): New.
	(loc_descr_without_nops): New.
	(struct loc_descr_context): Add a dpi field.
	(struct dwarf_procedure_info): New helper structure.
	(new_dwarf_proc_die): New.
	(is_handled_procedure_type): New.
	(resolve_args_picking_1): New.
	(resolve_args_picking): New.
	(function_to_dwarf_procedure): New.
	(copy_dwarf_procedure): New.
	(copy_dwarf_procs_ref_in_attrs): New.
	(copy_dwarf_procs_ref_in_dies): New.
	(break_out_comdat_types): Copy DWARF procedures along with the
	types that reference them.
	(loc_list_from_tree): Rename into loc_list_from_tree_1.  Handle
	CALL_EXPR in the cases suitable for DWARF procedures.  Handle
	for PARM_DECL when generating a location description for a DWARF
	procedure.  Handle big unsigned INTEGER_CST nodes.  Handle
	NON_LVALUE_EXPR, EXACT_DIV_EXPR and all unsigned comparison
	operators.  Add a wrapper for loc_list_from_tree that strips
	DW_OP_nop operations from the result.
	(type_byte_size): New.
	(struct vlr_context): New helper structure.
	(field_byte_offset): Change signature to return either a
	constant offset or a location description for dynamic ones.
	Handle dynamic byte offsets with constant bit offsets and handle
	fields in variant parts.
	(add_data_member_location): Change signature to handle dynamic
	member offsets and fields in variant parts.  Update call to
	field_byte_offset.  Handle location lists.  Emit a variable data
	member location only when -fgnat-encodings=minimal.
	(add_bound_info): Emit self-referential bounds only when
	-fgnat-encodings=minimal.
	(add_byte_size_attribute): Use type_byte_size in order to handle
	dynamic type sizes.  Emit variable byte size only when
	-fgnat-encodings=minimal and when the target DWARF version
	allows them.
	(add_bit_offset_attribute): Change signature to handle
	variable-length records.  Update call to field_byte_offset.
	(gen_descr_array_type_die): Update call to gen_field_die.
	Update loc_descr_context literal.
	(gen_type_die_for_member): Likewise.
	(gen_subprogram_die): Update calls to get_decl_die.
	(gen_field_die): Change signature to handle variable-length
	records.  Update calls to add_bit_offset_attribute and
	add_data_member_location_attribute.
	(gen_inheritance_die): Update call to
	add_data_member_location_attribute.
	(gen_decl_die): Change signature to handle variable-length
	records.  Update call to gen_field_die.
	(gen_inheritance_die): Change signature to handle
	variable-length records.  Update call to
	add_data_member_location_attribute.
	(is_variant_part): New.
	(analyze_discr_in_predicate): New.
	(get_discr_value): New.
	(analyze_variants_discr): New.
	(gen_variant_part): New.
	(gen_member_die): Update calls to gen_decl_die.  Call instead
	gen_variant_part for variant parts.
	(gen_type_die_with_usage): Update calls to gen_decl_die.
	(process_scope_var): Likewise.
	(force_decl_die): Likewise.
	(declare_in_namespace): Likewise.
	(dwarf2out_decl): Likewise.
	(prune_unused_types_walk_loc_descr): New.
	(prune_unused_types_walk_attribs): Mark DIEs referenced by
	location descriptions and loc. descr. lists.
	(prune_unused_types_walk): Don't mark DWARF procedures by
	default.  Mark variant parts since nothing is supposed to
	reference them.
	(dwarf2out_init): Allocate dwarf_proc_stack_usage_map.
	(dwarf2out_c_finalize): Deallocate and reset
	dwarf_proc_stack_usage_map.

gcc/testsuite/ChangeLog:

	* gnat.dg/specs/debug1.ads: Update the expected number of
	DW_AT_artificial attribute in compiler output.

From-SVN: r231762

In order to accomodate the debugger's support evolution for "new" DWARF
constructs, we need to have an flag that controls the amount of GNAT
encodings/standard DWARF information that is emitted in the debug info.
Propagate this new parameter into the Ada front-end.

gcc/ChangeLog:

	* common.opt (gnat_encodings): New variable
	(dwarf_gnat_encodings): New enum type.
	(fgnat_encodings): New option.
	* flag-types.h (enum dwarf_gnat_encodings): New.

gcc/ada/ChangeLog:

	* gcc-interface/misc.c (gnat_encodings): Undefine macro and
	declare a global variable.
	(gnat_post_options): Initialize this global from options.

From-SVN: r231761

	* config/isl.m4 (ISL_CHECK_VERSION): Add gmp libs.
	* configure: Regenerate.

From-SVN: r231759

2015-12-17  Christian Bruel  <christian.bruel@st.com>

	* tree.h (TYPE_MODE_RAW): New macro.
	* tree-streamer-out.c (pack_ts_type_common_value_fields):
	Replace TYPE_MODE by TYPE_MODE_RAW.

From-SVN: r231758

	PR tree-optimization/68835
	* tree.c (get_int_cst_ext_nunits): Return
	cst.get_precision () / HOST_BITS_PER_WIDE_INT + 1
	for all unsigned wi::neg_p (cst) constants.
	(build_new_int_cst): If cst.get_precision is not a multiple
	of HOST_BITS_PER_WIDE_INT, zero extend -1 to the precision
	% HOST_BITS_PER_WIDE_INT.

	* gcc.dg/pr68835-1.c: New test.
	* gcc.dg/pr68835-2.c: New test.

From-SVN: r231757

PR c++/59878 -> PR c++/59879

From-SVN: r231755

2015-12-17  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/68951
	* tree-vect-data-refs.c (vect_peeling_hash_get_lowest_cost):
	Ignore strided non-group accesses.

	* gcc.dg/torture/pr68951.c: New testcase.

From-SVN: r231754

arc.c (arc_loop_hazard): Don't convert the jump label rtx to an rtx_insn until we confirm it's not a...

2015-12-17  Andrew Burgess  <andrew.burgess@embecosm.com>
gcc:
        * config/arc/arc.c (arc_loop_hazard): Don't convert the jump label
        rtx to an rtx_insn until we confirm it's not a return rtx.
gcc/testsuite:
        * gcc.target/arc/loop-hazard-1.c: New file

From-SVN: r231752

2015-12-17  Richard Biener  <rguenther@suse.de>

	* gimple-ssa.h (struct gimple_df): Remove modified_noreturn_calls
	field.
	* tree-ssa.c (delete_tree_ssa): Do not zero it.

From-SVN: r231751

	gcc:
	PR target/67973
	* configure.ac (gcc_cv_as_stabs_directive): New test.
	* configure: Regenerate.
	* config.in: Regenerate.
	* config/darwin.h (DBX_DEBUGGING_INFO): Wrap in
	HAVE_AS_STABS_DIRECTIVE.
	(PREFERRED_DEBUGGING_TYPE): Likewise.
	* config/i386/darwin.h (PREFERRED_DEBUGGING_TYPE): Only include
	DBX_DEBUG if HAVE_AS_STABS_DIRECTIVE.

	* doc/sourcebuild.texi (Effective-Target Keywords, Environment
	attributes): Document stabs.

	gcc/testsuite:
	PR target/67973
	* lib/target-supports.exp (check_effective_target_stabs): New
	proc.
	* g++.dg/cpp0x/alias-decl-debug-0.C: Restrict to stabs targets.
	* g++.dg/other/PR23205.C: Likewise.
	* g++.dg/other/pr23205-2.C: Likewise.
	* gcc.dg/20040813-1.c: Likewise.
	* gcc.dg/darwin-20040809-2.c: Likewise.
	* objc.dg/stabs-1.m: Likewise.

From-SVN: r231747

2015-12-17  Andrew Burgess  <andrew.burgess@embecosm.com>

        * gcc.target/arc/jump-around-jump.c (rtc_set_time): Declare.

From-SVN: r231746