This patch fixes a spurious error in a program that contains a
discriminated task type and several of its subtype in the same
declarative part, when the corresponding discriminant constraints are
expressions.

2018-08-21  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* sem_util.ads, sem_util.adb (New_External_Entity): Type of
	Suffix_Index must be Int, not Nat, so that a negative value can
	be used to generate a unique name for an external object, as
	specified in Tbuild.New_External_Name.
	(Scope_Within): Handle private type whose completion is a
	synchronized type (For unnesting).
	* itypes.ads, itypes.adb (Create_Itype): Ditto
	* sem_ch3.adb (Constrain_Corresponding_Record): Generate a
	unique name for the created subtype, because there may be
	several discriminated tasks present in the same scope, and each
	needs its distinct corresponding record subtype.

gcc/testsuite/

	* gnat.dg/task1.adb, gnat.dg/task1.ads, gnat.dg/task1_pkg.adb,
	gnat.dg/task1_pkg.ads: New testcase.

From-SVN: r263716

The dimension system in System.Dim.Mks is based on Long_Long_Float,
which may not be convenient to people who want to use Float or
Long_Float as basis. These new files provide units that define the
dimension system based on Float in System.Dim.Float_Mks and on
Long_Float in System.Dim.Long_Mks.

Child packages Other_Prefixes and Mks_IO are also defined appropriately,
with new instantiations for the various sizes of floating-point types.

2018-08-21  Yannick Moy  <moy@adacore.com>

gcc/ada/

	* doc/gnat_ugn/gnat_and_program_execution.rst: Update
	documentation of dimensionality analysis.
	* gnat_ugn.texi: Regenerate.
	* Makefile.rtl, impunit.adb: Consider the new units.
	* libgnat/s-dfmkio.ads, libgnat/s-dfmopr.ads,
	libgnat/s-diflmk.ads: New units based on Float.
	* libgnat/s-dilomk.ads, libgnat/s-dlmkio.ads,
	libgnat/s-dlmopr.ads: New units based on Long_Float.
	* libgnat/s-dmotpr.ads: Rename to libgnat/s-dgmgop.ads and turn
	into an instance of
	System.Dim.Generic_Mks.Generic_Other_Prefixes.
	* libgnat/s-dimmks.ads: Rename to libgnat/s-digemk.ads and turn
	into an instance of System.Dim.Generic_Mks.

From-SVN: r263715

This patch adds unit GNAT.Lists which currently contains the
implementation of a general purpose doubly linked list intended for use
by the compiler and the tools around it.

2018-08-21  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

	* impunit.adb: Add g-lists to the set of non-implementation
	units.
	* libgnat/g-lists.adb, libgnat/g-lists.ads: New unit.
	* Makefile.rtl: Add g-lists to the set of non-tasking units.
	* gcc-interface/Make-lang.in: Add g-lists to the set of files
	used by gnat1.

gcc/testsuite/

	* gnat.dg/linkedlist.adb: New testcase.

From-SVN: r263714

2018-08-21  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* exp_ch9.adb (Reset_Scopes): Do not recurse into type
	declarations when resetting the scope of entities declared the
	procedures generated for entry bodies and accept alternatives.
	Use the entity of the procedure declaration, not its body, as
	the new scope.

From-SVN: r263713

This patch modifies the set of attributes that applies to entries and
entry families to include elaboration entities used by the
access-before-elaboration mechanism.

2018-08-21  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

	* einfo.adb (Elaboration_Entity): Include entries and entry
	families in the set of legal entities.
	(Elaboration_Entity_Required): Include entries and entry
	families in the set of legal entities.
	(Set_Elaboration_Entity): Include entries and entry families in
	the set of legal entities.
	(Set_Elaboration_Entity_Required): Include entries and entry
	families in the set of legal entities.
	(Write_Field13_Name): Update the output of attribute
	Elaboration_Entity.
	* einfo.ads: Attributes Elaboration_Entity and
	Elaboration_Entity_Required now apply to entries and entry
	families.

gcc/testsuite/

	* gnat.dg/elab6.adb, gnat.dg/elab6.ads, gnat.dg/elab6_pkg.adb,
	gnat.dg/elab6_pkg.ads: New testcase.

From-SVN: r263712

2018-08-21  Arnaud Charlet  <charlet@adacore.com>

gcc/ada/

	* set_targ.adb: Mark some CodePeer message as Intentional.

From-SVN: r263711

If a discriminant specification has a default that is a call to an
expression function, that function has to be frozen at the point of a
call to the initialization procedure for an object of the record type,
even though the call does not appear to come from source.

2018-08-21  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* sem_res.adb (Resolve_Call): Force the freezing of an
	expression function that is called to provide a default value
	for a defaulted discriminant in an object initialization.

gcc/testsuite/

	* gnat.dg/expr_func5.adb: New testcase.

From-SVN: r263710

This patch introduces a dynamically resizable, load factor-based hash
table in unit GNAT.Dynamic_HTables.

2018-08-21  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

	* libgnat/g-dynhta.adb, libgnat/g-dynhta.ads: New package
	Dynamic_HTable.

gcc/testsuite/

	* gnat.dg/dynhash.adb: New testcase.

From-SVN: r263709

The compiler may report errors on enumeration types with non-standard
representation (i.e. at least one literal has a representation value
different from its 'Pos value) processing attribute 'Enum_Rep.

It may also generate wrong code for the evaluation of 'Enum_Rep raising
Constraint_Error at runtime.

2018-08-21  Javier Miranda  <miranda@adacore.com>

gcc/ada/

	* checks.ads (Determine_Range): Adding documentation.
	* checks.adb (Determine_Range): Don't deal with enumerated types
	with non-standard representation.
	(Convert_And_Check_Range): For conversion of enumeration types
	with non standard representation to an integer type perform a
	direct conversion to the target integer type.

gcc/testsuite/

	* gnat.dg/enum4.adb: New testcase.

From-SVN: r263708

In GNATprove we appear to abuse a routine related to cross-references and
expect it to deliver exact results, which is not what it was designed for.

This patch is a temporary solution to avoid crashes in GNATprove; it doesn't
affect the frontend or other backends, because this code is used exclusively
by GNATprove (it is located in the frontend for technical reasons). No tests
provided.

2018-08-21  Piotr Trojanek  <trojanek@adacore.com>

gcc/ada/

	* lib-xref.ads, lib-xref-spark_specific.adb
	(Enclosing_Subprogram_Or_Library_Package): Now roughtly works
	for pragmas that come from aspect specifications.

From-SVN: r263707

These new source files will make it possible to build SPARK 2014 from
a snapshot of GCC FSF sources.

2018-08-21  Pierre-Marie de Rodat  <derodat@adacore.com>

gcc/ada/

	* sa_messages.ads, sa_messages.adb: New source files.

From-SVN: r263706

From-SVN: r263703

2018-08-21  Richard Sandiford  <richard.sandiford@arm.com>

	* MAINTAINERS: Add self to global reviewers list.

From-SVN: r263702

	* tree.c (find_decls_types_r): Do not check for redundant typedefs.
	* tree.h (is_redundant_typedef): Remove.
	* dwarf2out.c (is_redundant_typedef): Turn into static function.

From-SVN: r263699

2018-08-21  Pierre-Marie de Rodat  <derodat@adacore.com>

gcc/ada/

	* libgnarl/a-intnam__dragonfly.ads,
	libgnarl/s-osinte__dragonfly.adb,
	libgnarl/s-osinte__dragonfly.ads, libgnarl/s-osinte__gnu.adb,
	libgnarl/s-osinte__gnu.ads, libgnarl/s-osinte__hpux-dce.adb,
	libgnarl/s-osinte__hpux-dce.ads,
	libgnarl/s-taprop__hpux-dce.adb,
	libgnarl/s-taspri__hpux-dce.ads: Bump copyright notices to 2018.

From-SVN: r263698

	* tree.c (free_lang_data_in_decl): Remove types from DECL_CONTEXT
	when possible.

From-SVN: r263697

This patch fixes an ICE that would happen when extract_low_bits
is called with modes for which you can't extract a valid subreg.
e.g. taking a 32 bytes subreg from a 48 byte mode.

The ICE happens because convert_modes which eventually calls
simplify_gen_subreg does not expect the convertion to fail.

The assert in gen_lowpart_general would then be hit.  The patch
changes it to validate the subreg before trying to convert the
modes.  If the subreg is not possible we return NULL_RTX and bail
out early.

gcc/ChangeLog:

2018-08-21  Tamar Christina  <tamar.christina@arm.com>

	* expmed.c (extract_low_bits): Reject invalid subregs early.

gcc/testsuite/ChangeLog:

2018-08-21  Tamar Christina  <tamar.christina@arm.com>

	* gcc.target/aarch64/large_struct_copy.c: New test.

From-SVN: r263696

These tests accidentally had two dg-do directives. Only the second one
is needed.

	* testsuite/26_numerics/bit/bitops.count/countl_one.cc: Remove
	redundant dg-do directive.
	* testsuite/26_numerics/bit/bitops.count/countl_zero.cc: Likewise.
	* testsuite/26_numerics/bit/bitops.count/countr_one.cc: Likewise.
	* testsuite/26_numerics/bit/bitops.count/countr_zero.cc: Likewise.
	* testsuite/26_numerics/bit/bitops.count/popcount.cc: Likewise.

From-SVN: r263695

clock_gettime is not available on some baremetal targets
and may require -lrt on some non-linux targets.

gcc/testsuite/ChangeLog:

	* g++.dg/torture/pr86763.C: Restrict to *-*-linux*.

From-SVN: r263694

2018-08-21  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR middle-end/86121
        * tree-ssa-strlen.c (adjust_last_stmt): Avoid folding away undefined
        behaviour.

testsuite:
2018-08-21  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR middle-end/86121
        * gcc.dg/Wstringop-overflow-6.c: Remove xfail.

From-SVN: r263693

When the compiler is configured with --enable-initfini-array,
config/initfini-array.h gets included after config/vxworks.h by tm.h, so
the definitions of TARGET_ASM_CONSTRUTOR/TARGET_ASM_DESTRUCTOR in
vxworks.h get undone in initfini-array.h. Hence, we might as well not
define the vxworks_asm_out_* functions.

From-SVN: r263692

The target OS actually runs all function pointers found in the _ctors
array when the module is loaded. So it is not that hard to make use of
the "modern" .init_array/.fini_array mechanism - it mostly just requires
a linker script adding the _ctors and _dtors symbols and terminating
LONG(0) entries.

Assume that if the user passed --enable-initfini-array when building
gcc, the rest of the toolchain (including the link spec and linker
script) is set up appropriately.

Note that configuring with --enable-initfini-array may prevent the -mrtp
mode from working, due to the (unconditional) use of .init_array.*
sections instead of .ctors.* - however, that is the case regardless of this
patch.

From-SVN: r263691

In order to allow ZCX on VxWorks, we need the frame_dummy function to do
the register_frame_info(). So make sure crtbegin.o and crtend.o are
available for use with a custom spec file.

From-SVN: r263690

In order to build crtstuff.c, I need to ensure the headers in
target/h/wrn/coreip are also searched. Of course, that can be done
similar to how wrn/coreip gets manually added for libgcc, e.g. by adding

  CRTSTUFF_T_CFLAGS += -I$(WIND_BASE)/target/h -I$(WIND_BASE)/target/h/wrn/coreip

But without target/h/wrn/coreip in the default search path, all
user-code that include <unistd.h> (crtstuff.c just being one such
example) will have to manually add an -isystem
flag adding the wrn/coreip directory: unistd.h include ioLib.h, which
has

#include "net/uio.h"

and that header is found in target/h/wrn/coreip. In other words, the
VxWorks system headers (at least for VxWorks 5.5) are written in a way
that assumes wrn/coreip is in the search path, so I think it makes sense
to have that by default.

It will change the search order for existing setups that pass
-I.../target/h/wrn/coreip (without -nostdinc), since that flag will now
be ignored. I can't know whether that will break anything, but I do
believe it makes sense to have the defaults actually usable without
expecting all invocations to add -I/-isystem flags.

From-SVN: r263689

2018-08-21  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * gimple-ssa-sprintf.c (decl_constant_value): Remove.
        (get_format_string): Refer to c_getstr.

From-SVN: r263688

With the introduction of early debug, we've added a phase in the compiler which
produces information which is not visible, unless we run the compiler in the
debugger and call debug_dwarf from dwarf2out_early_finish or some such.

This patch adds dumping of "early" and "final" debug info, into .earlydebug
and .debug dump files, enabled by -fdump-earlydebug and -fdumpdebug, such that
we can follow f.i. the upper bound of a vla type from early debug:
...
          DW_AT_upper_bound: location descriptor:
            (0x7f0d645b7550) DW_OP_GNU_variable_value , 0
...
to final debug:
...
          DW_AT_upper_bound: location descriptor:
            (0x7f0d645b7550) DW_OP_fbreg 18446744073709551592, 0
            (0x7f0d645b7a00) DW_OP_deref 8, 0
...
to -dA annotated assembly file:
...
        .uleb128 0x3    # DW_AT_upper_bound
        .byte   0x91    # DW_OP_fbreg
        .sleb128 -24
        .byte   0x6     # DW_OP_deref
...

The .debug file shows the same information as the annotated assembly, but in
the same format as the "early" debug info.

Bootstrapped and reg-tested on x86_64.

2018-08-21  Tom de Vries  <tdevries@suse.de>

	* cgraph.h (debuginfo_early_init, debuginfo_init, debuginfo_fini)
	(debuginfo_start, debuginfo_stop, debuginfo_early_start)
	(debuginfo_early_stop): Declare.
	* cgraphunit.c (debuginfo_early_init, debuginfo_init, debuginfo_fini)
	(debuginfo_start, debuginfo_stop, debuginfo_early_start)
	(debuginfo_early_stop): New function.
	(symbol_table::finalize_compilation_unit): Call debuginfo_early_start
	and debuginfo_early_stop.
	* dwarf2out.c (dwarf2out_finish, dwarf2out_early_finish): Dump dwarf.
	* toplev.c (compile_file): Call debuginfo_start and debuginfo_stop.
	(general_init): Call debuginfo_early_init.
	(finalize): Call debuginfo_fini.
	(do_compile): Call debuginfo_init.
	* doc/invoke.texi (@gccoptlist): Add -fdump-debug and
	-fdump-early-debug.
	(@item -fdump-debug, @item -fdump-earlydebug): Add.

	* lto.c (lto_main):  Call debuginfo_early_start and
	debuginfo_early_stop.

	* gcc.c-torture/unsorted/dump-noaddr.x: Use -gno-record-gcc-switches
	to avoid mismatch in .debug and .earlydebug dump files.

From-SVN: r263687

2018-08-21  Tom de Vries  <tdevries@suse.de>

	* dwarf2out.c (print_dw_val, print_loc_descr, print_die): Handle
	flag_dump_noaddr and flag_dump_unnumbered.

From-SVN: r263686

	* wide-int-range.cc (wide_int_range_abs): New.
	(wide_int_range_order_set): Rename from wide_int_range_min_max.
	* wide-int-range.h (wide_int_range_abs): New.
	(wide_int_range_min_max): New.
	* tree-vrp.c (extract_range_from_unary_expr): Rewrite ABS_EXPR
	case to call wide_int_range_abs.
	Rewrite MIN/MAX_EXPR to call wide_int_range_min_max.
	(extract_range_from_abs_expr): Delete.

From-SVN: r263685

From-SVN: r263683

https://gcc.gnu.org/ml/gcc-patches/2018-08/msg01170.html
	* pex-unix.c (pex_child_error): Delete.
	(pex_unix_exec_child): Commonize error paths to single message &
	exit.

From-SVN: r263679

[gcc]
2018-08-20  Michael Meissner  <meissner@linux.ibm.com>

	PR target/87033
	* config/rs6000/rs6000.md (extendsi<mode>2): Change constraints
	from 'Y' to 'YZ' to enable the LWAX instruction to be generated
	for indexed loads.

[gcc/testsuite]
2018-08-20  Michael Meissner  <meissner@linux.ibm.com>

	PR target/87033
	* gcc.target/powerpc/pr87033.c: New test.

From-SVN: r263678

https://gcc.gnu.org/ml/gcc-patches/2018-08/msg01214.html
	* config/s390/s390-c (s390_macro_to_expand): Use cpp_macro_p.
	* config/spu/spu-c.c (spu_macro_to_expand): Likewise.

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

From-SVN: r263677

gcc/testsuite/ChangeLog:
	* gcc.dg/builtin-sprintf-warn-20.c: New test.

From-SVN: r263676

We often emit logically-related groups of diagnostics.

A relatively simple case is this:

  if (warning_at (body_loc, OPT_Wmultistatement_macros,
                  "macro expands to multiple statements"))
    inform (guard_loc, "some parts of macro expansion are not guarded by "
            "this %qs clause", guard_tinfo_to_string (keyword));

where the "note" diagnostic issued by the "inform" call
is guarded by the -Wmultistatement_macros warning.

More complicated examples can be seen in the C++ frontend,
where e.g. print_z_candidates can lead to numerous "note"
diagnostics being emitted.

I'm looking at various ways to improve how we handle such related
diagnostics, but, prior to this patch, there was no explicit
relationship between these diagnostics: the diagnostics subsystem
had no way of "knowing" that these were related.

This patch introduces a simple way to group the diagnostics:
an auto_diagnostic_group class: all diagnostics emitted within
the lifetime of an auto_diagnostic_group instance are logically
grouped.

Hence in the above example, the two diagnostics can be grouped
by simply adding an auto_diagnostic_group instance:

  auto_diagnostic_group d;
  if (warning_at (body_loc, OPT_Wmultistatement_macros,
                  "macro expands to multiple statements"))
    inform (guard_loc, "some parts of macro expansion are not guarded by "
            "this %qs clause", guard_tinfo_to_string (keyword));

Some more awkard cases are of the form:

  if (some_condition
      && warning_at (...)
      && more_conditions)
    inform (...);

which thus need restructuring to:

  if (some_condition)
    {
      auto_diagnostic_group d;
      warning_at (...);
      if (more_conditions)
        inform (...);
    }

so that the lifetime of the auto_diagnostic_group groups the
warning_at and the inform call.

Nesting is handled by simply tracking a nesting depth within the
diagnostic_context.: all diagnostics are treated as grouped until the
final auto_diagnostic_group is popped.

diagnostic.c uses this internally, so that all diagnostics are part of
a group - those that are "by themselves" are treated as being part of
a group with one element.

The diagnostic_context gains optional callbacks for displaying the
start of a group (when the first diagnostic is emitted within it), and
the end of a group (for when the group was non-empty); these callbacks
are unused by default, but a test plugin demonstrates them (and verifies
that the machinery is working).

As noted above, I'm looking at various ways to use the grouping to
improve how we output the diagnostics.

FWIW, I experimented with a more involved implementation, of the form:

  diagnostic_group d;
  if (d.warning_at (body_loc, OPT_Wmultistatement_macros,
                    "macro expands to multiple statements"))
    d.inform (guard_loc, "some parts of macro expansion are not guarded by "
              "this %qs clause", guard_tinfo_to_string (keyword));

which had the advantage of allowing auto-detection of the places where
groups were needed (by converting ::warning_at's return type to bool),
but it was a much more invasive patch, especially when dealing with
the places in the C++ frontend that can emit numerous notes after
an error or warning (and thus having to pass the group around)
Hence I went with this simpler approach.

gcc/c-family/ChangeLog:
	PR other/84889
	* c-attribs.c (common_handle_aligned_attribute): Add
	auto_diagnostic_group instance.
	* c-indentation.c (warn_for_misleading_indentation): Likewise.
	* c-opts.c (c_common_post_options): Likewise.
	* c-warn.c (warn_logical_not_parentheses): Likewise.
	(warn_duplicated_cond_add_or_warn): Likewise.
	(warn_for_multistatement_macros): Likewise.

gcc/c/ChangeLog:
	PR other/84889
	* c-decl.c (pushtag): Add auto_diagnostic_group instance.
	(diagnose_mismatched_decls): Likewise, in various places.
	(warn_if_shadowing): Likewise.
	(implicit_decl_warning): Likewise.
	(implicitly_declare): Likewise.
	(undeclared_variable): Likewise.
	(declare_label): Likewise.
	(grokdeclarator): Likewise.
	(start_function): Likewise.
	* c-parser.c (c_parser_declaration_or_fndef): Likewise.
	(c_parser_parameter_declaration): Likewise.
	(c_parser_binary_expression): Likewise.
	* c-typeck.c (c_expr_sizeof_expr): Likewise.
	(parser_build_binary_op): Likewise.
	(build_unary_op): Likewise.
	(error_init): Likewise.
	(pedwarn_init): Likewise.
	(warning_init): Likewise.
	(convert_for_assignment): Likewise.

gcc/cp/ChangeLog:
	PR other/84889
	* call.c (build_user_type_conversion_1): Add auto_diagnostic_group
	instance(s).
	(print_error_for_call_failure): Likewise.
	(build_op_call_1): Likewise.
	(build_conditional_expr_1): Likewise.
	(build_new_op_1): Likewise.
	(build_op_delete_call): Likewise.
	(convert_like_real): Likewise.
	(build_over_call): Likewise.
	(build_new_method_call_1): Likewise.
	(joust): Likewise.
	* class.c (check_tag): Likewise.
	(finish_struct_anon_r): Likewise.
	(one_inherited_ctor): Likewise.
	(finalize_literal_type_property): Likewise.
	(explain_non_literal_class): Likewise.
	(find_flexarrays): Likewise.
	(resolve_address_of_overloaded_function): Likewise.
	* constexpr.c (ensure_literal_type_for_constexpr_object): Likewise.
	(is_valid_constexpr_fn): Likewise.
	(cx_check_missing_mem_inits): Likewise.
	* cp-gimplify.c (cp_genericize_r): Likewise.
	* cvt.c (maybe_warn_nodiscard): Likewise.
	* decl.c (warn_extern_redeclared_static): Likewise.
	(check_redeclaration_exception_specification): Likewise.
	(check_no_redeclaration_friend_default_args): Likewise.
	(duplicate_decls): Likewise.
	(redeclaration_error_message): Likewise.
	(warn_misplaced_attr_for_class_type): Likewise.
	* decl2.c (finish_static_data_member_decl): Likewise.
	(no_linkage_error): Likewise.
	(cp_warn_deprecated_use): Likewise.
	* error.c (qualified_name_lookup_error): Likewise.
	* friend.c (make_friend_class): Likewise.
	(do_friend): Likewise.
	* init.c (perform_member_init): Likewise.
	(build_new_1): Likewise.
	(build_vec_delete_1): Likewise.
	(build_delete): Likewise.
	* lex.c (unqualified_name_lookup_error): Likewise.
	* name-lookup.c (check_extern_c_conflict): Likewise.
	(inform_shadowed): New function.
	(check_local_shadow): Add auto_diagnostic_group instances,
	replacing goto "inform_shadowed" label with call to subroutine.
	(set_local_extern_decl_linkage): Add auto_diagnostic_group
	instance(s).
	* parser.c (cp_parser_diagnose_invalid_type_name): Likewise.
	(cp_parser_namespace_name): Likewise.
	* pt.c (check_specialization_namespace): Likewise.
	(check_template_variable): Likewise.
	(warn_spec_missing_attributes): Likewise.
	(check_explicit_specialization): Likewise.
	(process_partial_specialization): Likewise.
	(lookup_template_class_1): Likewise.
	(finish_template_variable): Likewise.
	(do_auto_deduction): Likewise.
	* search.c (check_final_overrider): Likewise.
	(look_for_overrides_r): Likewise.
	* tree.c (maybe_warn_parm_abi): Likewise.
	* typeck.c (cxx_sizeof_expr): Likewise.
	(cp_build_function_call_vec): Likewise.
	(cp_build_binary_op): Likewise.
	(convert_for_assignment): Likewise.
	(maybe_warn_about_returning_address_of_local): Likewise.
	* typeck2.c (abstract_virtuals_error_sfinae): Likewise.
	(check_narrowing): Likewise.

gcc/ChangeLog:
	PR other/84889
	* attribs.c (diag_attr_exclusions): Add auto_diagnostic_group instance.
	(decl_attributes): Likewise.
	* calls.c (maybe_warn_nonstring_arg): Add auto_diagnostic_group
	instance.
	* cgraphunit.c (maybe_diag_incompatible_alias): Likewise.
	* diagnostic-core.h (class auto_diagnostic_group): New class.
	* diagnostic.c (diagnostic_initialize): Initialize the new fields.
	(diagnostic_report_diagnostic): Handle the first diagnostics within
	a group.
	(emit_diagnostic): Add auto_diagnostic_group instance.
	(inform): Likewise.
	(inform_n): Likewise.
	(warning): Likewise.
	(warning_at): Likewise.
	(warning_n): Likewise.
	(pedwarn): Likewise.
	(permerror): Likewise.
	(error): Likewise.
	(error_n): Likewise.
	(error_at): Likewise.
	(sorry): Likewise.
	(fatal_error): Likewise.
	(internal_error): Likewise.
	(internal_error_no_backtrace): Likewise.
	(auto_diagnostic_group::auto_diagnostic_group): New ctor.
	(auto_diagnostic_group::~auto_diagnostic_group): New dtor.
	* diagnostic.h (struct diagnostic_context): Add fields
	"diagnostic_group_nesting_depth",
	"diagnostic_group_emission_count", "begin_group_cb",
	"end_group_cb".
	* gimple-ssa-isolate-paths.c (find_implicit_erroneous_behavior):
	Add auto_diagnostic_group instance(s).
	(find_explicit_erroneous_behavior): Likewise.
	* gimple-ssa-warn-alloca.c (pass_walloca::execute): Likewise.
	* gimple-ssa-warn-restrict.c (maybe_diag_offset_bounds): Likewise.
	* gimplify.c (warn_implicit_fallthrough_r): Likewise.
	(gimplify_va_arg_expr): Likewise.
	* hsa-gen.c (HSA_SORRY_ATV): Likewise.
	(HSA_SORRY_AT): Likewise.
	* ipa-devirt.c (compare_virtual_tables): Likewise.
	(warn_odr): Likewise.
	* multiple_target.c (expand_target_clones): Likewise.
	* opts-common.c (cmdline_handle_error): Likewise.
	* reginfo.c (globalize_reg): Likewise.
	* substring-locations.c (format_warning_n_va): Likewise.
	* tree-inline.c (expand_call_inline): Likewise.
	* tree-ssa-ccp.c (pass_post_ipa_warn::execute): Likewise.
	* tree-ssa-loop-niter.c
	(do_warn_aggressive_loop_optimizations): Likewise.
	* tree-ssa-uninit.c (warn_uninit): Likewise.
	* tree.c (warn_deprecated_use): Likewise.

gcc/testsuite/ChangeLog:
	PR other/84889
	* gcc.dg/plugin/diagnostic-group-test-1.c: New test.
	* gcc.dg/plugin/diagnostic_group_plugin.c: New test.
	* gcc.dg/plugin/plugin.exp (plugin_test_list): Add the new tests.

From-SVN: r263675

On x86, return address is always popped in word_mode.  eh_return needs
to put EH return address in word_mode on stack.

gcc/

	PR target/87014
	* config/i386/i386.md (eh_return): Always update EH return
	address in word_mode.

gcc/testsuite/

	PR target/87014
	* g++.dg/torture/pr87014.C: New file.

From-SVN: r263672

targhooks.c (std_gimplify_va_arg_expr): Properly handle case of when TARGET_SPLIT_COMPLEX_ARG is defined.

	* targhooks.c (std_gimplify_va_arg_expr): Properly handle case of when
	TARGET_SPLIT_COMPLEX_ARG is defined.

From-SVN: r263671

https://gcc.gnu.org/ml/gcc-patches/2018-08/msg01171.html
	* include/cpplib.h: Fixup some whitespace.
	(cpp_hashnode): Reduce type to 2 bit & flags to 8.

From-SVN: r263669

https://gcc.gnu.org/ml/gcc-patches/2018-08/msg01164.html
	* include/cpplib.h (NODE_BUILTIN, NODE_MACRO_ARG): Delete.
	Renumber others.
	(enum node_type): Replace NT_MACRO with NT_USER_MACRO,
	NT_BUILTIN_MACRO, NT_MACRO_ARG.  Delete NT_ASSERTION.
	(NTV_MACRO, NTV_ANSWER, NTV_BUILTIN, NTV_ARGUMENT, NTV_NONE):
	Delete.
	(CPP_HASHNODE_VALUE_IDX): Delete.
	(union _cpp_hashnode_value): GTY tag from enum node_type directly.
	(struct cpp_hashnode): Adjust GTY desc for value field.
	(cpp_user_macro_p, cpp_builtin_macro_p, cpp_macro_p): Adjust.
	* directives.c (undefine_macros): Clear value.anwers, adjust flag
	clearing.
	(_cpp_test_assertion): No need to check NT_ASSERTION.
	(do_assert, do_unassert): Likewise.
	* init.c (cpp_init_special_builtins): Set type not flags.
	* macro.c (struct macro_arg_saved_data): Add type field.
	(cpp_get_token_1): Check type not NT_VOID.
	(_cpp_free_definition): Adjust flag clearing.  Nullify
	value.answers.
	(_cpp_save_parameter, _cpp_unsave_parameters): Save and restore
	type.
	(lex_expansion_token): Check type not flags.
	(_cpp_create_definition): Set type to NT_USER_MACRO.
	(_cpp_notify_macro_use): Adjust type checking.
	* pch.c (write_macdef, count_defs, write_defs, cpp_valid_state)
	(save_macros): Adjust node type/flag handling.
	* traditional.c (_cpp_scan_out_logical_line): Check type not flags.

From-SVN: r263667

https://gcc.gnu.org/ml/gcc-patches/2018-08/msg01162.html
	* directives.c (do_undef): Use cpp_macro_p & cpp_builtin_macro_p.
	* include/cpplib.h (enum cpp_macro_kind): Remove trailing comma.
	(cpp_fun_like_macro_p): Make inline, define.
	* macro.c (cpp_define_lazily): Use UCHAR_MAX.
	(cpp_fun_like_macro_p): Delete.

From-SVN: r263666

2018-08-20  Bernd Edlinger  <bernd.edlinger@hotmail.de>
 
	* expr.c (store_field): Change gcc_assert to gcc_checking_assert.

From-SVN: r263665