This patch eliminates the hard-coded limits within rich_location
(up to 3 ranges, up to 2 fixits).  The common case is still
handled by embedding the values inside rich_location - it only
uses dynamic allocation if these limits are exceeded, so
creation of rich_location instances on the stack should still
be fast.  This is implemented via a new container class,
semi_embedded_vec <T, N>.

gcc/ChangeLog:
	* diagnostic-show-locus.c (colorizer::begin_state): Support more
	than 3 ranges per diagnostic by alternating between color 1 and
	color 2.
	(layout::layout): Replace use of rich_location::MAX_RANGES
	with richloc->get_num_locations ().
	(layout::calculate_line_spans): Replace use of
	rich_location::MAX_RANGES with m_layout_ranges.length ().
	(layout::print_annotation_line): Handle arbitrary numbers of
	ranges in caret-printing by defaulting to '^'.
	(selftest::test_one_liner_many_fixits): New function.
	(test_diagnostic_show_locus_one_liner): Call it.
	* diagnostic.c (diagnostic_initialize): Update for renaming
	of rich_location::MAX_RANGES to
	rich_location::STATICALLY_ALLOCATED_RANGES.
	* diagnostic.h (struct diagnostic_context): Likewise.

gcc/testsuite/ChangeLog:
	* gcc.dg/plugin/diagnostic-test-show-locus-bw.c
	(test_many_nested_locations): New function.
	* gcc.dg/plugin/diagnostic_plugin_test_show_locus.c
	(test_show_locus): Handle "test_many_nested_locations".

libcpp/ChangeLog:
	* include/line-map.h (class semi_embedded_vec): New class.
	(semi_embedded_vec<T, NUM_EMBEDDED>::semi_embedded_vec): New ctor.
	(semi_embedded_vec<T, NUM_EMBEDDED>::~semi_embedded_vec): New
	dtor.
	(semi_embedded_vec<T, NUM_EMBEDDED>::operator[]): New methods.
	(semi_embedded_vec<T, NUM_EMBEDDED>::push): New method.
	(semi_embedded_vec<T, NUM_EMBEDDED>::truncate): New method.
	(rich_location::get_num_locations): Reimplement in terms of
	m_ranges.
	(rich_location::get_range): Make non-inline.
	(rich_location::get_num_fixit_hints): Reimplement in terms of
	m_fixit_hints.
	(rich_location::add_fixit): New function.
	(rich_location::MAX_RANGES): Rename to...
	(rich_location::STATICALLY_ALLOCATED_RANGES): ...this.
	(rich_location::MAX_FIXIT_HINTS): Rename to...
	(rich_location::STATICALLY_ALLOCATED_RANGES): ...this, and make
	private.
	(rich_location::m_num_ranges): Eliminate in favor of...
	(rich_location::m_ranges): ...this, converting from a fixed-size
	array to a semi_embedded_vec.
	(rich_location::m_num_fixit_hints): Eliminate in favor of...
	(rich_location::m_fixit_hints): ...this, converting from a
	fixed-size array to a semi_embedded_vec.
	* line-map.c (rich_location::rich_location): Update for above
	changes.
	(rich_location::~rich_location): Likewise.
	(rich_location::get_loc): Likewise.
	(rich_location::get_range): New methods.
	(rich_location::add_range): Update for above changes.
	(rich_location::set_range): Likewise.
	(rich_location::add_fixit_insert): Likewise.
	(rich_location::add_fixit_replace): Likewise.
	(rich_location::get_last_fixit_hint): Likewise.
	(rich_location::reject_impossible_fixit): Likewise.
	(rich_location::add_fixit): New method.

From-SVN: r239879

From-SVN: r239878

Split out a new base class for temp_source_file, named_temp_file,
moving the deletion to the base class dtor, so that we can write
out temporary files in other ways in selftests.

gcc/ChangeLog:
	* selftest.c (selftest::named_temp_file::named_temp_file): New
	ctor.
	(selftest::temp_source_file::~temp_source_file): Move to...
	(selftest::named_temp_file::~named_temp_file): ...here.
	(selftest::test_named_temp_file): New function.
	(selftest::selftest_c_tests): Call test_named_temp_file.
	* selftest.h (class named_temp_file): New class.
	(class temp_source_file): Convert to a subclass of named_temp_file.

From-SVN: r239875

gcc/cp/ChangeLog:
	* parser.c (cp_parser_enclosed_template_argument_list): Add fix-it
	hint to ">>" within nested template argument list error.

gcc/testsuite/ChangeLog:
	* g++.dg/template/double-greater-than-fixit.C: New test case.

From-SVN: r239873

    
    Use the new -fgo-c-header option to build a header file for the Go
    runtime code in libgo/go/runtime, and use the new header file in the C
    runtime code in libgo/runtime.  This will ensure that the Go code and C
    code share the same data structures as we convert the runtime from C to
    Go.
    
    The new file libgo/go/runtime/runtime2.go is copied from the Go 1.7
    release, and then edited to remove unnecessary data structures and
    modify others for use with libgo.
    
    The new file libgo/go/runtime/mcache.go is an initial version of the
    same files in the Go 1.7 release, and will be replaced by the Go 1.7
    file when we convert to the new memory allocator.
    
    The new file libgo/go/runtime/type.go describes the gccgo version of the
    reflection data structures, and replaces the Go 1.7 runtime file which
    describes the gc version of those structures.
    
    Using the new header file means changing a number of struct fields to
    use Go naming conventions (that is, no underscores) and to rename
    constants to have a leading underscore so that they are not exported
    from the Go package.  These names were updated in the C code.
    
    The C code was also changed to drop the thread-local variable m, as was
    done some time ago in the gc sources.  Now the m field is always
    accessed using g->m, where g is the single remaining thread-local
    variable.  This in turn required some adjustments to set g->m correctly
    in all cases.
    
    Also pass the new -fgo-compiling-runtime option when compiling the
    runtime package, although that option doesn't do anything yet.
    
    Reviewed-on: https://go-review.googlesource.com/28051

From-SVN: r239872

re PR libstdc++/77395 (std::is_constructible is false for type constructible via implicit conversion operator affecting std::tuple)

	PR libstdc++/77395
	* include/std/type_traits (is_constructible): Forward-declare...
	(__is_base_to_derived_ref): ...and use here.
	* testsuite/20_util/declval/requirements/1_neg.cc: Adjust.
	* testsuite/20_util/is_constructible/77395.cc: New.
	* testsuite/20_util/make_signed/requirements/typedefs_neg.cc: Adjust.
	* testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc:
	Likewise.
	* testsuite/20_util/tuple/77395.cc: New.

From-SVN: r239870

	* testsuite/22_locale/time_get/get/char/2.cc: Move dg-do run
	directive above dg-require-namedlocale directive.
	* testsuite/22_locale/time_get/get/wchar_t/2.cc: Ditto.
	* testsuite/27_io/manipulators/extended/get_time/char/2.cc: Ditto.
	* testsuite/27_io/manipulators/extended/get_time/wchar_t/2.cc: Ditto.
	* testsuite/27_io/manipulators/extended/put_time/char/2.cc: Ditto.
	* testsuite/27_io/manipulators/extended/put_time/wchar_t/2.cc: Ditto.

From-SVN: r239867

The exit block (to which every return artificially jumps) already has
a use of LR.  The LR use in all returns and sibcalls is an anachronism,
probably made unnecessary by the dataflow merge.  The simple_returns
that shrink-wrapping generates also do not have such a use.  Newer
backends do not do this either it seems.

With this use removed, a normal return is no longer a parallel but just
a return insn, and cfgcleanup then can transform conditional jumps to
those into conditional returns.

This splits the return emission code with restoring_FPRs_inline from
that without it; this is simpler code, fewer lines, and less indentation.

The return_internal_<mode> pattern can now be deleted since nothing uses
it anymore.


	* config/rs6000/rs6000.c (rs6000_emit_epilogue): Do not emit
	USEs of LR_REGNO in returns and sibcalls.
	(rs6000_output_mi_thunk): Similar.
	(rs6000_sibcall_aix): Similar.
	* config/rs6000/rs6000.md (sibcall, sibcall_value, sibcall_local32,
	sibcall_local64, sibcall_value_local32, sibcall_value_local64,
	sibcall_nonlocal_sysv<mode>, sibcall_value_nonlocal_sysv<mode>):
	Remove the USE of LR_REGNO from the patterns as well.  Delete an
	obsolete comment.
	(return_internal_<mode>): Delete.

From-SVN: r239866

On behalf of Tamar Christina  <tamar.christina@arm.com>

gcc/

	* gcc/config/aarch64/aarch64-simd.md
	(aarch64_ld2<mode>_dreg_le): New.
	(aarch64_ld2<mode>_dreg_be): New.
	(aarch64_ld2<mode>_dreg): Removed.
	(aarch64_ld3<mode>_dreg_le): New.
	(aarch64_ld3<mode>_dreg_be): New.
	(aarch64_ld3<mode>_dreg): Removed.
	(aarch64_ld4<mode>_dreg_le): New.
	(aarch64_ld4<mode>_dreg_be): New.
	(aarch64_ld4<mode>_dreg): Removed.
	(aarch64_ld<VSTRUCT:nregs><VDC:mode>): Wrapper around _le, _be.

From-SVN: r239865

2016-08-30  Fritz Reese  <fritzoreese@gmail.com>

	* gcc/fortran/gfortran.texi: Fix typo in STRUCTURE documentation.

From-SVN: r239862

Adding a fix-it hint to a diagnostic usually follows one of these
patterns:
(a) an insertion fix-its, with the insertion at the primary caret location
(b) a removals/replacements, affecting the range of the primary location

(other cases are possible, e.g. multiple fix-its, and affecting other
locations, but these are the common ones)

Given these common cases, this patch adds overloads of the rich_location
methods for adding fix-it hints, so that the location information can
be omitted if it matches that of the primary location within the
rich_location.

Similarly when adding "remove" and "replace" fix-it hints to a diagnostic,
it's tedious to have to extract the source_range from a location_t
(aka source_location).  To make this more convenient, this patch
adds overload of the rich_location::add_fixit_remove/replace methods,
accepting a source_location directly.

The patch updates the various in-tree users of fix-it hints to use
the new simpler API where appropriate.  I didn't touch the case where
there are multiple fix-its in one rich_location, as it seems better to
be more explicit about locations for this case (adding a pair of parens
in warn_logical_not_parentheses).

The above makes the gcc_rich_location::add_fixit_misspelled_id overload
taking a const char * rather redundant, so I eliminated it.

gcc/c/ChangeLog:
	* c-decl.c (implicit_decl_warning): Use add_fixit_replace
	rather than add_fixit_misspelled_id.
	(undeclared_variable): Likewise.
	* c-parser.c (c_parser_declaration_or_fndef): Likewise.  Remove
	now-redundant "here" params from add_fixit_insert method calls.
	(c_parser_parameter_declaration): Likewise.
	* c-typeck.c (build_component_ref): Remove now-redundant range
	param from add_fixit_replace method calls.

gcc/cp/ChangeLog:
	* name-lookup.c (suggest_alternatives_for): Use add_fixit_replace
	rather than add_fixit_misspelled_id.
	* parser.c (cp_parser_diagnose_invalid_type_name): Likewise.

gcc/ChangeLog:
	* diagnostic-show-locus.c (test_one_liner_fixit_insert): Remove
	redundant location param.
	(test_one_liner_fixit_remove): Likewise.
	(test_one_liner_fixit_replace): Likewise.
	(test_one_liner_fixit_replace_equal_secondary_range): Likewise.
	* gcc-rich-location.c
	(gcc_rich_location::add_fixit_misspelled_id): Eliminate call to
	get_range_from_loc.  Drop overload taking a const char *.
	* gcc-rich-location.h
	(gcc_rich_location::add_fixit_misspelled_id): Drop overload taking
	a const char *.

libcpp/ChangeLog:
	* include/line-map.h (rich_location::add_fixit_insert): Add
	comments.  Add overload omitting the source_location param.
	(rich_location::add_fixit_remove): Add comments.  Add overloads
	omitting the range, and accepting a source_location.
	(rich_location::add_fixit_replace): Likewise.
	* line-map.c (rich_location::add_fixit_insert): Add comments.  Add
	overload omitting the source_location param.
	(rich_location::add_fixit_remove): Add comments.  Add overloads
	omitting the range, and accepting a source_location.
	(rich_location::add_fixit_replace): Likewise.

From-SVN: r239861

gcc/
	* config/linux.c (linux_libc_has_function): Return true on musl.

From-SVN: r239860

gcc/
	* config.gcc (*-*-*musl*): Disable gnu-indirect-function.

From-SVN: r239859

	* postreload-gcse.c (bb_has_well_behaved_predecessors): Tweak criterion
	used for abnormal egdes.

From-SVN: r239858

2016-08-30  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/69047
	* gcc.dg/pr69047.c: Fix byte-order check.

From-SVN: r239857

	PR tree-optimization/72866
	* tree-vect-patterns.c (search_type_for_mask): Turn into
	a small wrapper, move all code to ...
	(search_type_for_mask_1): ... this new function.  Add caching
	and adjust recursive calls.

	* gcc.dg/vect/pr72866.c: New test.

From-SVN: r239856

	PR debug/77363
	* dwarf2out.c (modified_type_die): Use lookup_type_die (type)
	instead of lookup_type_die (type_main_variant (type)) even for array
	types.

	* g++.dg/debug/dwarf2/pr77363.C: New test.

From-SVN: r239855

	PR middle-end/77377
	* simplify-rtx.c (avoid_constant_pool_reference): For out of bounds
	constant pool reference return x instead of c.

	* gcc.target/i386/pr77377.c: New test.

From-SVN: r239854

re PR debug/77389 (FAIL: g++.dg/debug/dwarf2/template-params-12f.C  -std=gnu++11  scan-assembler-times DIE \\\\([^\\n]*\\\\) DW_TAG_template_value_param ...)

	PR debug/77389
	* g++.dg/debug/dwarf2/template-params-12f.C: Pass -gno-strict-dwarf
	in dg-options.

From-SVN: r239853

    
    The new -fgo-c-header=FILE option will write a C header file defining
    all the struct types and numeric const values in package scope.  This
    will be used when building the Go runtime package (libgo/go/runtime) to
    generate a C header file that may be included by the C code in the C
    runtime package (libgo/runtime).
    
    This will ensure that the Go code and C code are working with the same
    data structures as we convert the runtime from C to Go to upgrade to the
    current GC runtime, notably the concurrent garbage collector.
    
    Reviewed-on: https://go-review.googlesource.com/28000

	* lang.opt (fgo-c-header, fgo-compiling-runtime): New options.
	* go-c.h (struct go_create_gogo_args): Define.
	(go_create_gogo): Change declaration to take struct pointer.
	* go-lang.c (go_c_header): New static variable.
	(go_langhook_init): Update call to go_create_gogo.
	* gccgo.texi (Invoking gccgo): Document -fgo-c-header and
	-fgo-compiling-runtime.

From-SVN: r239852

Nothing uses MQ anymore, but it still shows up in all the dump files.
This patch removes it from CALL_REALLY_USED_REGISTERS so that that does
not happen anymore (it is still a fixed register, there should be no
functional change).


	* config/rs6000/rs6000.h (CALL_REALLY_USED_REGISTERS): Do not
	include MQ.

From-SVN: r239851

From-SVN: r239850

2016-08-29  Steven G. Kargl  <kargl@gcc.gnu.org>

	* gfortran.dg/pr77372.f90: Moved to ...
	* gfortran.dg/ieee/pr77372.f90: here.

From-SVN: r239847

gcc/ChangeLog:
	* input.c
	(selftest::test_make_location_nonpure_range_endpoints): Fix
	header comment.

From-SVN: r239844

Currently the fix-it validator rejects ad-hoc locations.
Fix this by calling get_pure_location on the input locations to
add_fixit_insert/replace.  Doing so requires moving get_pure_location
from gcc to libcpp.

gcc/ChangeLog:
	* diagnostic-show-locus.c
	(selftest::test_one_liner_fixit_validation_adhoc_locations): New
	function.
	(selftest::test_diagnostic_show_locus_one_liner): Call it.
	* input.c (get_pure_location): Move to libcpp/line-map.c.
	* input.h (get_pure_location): Convert decl to an inline function
	calling implementation in libcpp.

libcpp/ChangeLog:
	* include/line-map.h (get_pure_location): New decl.
	* line-map.c (get_pure_location): Move here, from gcc/input.c, adding
	a line_maps * param.
	(rich_location::add_fixit_insert): Call get_pure_location on "where".
	(rich_location::add_fixit_replace): Call get_pure_location on the
	end-points.

From-SVN: r239843

2016-08-29  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* gcc.target/powerpc/vec-init-4.c: New runtime tests for various
	vector short/char initializations.
	* gcc.target/powerpc/vec-init-5.c: Likewise.
	* gcc.target/powerpc/vec-init-6.c: New compile time test for
	vector initialization optimizations.
	* gcc.target/powerpc/vec-init-7.c: Likewise.
	* gcc.target/powerpc/vec-init-8.c: New runtime tests for various
	vector float/double initializations.
	* gcc.target/powerpc/vec-init-9.c: Likewise.

From-SVN: r239837

	* configure.ac (nvptx-*): Hardwire newlib.
	* configure: Rebuilt.

From-SVN: r239836

	PR target/77403
	* config/i386/sse.md (vec_set_lo_<mode><mask_name>): Fix assembler
	template for intel asm dialect.
	(vec_set_hi_<mode><mask_name>): Ditto.

testsuite/ChangeLog:

	PR target/77403
	* gcc.target/i386/pr77403.c: New test.

From-SVN: r239834

	PR c/77292
	* c-common.c (warn_logical_not_parentheses): Don't warn for
	a comparison or a logical operator.

	* c-c++-common/Wlogical-not-parentheses-1.c: New test.

From-SVN: r239833

gcc/ChangeLog:
	* selftest.h (selftest::fail): Add ATTRIBUTE_NORETURN.
	(selftest::fail_formatted): Likewise.

From-SVN: r239832

gcc/ChangeLog:
	* input.c (make_location): Call get_start and get_finish
	on the endpoints to avoid storing packed ranges or ad-hoc
	ranges in them.
	(selftest::test_make_location_nonpure_range_endpoints): New function.
	(selftest::input_c_tests): Call it.
	* input.h (get_start): New inline function.

From-SVN: r239831

	* mangle.c (maybe_check_abi_tags): Add version parm, handle thunks.
	(mangle_thunk): Add thunk parameter.
	* method.c (finish_thunk): Pass it.
	* cp-tree.h: Declare it.

From-SVN: r239830

2016-08-29  Tom de Vries  <tom@codesourcery.com>

	* c-common.c (build_va_arg): Fix type comparison assert.

From-SVN: r239829

2016-08-29  Tom de Vries  <tom@codesourcery.com>

	* c-common.c (build_va_arg): Replace first argument type error
	with assert.

From-SVN: r239828

2016-08-29  Tom de Vries  <tom@codesourcery.com>

	PR c/77398
	* c-common.c (build_va_arg): Add first argument error.  Build va_arg
	with error_mark_node as va_list instead of with illegal va_list.

	* gimplify.c (gimplify_va_arg_expr): Replace first argument type error
	with assert.

	* g++.dg/ext/va-arg1.C: Add error check for illegal first argument.

From-SVN: r239827

From-SVN: r239823

From-SVN: r239821

From-SVN: r239820

2016-08-29  Fritz Reese  <fritzoreese@gmail.com>

	Fix, reorganize, and clarify comparisons of anonymous types/components.

	PR fortran/77327
	* interface.c (is_anonymous_component, is_anonymous_dt): New functions.
	* interface.c (compare_components, gfc_compare_derived_types): Use new
	functions.

	* gfortran.dg/dec_structure_13.f90: New testcase.

From-SVN: r239819

From-SVN: r239817