Previously, the tentative parses for optional type-specifier and to support
class template argument deduction were combined awkwardly.  This
reorganization was motivated by the new concepts branch.

	* parser.c (cp_parser_simple_type_specifier): Separate tentative
	parses for optional type-spec and CTAD.

From-SVN: r273514

On the concepts branch I ran into trouble where a pre-parsed dependent
nested-name-specifier got replaced on a subsequent parse with is_declaration
by one with typenames resolved, which was then used wrongly on a further
parse with !is_declaration.

    * parser.c (cp_parser_nested_name_specifier_opt): If the token is
    already CPP_NESTED_NAME_SPECIFIER, leave it alone.

From-SVN: r273513

This patch reports an error if the .md file has an unscoped
attribute that maps to more than one possible value.

2019-07-16  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* read-md.h (md_reader::record_potential_iterator_use): Add a
	file_location parameter.
	* read-rtl.c (attribute_use::loc): New field.
	(map_attr_string): Take a file_location parameter.  Report cases
	in which attributes map to multiple distinct values.
	(apply_attribute_uses): Update call accordingly.
	(md_reader::handle_overloaded_name): Likewise.
	(md_reader::apply_iterator_to_string): Likewise.  Skip empty
	nonnull strings.
	(record_attribute_use): Take a file_location parameter.
	Initialize attribute_use::loc.
	(md_reader::record_potential_iterator_use): Take a file_location
	parameter.  Update call to record_attribute_use.
	(rtx_reader::rtx_alloc_for_name): Update call accordingly.
	(rtx_reader::read_rtx_code): Likewise.
	(rtx_reader::read_rtx_operand): Likewise.  Record a location
	for implicitly-expanded empty strings.

From-SVN: r273511

Also make it public, so that clients can use the location for error
reporting.

2019-07-16  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* read-md.h (md_reader::ptr_loc): Moved from read-md.c.
	Use file_location instead of separate fields.
	(md_reader::set_md_ptr_loc): Take a file_location instead of a
	separate filename and line number.
	* read-md.c (ptr_loc): As above.
	(md_reader::copy_md_ptr_loc): Update for new ptr_loc layout.
	(md_reader::fprint_md_ptr_loc): Likewise.
	(md_reader::set_md_ptr_loc): Likewise.  Take a file_location
	instead of a separate filename and line number.
	(md_reader::read_string): Update call accordingly.

From-SVN: r273510

This patch is part of a series that fixes ambiguous attribute
uses in .md files, i.e. cases in which attributes didn't use
<ITER:ATTR> to specify an iterator, and in which <ATTR> could
have different values depending on the iterator chosen.

No behavioural change -- produces the same code as before except
for formatting and line numbers.

2019-07-16  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* config/rs6000/rs6000.md (*mov<mode>_update1): Explicitly
	use <SFDF:mode>, <SFDF:MODE>, <SFDF:Ff> and <SFDF:bits> rather than
	leaving the choice between SFDF and P implicit.
	(*mov<mode>_update2): Likewise.
	(*cmp<IBM128:mode>_internal2): Explicitly use <IBM128:MODE>
	rather than leaving the choice betweem IBM128 and GPR implicit.
	(*fix<uns>_trunc<IEEE128:mode><QHSI:mode>2_mem): Explicitly use
	<IEEE128:MODE> rather than leaving the choice between IEEE128 and
	QHSI implicit.
	(AltiVec define_peephole2s): Explicitly use <ALTIVEC_DFORM:MODE>
	rather than leaving the choice between ALTIVEC_DFORM and P implicit.
	* config/rs6000/vsx.md
	(*vsx_ext_<VSX_EXTRACT_I:VS_scalar>_fl_<FL_CONV:mode>)
	(*vsx_ext_<VSX_EXTRACT_I:VS_scalar>_ufl_<FL_CONV:mode>): Explicitly
	use <FL_CONV:VSisa> rather than leaving the choice between FL_CONV
	and VSX_EXTRACT_I implicit.

From-SVN: r273509

This patch is part of a series that fixes ambiguous attribute
uses in .md files, i.e. cases in which attributes didn't use
<ITER:ATTR> to specify an iterator, and in which <ATTR> could
have different values depending on the iterator chosen.

No behavioural change -- produces the same code as before.

2019-07-16  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* config/mips/micromips.md (*movep<MOVEP1:mode><MOVEP2:mode>):
	Explicitly use <MOVEP1:MODE> for the mode attribute.

From-SVN: r273508

Apply Honza's fix for an aarch64-linux-gnu bootstrap failure.

2019-07-16  Jan Hubicka  <hubicka@ucw.cz>

gcc/
	PR bootstrap/91176
	* ipa-fnsummary.c (analyze_function_body): Skip debug stmts

From-SVN: r273507

From-SVN: r273506

From-SVN: r273505

From-SVN: r273501

    
    Currently, getg is implemented in C, which loads the thread-local
    g variable. The g variable is declared static in C.
    
    This CL exposes the g variable, so it can be accessed from the Go
    side. This allows the Go compiler to inline getg calls to direct
    access of g.
    
    Currently, the actual inlining is only implemented in the gollvm
    compiler. The g variable is thread-local and the compiler backend
    may choose to cache the TLS address in a register or on stack. If
    a thread switch happens the cache may become invalid. I don't
    know how to disable the TLS address cache in gccgo, therefore
    the inlining of getg is not implemented. In the future gccgo may
    gain this if we know how to do it safely.
    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/186238

From-SVN: r273499

We now can always output .machine (if we output it at all for the
current target).


	PR target/91050
	* config/rs6000/rs6000.c (rs6000_file_start): Never skip emitting a
	.machine directive.

From-SVN: r273498

	* config/i386/i386.md (@test<mode>_ccno_1):
	Rename from test<mode>_ccno_1.
	(*testdi_1): Remove redundant alternatives.  Remove modrm attribute.
	(*testqi_1_maybe_si): Remove modrm attribute.
	(*test<mode>_1): Ditto.
	* config/i386/i386-expand.c (ix86_split_idivmod): Use
	gen_test_ccno_1 and gen_extend_insn.

From-SVN: r273496

	* tree-ssa-alias.c (aliasing_component_refs_walk): Initialize same_p
	to 0.

From-SVN: r273495

re PR tree-optimization/91162 (ICE: tree check: expected class 'type', have 'exceptional' (error_mark) in useless_type_conversion_p, at gimple-expr.c:86 (error: invalid 'PHI' argument))

2019-07-15  Richard Biener  <rguenther@suse.de>

	PR middle-end/91162
	* tree-cfg.c (move_block_to_fn): When releasing a virtual PHI
	node make sure to replace all uses with something valid.

	* gcc.dg/autopar/pr91162.c: New testcase.

From-SVN: r273492

gcc/ChangeLog

2019-07-15  Kewen Lin  <linkw@gcc.gnu.org>

    PR tree-optimization/88497
    * tree-ssa-reassoc.c (reassociate_bb): Swap the positions of
    GIMPLE_BINARY_RHS check and gimple_visited_p check, call new
    function undistribute_bitref_for_vector.
    (undistribute_bitref_for_vector): New function.
    (cleanup_vinfo_map): Likewise.
    (sort_by_mach_mode): Likewise.

gcc/testsuite/ChangeLog

2019-07-15  Kewen Lin  <linkw@gcc.gnu.org>

    PR tree-optimization/88497
    * gcc.dg/tree-ssa/pr88497-1.c: New test.
    * gcc.dg/tree-ssa/pr88497-2.c: Likewise.
    * gcc.dg/tree-ssa/pr88497-3.c: Likewise.
    * gcc.dg/tree-ssa/pr88497-4.c: Likewise.
    * gcc.dg/tree-ssa/pr88497-5.c: Likewise.
    * gcc.dg/tree-ssa/pr88497-6.c: Likewise.
    * gcc.dg/tree-ssa/pr88497-7.c: Likewise.

From-SVN: r273490

From-SVN: r273488

2019-07-14  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/87233
	* expr.c (check_restricted): Relax constraint C1279 which was
	removed from F2008 and above.

	* gfortran.dg/initialization_14.f90: Modify to now pass by
	removing two dg-error commands. Added comments.
	* gfortran.dg/initialization_30.f90: New test that includes the
	two tests removed above with the 'dg-options -std=f95'.

From-SVN: r273484

	* gcc.dg/tree-ssa/pr84512.c (dg-final): Remove XFAIL on alpha*-*-*.

From-SVN: r273483

	* config/i386/i386.md (nonmemory_szext_operand): New mode attribute.
	(test<mode>_ccno_1): Macroize insn pattern from testsi_ccno_1
	and testdi_ccno_1 using SWI48 mode attribute.
	(*testdi_1): Use x86_64_szext_nonmemory_operand instead of
	x86_64_szext_general_operand.
	(*testqi_1_maybe_si): Use nonmemory_operand instead of general_operand.
	(*test<mode>_1): Use nonmemory_szext_operand mode attribute
	instead of genera_operand mode attribute.

From-SVN: r273482

Work around the following

    (gdb) Python Exception <class 'gdb.error'> 'fclose@@GLIBC_2.2.5' has
    unknown return type; cast the call to its declared return type:
    (gdb) Error occurred in Python: 'fclose@@GLIBC_2.2.5' has unknown
    return type; cast the call to its declared return type

This is due to GDB not being able to pick up and use the return types from
debug info for external declarations.

2019-07-14  Vladislav Ivanishin <vlad@ispras.ru>

        * gdbhooks.py (DumpFn.invoke): Add explicit casts of return values of
        fopen and fclose to their respective types.
        (DotFn.invoke): Ditto.

From-SVN: r273480

	* ipa-fnsummary.c (ipa_dump_hints): Do not dump array_index.
	(ipa_fn_summary::~ipa_fn_summary): Do not destroy array_index.
	(ipa_fn_summary_t::duplicate): Do not duplicate array_index.
	(array_index_predicate): Remove.
	(analyze_function_body): Account cost for variable ofsetted array
	indexing.
	(estimate_node_size_and_time): Do not compute array index hint.
	(ipa_merge_fn_summary_after_inlining): Do not merge array index hint.
	(inline_read_section): Do not read array index hint.
	(ipa_fn_summary_write): Do not write array index hint.
	* doc/invoke.texi (ipa-cp-array-index-hint-bonus): Remove.
	* ipa-cp.c (hint_time_bonus): Remove.
	* ipa-fnsummary.h (ipa_hints_vals): Remove array_index.
	(ipa_fnsummary): Remove array_index.
	* ipa-inline.c (want_inline_small_function_p): Do not use
	array_index.
	(edge_badness): Likewise.
	* params.def (PARAM_IPA_CP_ARRAY_INDEX_HINT_BONUS): Remove.

From-SVN: r273479

	PR target/91148
	* config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin): Remove
	superfluous "builtin function" phrasing.

gcc/testsuite/
	* gcc.target/powerpc/bfp/scalar-extract-exp-2.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-extract-sig-2.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-insert-exp-2.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-insert-exp-5.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-insert-exp-8.c: Adjust.
	* gcc.target/powerpc/byte-in-set-2.c: Adjust.
	* gcc.target/powerpc/cmpb-3.c: Adjust.
	* gcc.target/powerpc/vsu/vec-all-nez-7.c: Adjust.
	* gcc.target/powerpc/vsu/vec-any-eqz-7.c: Adjust.
	* gcc.target/powerpc/vsu/vec-xl-len-13.c: Adjust.
	* gcc.target/powerpc/vsu/vec-xst-len-12.c: Adjust.

From-SVN: r273475

From-SVN: r273474

The test fails if the assembler doesn't support stabs.

2019-07-13  Iain Sandoe  <iain@sandoe.co.uk>

	* gcc.target/powerpc/stabs-attrib-vect-darwin.c: Require stabs
	support.

From-SVN: r273470

	* tree-ssa-alias.c (component_ref_to_zero_sized_trailing_array_p):
	Break out from ...
	(aliasing_component_refs_walk): Break out from ...
	(aliasing_component_refs_p): ... here.

From-SVN: r273469

We currently get lot of build warnings like
/home/segher/src/gcc/gcc/config/rs6000/rs6000-c.c:7039:12: warning: misspelled term 'builtin function' in format; use 'built-in function' instead [-Wformat-diag]
 7039 |    error ("builtin function %qs not supported in this compiler "
      |            ^~~~~~~~~~~~~~~~

That would print something like
  builtin function '__builtin_example' not supported in this compiler

Changing that to "built-in" as suggested only makes this worse.
Instead, let's just remove the whole "builtin function" phrase.


	PR target/91148
	* config/rs6000/rs6000.c (rs6000_invalid_builtin): Remove superfluous
	"builtin function" phrasing.

gcc/testsuite/
	* gcc.target/powerpc/bfp/scalar-cmp-exp-eq-2.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-cmp-exp-gt-2.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-cmp-exp-lt-2.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-cmp-exp-unordered-2.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-extract-exp-1.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-extract-exp-2.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-extract-exp-4.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-extract-sig-1.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-extract-sig-2.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-extract-sig-4.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-insert-exp-1.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-insert-exp-10.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-insert-exp-2.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-insert-exp-4.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-insert-exp-5.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-insert-exp-7.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-insert-exp-8.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-test-data-class-11.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-test-data-class-6.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-test-data-class-7.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-test-neg-2.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-test-neg-3.c: Adjust.
	* gcc.target/powerpc/bfp/scalar-test-neg-5.c: Adjust.
	* gcc.target/powerpc/bfp/vec-extract-exp-2.c: Adjust.
	* gcc.target/powerpc/bfp/vec-extract-exp-3.c: Adjust.
	* gcc.target/powerpc/bfp/vec-extract-sig-2.c: Adjust.
	* gcc.target/powerpc/bfp/vec-extract-sig-3.c: Adjust.
	* gcc.target/powerpc/bfp/vec-insert-exp-2.c: Adjust.
	* gcc.target/powerpc/bfp/vec-insert-exp-3.c: Adjust.
	* gcc.target/powerpc/bfp/vec-insert-exp-6.c: Adjust.
	* gcc.target/powerpc/bfp/vec-insert-exp-7.c: Adjust.
	* gcc.target/powerpc/bfp/vec-test-data-class-2.c: Adjust.
	* gcc.target/powerpc/bfp/vec-test-data-class-3.c: Adjust.
	* gcc.target/powerpc/byte-in-either-range-1.c: Adjust.
	* gcc.target/powerpc/byte-in-range-1.c: Adjust.
	* gcc.target/powerpc/byte-in-set-1.c: Adjust.
	* gcc.target/powerpc/byte-in-set-2.c: Adjust.
	* gcc.target/powerpc/cmpb-3.c: Adjust.
	* gcc.target/powerpc/crypto-builtin-2.c: Adjust.
	* gcc.target/powerpc/dfp/dtstsfi-1.c: Adjust.
	* gcc.target/powerpc/dfp/dtstsfi-11.c: Adjust.
	* gcc.target/powerpc/dfp/dtstsfi-16.c: Adjust.
	* gcc.target/powerpc/dfp/dtstsfi-21.c: Adjust.
	* gcc.target/powerpc/dfp/dtstsfi-26.c: Adjust.
	* gcc.target/powerpc/dfp/dtstsfi-31.c: Adjust.
	* gcc.target/powerpc/dfp/dtstsfi-36.c: Adjust.
	* gcc.target/powerpc/dfp/dtstsfi-41.c: Adjust.
	* gcc.target/powerpc/dfp/dtstsfi-46.c: Adjust.
	* gcc.target/powerpc/dfp/dtstsfi-51.c: Adjust.
	* gcc.target/powerpc/dfp/dtstsfi-56.c: Adjust.
	* gcc.target/powerpc/dfp/dtstsfi-6.c: Adjust.
	* gcc.target/powerpc/dfp/dtstsfi-61.c: Adjust.
	* gcc.target/powerpc/dfp/dtstsfi-66.c: Adjust.
	* gcc.target/powerpc/dfp/dtstsfi-71.c: Adjust.
	* gcc.target/powerpc/dfp/dtstsfi-76.c: Adjust.
	* gcc.target/powerpc/vsu/vec-all-nez-7.c: Adjust.
	* gcc.target/powerpc/vsu/vec-any-eqz-7.c: Adjust.
	* gcc.target/powerpc/vsu/vec-cmpnez-7.c: Adjust.
	* gcc.target/powerpc/vsu/vec-cntlz-lsbb-2.c: Adjust.
	* gcc.target/powerpc/vsu/vec-cnttz-lsbb-2.c: Adjust.
	* gcc.target/powerpc/vsu/vec-xl-len-12.c: Adjust.
	* gcc.target/powerpc/vsu/vec-xl-len-13.c: Adjust.
	* gcc.target/powerpc/vsu/vec-xlx-7.c: Adjust.
	* gcc.target/powerpc/vsu/vec-xrx-7.c: Adjust.
	* gcc.target/powerpc/vsu/vec-xst-len-12.c: Adjust.
	* gcc.target/powerpc/vsu/vec-xst-len-13.c: Adjust.

From-SVN: r273468

From-SVN: r273467

2019-07-15  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

	PR target/90723
	* recog.h (temporary_volatile_ok): New class.
	* config/aarch64/aarch64.c (aarch64_emit_sve_pred_move): Set
	volatile_ok temporarily to true using temporary_volatile_ok.
	* expr.c (emit_block_move_via_cpymem): Likewise.
	* optabs.c (maybe_legitimize_operand): Likewise.

From-SVN: r273466

re PR c/91149 (GCC 9 and later incorrectly rejects OpenMP task reduction-modifier on target parallel combined construct)

	PR c/91149
	* c-omp.c (c_omp_split_clauses): Fix a pasto in
	OMP_CLAUSE_REDUCTION_TASK handling.

	* c-c++-common/gomp/reduction-task-3.c: New test.

From-SVN: r273465

	* gimplify.c (struct gimplify_omp_ctx): Add order_concurrent member.
	(omp_notice_threadprivate_variable): Diagnose threadprivate variable
	uses inside of order(concurrent) constructs.
	(gimplify_scan_omp_clauses): Set ctx->order_concurrent if
	OMP_CLAUSE_ORDER is seen.
	* omp-low.c (struct omp_context): Add order_concurrent member.
	(scan_sharing_clauses): Set ctx->order_concurrent if
	OMP_CLAUSE_ORDER is seen.
	(check_omp_nesting_restrictions): Diagnose ordered or atomic inside
	of simd order(concurrent).  Diagnose constructs not allowed inside of
	for order(concurrent).
	(setjmp_or_longjmp_p): Add a context and TREE_PUBLIC check to avoid
	complaining about static double setjmp (double); or class static
	methods or non-global namespace setjmps.
	(omp_runtime_api_call): New function.
	(scan_omp_1_stmt): Diagnose OpenMP runtime API calls inside of
	order(concurrent) loops.

	* c-c++-common/gomp/order-3.c: New test.
	* c-c++-common/gomp/order-4.c: New test.

From-SVN: r273464

From-SVN: r273463

The test case has a typo in the big endian section that reversed two digits.

Fix committed as obvious.


2019-07-12  Bill Seurer  <seurer@linux.vnet.ibm.com>

	* gcc.dg/tree-ssa/vector-7.c: Fix typo.

From-SVN: r273459

During GCC-9, the codegen for unreachable switch case statements changed
such that the (undefined) behaviour of reaching such statements is directed
to one of the existing switch cases.  This means that the testcase which
deals with the old behaviour can no longer work (and there is nothing to test
with it).  The [Darwin-specific] test is now redundant and can be removed.

gcc/testsuite/

2019-07-12  Iain Sandoe  <iain@sandoe.co.uk>

	* gcc.dg/pr57438-2.c: Remove.

From-SVN: r273457

gcc/ChangeLog:

	* doc/invoke.texi (ssa-name-def-chain-limit): Document new --param.
	* params.def (PARAM_SSA_NAME_DEF_CHAIN_LIMIT): Add new --param.
	* tree-vrp.c (vrp_prop::check_mem_ref): Use
	PARAM_SSA_NAME_DEF_CHAIN_LIMIT.

gcc/testsuite/ChangeLog:

	* gcc.dg/Warray-bounds-43.c: New test.

From-SVN: r273454

	* tree-ssa-alias.c (same_tmr_indexing_p): Break out from ...
	(indirect_refs_may_alias_p): ... here.
	(nonoverlapping_component_refs_since_match_p): Support also non-trivial
	mem refs in the access paths.

	* gcc.dg/tree-ssa/alias-access-path-9.c: New testcase.

From-SVN: r273451

2019-07-12  Jiangning Liu  <jiangning.liu@amperecomputing.com>

	PR tree-optimization/89430
	* tree-ssa-phiopt.c (cond_store_replacement): Support conditional
	store elimination for local variable without address escape.

	PR tree-optimization/89430
	* gcc.dg/tree-ssa/pr89430-1.c: New test.
	* gcc.dg/tree-ssa/pr89430-2.c: New test.
	* gcc.dg/tree-ssa/pr89430-3.c: New test.
	* gcc.dg/tree-ssa/pr89430-4.c: New test.
	* gcc.dg/tree-ssa/pr89430-5.c: New test.
	* gcc.dg/tree-ssa/pr89430-6.c: New test.

From-SVN: r273449

	* testsuite/29_atomics/atomic_float/1.cc: Fix comment.

From-SVN: r273448

	* config/c6x/c6x.c (c6x_section_type): Clear SECTION_NOTYPE
	for the ".far" section.

From-SVN: r273447

re PR tree-optimization/91145 (ICE: in vect_build_slp_tree_2, at tree-vect-slp.c:1143 with -march=skylake-avx512 -O3)

2019-07-12  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/91145
	* tree-vect-slp.c (vect_build_slp_tree_2): Fix reduction
	chain check.

	* gcc.dg/torture/pr91145.c: New testcase.

From-SVN: r273445