As suggested by Richard B., this patch reorders the arguments to
vect_is_simple_use so that def_stmt comes last and is optional.
Many callers can then drop it, making it more obvious which of
the remaining calls would be affected by the next patch.

2018-06-30  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* tree-vectorizer.h (vect_is_simple_use): Move the gimple ** to the
	end and default to null.
	* tree-vect-loop.c (vect_create_epilog_for_reduction)
	(vectorizable_reduction): Update calls accordingly, dropping the
	gimple ** argument if the passed-back statement isn't needed.
	* tree-vect-patterns.c (vect_get_internal_def, type_conversion_p)
	(vect_recog_rotate_pattern): Likewise.
	(vect_recog_mask_conversion_pattern): Likewise.
	* tree-vect-slp.c (vect_get_and_check_slp_defs): Likewise.
	(vect_mask_constant_operand_p): Likewise.
	* tree-vect-stmts.c (is_simple_and_all_uses_invariant, process_use):
	(vect_model_simple_cost, vect_get_vec_def_for_operand): Likewise.
	(get_group_load_store_type, get_load_store_type): Likewise.
	(vect_check_load_store_mask, vect_check_store_rhs): Likewise.
	(vectorizable_call, vectorizable_simd_clone_call): Likewise.
	(vectorizable_conversion, vectorizable_assignment): Likewise.
	(vectorizable_shift, vectorizable_operation): Likewise.
	(vectorizable_store, vect_is_simple_cond): Likewise.
	(vectorizable_condition, vectorizable_comparison): Likewise.
	(get_same_sized_vectype, vect_get_mask_type_for_stmt): Likewise.
	(vect_is_simple_use): Rename the def_stmt argument to def_stmt_out
	and move it to the end.  Cope with null def_stmt_outs.

From-SVN: r262272

        * Makefile.in (FLAGS_TO_PASS): Add RANLIB_FOR_TARGET.

From-SVN: r262271

2018-06-30  Tom de Vries  <tdevries@suse.de>

	* gcc.dg/guality/guality.exp (guality_transform_options): New proc.
	(toplevel): Apply guality_transform_options on DG_TORTURE_OPTIONS and
	LTO_TORTURE_OPTIONS.
	* gcc.dg/guality/prevent-optimization.h: New file.
	* gcc.dg/guality/pr45882.c: Include prevent-optimization.h.
	(a): Replace __attribute__((used)) with ATTRIBUTE_USED.

From-SVN: r262270

2018-06-30  Tom de Vries  <tdevries@suse.de>

	* gcc.dg/guality/pr45882.c (foo): Use relative line numbers.
	* lib/gcc-dg.exp (dg-final): New proc.
	* lib/gcc-gdb-test.exp (gdb-test): Add and handle additional line number
	argument.

From-SVN: r262269

This patch turns dependencies of non-bootstrap targets on bootstrap
targets for bootstrap builds into dependencies on stage_last.  This
arrangement gets stage1-bubble to run from stage_last if we haven't
started a bootstrap yet, and to use the current stage otherwise.  This
was already the case of target libs, just not of non-bootstrapped host
modules.

In order to retain preexisting dependencies in non-bootstrap builds,
or in gcc-less builds, this introduces support for @unless/@endunless
pairs in Makefile.in.

There is a remaining possibility of problem if activating, in a tree
configured for bootstrap, a parallel build of two or more modules, at
least one bootstrapped and one not.  In this case, make might decide
to build stage_current and stage_last in parallel, the latter will
start a submake to build stage1 while the initial make, having
satisfied stage_current, proceeds to build the bootstrapped module in
non-bootstrapped configurations.  The two builds will overlap and will
likely conflict.  This situation does NOT arise in normal settings,
however: a post-bootstrap build of all-host all-target will indeed
activate such targets concurrently, but only after building all
bootstrapped modules successfully, and it will have both stage_last
and stage_current targets already satisfied, so the potential race
between builds will not arise.

Another remaining problem, that is slightly expanded with this patch,
is that of an interrupted build in a tree configured for bootstrap,
continued with a non-bootstrapped target.  Target modules that were
not bootstrapped would already fail to complete the current stage when
activated explicitly in the command line for a retry; host modules,
however, would attempt to build their bootstrapped dependencies, which
is what led to the problem of concurrent builds addressed with this
patch.  An interrupted or failed build might still recover correctly,
if the non-bootstrapped target is activated in both builds, because
then make will remove stage_last when its build command is
interrupted, so that it will attempt to recreate it with stage1-bubble
in the second try.  A bootstrap build, however, will not be attempting
to build stage_last, so the file will remain and the retry won't go
through stage1-bubble.  We have lived with that for target modules, so
we can probably live with that for host modules too.

Another undesirable consequence of this change is that non-boostrapped
host modules, in a tree configured for bootstrap, when activated as
make all-<module>, will build all of stage1 instead of only the
module's usual dependencies.  This is intentional and necessary to fix
the parallel-build problem.  If it's not desirable, disabling the
unnecessary bootstrap configuration will suffice to restore the
original set of dependencies.


for  ChangeLog

	* configure.ac: Introduce support for @unless/@endunless.
	* Makefile.tpl (dep-kind): Rewrite with cond; return
	postbootstrap in some cases.
	(make-postboot-dep, postboot-targets): New.
	(dependencies): Do not output postbootstrap dependencies at
	first.  Output non-target ones changed for configure to depend
	on stage_last @if gcc-bootstrap, and the original deps @unless
	gcc-bootstrap.
	* configure.in, Makefile.in: Rebuilt.

From-SVN: r262267

From-SVN: r262266

	* config/v850/v850.c (v850_legitimate_address_p): Handle large
	displacements for TARGET_V850E2V3 and newer.
	(TARGET_LRA_P): Remove.  Defaults to LRA now.
	* config/v850/v850.md (sign23byte_load): Remove.
	(unsign23byte_load, sign23hword_load, unsign23hword_load): Likewise.
	(23word_load, 23byte_store, 23hword_store, 23word_store): Likewise.

From-SVN: r262257

gcc/testsuite/ChangeLog:

	* gcc.dg/strlenopt-46.c: Define strnlen for targets like Solaris 10
	that don't define the function.

From-SVN: r262255

re PR c++/86184 (Conditional expression with omitted operand cannot use rvalue of type convertible to bool)

	PR c++/86184
	* tree.c (cp_save_expr): Don't call save_expr for TARGET_EXPRs.

	* g++.dg/ext/cond3.C: New test.

From-SVN: r262254

2018-06-29  Martin Liska  <mliska@suse.cz>

	PR lto/85759
	* coverage.c (coverage_init): Mangle full path name.
	* doc/invoke.texi: Document the change.
	* gcov-io.c (mangle_path): New.
	* gcov-io.h (mangle_path): Likewise.
	* gcov.c (mangle_name): Use mangle_path for path mangling.

From-SVN: r262251

In this testcase the user forces an odd register as the starting reg for a DFmode value.
The output_move_double function tries to store that using an STRD instruction.
But for TARGET_ARM the starting register of an STRD must be an even one.
This is always the case with compiler-allocated registers for DFmode values, but the
inline assembly forced our hand here.

This patch  restricts the STRD-emitting logic in output_move_double to not avoid
odd-numbered source registers in STRD.
I'm not a fan of the whole function, we should be exposing a lot of the logic in there
to RTL rather than at the final output stage, but that would need to be fixed separately.

	* config/arm/arm.c (output_move_double): Don't allow STRD instructions
	if starting source register is not even.

	* gcc.target/arm/arm-soft-strd-even.c: New test.

From-SVN: r262250

	* vim-gcc-dev/README: New file.
	* vim-gcc-dev/ftdetect/gcc-dev.vim: New file.
	* vim-gcc-dev/syntax/gcc-match.vim: New file.
	* gimple.vim: Move under vim-gcc-dev/syntax/.
	* gcc-rtl.vim: Likewise.

From-SVN: r262249

2018-06-29  Tom de Vries  <tdevries@suse.de>

	* gcc.dg/guality/pr45882.c (foo): Add line number var for breakpoint
	line, and use it.
	* lib/gcc-dg.exp (get-absolute-line): Factor out of ...
	(process-message): ... here.
	* lib/gcc-gdb-test.exp (gdb-test): Use get-absolute-line.

From-SVN: r262248

2018-06-29  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/86263
	* tree-switch-conversion.c (switch_decision_tree::try_switch_expansion):
        Make edge redirection.
2018-06-29  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/86263
	* gcc.dg/tree-ssa/pr86263.c: New test.

From-SVN: r262247

This patch adds a concept of nested "scopes" to dumpfile.c's dump_*_loc
calls, and wires it up to the DUMP_VECT_SCOPE macro in tree-vectorizer.h,
so that the nested structure is shown in -fopt-info by indentation.

For example, this converts -fopt-info-all e.g. from:

test.c:8:3: note: === analyzing loop ===
test.c:8:3: note: === analyze_loop_nest ===
test.c:8:3: note: === vect_analyze_loop_form ===
test.c:8:3: note: === get_loop_niters ===
test.c:8:3: note: symbolic number of iterations is (unsigned int) n_9(D)
test.c:8:3: note: not vectorized: loop contains function calls or data references that cannot be analyzed
test.c:8:3: note: vectorized 0 loops in function

to:

test.c:8:3: note: === analyzing loop ===
test.c:8:3: note:  === analyze_loop_nest ===
test.c:8:3: note:   === vect_analyze_loop_form ===
test.c:8:3: note:    === get_loop_niters ===
test.c:8:3: note:   symbolic number of iterations is (unsigned int) n_9(D)
test.c:8:3: note:   not vectorized: loop contains function calls or data references that cannot be analyzed
test.c:8:3: note: vectorized 0 loops in function

showing that the "symbolic number of iterations" message is within
the "=== analyze_loop_nest ===" (and not within the
"=== vect_analyze_loop_form ===").

This is also enabling work for followups involving optimization records
(allowing the records to directly capture the nested structure of the
dump messages).

gcc/ChangeLog:
	* dumpfile.c (dump_loc): Add indentation based on scope depth.
	(dump_scope_depth): New variable.
	(get_dump_scope_depth): New function.
	(dump_begin_scope): New function.
	(dump_end_scope): New function.
	* dumpfile.h (get_dump_scope_depth): New declaration.
	(dump_begin_scope): New declaration.
	(dump_end_scope): New declaration.
	(class auto_dump_scope): New class.
	(AUTO_DUMP_SCOPE): New macro.
	* tree-vectorizer.h (DUMP_VECT_SCOPE): Reimplement in terms of
	AUTO_DUMP_SCOPE.

From-SVN: r262246

	* testsuite/20_util/add_rvalue_reference/requirements/alias_decl.cc:
	Add whitespace to dejagnu directive.
	* testsuite/23_containers/array/element_access/at_neg.cc: Likewise.

From-SVN: r262245

2018-06-29  Richard Biener  <rguenther@suse.de>

	* tree-vect-data-refs.c (vect_analyze_data_ref_dependences): Assert
	compute_all_dependences succeeds.
	* tree-vect-loop.c (vect_get_datarefs_in_loop): Fail early if we
	exceed --param loop-max-datarefs-for-datadeps.

From-SVN: r262244

From-SVN: r262241

From-SVN: r262240

    
    Noticed in https://gcc.gnu.org/PR86331.
    
    Reviewed-on: https://go-review.googlesource.com/121417

From-SVN: r262234

gcc/cp/ChangeLog:
	* parser.c (cp_parser_error_1): After issuing a conflict marker
	error, consume tokens until the end of the source line.

gcc/testsuite/ChangeLog:
	* g++.dg/conflict-markers-2.C: New test.

From-SVN: r262232

	* decl2.c (cp_warn_deprecated_use): Don't warn about declarations
	in system headers.

From-SVN: r262231

gcc/testsuite/ChangeLog:

2018-06-28  Carl Love  <cel@us.ibm.com>

	* gcc.target/p9-extract-1.c: Add test case.
	* gcc.target/builtins-3-p9-runnable.c: Add test case to match
	name in ABI.

From-SVN: r262230

re PR target/86348 (ICE: in curr_insn_transform, at lra-constraints.c:3919: unable to generate reloads for: vec_extractv4si_0_zext_sse4)

	PR target/86348
	* config/i386/sse.md (*vec_extractv4si_0_zext_sse4): Use
	alternative 0 in preferred_for_speed attribute.

testsuite/ChangeLog:

	PR target/86348
	* gcc.target/i386/pr86348.c: New test.

From-SVN: r262228

	* config/pdp11/pdp11-protos.h (pdp11_shift_length): New function.
	* config/pdp11/pdp11.c (pdp11_shift_length): New function.
	* config/pdp11/pdp11.h (ADJUST_INSN_LENGTH): Remove.
	* config/pdp11/pdp11.md: Correct "length" attribute calculation
	for shift insn patterns.

From-SVN: r262227

	PR go/86343
	* go-gcc.cc (Gcc_backend::set_placeholder_struct_type): Call
	build_variant_type_copy rather than build_distinct_type_copy.

From-SVN: r262225

Fix and simplify the testcase so it generates dup even on latest trunk.

    testsuite/
	* gcc.target/aarch64/f16_mov_immediate_3.c: Fix testcase.

From-SVN: r262222

2018-06-28  Fritz Reese  <fritzoreese@gmail.com>

    gcc/fortran/ChangeLog:

	PR fortran/82865
	* decl.c (gfc_match_type): Refactor and check for PDT declarations.

    gcc/testsuite/ChangeLog:

	PR fortran/82865
	* gfortran.dg/dec_type_print_2.f03: New testcase.

From-SVN: r262221

This patch removes alt_dump_file from dumpfile.h, making it static
within dumpfile.c.  This allows for changing how -fopt-info is
implemented, and potentially adding other kinds of dump target, such
as remarks or optimization records.

Doing so requires changing the implementation of dump_enabled_p, so
the patch changes this to a simple lookup of a boolean global, which
is updated any time dump_file or alt_dump_file change.

gcc/ChangeLog:
	* cgraph.c (cgraph_node::get_body): Replace assignments to
	"dump_file" with calls to set_dump_file.
	* dumpfile.c (alt_dump_file): Make static, and group with...
	(alt_flags): ...this definition.
	(dumps_are_enabled): New variable.
	(refresh_dumps_are_enabled): New function.
	(set_dump_file): New function.
	(set_alt_dump_file): New function.
	(gcc::dump_manager::dump_start): Replace assignments to
	"dump_file" and "alt_dump_file" with calls to set_dump_file and
	set_alt_dump_file.
	(gcc::dump_manager::dump_finish): Likewise.
	* dumpfile.h (alt_dump_file): Delete decl.
	(dumps_are_enabled): New variable decl.
	(set_dump_file): New function decl.
	(dump_enabled_p): Rewrite in terms of new "dumps_are_enabled"
	global.
	* tree-nested.c (lower_nested_functions): Replace assignments to
	"dump_file" with calls to set_dump_file.

From-SVN: r262220

tree-cfg.c (verify_gimple_in_cfg): Call verify_location on the goto_locus of each outgoing edge of each basic block.

	* tree-cfg.c (verify_gimple_in_cfg): Call verify_location on the
	goto_locus of each outgoing edge of each basic block.

From-SVN: r262219

2018-06-28  Richard Biener  <rguenther@suse.de>

	* dwarf2out.c (decl_scope_table): Remove.
	(push_decl_scope): Likewise.
	(pop_decl_scope): Likewise.
	(gen_type_die_for_member): Do not call push/pop_decl_scope.
	(gen_struct_or_union_type_die): Likewise.
	(gen_tagged_type_die): Likewise.
	(dwarf2out_init): Do not initialize decl_scope_table.
	(dwarf2out_c_finalize): Do not free it.

From-SVN: r262218

2018-06-28  Richard Biener  <rguenther@suse.de>

	* dwarf2out.c (gen_subprogram_die): Use is_unit_die when
	deciding whether to not re-use a DIE.

From-SVN: r262217

From-SVN: r262216

2018-06-28  David Pagan  <dave.pagan@oracle.com>

	PR c/55976
	* gcc.dg/noncompile/pr55976-1.c: Add dg-prune-output for extraneous
	message causing unexpected test FAIL.

From-SVN: r262215

2018-06-28  Martin Liska  <mliska@suse.cz>

	* brigspec.c: Add missing header file inclusion.

From-SVN: r262214

2018-06-28  Richard Biener  <rguenther@suse.de>

	* dwarf2out.c (gen_subprogram_die): Always re-use DIEs with an
	DW_AT_abstract_origin attribute.

From-SVN: r262213

2018-06-28  Martin Liska  <mliska@suse.cz>

	* tree-switch-conversion.c (jump_table_cluster::can_be_handled):
        Use newly introduced constants.
	* tree-switch-conversion.h (struct jump_table_cluster):
        Define max_ratio_for_size and max_ratio_for_speed.

From-SVN: r262212

2018-06-28  Martin Liska  <mliska@suse.cz>

	* tree-switch-conversion.c (jump_table_cluster::find_jump_tables):
        Add new checking assert to catch invalid state.
	(jump_table_cluster::can_be_handled): Handle single case
        clusters.
	(jump_table_cluster::is_beneficial): Bail out for such case.
	(bit_test_cluster::find_bit_tests):
        Add new checking assert to catch invalid state.
	(bit_test_cluster::can_be_handled): Handle single case
        clusters.
	(bit_test_cluster::is_beneficial): Bail out for such case.
	(switch_decision_tree::analyze_switch_statement):
        Fix comment.
2018-06-28  Martin Liska  <mliska@suse.cz>

	* gcc.dg/tree-ssa/switch-1.c: New test.

From-SVN: r262211

2018-06-28  Martin Liska  <mliska@suse.cz>

	* common.opt: Introduce -completion option.
	* gcc.c (driver_handle_option): Handle it.
	(driver::main): Print completions if completion
        is set.
	* opt-suggestions.c (option_proposer::get_completions):
        New function.
	(option_proposer::suggest_completion): Likewise.
	(option_proposer::find_param_completions): Likewise.
	(verify_autocompletions): Likewise.
	(test_completion_valid_options): Likewise.
	(test_completion_valid_params): Likewise.
	(in_completion_p): Likewise.
	(empty_completion_p): Likewise.
	(test_completion_partial_match): Likewise.
	(test_completion_garbage): Likewise.
	(opt_proposer_c_tests): Likewise.
	* opt-suggestions.h: Declare new functions.
	* opts.c (common_handle_option): Handle OPT__completion_.
	* selftest-run-tests.c (selftest::run_tests): Add
        opt_proposer_c_tests.
	* selftest.c (assert_str_startswith): New.
	* selftest.h (assert_str_startswith): Likewise.
	(opt_proposer_c_tests): New.
	(ASSERT_STR_STARTSWITH): Likewise.

From-SVN: r262210

.
2018-06-28  Martin Liska  <mliska@suse.cz>

	* Makefile.in: Add opt-suggestions.o.
	* gcc-main.c: Include opt-suggestions.h.
	* gcc.c (driver::driver): Likewise.
	(driver::~driver): Remove m_option_suggestions.
	(driver::build_option_suggestions): Moved to option_proposer.
	(driver::suggest_option): Likewise.
	(driver::handle_unrecognized_options): Use option_proposer.
	* gcc.h (class driver): Add new memver m_option_proposer.
	* opt-suggestions.c: New file.
	* opt-suggestions.h: New file.
2018-06-28  Martin Liska  <mliska@suse.cz>

	* cppspec.c: Include opt-suggestions.h.
2018-06-28  Martin Liska  <mliska@suse.cz>

	* gfortranspec.c: Include opt-suggestions.h.
2018-06-28  Martin Liska  <mliska@suse.cz>

	* jit-playback.c: Include opt-suggestions.h.

From-SVN: r262209