gcc.git
6 years agore PR c++/25759 (Documentation not clear, attribute packed on class in C++)
Sandra Loosemore [Fri, 16 Nov 2018 00:50:41 +0000 (19:50 -0500)]
re PR c++/25759 (Documentation not clear, attribute packed on class in C++)

2018-11-15  Sandra Loosemore  <sandra@codesourcery.com>

PR c++/25759

gcc/
* doc/extend.texi (Common Type Attributes): Make it explicit
that attribute "packed" can apply to C++ classes.

From-SVN: r266199

6 years agoDaily bump.
GCC Administrator [Fri, 16 Nov 2018 00:16:34 +0000 (00:16 +0000)]
Daily bump.

From-SVN: r266198

6 years agoPR c++/87541 - ICE using a constant decl as an attribute alloc_size argument
Martin Sebor [Thu, 15 Nov 2018 22:53:57 +0000 (22:53 +0000)]
PR c++/87541 - ICE using a constant decl as an attribute alloc_size argument

PR c++/87541 - ICE using a constant decl as an attribute alloc_size argument
PR c++/87542 - bogus error on attribute format with a named constant argument

gcc/ChangeLog:

PR c++/87541
PR c++/87542
* tree.c (type_argument_type): New function.
* tree.h (type_argument_type): Declare it.
* gcc/doc/extend.texi (alloc_align): Update and clarify.
(alloc_size, nonnull, sentinel): Same.

gcc/c-family/ChangeLog:

PR c++/87541
PR c++/87542
* c-attribs.c (positional_argument): New function.
(handle_alloc_size_attribute): Use it and simplify.
(handle_alloc_align_attribute): Same.
(handle_assume_aligned_attribute): Same.
(handle_nonnull_attribute): Same.
* c-common.c (check_function_arguments): Pass fntype to
check_function_format.
* c-common.h (check_function_format): Add an argument.
(PosArgFlags, positional_argument): Declare new type and function.
* c-format.c (decode_format_attr): Add arguments.
(check_format_string, get_constant): Same.
(convert_format_name_to_system_name): Adjust.

gcc/testsuite/ChangeLog:

PR c++/87541
PR c++/87542
* g++.dg/ext/attr-alloc_size.C: New test.
* c-c++-common/pr71574.c: Adjust diagnostics.
* c-c++-common/attributes-1.c: Same.
* gcc.dg/attr-alloc_align-2.c: Same.
* gcc.dg/attr-alloc_align-4.c: New test.
* gcc.dg/attr-alloc_size-2.c: Adjust diagnostics.
* gcc.dg/attr-alloc_size.c: Same.
* gcc.dg/attr-assume_aligned-4.c: New test.
* gcc.dg/format/attr-3.c: Adjust diagnostics.
* gcc.dg/nonnull-2.c: Same.
* gcc.dg/torture/pr80612.c: Same.
* obj-c++.dg/attributes/method-format-1.mm: Same.
* obj-c++.dg/attributes/method-nonnull-1.mm: Same.
* objc.dg/attributes/method-format-1.m: same.
* objc.dg/attributes/method-nonnull-1.m: Same.

From-SVN: r266195

6 years agoPR c/83656 - missing -Wbuiltin-declaration-mismatch on declaration without prototype
Martin Sebor [Thu, 15 Nov 2018 22:18:54 +0000 (22:18 +0000)]
PR c/83656 - missing -Wbuiltin-declaration-mismatch on declaration without prototype

gcc/c/ChangeLog:

PR c/83656
* c-decl.c (header_for_builtin_fn): Declare.
(diagnose_mismatched_decls): Diagnose declarations of built-in
functions without a prototype.
* c-typeck.c (maybe_warn_builtin_no_proto_arg): New function.
(convert_argument): Same.
(convert_arguments): Factor code out into convert_argument.
Detect mismatches between built-in formal arguments in calls
to built-in without prototype.
(build_conditional_expr): Same.
(type_or_builtin_type): New function.
(convert_for_assignment): Add argument.  Conditionally issue
warnings instead of errors for mismatches.

gcc/testsuite/ChangeLog:

PR c/83656
* gcc.dg/20021006-1.c
* gcc.dg/Wbuiltin-declaration-mismatch.c: New test.
* gcc.dg/Wbuiltin-declaration-mismatch-2.c: New test.
* gcc.dg/Wbuiltin-declaration-mismatch-3.c: New test.
* gcc.dg/Wbuiltin-declaration-mismatch-4.c: New test.
* gcc.dg/Walloca-16.c: Adjust.
* gcc.dg/Wrestrict-4.c: Adjust.
* gcc.dg/Wrestrict-5.c: Adjust.
* gcc.dg/atomic/stdatomic-generic.c: Adjust.
* gcc.dg/atomic/stdatomic-lockfree.c: Adjust.
* gcc.dg/initpri1.c: Adjust.
* gcc.dg/pr15698-1.c: Adjust.
* gcc.dg/pr69156.c: Adjust.
* gcc.dg/pr83463.c: Adjust.
* gcc.dg/redecl-4.c: Adjust.
* gcc.dg/tls/thr-init-2.c: Adjust.
* gcc.dg/torture/pr55890-2.c: Adjust.
* gcc.dg/torture/pr55890-3.c: Adjust.
* gcc.dg/torture/pr67741.c: Adjust.
* gcc.dg/torture/stackalign/sibcall-1.c: Adjust.
* gcc.dg/torture/tls/thr-init-1.c: Adjust.
* gcc.dg/tree-ssa/builtins-folding-gimple-ub.c: Adjust.

From-SVN: r266194

6 years ago[PR c++/86246] ICE tsubst explicit operator call
Nathan Sidwell [Thu, 15 Nov 2018 19:54:25 +0000 (19:54 +0000)]
[PR c++/86246] ICE tsubst explicit operator call

https://gcc.gnu.org/ml/gcc-patches/2018-11/msg01405.html
PR c++/86246
PR c++/87989
* typeck.c (finish_class_member_access_expr): Conversion operator
to dependent type is dependent.

* g++.dg/template/pr86246.C: New.
* g++.dg/template/pr87989.C: New.

From-SVN: r266193

6 years agoconstexpr.c (ensure_literal_type_for_constexpr_object): Use DECL_SOURCE_LOCATION...
Paolo Carlini [Thu, 15 Nov 2018 18:03:54 +0000 (18:03 +0000)]
constexpr.c (ensure_literal_type_for_constexpr_object): Use DECL_SOURCE_LOCATION in error_at calls.

/cp
2018-11-15  Paolo Carlini  <paolo.carlini@oracle.com>

* constexpr.c (ensure_literal_type_for_constexpr_object): Use
DECL_SOURCE_LOCATION in error_at calls.

/testsuite
2018-11-15  Paolo Carlini  <paolo.carlini@oracle.com>

* g++.dg/cpp0x/constexpr-diag3.C: Check locations too.
* g++.dg/cpp0x/constexpr-ice19.C: Likewise.
* g++.dg/cpp0x/constexpr-nonlit2.C: Likewise.
* g++.dg/cpp1z/constexpr-lambda15.C: Likewise.
* g++.dg/ext/constexpr-vla5.C: Likewise.
* g++.dg/gomp/pr85134.C: Likewise.

From-SVN: r266192

6 years agoHandle vectors that don't fit in an integer.
Andrew Stubbs [Thu, 15 Nov 2018 17:14:15 +0000 (17:14 +0000)]
Handle vectors that don't fit in an integer.

GCN vector sizes range between 64 and 512 bytes, none of which have
correspondingly sized integer modes.  This breaks a number of assumptions
throughout the compiler, but I don't really want to create modes just for this
purpose.

Instead, this patch fixes up the cases that I've found, so far, such that the
compiler tries something else, or fails to optimize, rather than just ICE.

2018-11-15  Andrew Stubbs  <ams@codesourcery.com>
            Kwok Cheung Yeung  <kcy@codesourcery.com>

gcc/
* tree-vect-stmts.c (vectorizable_store): Don't ICE when
int_mode_for_size fails.
(vectorizable_load): Likewise.

Co-Authored-By: Kwok Cheung Yeung <kcy@codesourcery.com>
From-SVN: r266190

6 years ago[C++ DR 2336] virtual dtors, exception specs & abstract classes
Nathan Sidwell [Thu, 15 Nov 2018 15:51:39 +0000 (15:51 +0000)]
[C++ DR 2336] virtual dtors, exception specs & abstract classes

https://gcc.gnu.org/ml/gcc-patches/2018-11/msg01389.html
DR 2336
* cp-tree.h (enum special_function_kind): Add sfk_virtual_destructor.
* method.c (type_has_trivial_fn): Add it.
(SFK_DTOR_P): Likewise.
(synthesized_method_base_walk): Don't check access of vbases of
abstract classes when sfk_virtual_destructor.
(synthesized_method_walk): Skip vbases of abstract classes except
when sfk_virtual_destructor.
(get_defaulted_eh_spec): Set sfk_virtual_destructor as needed.

* g++.dg/cpp1y/pr79393-3.C: New.

From-SVN: r266188

6 years agodoc/ux.texi: auto_diagnostic_group now does something
David Malcolm [Thu, 15 Nov 2018 15:18:43 +0000 (15:18 +0000)]
doc/ux.texi: auto_diagnostic_group now does something

As of r266186, auto_diagnostic_group is now user-visible
(via -fdiagnostics-format=json), so update the diagnostic
guidelines accordingly.

gcc/ChangeLog:
* doc/ux.texi (Group logically-related diagnostics): Move
discussion of auto_diagnostic_group into this new subsection.
Give an example of where this grouping is used.

From-SVN: r266187

6 years agoMachine-readable diagnostic output (PR other/19165)
David Malcolm [Thu, 15 Nov 2018 14:32:41 +0000 (14:32 +0000)]
Machine-readable diagnostic output (PR other/19165)

This patch implements a -fdiagnostics-format=json option which
converts the diagnostics to be output to stderr in a JSON format;
see the documentation in invoke.texi.

Logically-related diagnostics are nested at the JSON level, using
the auto_diagnostic_group mechanism.

gcc/ChangeLog:
PR other/19165
* Makefile.in (OBJS): Move json.o to...
(OBJS-libcommon): ...here and add diagnostic-format-json.o.
* common.opt (fdiagnostics-format=): New option.
(diagnostics_output_format): New enum.
* diagnostic-format-json.cc: New file.
* diagnostic.c (default_diagnostic_final_cb): New function, taken
from start of diagnostic_finish.
(diagnostic_initialize): Initialize final_cb to
default_diagnostic_final_cb.
(diagnostic_finish): Move "being treated as errors" messages to
default_diagnostic_final_cb.  Call any final_cb.
(default_diagnostic_finalizer): Add diagnostic_t param.
(diagnostic_report_diagnostic): Pass "orig_diag_kind" to
diagnostic_finalizer callback.
* diagnostic.h (enum diagnostics_output_format): New enum.
(diagnostic_finalizer_fn): Reimplement, adding diagnostic_t param.
(struct diagnostic_context): Add "final_cb".
(default_diagnostic_finalizer): Add diagnostic_t param.
(diagnostic_output_format_init): New decl.
* doc/invoke.texi (-fdiagnostics-format): New option.
* dwarf2out.c (gen_producer_string): Ignore
OPT_fdiagnostics_format_.
* gcc.c (driver_handle_option): Handle OPT_fdiagnostics_format_.
* lto-wrapper.c (append_diag_options): Ignore it.
* opts.c (common_handle_option): Handle it.

gcc/c-family/ChangeLog:
PR other/19165
* c-opts.c (c_diagnostic_finalizer): Add diagnostic_t param.

gcc/fortran/ChangeLog:
PR other/19165
* error.c (gfc_diagnostic_finalizer): Add diagnostic_t param.

gcc/jit/ChangeLog:
PR other/19165
* dummy-frontend.c (jit_begin_diagnostic): Add diagnostic_t param.

gcc/testsuite/ChangeLog:
PR other/19165
* c-c++-common/diagnostic-format-json-1.c: New test.
* c-c++-common/diagnostic-format-json-2.c: New test.
* c-c++-common/diagnostic-format-json-3.c: New test.
* c-c++-common/diagnostic-format-json-4.c: New test.
* c-c++-common/diagnostic-format-json-5.c: New test.
* gcc.dg/plugin/diagnostic_plugin_test_show_locus.c
(custom_diagnostic_finalizer): Add diagnostic_t param.
* gcc.dg/plugin/location_overflow_plugin.c
(verify_unpacked_ranges): Likewise.
(verify_no_columns): Likewise.
* gfortran.dg/diagnostic-format-json-1.F90: New test.
* gfortran.dg/diagnostic-format-json-2.F90: New test.
* gfortran.dg/diagnostic-format-json-3.F90: New test.

From-SVN: r266186

6 years agographite: add missing dump_enabled_p checks (PR tree-optimization/88015)
David Malcolm [Thu, 15 Nov 2018 14:01:29 +0000 (14:01 +0000)]
graphite: add missing dump_enabled_p checks (PR tree-optimization/88015)

gcc/ChangeLog:
PR tree-optimization/88015
* graphite-isl-ast-to-gimple.c
(translate_isl_ast_to_gimple::scop_to_isl_ast): Add missing check
for dump_enabled_p.
* graphite-sese-to-poly.c (build_poly_scop): Likewise.

From-SVN: r266184

6 years agore PR tree-optimization/88029 (ICE in execute_todo, at passes.c:1974)
Richard Biener [Thu, 15 Nov 2018 13:44:34 +0000 (13:44 +0000)]
re PR tree-optimization/88029 (ICE in execute_todo, at passes.c:1974)

2018-11-15  Richard Biener  <rguenther@suse.de>

        PR middle-end/88029
        * gimple.c (gimple_call_flags): Union flags from decl, type
        and call fntype.
        * trans-mem.c (is_tm_pure_call): Simplify.

        * gcc.dg/tree-ssa/pr88029.c: New testcase.

From-SVN: r266183

6 years agore PR tree-optimization/88031 (ICE in vectorizable_reduction, at tree-vect-loop.c...
Richard Biener [Thu, 15 Nov 2018 13:42:13 +0000 (13:42 +0000)]
re PR tree-optimization/88031 (ICE in vectorizable_reduction, at tree-vect-loop.c:6953)

2018-11-15  Richard Biener  <rguenther@suse.de>

PR tree-optimization/88031
* tree-vect-loop.c (vectorizable_reduction): Move check
for multiple types earlier so we get the expected dump.
Simplify calls to vectorizable_condition.
* tree-vect-stmts.h (vectorizable_condition): Update prototype.
* tree-vect-stmts.c (vectorizable_condition): Instead of
reduc_def and reduc_index take just a flag.  Simplify
code-generation now that we can rely on the defs being set up.
(vectorizable_comparison): Remove unused argument.

* gcc.dg/pr88031.c: New testcase.

From-SVN: r266182

6 years ago[C++ DR 2336] Clean up synth walkers first
Nathan Sidwell [Thu, 15 Nov 2018 13:22:15 +0000 (13:22 +0000)]
[C++ DR 2336] Clean up synth walkers first

https://gcc.gnu.org/ml/gcc-patches/2018-11/msg01376.html
* cp-tree.h (enum special_function_kind): Reorder and comment.
* method.c (SFK_CTOR_P, SFK_DTOR_P, SFK_ASSIGN_P, SFK_COPY_P)
(SFK_MOVE_P): New predicates.
(walk_field_subobs, synthesized_method_base_walk): Drop
copy_arg_p, move_p, assign_p args.  Use new SFK predicates.  Order
parameters consistently.
(synthesized_method_walk): Drop ctor_p, copy_arg_p, move_p,
assign_p calculations.  Use new SFK predicates.  Adjust calls to
worker functions.

From-SVN: r266180

6 years agoFix spaces in PR62178 test
Wilco Dijkstra [Thu, 15 Nov 2018 12:32:33 +0000 (12:32 +0000)]
Fix spaces in PR62178 test

Fix spaces in scan assembler tests.

    testsuite/
* gcc.target/aarch64/pr62178.c: Fix spaces.

From-SVN: r266179

6 years agomisc.c (gnat_init_gcc_eh): Do not override the switch -fnon-call-exceptions passed...
Eric Botcazou [Thu, 15 Nov 2018 12:06:46 +0000 (12:06 +0000)]
misc.c (gnat_init_gcc_eh): Do not override the switch -fnon-call-exceptions passed on the command line in...

* gcc-interface/misc.c (gnat_init_gcc_eh): Do not override the switch
-fnon-call-exceptions passed on the command line in -gnatp mode.

From-SVN: r266176

6 years agore PR tree-optimization/88030 (ICE in calc_dfs_tree, at dominance.c:458)
Richard Biener [Thu, 15 Nov 2018 10:42:15 +0000 (10:42 +0000)]
re PR tree-optimization/88030 (ICE in calc_dfs_tree, at dominance.c:458)

2018-11-15  Richard Biener  <rguenther@suse.de>

PR tree-optimization/88030
* tree-complex.c (need_eh_cleanup): New global.
(update_complex_assignment): Mark blocks that need EH update.
(expand_complex_comparison): Likewise.
(tree_lower_complex): Allocate and deallocate need_eh_cleanup,
perform EH cleanup and schedule CFG cleanup if that did anything.

* gcc.dg/tsan/pr88030.c: New testcase.

From-SVN: r266175

6 years agore PR rtl-optimization/88018 (ICE in insert_insn_on_edge at cfgrtl.c:1952 since r255066)
Jakub Jelinek [Thu, 15 Nov 2018 08:47:21 +0000 (09:47 +0100)]
re PR rtl-optimization/88018 (ICE in insert_insn_on_edge at cfgrtl.c:1952 since r255066)

PR rtl-optimization/88018
* cfgrtl.c (fixup_abnormal_edges): Guard moving insns to fallthru edge
on the presence of fallthru edge, rather than if it is a USE or not.

* g++.dg/tsan/pr88018.C: New test.

From-SVN: r266174

6 years agore PR tree-optimization/87917 (ICE in initialize_matrix_A at gcc/tree-data-ref.c...
Richard Biener [Thu, 15 Nov 2018 08:16:22 +0000 (08:16 +0000)]
re PR tree-optimization/87917 (ICE in initialize_matrix_A at gcc/tree-data-ref.c:3150)

2018-11-15  Richard Biener  <rguenther@suse.de>

PR middle-end/87917
* tree-data-ref.c (analyze_miv_subscript): Guard calls to
analyze_subscript_affine_affine properly.

* gcc.dg/tree-ssa/pr87917.c: New testcase.

From-SVN: r266173

6 years agocsky-linux-elf.h (LINUX_DYNAMIC_LINKER): Remove.
Xianmiao Qu [Thu, 15 Nov 2018 06:01:09 +0000 (06:01 +0000)]
csky-linux-elf.h (LINUX_DYNAMIC_LINKER): Remove.

2018-11-15  Xianmiao Qu  <xianmiao_qu@c-sky.com>

gcc/
* config/csky/csky-linux-elf.h (LINUX_DYNAMIC_LINKER): Remove.
(GLIBC_DYNAMIC_LINKER): Define.
(LINUX_TARGET_LINK_SPEC): Update the dynamic linker's name.

libgcc/
* config/csky/linux-unwind.h: Fix coding style.

From-SVN: r266172

6 years agore PR tree-optimization/84648 (Missed optimization : loop not removed.)
Bin Cheng [Thu, 15 Nov 2018 03:44:49 +0000 (03:44 +0000)]
re PR tree-optimization/84648 (Missed optimization : loop not removed.)

PR tree-optimization/84648
* tree-ssa-loop-niter.c (adjust_cond_for_loop_until_wrap): New.
(number_of_iterations_cond): Adjust exit cond for loop-until-wrap case
by calling adjust_cond_for_loop_until_wrap.

gcc/testsuite
* gcc.dg/tree-ssa/pr84648.c: New test.
* gcc.dg/pr68317.c: Add warning check on overflow.

From-SVN: r266171

6 years agore PR other/56334 (__attribute__((aligned)) documentation is misleading)
Sandra Loosemore [Thu, 15 Nov 2018 02:55:26 +0000 (21:55 -0500)]
re PR other/56334 (__attribute__((aligned)) documentation is misleading)

2018-11-15  Sandra Loosemore  <sandra@codesourcery.com>

PR other/56334

gcc/
* doc/extend.texi (Common Function Attributes): Clarify linker
restrictions on "aligned" attribute.
(Common Variable Attributes): Likewise.  Mention that linker
restrictions don't apply to stack-allocated variables.

From-SVN: r266170

6 years agogensupport.c (add_predicate_code): Properly handle ZERO_EXTRACT as an lvalue.
Joern Rennecke [Thu, 15 Nov 2018 01:02:09 +0000 (01:02 +0000)]
gensupport.c (add_predicate_code): Properly handle ZERO_EXTRACT as an lvalue.

        * gensupport.c (add_predicate_code): Properly handle ZERO_EXTRACT
        as an lvalue.

From-SVN: r266169

6 years agore PR lto/55102 (The options -flto and -On do not behave as described in GCC docs)
Sandra Loosemore [Thu, 15 Nov 2018 00:41:10 +0000 (19:41 -0500)]
re PR lto/55102 (The options -flto and -On do not behave as described in GCC docs)

2018-11-14  Sandra Loosemore  <sandra@codesourcery.com>

PR lto/55102
PR lto/56700

gcc/
* doc/invoke.texi (Optimize Options): Remove bad example about
interaction between -flto and -O.  Replace it with a note that
you need to compile with -O and not just link.  Copy-edit -flto
discussion to reduce verbiage and improve flow.

From-SVN: r266168

6 years agoDaily bump.
GCC Administrator [Thu, 15 Nov 2018 00:16:20 +0000 (00:16 +0000)]
Daily bump.

From-SVN: r266167

6 years agoOptimize pool resource allocation
Jonathan Wakely [Thu, 15 Nov 2018 00:04:19 +0000 (00:04 +0000)]
Optimize pool resource allocation

A recent change caused a performance regression. This restores the
previous performance and adds a performance test.

* scripts/check_performance: Allow tests to choose a -std flag.
* src/c++17/memory_resource.cc (bitset::get_first_unset()): Use local
variables of the right types. Call update_next_word() unconditionally.
* testsuite/20_util/unsynchronized_pool_resource/cons.cc: New test.
* testsuite/performance/20_util/memory_resource/pools.cc: New test.
* testsuite/util/testsuite_performance.h (time_counter): Allow
timer to be restarted.

From-SVN: r266164

6 years agoFix test that does undefined shifts greater than width of size_t
Jonathan Wakely [Thu, 15 Nov 2018 00:04:12 +0000 (00:04 +0000)]
Fix test that does undefined shifts greater than width of size_t

* testsuite/20_util/unsynchronized_pool_resource/allocate.cc: Fix
test for 32-bit targets. Test additional allocation sizes.

From-SVN: r266163

6 years agore PR middle-end/59658 (Document -f* flags enabled by -Og)
Sandra Loosemore [Wed, 14 Nov 2018 20:05:13 +0000 (15:05 -0500)]
re PR middle-end/59658 (Document -f* flags enabled by -Og)

2018-11-14  Sandra Loosemore  <sandra@codesourcery.com>

PR middle-end/59658

gcc/
* doc/invoke.texi (Optimize Options): Clarify that -O0 and -Og
also suppress many optimizations.  Alphabetize option lists for
-O1, -O2, and -Os.  Add list of options disabled with -Og, and
correct documentation for those options to say that.
* opts.c (default_options_table): Sort table by level and option
name, to make it easier to correlate to the manual.

From-SVN: r266162

6 years agoi386.c (ix86_print_operand_address_as): Simplify printing of the names of segment...
Uros Bizjak [Wed, 14 Nov 2018 19:47:28 +0000 (20:47 +0100)]
i386.c (ix86_print_operand_address_as): Simplify printing of the names of segment registers.

* config/i386/i386.c (ix86_print_operand_address_as): Simplify
printing of the names of segment registers.

From-SVN: r266161

6 years ago[debug/88006] -fdebug-types-section gives undefined ref
Nathan Sidwell [Wed, 14 Nov 2018 19:30:47 +0000 (19:30 +0000)]
[debug/88006] -fdebug-types-section gives undefined ref

https://gcc.gnu.org/ml/gcc-patches/2018-11/msg01280.html
PR debug/88006
PR debug/87462
* dwarf2out.c (dwarf2out_finish): Apply resolve_addr to comdat
type list.

* g++.dg/debug/dwarf2/pr87462.C: New.
* g++.dg/debug/dwarf2/pr88006.C: New.

From-SVN: r266158

6 years agoAdd missing ZLIBINC to CFLAGS-optinfo-emit-json.o
David Malcolm [Wed, 14 Nov 2018 19:02:05 +0000 (19:02 +0000)]
Add missing ZLIBINC to CFLAGS-optinfo-emit-json.o

gcc/ChangeLog:
* Makefile.in (CFLAGS-optinfo-emit-json.o): Add $(ZLIBINC).

From-SVN: r266156

6 years agoparser.c (make_id_declarator): Add location_t parameter.
Paolo Carlini [Wed, 14 Nov 2018 17:50:25 +0000 (17:50 +0000)]
parser.c (make_id_declarator): Add location_t parameter.

/cp
2018-11-14  Paolo Carlini  <paolo.carlini@oracle.com>

* parser.c (make_id_declarator): Add location_t parameter.
(cp_parser_lambda_declarator_opt): Adjust call.
(cp_parser_decomposition_declaration): Likewise.
(cp_parser_alias_declaration): Likewise.
(cp_parser_direct_declarator): Likewise.
(cp_parser_member_declaration): Likewise.
(cp_parser_objc_class_ivars): Likewise.
* decl.c (grokdeclarator): Use declarator->id_loc in two error
messages.

/testsuite
2018-11-14  Paolo Carlini  <paolo.carlini@oracle.com>

* g++.dg/cpp0x/nsdmi-union6.C: Test locations too.
* g++.dg/cpp0x/nsdmi6.C: Likewise.
* g++.dg/ext/flexary4.C: Likewise.
* g++.dg/ext/flexary9.C: Likewise.
* g++.dg/other/incomplete2.C: Likewise.
* g++.dg/parse/friend12.C: Likewise.

From-SVN: r266155

6 years agoHandle libphobos in contrib/gcc_update
Rainer Orth [Wed, 14 Nov 2018 17:09:09 +0000 (17:09 +0000)]
Handle libphobos in contrib/gcc_update

* gcc_update (files_and_dependencies): Handle libphobos.

From-SVN: r266154

6 years agoP1236R1 - Signed integers are two's complement
Jakub Jelinek [Wed, 14 Nov 2018 16:46:06 +0000 (17:46 +0100)]
P1236R1 - Signed integers are two's complement

P1236R1 - Signed integers are two's complement
gcc/cp/
* constexpr.c (cxx_eval_check_shift_p): Disable the signed LSHIFT_EXPR
checks for c++2a.
gcc/c-family/
* c-warn.c (maybe_warn_shift_overflow): Don't warn for c++2a.
* c-ubsan.c (ubsan_instrument_shift): Make signed shifts
with in-range second operand well defined for -std=c++2a.
gcc/
* doc/invoke.texi (Wshift-overflow): Adjust documentation for
c++2a.
gcc/testsuite/
* g++.dg/cpp2a/constexpr-shift1.C: New test.
* g++.dg/warn/permissive-1.C (enum A, enum D): Don't expect
diagnostics here for c++2a.
* g++.dg/cpp0x/constexpr-shift1.C (fn3, i3, fn4, i4): Don't expect
diagnostics here for c++2a.
* g++.dg/cpp0x/constexpr-60049.C (f3, x3, y3): Likewise.
* g++.dg/ubsan/cxx11-shift-1.C (main): Add some further tests.
* g++.dg/ubsan/cxx11-shift-2.C (main): Likewise.
* g++.dg/ubsan/cxx2a-shift-1.C: New test.
* g++.dg/ubsan/cxx2a-shift-2.C: New test.

From-SVN: r266153

6 years agore PR bootstrap/86739 (Bootstrap broken with host GCC 4.1.2)
Jakub Jelinek [Wed, 14 Nov 2018 16:43:38 +0000 (17:43 +0100)]
re PR bootstrap/86739 (Bootstrap broken with host GCC 4.1.2)

PR bootstrap/86739
* hash-map.h (hash_map::iterator::reference_pair): New class.
(hash_map::iterator::operator*): Return it rather than std::pair.

From-SVN: r266152

6 years agooptabs.c (expand_binop): Pass INT_MODE to operand_subword_force iff the operand is...
Jeff Law [Wed, 14 Nov 2018 16:36:19 +0000 (09:36 -0700)]
optabs.c (expand_binop): Pass INT_MODE to operand_subword_force iff the operand is a constant.

* optabs.c (expand_binop): Pass INT_MODE to operand_subword_force
iff the operand is a constant.

* gcc.c-torture/compile/20181114.c: New test.

2018-11-14  Ilya Leoshkevich  <iii@linux.ibm.com>

From-SVN: r266151

6 years ago* gimple-ssa-evrp-analyze.c
Aldy Hernandez [Wed, 14 Nov 2018 16:29:41 +0000 (16:29 +0000)]
* gimple-ssa-evrp-analyze.c
(evrp_range_analyzer::record_ranges_from_incoming_edge): Rename
ignore_equivs_equal_p to equal_p.
* ipa-cp.c (meet_with_1): Use equal_p instead of
ignore_equivs_equal_p.
* ipa-prop.c (ipa_vr_ggc_hash_traits::equal): Same.
* tree-vrp.c (value_range::ignore_equivs_equal_p): Remove.
(value_range::operator==): Remove.
(value_range::operator!=): Remove.
(vrp_prop::visit_stmt): Use equal_p.
* tree-vrp.h (value_range): Remove operator==, operator!=,
ignore_equivs_equal_p.
* vr-values.c (update_value_range): Use equal_p.

From-SVN: r266150

6 years agoAdd comment
Michael Matz [Wed, 14 Nov 2018 16:02:03 +0000 (16:02 +0000)]
Add comment

From-SVN: r266149

6 years agore PR middle-end/86575 (-Wimplicit-fallthrough affects code generation)
Michael Matz [Wed, 14 Nov 2018 15:43:54 +0000 (15:43 +0000)]
re PR middle-end/86575 (-Wimplicit-fallthrough affects code generation)

Fix PR middle-end/86575

PR middle-end/86575
* gimplify.c (collect_fallthrough_labels): Add new argument,
return location via that, don't modify statements.
(warn_implicit_fallthrough_r): Adjust call, don't use
statement location directly.

From-SVN: r266148

6 years agore PR tree-optimization/87985 (Compile-time and memory hog w/ -O1 -ftree-slp-vectorize)
Richard Biener [Wed, 14 Nov 2018 14:33:44 +0000 (14:33 +0000)]
re PR tree-optimization/87985 (Compile-time and memory hog w/ -O1 -ftree-slp-vectorize)

2018-11-14  Richard Biener  <rguenther@suse.de>

PR middle-end/87985
* tree-data-ref.c (split_constant_offset): Add wrapper
allocating a cache hash-map.
(split_constant_offset_1): Cache results of expanding
expressions from SSA def stmts.

* gcc.dg/pr87985.c: New testcase.

From-SVN: r266147

6 years agoAdd missing dir to create_testsuite_files script
Jonathan Wakely [Wed, 14 Nov 2018 14:25:00 +0000 (14:25 +0000)]
Add missing dir to create_testsuite_files script

* scripts/create_testsuite_files: Add special_functions to the list
of directories to search. Add comment referring to conformance.exp.
* testsuite/libstdc++-dg/conformance.exp: Add comment referring
to create_testsuite_files.

From-SVN: r266146

6 years ago[PATCH 2/2] S/390: Fix expectation in mrecord-mcount test for 31-bit
Ilya Leoshkevich [Wed, 14 Nov 2018 13:08:03 +0000 (13:08 +0000)]
[PATCH 2/2] S/390: Fix expectation in mrecord-mcount test for 31-bit
 mode

The emitted address is .long, not .quad, in that case.

gcc/testsuite/ChangeLog:

2018-11-14  Ilya Leoshkevich  <iii@linux.ibm.com>

* gcc.target/s390/mrecord-mcount.c (profileme): Expect .long in
31-bit mode.

From-SVN: r266145

6 years ago[PATCH 1/2] S/390: Disable 3 global-array-* tests for 31-bit mode
Ilya Leoshkevich [Wed, 14 Nov 2018 13:07:13 +0000 (13:07 +0000)]
[PATCH 1/2] S/390: Disable 3 global-array-* tests for 31-bit mode

These tests rely on larl->movdi merge, which is not implemented for
31-bit mode.

gcc/testsuite/ChangeLog:

2018-11-14  Ilya Leoshkevich  <iii@linux.ibm.com>

* gcc.target/s390/global-array-almost-huge-element.c: Run only
in 64-bit mode.
* gcc.target/s390/global-array-almost-negative-huge-element.c:
Likewise.
* gcc.target/s390/global-array-even-element.c: Likewise.

From-SVN: r266144

6 years agore PR testsuite/88021 (aarch64 Busy hang running testcase pr60183.c since revision...
Richard Biener [Wed, 14 Nov 2018 13:07:03 +0000 (13:07 +0000)]
re PR testsuite/88021 (aarch64 Busy hang running testcase pr60183.c since revision 265914)

2018-11-14  Richard Biener  <rguenther@suse.de>

PR middle-end/88021
* tree-data-ref.c (lambda_matrix_row_add): Change const1 argument
to lambda_int.
(lambda_vector_mult_const): Likewise.
(lambda_matrix_right_hermite): Use lambda_int temporaries.

From-SVN: r266143

6 years agoSimplify floating point comparisons
Wilco Dijkstra [Wed, 14 Nov 2018 12:45:29 +0000 (12:45 +0000)]
Simplify floating point comparisons

This patch implements some of the optimizations discussed in PR71026.

Simplify (C / x >= 0.0) into x >= 0.0 with -funsafe-math-optimizations
(since C / x can underflow to zero if x is huge, it's not safe otherwise).
If C is negative the comparison is reversed.

Simplify (x * C1) > C2 into x > (C2 / C1) with -funsafe-math-optimizations.
If C1 is negative the comparison is reversed.

    gcc/
PR 71026/tree-optimization
* match.pd: Simplify floating point comparisons.

    gcc/testsuite/
PR 71026/tree-optimization
* gcc.dg/div-cmp-1.c: New test.
* gcc.dg/div-cmp-2.c: New test.

Co-Authored-By: Jackson Woodruff <jackson.woodruff@arm.com>
From-SVN: r266142

6 years agore PR other/88007 (ICE in gt_ggc_m_S, at ggc-page.c:1474)
Jakub Jelinek [Wed, 14 Nov 2018 12:38:20 +0000 (13:38 +0100)]
re PR other/88007 (ICE in gt_ggc_m_S, at ggc-page.c:1474)

PR other/88007
* c-common.c (parse_optimize_options): Allocate option string from
opts_obstack rather than as GC memory.  Move the allocation after
warning for invalid option.

* gcc.dg/pr88007.c: New test.

From-SVN: r266141

6 years agore PR rtl-optimization/87817 (gcc.target/i386/bmi2-bzhi-2.c execution test)
Jakub Jelinek [Wed, 14 Nov 2018 12:36:59 +0000 (13:36 +0100)]
re PR rtl-optimization/87817 (gcc.target/i386/bmi2-bzhi-2.c execution test)

PR rtl-optimization/87817
* config/i386/i386.c (ix86_fold_builtin): For _bzhi_u{32,64} if
last argument has low 8 bits clear, fold to 0.

* gcc.target/i386/bmi2-bzhi-3.c (main): Add a couple of new tests.

From-SVN: r266140

6 years ago[AArch64] Fix PR62178 testcase failures
Wilco Dijkstra [Wed, 14 Nov 2018 12:35:36 +0000 (12:35 +0000)]
[AArch64] Fix PR62178 testcase failures

The testcase for PR62178 has been failing for a while due to the pass
conditions being too tight, resulting in failures with -mcmodel=tiny:

ldr q2, [x0], 124
ld1r {v1.4s}, [x1], 4
cmp x0, x2
mla v0.4s, v2.4s, v1.4s
bne .L7

-mcmodel=small generates the slightly different:

ldr q1, [x0], 124
ldr s2, [x1, 4]!
cmp x0, x2
mla v0.4s, v1.4s, v2.s[0]
bne .L7

This is due to Combine merging a DUP instruction with either a load
or MLA - we can't force it to prefer one over the other.  However the
generated vector loop is fast either way since it generates MLA and
merges the DUP either with a load or MLA.  So relax the conditions
slightly and check we still generate MLA and there is no DUP or FMOV.

The testcase now passes - committed as obvious.

    testsuite/
* gcc.target/aarch64/pr62178.c: Relax scan-assembler checks.

From-SVN: r266139

6 years agofix Darwin bootstrap.
Iain Sandoe [Wed, 14 Nov 2018 12:34:27 +0000 (12:34 +0000)]
fix Darwin bootstrap.

gcc/

* tree-vect-data-refs.c (vect_can_force_dr_alignment_p): Cast
MAX_OFILE_ALIGNMENT as needed.

From-SVN: r266138

6 years ago[Ada] Problem with boundary case of XOR operation and unnesting
Ed Schonberg [Wed, 14 Nov 2018 11:42:49 +0000 (11:42 +0000)]
[Ada] Problem with boundary case of XOR operation and unnesting

The XOR operation applied to a boolean array whose component type has
the range True .. True raises constraint error. Previous to this patch,
the expansion of the operation could lead to uplevel references that
were not handled properly when unnesting is in effect.

2018-11-14  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

* exp_util.ads, exp_util.adb: Change the profile of
Silly_Boolean_Array_Xor_Test, adding a formal that can be a copy
of the right opersnd. This prevents unnesting anomalies when
that operand contains uplevel references.
* exp_ch4.adb (Expand_Boolean_Operation): Use this new profile.
* exp_pakd.adb (Expand_Packed_Boolean_Operator): Ditto.

From-SVN: r266137

6 years ago[Ada] Update signal constants for GNU/Linux
Patrick Bernardi [Wed, 14 Nov 2018 11:42:43 +0000 (11:42 +0000)]
[Ada] Update signal constants for GNU/Linux

Add the signal SIGSYS and mark the glibc reserved real-time signals
(32-34) as reserved rather than not maskable.

2018-11-14  Patrick Bernardi  <bernardi@adacore.com>

gcc/ada/

* libgnarl/a-intnam__linux.ads: Add SIGSYS.
* libgnarl/s-linux__alpha.ads, libgnarl/s-linux__android.ads,
libgnarl/s-linux__hppa.ads, libgnarl/s-linux__mips.ads,
libgnarl/s-linux__riscv.ads, libgnarl/s-linux__sparc.ads,
libgnarl/s-linux__x32.ads: Rename SIGLTHRRES, SIGLTHRCAN and
SIGLTHRDBG to SIG32, SIG33 and SIG34 as their names are
implementation specific.
* libgnarl/s-osinte__linux.ads, libgnarl/s-linux.ads: Add
SIGSYS.  Move SIG32, SIG33 and SIG34 from the unmasked list to
the reserved list.

gcc/testsuite/

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

From-SVN: r266136

6 years ago[Ada] Fix small regression with others choice in array aggregate
Eric Botcazou [Wed, 14 Nov 2018 11:42:37 +0000 (11:42 +0000)]
[Ada] Fix small regression with others choice in array aggregate

This change is aimed at fixing a fallout of bumping the default value of
the Max_Others_Replicate parameter of the Convert_To_Positional routine.
This parameter is responsible for taming the duplication of the
expression of an others choice in an array aggregate so that it doesn't
result in a code size explosion.

Unfortunately a fine-grained control based on the analysis of the
expression is not really possible because this analysis has not been
done yet by the time the decision is made in most cases, so the usual
syntactic ambiguities of the language come into play and make the
process a bit cumbersome.  For example, it is not possible to
distinguish a simple reference to a static constant declared in another
unit from a call to a parameterless function.

Therefore the change errs on the side of caution and allows the
duplication only if the expression is unambiguously static and
sufficiently simple.

For the following three aggregates, the duplication must be blocked and
the elaboration of the aggregates must be done by means of a loop:

with Q; use Q;

procedure P is

  A : Arr := (others => Get_Value);

  B : Arr := (others => Get_Other_Value (0));

  C : Arr := (others => Q.Get_Other_Value (1));

begin
  null;
end;

package Q is

  type Arr is array (1 .. 32) of Integer;

  function Get_Value return Integer;

  function Get_Other_Value (I : integer) return Integer;

end Q;

2018-11-14  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

* exp_aggr.adb (Is_Static_Element): New predicate extracted
from...
(Check_Static_Components): ...here.  Call Is_Static_Element on
each element of the component association list, if any.
(Flatten): Duplicate the expression of an others choice only if
it is static or is an aggregate which can itself be flattened.

From-SVN: r266135

6 years ago[Ada] sigtramp-vxworks: Add a rule for sp (DWARF r31) on AArch64
Olivier Hainque [Wed, 14 Nov 2018 11:42:32 +0000 (11:42 +0000)]
[Ada] sigtramp-vxworks: Add a rule for sp (DWARF r31) on AArch64

2018-11-14  Olivier Hainque  <hainque@adacore.com>

gcc/ada/

* sigtramp-vxworks-target.inc: Fix stack checking test errors in
ACATS, now that GCC can emit CFI rules referring to sp in
absence of a frame pointer.

From-SVN: r266134

6 years ago[Ada] Remove couple of recently added dead tests
Eric Botcazou [Wed, 14 Nov 2018 11:42:26 +0000 (11:42 +0000)]
[Ada] Remove couple of recently added dead tests

N_Quantified_Expression and N_Iterated_Component_Association are
unrelated nodes that cannot appear in the same context: the former can
appear wherever an expression node is acceptable whereas the latter can
appear only as an element of a component association list.  So a test
combining both most likely contains a dead arm and this change removes a
couple of them.

No functional changes.

2018-11-14  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

* exp_aggr.adb (Check_Static_Components): Remove dead test.
(Flatten): Likewise.  Move comment around.

From-SVN: r266133

6 years ago[Ada] Spurious error on Ghost null procedure
Hristian Kirtchev [Wed, 14 Nov 2018 11:42:21 +0000 (11:42 +0000)]
[Ada] Spurious error on Ghost null procedure

This patch modifies the analysis (which is really expansion) of null
procedures to set the Ghost mode of the spec when the null procedure
acts as a completion.  This ensures that all nodes and entities
generated by the expansion are marked as Ghost, and provide a proper
context for references to Ghost entities.

2018-11-14  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

* sem_ch6.adb (Analyze_Null_Procedure): Capture Ghost and
SPARK-related global state at the start of the routine. Set the
Ghost mode of the completed spec if any.  Restore the saved
Ghost and SPARK-related global state on exit from the routine.

gcc/testsuite/

* gnat.dg/ghost1.adb, gnat.dg/ghost1.ads: New testcase.

From-SVN: r266132

6 years ago[Ada] More complete information level for -gnatR output
Eric Botcazou [Wed, 14 Nov 2018 11:42:16 +0000 (11:42 +0000)]
[Ada] More complete information level for -gnatR output

This adds a 4th information level for the -gnatR output, where relevant
compiler-generated types are listed in addition to the information
already output by -gnatR3.

For the following package P:

package P is

  type Arr0 is array (Positive range <>) of Boolean;

    type Rec (D1 : Positive; D2 : Boolean) is record
       C1 : Integer;
       C2 : Arr0 (1 .. D1);

       case D2 is
          when False =>
             C3 : Character;
          when True =>
             C4 : String (1 .. 3);
             C5 : Float;
       end case;
    end record;

    type Arr1 is array (1 .. 8) of Rec (1, True);

end P;

the output generated by -gnatR4 must be:

Representation information for unit P (spec)
--------------------------------------------

for Arr0'Alignment use 1;
for Arr0'Component_Size use 8;

for Rec'Object_Size use 17179869344;
for Rec'Value_Size use (if (#2 != 0) then ((((#1 + 15) & -4) + 8) * 8)
else ((((#1 + 15) & -4) + 1) * 8) end);
for Rec'Alignment use 4;
for Rec use record
   D1 at  0 range  0 .. 31;
   D2 at  4 range  0 ..  7;
   C1 at  8 range  0 .. 31;
   C2 at 12 range  0 .. ((#1 * 8)) - 1;
   C3 at ((#1 + 15) & -4) range  0 ..  7;
   C4 at ((#1 + 15) & -4) range  0 .. 23;
   C5 at (((#1 + 15) & -4) + 4) range  0 .. 31;
end record;

for Arr1'Size use 1536;
for Arr1'Alignment use 4;
for Arr1'Component_Size use 192;

for Tarr1c'Size use 192;
for Tarr1c'Alignment use 4;
for Tarr1c use record
   D1 at  0 range  0 .. 31;
   D2 at  4 range  0 ..  7;
   C1 at  8 range  0 .. 31;
   C2 at 12 range  0 ..  7;
   C4 at 16 range  0 .. 23;
   C5 at 20 range  0 .. 31;
end record;

2018-11-14  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

* doc/gnat_ugn/building_executable_programs_with_gnat.rst
(-gnatR): Document new -gnatR4 level.
* gnat_ugn.texi: Regenerate.
* opt.ads (List_Representation_Info): Bump upper bound to 4.
* repinfo.adb: Add with clause for GNAT.HTable.
(Relevant_Entities_Size): New constant.
(Entity_Header_Num): New type.
(Entity_Hash): New function.
(Relevant_Entities): New set implemented with GNAT.HTable.
(List_Entities): Also list compiled-generated entities present
in the Relevant_Entities set. Consider that the Component_Type
of an array type is relevant.
(List_Rep_Info): Reset Relevant_Entities for each unit.
* switch-c.adb (Scan_Front_End_Switches): Add support for -gnatR4.
* switch-m.adb (Normalize_Compiler_Switches): Likewise
* usage.adb (Usage): Likewise.

From-SVN: r266131

6 years ago[Ada] Crash on interface equality covered by a renaming declaration
Javier Miranda [Wed, 14 Nov 2018 11:42:10 +0000 (11:42 +0000)]
[Ada] Crash on interface equality covered by a renaming declaration

The frontend crashes processing a tagged type that implements an
interface which has an equality primitive (that is, "=") and covers such
primitive by means of a renaming declaration.

2018-11-14  Javier Miranda  <miranda@adacore.com>

gcc/ada/

* exp_disp.adb (Expand_Interface_Thunk): Extend handling of
renamings of the predefined equality primitive.
(Make_Secondary_DT): When calling Expand_Interface_Thunk() pass
it the primitive, instead of its Ultimate_Alias; required to
allow the called routine to identify renamings of the predefined
equality operation.

gcc/testsuite/

* gnat.dg/equal5.adb, gnat.dg/equal5.ads: New testcase.

From-SVN: r266130

6 years ago[Ada] Use of Suppress_Initialization with pragma Thread_Local_Storage
Hristian Kirtchev [Wed, 14 Nov 2018 11:42:05 +0000 (11:42 +0000)]
[Ada] Use of Suppress_Initialization with pragma Thread_Local_Storage

This patch allows for aspect/pragma Suppress_Initialization to be an
acceptable form of missing initialization with respect to the semantics
of pragma Thread_Local_Storage.

------------
-- Source --
------------

--  gnat.adc

pragma Initialize_Scalars;

--  pack.ads

with System;

package Pack is
   Addr : System.Address
      with Thread_Local_Storage, Suppress_Initialization;
end Pack;

-----------------
-- Compilation --
-----------------

$ gcc -c pack.ads

2018-11-14  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

* freeze.adb (Check_Pragma_Thread_Local_Storage): New routine. A
variable with suppressed initialization has no initialization
for purposes of the pragma.
(Freeze_Object_Declaration): Remove variable
Has_Default_Initialization as it is no longer used. Use routine
Check_Pragma_Thread_Local_Storage to verify the semantics of
pragma Thread_Local_Storage.

From-SVN: r266129

6 years ago[Ada] Missing constraint check on if-expression returning a string
Ed Schonberg [Wed, 14 Nov 2018 11:41:58 +0000 (11:41 +0000)]
[Ada] Missing constraint check on if-expression returning a string

If the context of an if-expression is constrained, its dependent
expressions must obey the constraints of the expected type. Prior to
this patch, this check was performed only for scalar types, by means of
an added conversion.  This is now enforced on all types by means of a
qualified expression on each dependent expression.

Compiling ce.adb must yield:

  ce.adb:33:21: warning: string length wrong for type "T" defined at line 5
  ce.adb:33:21: warning: "Constraint_Error" will be raised at run time
  ce.adb:37:39: warning: string length wrong for type "T" defined at line 5
  ce.adb:37:39: warning: "Constraint_Error" will be raised at run time
  ce.adb:38:39: warning: too few elements for type "T" defined at line 5
  ce.adb:38:39: warning: "Constraint_Error" will be raised at run time
  ce.adb:39:39: warning: too few elements for type "T" defined at line 5
  ce.adb:39:39: warning: "Constraint_Error" will be raised at run time
----
with Text_IO;
procedure Ce is

  package Aerodrome_Identifier is
    subtype T is String (1 .. 4);
  end;

  package Flight_Identifier is
    type T is
     record
       ADEP                : Aerodrome_Identifier.T;
       Counter             : Positive;
     end record;
  end;

  procedure Assign (X : Flight_Identifier.T) is
  begin
    Text_IO.Put_Line (X.ADEP); -- outputs the 4 zero bytes
  end;

  function Env_Aerodrome_Value return String is ("ABCD");
  function Void return String is ("What?");
  function Void2 return String is
  begin
    return "who knows";
  end;
  Here : Aerodrome_Identifier.T;
  type Four is range 1 .. 4;
  Nothing : String := "";
begin
  Assign((ADEP =>
       (if (Void'Length = 5)
               then "" --!! This value should always raise Constraint_Error !!
                  else Env_Aerodrome_Value & "!"),
        Counter=> 17));

   Here := (if (Void'Length = 5) then "" else Env_Aerodrome_Value);
   Here := (if (Void'Length = 5) then Nothing else Env_Aerodrome_Value);
   Here := (if (Void'Length = 5) then Void2 (1..3) else Void2 & Void);
end;
----

2018-11-14  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

* sem_res.adb (Resolve_If_Expression): Verify that the subtypes
of all dependent expressions obey the constraints of the
expected type for the if-expression.
(Analyze_Expression): Only add qualificiation to the dependent
expressions when the context type is constrained. Small
adjustment to previous patch.

From-SVN: r266128

6 years ago[Ada] Fix assertion failure on pragma Compile_Time_Error in generic unit
Eric Botcazou [Wed, 14 Nov 2018 11:41:53 +0000 (11:41 +0000)]
[Ada] Fix assertion failure on pragma Compile_Time_Error in generic unit

There is no point in validating 'Alignment or 'Size of an entity
declared in a generic unit after the back-end has been run, since such
an entity is not passed to the back-end, and this can even lead to an
assertion failure.

2018-11-14  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

* sem_prag.adb (Process_Compile_Time_Warning_Or_Error): Don't
register a compile-time warning or error for 'Alignment or 'Size
of an entity declared in a generic unit.

gcc/testsuite/

* gnat.dg/compile_time_error1.adb,
gnat.dg/compile_time_error1.ads,
gnat.dg/compile_time_error1_pkg.ads: New testcase.

From-SVN: r266127

6 years ago[Ada] Crash on use of generic formal package
Justin Squirek [Wed, 14 Nov 2018 11:41:46 +0000 (11:41 +0000)]
[Ada] Crash on use of generic formal package

This patch fixes an issue whereby a complicated set of generic formal
packages in conjunction with use_clauses may cause a crash during
visibility checking due to a homonym being out of scope during the
checking stage.

2018-11-14  Justin Squirek  <squirek@adacore.com>

gcc/ada/

* sem_ch8.adb (Use_One_Package): Add test for out-of-scope
homonyms.

gcc/testsuite/

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

From-SVN: r266126

6 years ago[Ada] Compiler crash on decl. with limited aggregate and address clause
Ed Schonberg [Wed, 14 Nov 2018 11:41:41 +0000 (11:41 +0000)]
[Ada] Compiler crash on decl. with limited aggregate and address clause

This patch fixes a compiler abort on an object declaration whose
expression is an aggregate, when the type of the object is limited and
the declaration is followed by an address clause for the declared
object.

2018-11-14  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

* exp_ch3.adb: (Expand_N_Object_Declaration): If the expression
is a limited aggregate its resolution is delayed until the
object declaration is expanded.
* sem_ch3.adb: (Analyze_Object_Declaration): If the expression
is a limited aggregate and the declaration has a following
address clause indicate that resolution of the aggregate (which
must be built in place) must be delayed.

gcc/testsuite/

* gnat.dg/limited_aggr.adb, gnat.dg/limited_aggr.ads: New
testcase.

From-SVN: r266125

6 years ago[Ada] System'To_Address not always static
Bob Duff [Wed, 14 Nov 2018 11:41:36 +0000 (11:41 +0000)]
[Ada] System'To_Address not always static

System'To_Address is supposed to be static when its parameter is static.
This patch fixes a bug in which it is considered nonstatic when used as
the initial value of a variable with the Thread_Local_Storage aspect, so
the compiler incorrectly gives an error when initializing such a
variable with System'To_Address (0).

2018-11-14  Bob Duff  <duff@adacore.com>

gcc/ada/

* sem_attr.adb (To_Address): Simplify setting of
Is_Static_Expression. Remove second (unconditional) call to
Set_Is_Static_Expression -- surely it's not static if the
operand is not.  Initialize Static on declaration.  Do not try
to fold 'To_Address, even though it's static.
* exp_attr.adb (To_Address): Preserve Is_Static_Expression.
* sinfo.ads, sem_eval.ads, sem_eval.adb (Is_Static_Expression,
Is_OK_Static_Expression, Raises_Constraint_Error): Simplify
documentation.  There was too much repetition and redundancy.

From-SVN: r266124

6 years ago[Ada] Enhance constraints propagation to ease the work of optimizers
Ed Schonberg [Wed, 14 Nov 2018 11:41:30 +0000 (11:41 +0000)]
[Ada] Enhance constraints propagation to ease the work of optimizers

This patch recognizes additional object declarations whose defining
identifier is known statically to be valid. This allows additional
optimizations to be performed by the front-end.

Executing:

   gcc -c -gnatDG p.ads

On the following sources:

----
with G;
With Q;

package P is

  Val : constant Positive := Q.Config_Value ("Size");

  package My_G is new G (Val);

end P;
----
generic

  Num : Natural := 0;

package G is

  Multi : constant Boolean := Num > 0;

  type Info is array (True .. Multi) of Integer;

  type Arr is array (Natural range <>) of Boolean;

  type Rec (D : Natural) is record
    C : character;
    I : Info;
    E : Arr (0 .. D);
  end record;

end G;
----
package Q is

  function Config_Value (S : String) return Integer;

end Q;
----

Must yield (note that variable Multi has been statically optimized to
true):

----
with g;
with q;
p_E : short_integer := 0;

package p is
   p__R2s : constant integer := q.q__config_value ("Size");
   [constraint_error when
     not (p__R2s >= 1)
     "range check failed"]
   p__val : constant positive := p__R2s;

   package p__my_g is
      p__my_g__num : constant natural := p__val;
      package p__my_g__g renames p__my_g;
      package p__my_g__gGH renames p__my_g__g;
      p__my_g__multi : constant boolean := true;
      type p__my_g__info is array (true .. p__my_g__multi) of integer;
      type p__my_g__arr is array (0 .. 16#7FFF_FFFF# range <>) of
        boolean;
      type p__my_g__rec (d : natural) is record
         c : character;
         i : p__my_g__info;
         e : p__my_g__arr (0 .. d);
      end record;
      [type p__my_g__TinfoB is array (true .. p__my_g__multi range <>) of
        integer]
      freeze p__my_g__TinfoB [
         procedure p__my_g__TinfoBIP (_init : in out p__my_g__TinfoB) is
         begin
            null;
            return;
         end p__my_g__TinfoBIP;
      ]
      freeze p__my_g__info []
      freeze p__my_g__arr [
         procedure p__my_g__arrIP (_init : in out p__my_g__arr) is
         begin
            null;
            return;
         end p__my_g__arrIP;
      ]
      freeze p__my_g__rec [
         procedure p__my_g__recIP (_init : in out p__my_g__rec; d :
           natural) is
         begin
            _init.d := d;
            null;
            return;
         end p__my_g__recIP;
      ]
   end p__my_g;

   package my_g is new g (p__val);
end p;

freeze_generic info
[subtype TinfoD1 is boolean range true .. multi]
freeze_generic TinfoD1
[type TinfoB is array (true .. multi range <>) of integer]
freeze_generic TinfoB
freeze_generic arr
freeze_generic rec
----

2018-11-14  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

* sem_ch3.adb (Analyze_Object_Declaration): Use the
Actual_Subtype to preserve information about a constant
initialized with a non-static entity that is known to be valid,
when the type of the entity has a narrower range than that of
the nominal subtype of the constant.
* checks.adb (Determine_Range): If the expression is a constant
entity that is known-valid and has a defined Actual_Subtype, use
it to determine the actual bounds of the value, to enable
additional optimizations.

From-SVN: r266123

6 years ago[Ada] Minor reformatting
Hristian Kirtchev [Wed, 14 Nov 2018 11:41:25 +0000 (11:41 +0000)]
[Ada] Minor reformatting

2018-11-14  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

* back_end.adb, checks.adb, exp_ch3.adb, exp_ch4.adb,
exp_ch7.adb, exp_disp.adb, exp_unst.adb, exp_util.adb,
freeze.adb, sem_ch13.adb, sem_ch6.adb, sem_ch7.adb,
sem_prag.adb, sem_spark.adb, sem_util.adb: Minor reformatting.

From-SVN: r266122

6 years ago[Ada] Renamed equality leads to spurious errors
Hristian Kirtchev [Wed, 14 Nov 2018 11:41:20 +0000 (11:41 +0000)]
[Ada] Renamed equality leads to spurious errors

The following patch corrects the search for the equality function to
handle cases where the equality could be a renaming of another routine.
No simple reproducer possible because this requires PolyORB.

2018-11-14  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

* exp_ch4.adb (Find_Aliased_Equality): New routine.
(Find_Equality): Reimplemented.
(Is_Equality): New routine.

From-SVN: r266121

6 years ago[Ada] Crash on ignored Ghost assignment
Hristian Kirtchev [Wed, 14 Nov 2018 11:41:14 +0000 (11:41 +0000)]
[Ada] Crash on ignored Ghost assignment

This patch modifies the way analysis determine whether an assignment is
an ignored Ghost assignment. This is now achieved by preanalyzing a copy
of the left hand side in order to account for potential code generated
by the left hand side itself.

No small reproducer possible.

2018-11-14  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

* ghost.adb (Ghost_Entity): New routine.
(Mark_And_Set_Ghost_Assignment): Reimplemented.
* sem_ch5.adb (Analyze_Assignment): Assess whether the target of
the assignment is an ignored Ghost entity before analyzing the
left hand side.
* sem_ch8.adb (Find_Direct_Name): Update the subprogram
signature. Do not generate markers and references when they are
not desired.
(Nvis_Messages): Do not execute when errors are not desired.
(Undefined): Do not emit errors when they are not desired.
* sem_ch8.ads (Find_Direct_Name): Update the subprogram
signature and comment on usage.
* sem_util.adb (Ultimate_Prefix): New routine.
* sem_util.ads (Ultimate_Prefix): New routine.

From-SVN: r266120

6 years ago[Ada] Visibility error on used enumerated type
Justin Squirek [Wed, 14 Nov 2018 11:41:09 +0000 (11:41 +0000)]
[Ada] Visibility error on used enumerated type

This patch fixes an issue whereby the freezing of a nested package
containing an enumerated type declaration would cause visibility errors
on literals of such type when a use_all_type_clause for it appears
within the same declarative region.

2018-11-14  Justin Squirek  <squirek@adacore.com>

gcc/ada/

* sem_ch7.adb (Uninstall_Declarations): Add conditional to avoid
uninstalling potential visibility during freezing on enumeration
literals.

gcc/testsuite/

* gnat.dg/enum5.adb: New testcase.

From-SVN: r266119

6 years ago[Ada] Do not include crt_externs.h on iOS
Jerome Lambourg [Wed, 14 Nov 2018 11:41:04 +0000 (11:41 +0000)]
[Ada] Do not include crt_externs.h on iOS

2018-11-14  Jerome Lambourg  <lambourg@adacore.com>

gcc/ada/

* env.c: Do not include crt_externs.h on iOS, as it does not
exist there. This is also true for the iPhone Simulator SDK.

From-SVN: r266118

6 years ago[Ada] Unnesting transformations for blocks in package bodies
Ed Schonberg [Wed, 14 Nov 2018 11:40:59 +0000 (11:40 +0000)]
[Ada] Unnesting transformations for blocks in package bodies

The declarations in the package body may have created blocks with nested
subprograms. Such a block must be transformed into a procedure followed
by a call to it, so that unnesting can handle uplevel references within
these nested subprograms (typically generated subprograms to handle
finalization actions).

2018-11-14  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

* exp_ch7.adb (Check_Unnesting_In_Declarations): New procedure
to transform blocks that appear in the declarative part of a
package body into subprograms if they contain generated
subprograms (such as finalization routines). Needed to generate
the proper upward references in unnesting mode.

From-SVN: r266117

6 years ago[Ada] Improper extension of bounds of fixed-point type
Ed Schonberg [Wed, 14 Nov 2018 11:40:52 +0000 (11:40 +0000)]
[Ada] Improper extension of bounds of fixed-point type

If the given Delta of an ordinariy fixed-point type is not a machine
number and there is no specified 'Small for the type, the compiler
chooses the actual bounds of the type using the nearest model numbers
that include the given bounds, but it is free to exclude those bounds if
a size clause restricts the number of bits to use for the type. This
patch fixes an error in the case where the bounds of the type can be
chosen to be larger than the bounds specified in the type declaration:
prior to this patch the lower bounds could be chosen to be one delta
smaller that the given bound, when that given bound was smaller than the
nearest machine number,

Compiling rep2.adb must yield:

   rep2.adb:7:24:
       warning: value not in range of type "Test_Type" defined at line 4
   rep2.adb:7:24:
       warning: "Constraint_Error" will be raised at run time

----
with Ada.Text_IO; use Ada.Text_IO;
procedure Rep2 is

   type    Test_Type is delta 0.1 range 0.1 .. 100.0 with Size => 16;
   subtype Next_Type is Test_Type range 0.1 .. 100.0;

   Item : Test_Type := 0.0;                        -- Why is this allowed?
   Next : Next_Type with Address => Item'Address;

begin

   Put_Line (Item'Img & " - " & Item'Valid'Img);  -- Returns "0.0 - TRUE"
   Put_Line (Next'Img & " - " & Next'Valid'Img);  -- Returns "0.0 - FALSE"

end Rep2;

2018-11-14  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

* freeze.adb (Freeze_Fixed_Point_Type): If the given low bound
of the type is less than the nearest model number, do not expand
the range of the type to include the model number below the
bound. Similar adjustment if the upper bound is larger than the
nearest model number.

From-SVN: r266116

6 years ago[Ada] Limited function violates No_Exception_Propagation
Hristian Kirtchev [Wed, 14 Nov 2018 11:40:47 +0000 (11:40 +0000)]
[Ada] Limited function violates No_Exception_Propagation

This patch suppresses the generation of raise statements in the context
of build-in-place and elaboration checks for primitives of tagged types
when exceptions cannot be used.

2018-11-14  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

* checks.adb (Install_Primitive_Elaboration_Check): Do not
create the check when exceptions cannot be used.
* exp_ch6.adb (Expand_N_Extended_Return_Statement): Do not raise
Program_Errror when exceptions cannot be used. Analyze the
generated code with all checks suppressed.
* exp_ch7.adb (Build_Finalizer): Remove the declaration of
Exceptions_OK.
(Make_Deep_Array_Body): Remove the declaration of Exceptions_OK.
(Make_Deep_Record_Body): Remove the declaration of
Exceptions_OK.
(Process_Transients_In_Scope): Remove the declaration of
Exceptions_OK.
* exp_util.adb (Exceptions_In_Finalization_OK): Renamed to
Exceptions_OK.
* exp_util.ads (Exceptions_In_Finalization_OK): Renamed to
Exceptions_OK.

gcc/testsuite/

* gnat.dg/bip_exception.adb, gnat.dg/bip_exception.ads,
gnat.dg/bip_exception_pkg.ads: New testcase.

From-SVN: r266115

6 years ago[Ada] Crash on tagged equality
Hristian Kirtchev [Wed, 14 Nov 2018 11:40:41 +0000 (11:40 +0000)]
[Ada] Crash on tagged equality

This patch corrects the retrieval of the equality function when it is
inherited from a parent tagged type.

2018-11-14  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

* exp_ch4.adb (Expand_N_Op_Eq): Remove duplicated code and use
routine Find_Equality instead.
(Find_Equality): New routine.

gcc/testsuite/

* gnat.dg/equal4.adb, gnat.dg/equal4.ads,
gnat.dg/equal4_controlled_filter.ads,
gnat.dg/equal4_full_selector_filter.ads,
gnat.dg/equal4_smart_pointers.ads: New testcase.

From-SVN: r266114

6 years ago[Ada] Record components do not appear in the Global contract
Piotr Trojanek [Wed, 14 Nov 2018 11:40:35 +0000 (11:40 +0000)]
[Ada] Record components do not appear in the Global contract

In the Global contract there can be only entire objects, which are
represented either as N_Identifier or N_Expanded_Name. The test for
record components was dead. Now removed. Semantics unaffected.

2018-11-14  Piotr Trojanek  <trojanek@adacore.com>

gcc/ada/

* sem_util.adb (First_From_Global_List): Do not expect
N_Selected_Component in the Global contract; simplify assertion
with Nam_In.

From-SVN: r266113

6 years ago[Ada] Fix handling of generic actuals with default expression in SPARK
Piotr Trojanek [Wed, 14 Nov 2018 11:40:30 +0000 (11:40 +0000)]
[Ada] Fix handling of generic actuals with default expression in SPARK

Both in the GNAT frontend and in the GNATprove backend we have
several checks related to generic actuals of mode IN that rely on the
Corresponding_Generic_Association flag. However, this flag was only set
for actuals with explicit expressions from the generic instance and unset
for actuals with implicit expressions from the generic unit.

For example, the code from the added testcase was wrongly rejected with
a message that Y (which is an actual with a default expression) cannot
appear in the Initializes contract. Now this code is accepted.

2018-11-14  Piotr Trojanek  <trojanek@adacore.com>

gcc/ada/

* sem_ch12.adb (Instantiate_Object): Set
Corresponding_Generic_Association on generic actuals with
default expression.
* sinfo.ads (Corresponding_Generic_Association): Update comment.

gcc/testsuite/

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

From-SVN: r266112

6 years ago[Ada] Lingering loop for ignored Ghost assignment
Hristian Kirtchev [Wed, 14 Nov 2018 11:40:25 +0000 (11:40 +0000)]
[Ada] Lingering loop for ignored Ghost assignment

The following patch ensures that loops generated for aggregates as part
of ignored Ghost assignments are correctly eliminated from the generated
code.

------------
-- Source --
------------

--  pack.ads

package Pack is
   type addr4k is new Integer range 0 .. 100 with Size => 32;

   type Four_KB_Page_Property is record
      Is_Scrubbed : Boolean := False;
   end record with Ghost;

   type Four_KB_Page_Array is
     array (addr4k range <>) of Four_KB_Page_Property with Ghost;

   type Base_Memory is tagged record
      Four_KB_Pages : Four_KB_Page_Array (addr4k) :=
                        (others => (Is_Scrubbed => False));
   end record with Ghost;

   subtype Memory is Base_Memory with Ghost;
   Global_Memory : Memory with Ghost;

   procedure Assign;
end Pack;

--  pack.adb

package body Pack is
   procedure Assign is
   begin
      Global_Memory.Four_KB_Pages := (others => (Is_Scrubbed => True));
   end Assign;
end Pack;

----------------------------
-- Compilation and output --
----------------------------

$ gcc -c -gnatDG pack.adb
$ grep -c "loop" pack.adb.dg
0

2018-11-14  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

* exp_ch4.adb (Expand_Concatenate): Use the proper routine to
set the need for debug info.
* exp_dbug.adb (Build_Subprogram_Instance_Renamings): Use the
proper routine to set the need for debug info.
* exp_prag.adb (Expand_Pragma_Initial_Condition): Use the proper
routine to set the need for debug info.
* exp_util.adb (Build_DIC_Procedure_Declaration): Use the proper
routine to set the need for debug info.
(Build_Invariant_Procedure_Declaration): Use the proper routine
to set the need for debug info.
* ghost.adb (Record_Ignored_Ghost_Node): Add statements as a
whole class to the list of top level ignored Ghost nodes.
* sem_util.adb (Set_Debug_Info_Needed): Do not generate debug
info for an ignored Ghost entity.

From-SVN: r266111

6 years ago[Ada] Use Cancel_Special_Output instead of Set_Special_Output with null
Piotr Trojanek [Wed, 14 Nov 2018 11:40:20 +0000 (11:40 +0000)]
[Ada] Use Cancel_Special_Output instead of Set_Special_Output with null

I believe Cancel_Special_Output is easier to read and thus preferred;
otherwise, it wouldn't be introduced, so let's use it where possible.

2018-11-14  Piotr Trojanek  <trojanek@adacore.com>

gcc/ada/

* bindgen.adb, exp_cg.adb, repinfo.adb, sprint.adb: Minor reuse
Cancel_Special_Output where possible.

From-SVN: r266110

6 years ago[Ada] Fix parentheses in comments and "library-level" punctuation
Piotr Trojanek [Wed, 14 Nov 2018 11:40:14 +0000 (11:40 +0000)]
[Ada] Fix parentheses in comments and "library-level" punctuation

When acting as an adjective, it is "library-level something"; when
acting as a noun, it is "something at the library level".

2018-11-14  Piotr Trojanek  <trojanek@adacore.com>

gcc/ada/

* exp_dbug.ads, sem_util.ads: Minor fixes in comments.

From-SVN: r266109

6 years ago[Ada] Handle -gx switches explicitly
Arnaud Charlet [Wed, 14 Nov 2018 11:40:09 +0000 (11:40 +0000)]
[Ada] Handle -gx switches explicitly

2018-11-14  Arnaud Charlet  <charlet@adacore.com>

gcc/ada/

* adabkend.adb (Scan_Back_End_Switches): Handle -gx switches
explicitly.

From-SVN: r266108

6 years agore PR tree-optimization/88019 (ICE in gimplify_modify_expr, at gimplify.c:5779)
Richard Biener [Wed, 14 Nov 2018 11:11:05 +0000 (11:11 +0000)]
re PR tree-optimization/88019 (ICE in gimplify_modify_expr, at gimplify.c:5779)

2018-11-14  Richard Biener  <rguenther@suse.de>

PR tree-optimization/88019
* graphite-isl-ast-to-gimple.c (ternary_op_to_tree): Rewrite
COND_EXPR arguments to non-trapping overflow.

From-SVN: r266105

6 years ago[ARC] Cleanup, fix and set LRA default.
Claudiu Zissulescu [Wed, 14 Nov 2018 09:45:39 +0000 (10:45 +0100)]
[ARC] Cleanup, fix and set LRA default.

LP_COUNT register cannot be freely allocated by the compiler as it
size, and/or content may change depending on the ARC hardware
configuration. Thus, make this register fixed.

Remove register classes and unused constraint letters.

Cleanup the implementation of conditional_register_usage hook by using
macros instead of magic constants and removing all references to
reg_class_contents which are bringing so much grief when lra is enabled.

gcc/
xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

* config/arc/arc.h (reg_class): Reorder registers classes, remove
unused register classes.
(REG_CLASS_NAMES): Likewise.
(REG_CLASS_CONTENTS): Likewise.
(FIXED_REGISTERS): Make lp_count fixed.
(BASE_REG_CLASS): Remove ACC16_BASE_REGS reference.
(PROGRAM_COUNTER_REGNO): Remove.
* config/arc/arc.c (arc_conditional_register_usage): Remove unused
register classes, use constants for register numbers, remove
reg_class_contents references.
(arc_process_double_reg_moves): Add asserts.
(arc_secondary_reload): Remove LPCOUNT_REG reference, use
lra_in_progress predicate.
(arc_init_reg_tables): Remove unused register classes.
(arc_register_move_cost): Likewise.
(arc_preferred_reload_class): Likewise.
(hwloop_optimize): Update rtx patterns involving lp_count
register.
(arc_return_address_register): Rename ILINK1, INLINK2 regnums
macros.
* config/arc/constraints.md ("c"): Choose between GENERAL_REGS and
CHEAP_CORE_REGS.  Former one will be used for LRA.
("Rac"): Choose between GENERAL_REGS and ALL_CORE_REGS.  Former
one will be used for LRA.
("w"): Choose between GENERAL_REGS and WRITABLE_CORE_REGS.  Former
one will be used for LRA.
("W"): Choose between GENERAL_REGS and MPY_WRITABLE_CORE_REGS.
Former one will be used for LRA.
("f"): Delete constraint.
("k"): Likewise.
("e"): Likewise.
("l"): Change it from register constraint to constraint.
* config/arc/arc.md (movqi_insn): Remove unsed lp_count constraints.
(movhi_insn): Likewise.
(movsi_insn): Update pattern.
(arc_lp): Likewise.
(dbnz): Likewise.
(stack_tie): Remove 'b' constraint letter.
(R4_REG): Define.
(R9_REG, R15_REG, R16_REG, R25_REG): Likewise.
(R32_REG, R40_REG, R41_REG, R42_REG, R43_REG, R44_REG): Likewise.
(R57_REG, R59_REG, PCL_REG): Likewise.
(ILINK1_REGNUM): Renamed to ILINK1_REG.
(ILINK2_REGNUM): Renamed to ILINK2_REG.
(Rgp): Remove.
(SP_REGS): Likewise.
(Rcw): Remove unused reg classes.
* config/arc/predicates.md (dest_reg_operand): Just default on
register_operand predicate.
(mpy_dest_reg_operand): Likewise.
(move_dest_operand): Use macros instead of constants.

From-SVN: r266100

6 years agore PR tree-optimization/87974 (ICE in vect_get_vec_def_for_stmt_copy)
Richard Biener [Wed, 14 Nov 2018 09:19:28 +0000 (09:19 +0000)]
re PR tree-optimization/87974 (ICE in vect_get_vec_def_for_stmt_copy)

2018-11-14  Richard Biener  <rguenther@suse.de>

PR tree-optimization/87974
* tree-vect-loop.c (vectorizable_reduction): When computing
the vectorized reduction PHI vector type ignore constant
and external defs.

* g++.dg/opt/pr87974.C: New testcase.

From-SVN: r266099

6 years agore PR tree-optimization/87977 (ICE: verify_ssa failed (error: definition in block...
Jakub Jelinek [Wed, 14 Nov 2018 09:01:47 +0000 (10:01 +0100)]
re PR tree-optimization/87977 (ICE: verify_ssa failed (error: definition in block 4 follows the use))

PR tree-optimization/87977
* tree-ssa-math-opts.c (optimize_recip_sqrt): Don't reuse division
stmt, build a new one and replace the old one with it.  Formatting fix.
Call release_ssa_name (x) if !has_other_use and !delete_div.
(pass_cse_reciprocals::execute): Before calling optimize_recip_sqrt
verify lhs of stmt is still def.

* gcc.dg/recip_sqrt_mult_1.c: Add -fcompare-debug to dg-options.
* gcc.dg/recip_sqrt_mult_2.c: Likewise.
* gcc.dg/recip_sqrt_mult_3.c: Likewise.
* gcc.dg/recip_sqrt_mult_4.c: Likewise.
* gcc.dg/recip_sqrt_mult_5.c: Likewise.

From-SVN: r266098

6 years agore PR rtl-optimization/87507 (IRA unnecessarily uses non-volatile registers during...
Peter Bergner [Wed, 14 Nov 2018 02:17:35 +0000 (02:17 +0000)]
re PR rtl-optimization/87507 (IRA unnecessarily uses non-volatile registers during register assignment)

gcc/
PR rtl-optimization/87507
* lower-subreg.c (operand_for_swap_move_operator): New function.
(simple_move): Strip simple operators.
(find_pseudo_copy): Likewise.
(resolve_operand_for_swap_move_operator): New function.
(resolve_simple_move): Strip simple operators and swap operands.

gcc/testsuite/
PR rtl-optimization/87507
* gcc.target/powerpc/pr87507.c: New test.
* gcc.target/powerpc/pr68805.c: Update expected results.

From-SVN: r266097

6 years agoDaily bump.
GCC Administrator [Wed, 14 Nov 2018 00:16:31 +0000 (00:16 +0000)]
Daily bump.

From-SVN: r266096

6 years agore PR tree-optimization/87898 (ICE in separate_decls_in_region_debug, at tree-parloop...
Jakub Jelinek [Wed, 14 Nov 2018 00:02:35 +0000 (01:02 +0100)]
re PR tree-optimization/87898 (ICE in separate_decls_in_region_debug, at tree-parloops.c:961)

PR tree-optimization/87898
* omp-simd-clone.c (ipa_simd_modify_stmt_ops): Formatting fix.
(ipa_simd_modify_function_body): Remove debug stmts where the first
argument was changed into a non-decl.

* gcc.dg/gomp/pr87898.c: New test.

From-SVN: r266093

6 years agoFix error when selecting number of memory pools
Jonathan Wakely [Tue, 13 Nov 2018 23:44:39 +0000 (23:44 +0000)]
Fix error when selecting number of memory pools

* src/c++17/memory_resource.cc (select_num_pools): Fix off-by-one
error when block_size is equal to one of the values in the array.

From-SVN: r266092

6 years agoFix unused parameter warnings introduced in earlier patch
Jonathan Wakely [Tue, 13 Nov 2018 23:02:22 +0000 (23:02 +0000)]
Fix unused parameter warnings introduced in earlier patch

* src/c++17/memory_resource.cc (_Pool::deallocate): Restore
attributes to parameters that are only used in assertions.

From-SVN: r266091

6 years agoRemove redundant loop in unsynchronized_pool_resource code
Jonathan Wakely [Tue, 13 Nov 2018 22:58:00 +0000 (22:58 +0000)]
Remove redundant loop in unsynchronized_pool_resource code

* src/c++17/memory_resource.cc (bitset::find_first_unset()): Remove
unused function.
(bitset::get_first_unset()): Remove loop, if there's are unset bits
then _M_next_word refers to the first one and there's no need to loop.
(_Pool::_Pool(size_t, size_t), _Pool::block_size()): Remove dead code.

From-SVN: r266090

6 years agoImprove handling of pool_options::largest_required_pool_block
Jonathan Wakely [Tue, 13 Nov 2018 22:57:53 +0000 (22:57 +0000)]
Improve handling of pool_options::largest_required_pool_block

Make the munge_options function round the largest_required_pool_block
value to a multiple of the smallest pool size (currently 8 bytes) to
avoid pools with odd sizes.

Ensure there is a pool large enough for blocks of the requested size.
Previously when largest_required_pool_block was exactly equal to one of
the pool_sizes[] values there would be no pool of that size. This patch
increases _M_npools by one, so there is a pool at least as large as the
requested value. It also reduces the size of the largest pool to be no
larger than needed.

* src/c++17/memory_resource.cc (munge_options): Round up value of
largest_required_pool_block to multiple of smallest pool size. Round
excessively large values down to largest pool size.
(select_num_pools): Increase number of pools by one unless it exactly
matches requested largest_required_pool_block.
(__pool_resource::_M_alloc_pools()): Make largest pool size equal
largest_required_pool_block.
* testsuite/20_util/unsynchronized_pool_resource/options.cc: Check
that pool_options::largest_required_pool_block is set appropriately.

From-SVN: r266089

6 years agoFix incorrect assertion when deallocating big block
Jonathan Wakely [Tue, 13 Nov 2018 22:57:48 +0000 (22:57 +0000)]
Fix incorrect assertion when deallocating big block

Since a big_block rounds up the size to a multiple of big_block::min it
is wrong to assert that the supplied number of bytes equals the
big_block's size(). Add big_block::alloc_size(size_t) to calculate the
allocated size consistently, and add comments to the code.

* src/c++17/memory_resource.cc (big_block): Improve comments.
(big_block::all_ones): Remove.
(big_block::big_block(size_t, size_t)): Use alloc_size.
(big_block::size()): Add comment, replace all_ones with equivalent
expression.
(big_block::align()): Shift value of correct type.
(big_block::alloc_size(size_t)): New function to round up size.
(__pool_resource::allocate(size_t, size_t)): Add comment.
(__pool_resource::deallocate(void*, size_t, size_t)): Likewise. Fix
incorrect assertion by using big_block::alloc_size(size_t).
* testsuite/20_util/unsynchronized_pool_resource/allocate.cc: Add
more tests for unpooled allocations.

From-SVN: r266088

6 years agoFix overflows in std::pmr::unsynchonized_pool_resource
Jonathan Wakely [Tue, 13 Nov 2018 22:57:44 +0000 (22:57 +0000)]
Fix overflows in std::pmr::unsynchonized_pool_resource

* src/c++17/memory_resource.cc (bitset::full()): Handle edge case
for _M_next_word maximum value.
(bitset::get_first_unset(), bitset::set(size_type)): Use
update_next_word() to update _M_next_word.
(bitset::update_next_word()): New function, avoiding wraparound of
unsigned _M_next_word member.
(bitset::max_word_index()): New function.
(chunk::chunk(void*, uint32_t, void*, size_t)): Add assertion.
(chunk::max_bytes_per_chunk()): New function.
(pool::replenish(memory_resource*, const pool_options&)): Prevent
_M_blocks_per_chunk from exceeding max_blocks_per_chunk or from
causing chunk::max_bytes_per_chunk() to be exceeded.
* testsuite/20_util/unsynchronized_pool_resource/allocate-max-chunks.cc:
New test.

From-SVN: r266087

6 years agore PR middle-end/87899 (r264897 cause mis-compiled native arm-linux-gnueabihf toolchain)
Peter Bergner [Tue, 13 Nov 2018 22:14:11 +0000 (22:14 +0000)]
re PR middle-end/87899 (r264897 cause mis-compiled native arm-linux-gnueabihf toolchain)

gcc/
PR rtl-optimization/87899
* lra-lives.c (start_living): Update white space in comment.
(enum point_type): New.
(sparseset_contains_pseudos_p): New function.
(update_pseudo_point): Likewise.
(make_hard_regno_live): Use HARD_REGISTER_NUM_P macro.
(make_hard_regno_dead): Likewise.  Remove ignore_reg_for_conflicts
handling.  Move early exit after adding conflicts.
(mark_pseudo_live): Use HARD_REGISTER_NUM_P macro.  Add early exit
if regno is already live.  Remove all handling of program points.
(mark_pseudo_dead): Use HARD_REGISTER_NUM_P macro.  Add early exit
after adding conflicts.  Remove all handling of program points and
ignore_reg_for_conflicts.
(mark_regno_live): Use HARD_REGISTER_NUM_P macro.  Remove return value
and do not guard call to mark_pseudo_live.
(mark_regno_dead): Use HARD_REGISTER_NUM_P macro.  Remove return value
and do not guard call to mark_pseudo_dead.
(check_pseudos_live_through_calls): Use HARD_REGISTER_NUM_P macro.
(process_bb_lives): Use HARD_REGISTER_NUM_P and HARD_REGISTER_P macros.
Use new function update_pseudo_point.  Handle register copies by
removing the source register from the live set.  Handle INOUT operands.
Update to the next program point using the unused_set, dead_set and
start_dying sets.
(lra_create_live_ranges_1): Use HARD_REGISTER_NUM_P macro.

From-SVN: r266086

6 years agoEliminate source_location in favor of location_t
David Malcolm [Tue, 13 Nov 2018 20:05:03 +0000 (20:05 +0000)]
Eliminate source_location in favor of location_t

Historically GCC used location_t, while libcpp used source_location.

This inconsistency has been annoying me for a while, so this patch
removes source_location in favor of location_t throughout
(as the latter is shorter).

gcc/ChangeLog:
* builtins.c: Replace "source_location" with "location_t".
* diagnostic-show-locus.c: Likewise.
* diagnostic.c: Likewise.
* dumpfile.c: Likewise.
* gcc-rich-location.h: Likewise.
* genmatch.c: Likewise.
* gimple.h: Likewise.
* gimplify.c: Likewise.
* input.c: Likewise.
* input.h: Likewise.  Eliminate the typedef.
* omp-expand.c: Likewise.
* selftest.h: Likewise.
* substring-locations.h (get_source_location_for_substring):
Rename to..
(get_location_within_string): ...this.
* tree-cfg.c: Replace "source_location" with "location_t".
* tree-cfgcleanup.c: Likewise.
* tree-diagnostic.c: Likewise.
* tree-into-ssa.c: Likewise.
* tree-outof-ssa.c: Likewise.
* tree-parloops.c: Likewise.
* tree-phinodes.c: Likewise.
* tree-phinodes.h: Likewise.
* tree-ssa-loop-ivopts.c: Likewise.
* tree-ssa-loop-manip.c: Likewise.
* tree-ssa-phiopt.c: Likewise.
* tree-ssa-phiprop.c: Likewise.
* tree-ssa-threadupdate.c: Likewise.
* tree-ssa.c: Likewise.
* tree-ssa.h: Likewise.
* tree-vect-loop-manip.c: Likewise.

gcc/c-family/ChangeLog:
* c-common.c (c_get_substring_location): Update for renaming of
get_source_location_for_substring to get_location_within_string.
* c-lex.c: Replace "source_location" with "location_t".
* c-opts.c: Likewise.
* c-ppoutput.c: Likewise.

gcc/c/ChangeLog:
* c-decl.c: Replace "source_location" with "location_t".
* c-tree.h: Likewise.
* c-typeck.c: Likewise.
* gimple-parser.c: Likewise.

gcc/cp/ChangeLog:
* call.c: Replace "source_location" with "location_t".
* cp-tree.h: Likewise.
* cvt.c: Likewise.
* name-lookup.c: Likewise.
* parser.c: Likewise.
* typeck.c: Likewise.

gcc/fortran/ChangeLog:
* cpp.c: Replace "source_location" with "location_t".
* gfortran.h: Likewise.

gcc/go/ChangeLog:
* go-gcc-diagnostics.cc: Replace "source_location" with "location_t".
* go-gcc.cc: Likewise.
* go-linemap.cc: Likewise.
* go-location.h: Likewise.
* gofrontend/README: Likewise.

gcc/jit/ChangeLog:
* jit-playback.c: Replace "source_location" with "location_t".

gcc/testsuite/ChangeLog:
* g++.dg/plugin/comment_plugin.c: Replace "source_location" with
"location_t".
* gcc.dg/plugin/diagnostic_plugin_test_show_locus.c: Likewise.

libcc1/ChangeLog:
* libcc1plugin.cc: Replace "source_location" with "location_t".
(plugin_context::get_source_location): Rename to...
(plugin_context::get_location_t): ...this.
* libcp1plugin.cc: Likewise.

libcpp/ChangeLog:
* charset.c: Replace "source_location" with "location_t".
* directives-only.c: Likewise.
* directives.c: Likewise.
* errors.c: Likewise.
* expr.c: Likewise.
* files.c: Likewise.
* include/cpplib.h: Likewise.  Rename MAX_SOURCE_LOCATION to
MAX_LOCATION_T.
* include/line-map.h: Likewise.
* init.c: Likewise.
* internal.h: Likewise.
* lex.c: Likewise.
* line-map.c: Likewise.
* location-example.txt: Likewise.
* macro.c: Likewise.
* pch.c: Likewise.
* traditional.c: Likewise.

From-SVN: r266085

6 years agoPR middle-end/81824 - Warn for missing attributes with function aliases
Martin Sebor [Tue, 13 Nov 2018 19:57:51 +0000 (19:57 +0000)]
PR middle-end/81824 - Warn for missing attributes with function aliases

gcc/c-family/ChangeLog:

* c-attribs.c (handle_copy_attribute): Exclude inlining attributes.
(handle_tls_model_attribute): Improve diagnostics.

gcc/testsuite/ChangeLog:

* gcc.dg/attr-copy-5.c: New test.
* gcc.dg/tls/diag-6.c: Adjust expected diagnostics.

From-SVN: r266084

6 years agoextend.texi: Fix typo in the weakref description.
Michael Ploujnikov [Tue, 13 Nov 2018 19:30:00 +0000 (19:30 +0000)]
extend.texi: Fix typo in the weakref description.

2018-11-13  Michael Ploujnikov  <michael.ploujnikov@oracle.com>

* doc/extend.texi: Fix typo in the weakref description.

From-SVN: r266083

6 years agoFix ChangeLog entry for r266080
David Malcolm [Tue, 13 Nov 2018 16:30:01 +0000 (16:30 +0000)]
Fix ChangeLog entry for r266080

From-SVN: r266082

6 years agore PR tree-optimization/86991 (ICE in vectorizable_reduction, at tree-vect-loop.c...
Richard Biener [Tue, 13 Nov 2018 16:14:37 +0000 (16:14 +0000)]
re PR tree-optimization/86991 (ICE in vectorizable_reduction, at tree-vect-loop.c:6919)

2018-11-13  Richard Biener  <rguenther@suse.de>

PR tree-optimization/86991
* tree-vect-loop.c (vect_is_slp_reduction): Delay reduction
group building until we have successfully detected the SLP
reduction.
(vect_is_simple_reduction): Remove fixup code here.

* gcc.dg/pr86991.c: New testcase.

From-SVN: r266081

6 years agoEnsure that dump calls are guarded with dump_enabled_p
David Malcolm [Tue, 13 Nov 2018 16:10:13 +0000 (16:10 +0000)]
Ensure that dump calls are guarded with dump_enabled_p

If called when !dump_enabled_p, the dump_* functions effectively do
nothing, but as of r263178 this doing "nothing" involves non-trivial
work internally.

I wasn't sure whether the dump_* functions should assert that
  dump_enabled_p ()
is true when they're called, or if they should bail out immediately
for this case, so in this patch I implemented both, so that we get
an assertion failure, and otherwise bail out for the case where
!dump_enabled_p when assertions are disabled.

The patch also fixes all of the places I found during testing
(on x86_64-pc-linux-gnu) that call into dump_* but which
weren't guarded by
  if (dump_enabled_p ())

gcc/ChangeLog:
* dumpfile.c (VERIFY_DUMP_ENABLED_P): New macro.
(dump_gimple_stmt): Use it.
(dump_gimple_stmt_loc): Likewise.
(dump_gimple_expr): Likewise.
(dump_gimple_expr_loc): Likewise.
(dump_generic_expr): Likewise.
(dump_generic_expr_loc): Likewise.
(dump_printf): Likewise.
(dump_printf_loc): Likewise.
(dump_dec): Likewise.
(dump_dec): Likewise.
(dump_hex): Likewise.
(dump_symtab_node): Likewise.

gcc/ChangeLog:
* gimple-loop-interchange.cc (tree_loop_interchange::interchange):
Guard dump call with dump_enabled_p.
* graphite-isl-ast-to-gimple.c (graphite_regenerate_ast_isl): Likewise.
* graphite-optimize-isl.c (optimize_isl): Likewise.
* graphite.c (graphite_transform_loops): Likewise.
* tree-loop-distribution.c (pass_loop_distribution::execute): Likewise.
* tree-parloops.c (parallelize_loops): Likewise.
* tree-ssa-loop-niter.c (number_of_iterations_exit): Likewise.
* tree-vect-data-refs.c (vect_analyze_group_access_1): Likewise.
(vect_prune_runtime_alias_test_list): Likewise.
* tree-vect-loop.c (vect_update_vf_for_slp): Likewise.
(vect_estimate_min_profitable_iters): Likewise.
* tree-vect-slp.c (vect_record_max_nunits): Likewise.
(vect_build_slp_tree_2): Likewise.
(vect_supported_load_permutation_p): Likewise.
(vect_slp_analyze_operations): Likewise.
(vect_slp_analyze_bb_1): Likewise.
(vect_slp_bb): Likewise.
* tree-vect-stmts.c (vect_analyze_stmt): Likewise.
* tree-vectorizer.c (try_vectorize_loop_1): Likewise.
(pass_slp_vectorize::execute): Likewise.
(increase_alignment): Likewise.

From-SVN: r266080

6 years agoFix ICE with -fopt-info-inline (PR ipa/87955)
David Malcolm [Tue, 13 Nov 2018 15:59:57 +0000 (15:59 +0000)]
Fix ICE with -fopt-info-inline (PR ipa/87955)

PR ipa/87955 reports a problem I introduced in r265920, where I converted
the guard in report_inline_failed_reason from using:
  if (dump_file)
to using
  if (dump_enabled_p ()).
without updating the calls to cl_target_option_print_diff and
cl_optimization_print_diff, which assume that dump_file is non-NULL.

The functions are auto-generated.  Rather than porting them to the dump
API, this patch applies the workaround of adding the missing checks on
dump_file before calling them.

gcc/ChangeLog:
PR ipa/87955
* ipa-inline.c (report_inline_failed_reason): Guard calls to
cl_target_option_print_diff and cl_optimization_print_diff with
if (dump_file).

gcc/testsuite/ChangeLog:
PR ipa/87955
* gcc.target/i386/pr87955.c: New test.

From-SVN: r266079