gcc.git
5 years ago[RS6000] PR88346, Inconsistent list of CPUs supported after r266502
Alan Modra [Sun, 23 Dec 2018 13:28:20 +0000 (23:58 +1030)]
[RS6000] PR88346, Inconsistent list of CPUs supported after r266502

This patch removes the %e error for AIX, since it seems there has been
no attempt to keep cpu support up to date for AIX, and adds missing
entries to ASM_CPU_SPEC in rs6000.h.  The rs64a->rs64 name change
happened a long time ago as a fix for PR20813 (git commit c92b4c3f5b).

PR 88346
* config/rs6000/rs6000.h (ASM_CPU_SPEC): Correct %e message.  Handle
-mcpu=rs64, not -mcpu=rs64a.  Handle -mcpu=powerpc64 and -mcpu=titan.
* config/rs6000/driver-rs6000.c (asm_names): Similarly.
* config/rs6000/aix71.h (ASM_CPU_SPEC): Delete %e message.  Handle
-mcpu=rs64, not -mcpu=rs64a.
* config/rs6000/aix72.h (ASM_CPU_SPEC): Likewise.

From-SVN: r267375

5 years agoFix Ada bootstrap for Darwin9 and earlier.
Iain Sandoe [Sun, 23 Dec 2018 12:51:52 +0000 (12:51 +0000)]
Fix Ada bootstrap for Darwin9 and earlier.

2018-12-23  Iain Sandoe  <iain@sandoe.co.uk>

gcc/ada/

* adaint.c [__APPLE__] (__gnat_lwp_self): Ensure that the system
interface used is available on the target.

From-SVN: r267374

5 years agoLTO-wrapper, don't pre-link early debug objects.
Iain Sandoe [Sun, 23 Dec 2018 12:43:47 +0000 (12:43 +0000)]
LTO-wrapper, don't pre-link early debug objects.

Pass them to the final link, the pre-link wasn't effective.
Make the temp filenames easier to follow.
Also save them in the CWD when save-temps is given.

2018-12-23  Iain Sandoe  <iain@sandoe.co.uk>

* lto-wrapper.c (tool_cleanup): Don’t report ficticious temp files.
(debug_objcopy): Improve temp filenames.  Append the early
debug objects to the outfiles.  Remove the phase prelinking the
early debug. Emit the early debug filenames for ld.

From-SVN: r267373

5 years agoFix ident tests by Enabling ident output for X86 Darwin.
Iain Sandoe [Sun, 23 Dec 2018 11:04:14 +0000 (11:04 +0000)]
Fix ident tests by Enabling ident output for X86 Darwin.

The c-c++-common tests fail (or XPASS depending on which) on Darwin
because it doesn't currently emit .ident marker.  For X86 Darwin, this
is a trivial oversight; the assembler supports the directive.  We can
therefore use the default target hook there.

2018-12-23  Iain Sandoe  <iain@sandoe.co.uk>

        * config/i386/darwin.h (TARGET_ASM_OUTPUT_IDENT): New.

From-SVN: r267372

5 years agouse simple-object instead of nm to determine if files contain LTO.
Iain Sandoe [Sun, 23 Dec 2018 10:43:59 +0000 (10:43 +0000)]
use simple-object instead of nm to determine if files contain LTO.

This replaces the use of nm to search for the LTO common symbol marker
and uses simple object to see if there's a section starting with
".gnu.lto_." or ".gnu.offload_lto_"

2018-12-23  Iain Sandoe  <iain@sandoe.co.uk>

* collect2.c (maybe_run_lto_and_relink): Don’t say we have a temp file
unless we actually did some LTO.
(has_lto_section, is_lto_object_file): New.
(maybe_lto_object_file): Remove.
(scan_prog_file): Use is_lto_object_file() instead of scanning the
output of nm.

From-SVN: r267371

5 years agoHandle -save-temps in collect2
Iain Sandoe [Sun, 23 Dec 2018 10:35:28 +0000 (10:35 +0000)]
Handle -save-temps in collect2

Handle the option, make the saved filenames and paths easier to handle.
Don't print '[Leaving...]' for files we never created and don't exist - or unless
verbose is true.

2018-12-23  Iain Sandoe  <iain@sandoe.co.uk>

* collect2.c (main): Parse the output file early so we can make nicer
temp names.  Respond to “-save-temps” in the GCC OPTIONS.
(maybe_unlink): Don’t print “[Leaving…”] for files we never created
and don’t exist.

From-SVN: r267370

5 years agoEnsure collect2 responds to intended commmand line options.
Iain Sandoe [Sun, 23 Dec 2018 10:28:51 +0000 (10:28 +0000)]
Ensure collect2 responds to intended commmand line options.

To ensure compatibility with the flags consumed by ld, some of the flags
needed by collect2 come from the command line and some are passed
in the COLLECT_GCC_OPTIONS.

Here we combine initial parses of both and then set the LTO mode accordingly.

2018-12-23  Iain Sandoe  <iain@sandoe.co.uk>

* collect2.c (main): Combine flags from both the command line and
COLLECT_GCC_OPTIONS to determine the set in force

From-SVN: r267369

5 years agore PR fortran/88328 (ICE in resolve_tag_format, at fortran/io.c:1641)
Steven G. Kargl [Sun, 23 Dec 2018 05:18:27 +0000 (05:18 +0000)]
re PR fortran/88328 (ICE in resolve_tag_format, at fortran/io.c:1641)

2018-12-22  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/88328
* io.c (resolve_tag_format): Add error for zero-sized array.
(gfc_resolve_dt): Manipulate gfc_current_locus to get sensible error
message locus.

2018-12-22  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/88328
* gfortran.dg/pr88328.f90: New test.

From-SVN: r267367

5 years agoDaily bump.
GCC Administrator [Sun, 23 Dec 2018 00:16:22 +0000 (00:16 +0000)]
Daily bump.

From-SVN: r267366

5 years agoRemove support for demangling GCC 2.x era mangling schemes.
Jason Merrill [Sun, 23 Dec 2018 00:06:34 +0000 (19:06 -0500)]
Remove support for demangling GCC 2.x era mangling schemes.

libiberty/
* cplus-dem.c: Remove cplus_mangle_opname, cplus_demangle_opname,
internal_cplus_demangle, and all subroutines.
(libiberty_demanglers): Remove entries for ancient GNU (pre-3.0),
Lucid, ARM, HP, and EDG demangling styles.
(cplus_demangle): Remove 'work' variable.  Don't call
internal_cplus_demangle.
include/
* demangle.h: Remove support for ancient GNU (pre-3.0), Lucid,
ARM, HP, and EDG demangling styles.

From-SVN: r267363

5 years ago* ipa-utils.c (ipa_merge_profiles): Recompute summaries.
Jan Hubicka [Sat, 22 Dec 2018 21:13:41 +0000 (22:13 +0100)]
* ipa-utils.c (ipa_merge_profiles): Recompute summaries.

From-SVN: r267361

5 years agotree.c: (obj_type_ref_class): Move to...
Jan Hubicka [Sat, 22 Dec 2018 20:06:52 +0000 (21:06 +0100)]
tree.c: (obj_type_ref_class): Move to...

* tree.c: (obj_type_ref_class): Move to...
* ipa-devirt.c (obj_type_ref_class): Move to here; lookup main
odr type.
(get_odr_type): Compensate for type simplification.

* g++.dg/ipa/devirt-30.C: Add dg-do.
* g++.dg/lto/devirt-1_0.C: New testcase.
* g++.dg/lto/devirt-2_0.C: New testcase.
* g++.dg/lto/devirt-3_0.C: New testcase.
* g++.dg/lto/devirt-4_0.C: New testcase.
* g++.dg/lto/devirt-5_0.C: New testcase.
* g++.dg/lto/devirt-6_0.C: New testcase.
* g++.dg/lto/devirt-13_0.C: New testcase.
* g++.dg/lto/devirt-14_0.C: New testcase.
* g++.dg/lto/devirt-19_0.C: New testcase.
* g++.dg/lto/devirt-22_0.C: New testcase.
* g++.dg/lto/devirt-23_0.C: New testcase.
* g++.dg/lto/devirt-30_0.C: New testcase.
* g++.dg/lto/devirt-34_0.C: New testcase.

From-SVN: r267359

5 years ago[Patch, PowerPC/Darwin] Fix library export of long double symbols.
Iain Sandoe [Sat, 22 Dec 2018 20:06:47 +0000 (20:06 +0000)]
[Patch, PowerPC/Darwin] Fix library export of long double symbols.

During 8.x, the rs6000 target-specific mangling was reorganised which uncovered
a long-standing bug in Darwin’s mangling for ‘IBM’ long double.  Now the symbols
are correctly mangled, and we end up with a bunch of test link fails.

This patch adds the necessary subset of the Linux long double exports to Darwin’s
export table.

2018-12-22  Iain Sandoe  <iain@sandoe.co.uk>

* /config/os/bsd/darwin/ppc-extra.ver: Append long double symbols.

From-SVN: r267358

5 years agore PR fortran/85798 (ICE in get_array_index, at fortran/data.c:69)
Steven G. Kargl [Sat, 22 Dec 2018 19:37:06 +0000 (19:37 +0000)]
re PR fortran/85798 (ICE in get_array_index, at fortran/data.c:69)

2018-12-22  Steven G . Kargl  <kargl@gcc.gnu.org>

PR fortran/85798
* decl.c (gfc_match_data): If a component of a derived type entity
appears in data statement, check that does not have the allocatable
attribute.

2018-12-22  Steven G . Kargl  <kargl@gcc.gnu.org>

PR fortran/85798
* gfortran.dg/pr85798.f90: New test.

From-SVN: r267356

5 years agore PR fortran/88169 (Rejects USE rename of namelist group)
Steven G. Kargl [Sat, 22 Dec 2018 17:26:12 +0000 (17:26 +0000)]
re PR fortran/88169 (Rejects USE rename of namelist group)

2018-12-21  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/88169
* module.c (mio_namelist): Remove an error condition/message that
is contrary to the Fortran standard.

2018-12-21  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/88169
* gfortran.dg/pr88169_1.f90: new test.
* gfortran.dg/pr88169_2.f90: Ditto.
* gfortran.dg/pr88169_3.f90: Ditto.

From-SVN: r267351

5 years agobackport: re PR fortran/85544 (ICE in gfc_conv_scalarized_array_ref, at fortran/trans...
Thomas Koenig [Sat, 22 Dec 2018 14:21:01 +0000 (14:21 +0000)]
backport: re PR fortran/85544 (ICE in gfc_conv_scalarized_array_ref, at fortran/trans-array.c:3385)

2018-12-22  Thomas Koenig  <tkoenig@gcc.gnu.org>

    Backport from trunk
    PR fortran/85544
    * gfortran.dg/power_7.f90: New test.

From-SVN: r267348

5 years agore PR fortran/85544 (ICE in gfc_conv_scalarized_array_ref, at fortran/trans-array...
Thomas Koenig [Sat, 22 Dec 2018 14:14:44 +0000 (14:14 +0000)]
re PR fortran/85544 (ICE in gfc_conv_scalarized_array_ref, at fortran/trans-array.c:3385)

2018-12-22  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/85544
* frontend-passes.c (optimize_power): Remove.
(optimize_op): Remove call to optimize_power.
* trans-expr.c (gfc_conv_power_op): Handle cases of 1**integer,
(2|4|8|16) ** integer and (-1) ** integer.

2018-12-22  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/85544
* gfortran.dg/power_7.f90: New test.

From-SVN: r267347

5 years agoDaily bump.
GCC Administrator [Sat, 22 Dec 2018 00:16:32 +0000 (00:16 +0000)]
Daily bump.

From-SVN: r267346

5 years agore PR fortran/69121 (IEEE_SCALB is not generic)
Steven G. Kargl [Fri, 21 Dec 2018 21:09:17 +0000 (21:09 +0000)]
re PR fortran/69121 (IEEE_SCALB is not generic)

2018-12-21  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/69121
* ieee/ieee_arithmetic.F90: Provide missing interfaces for IEEE_SCALB.

2018-12-21  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/69121
* gfortran.dg/ieee/ieee_9.f90: New test.

From-SVN: r267343

5 years agore PR c++/86524 (std::less with pointer arguments not usable in static_assert in...
Jakub Jelinek [Fri, 21 Dec 2018 19:58:36 +0000 (20:58 +0100)]
re PR c++/86524 (std::less with pointer arguments not usable in static_assert in constexpr function)

PR c++/86524
PR c++/88446
* cp-tree.h (cp_fold_maybe_rvalue, cp_fold_rvalue): Declare.
(fold_non_dependent_expr): Add manifestly_const_eval argument.
* constexpr.c (cxx_eval_builtin_function_call): Evaluate
__builtin_constant_p if ctx->manifestly_const_eval even in constexpr
functions.  Don't reuse dummy{1,2} vars between different arguments.
Use cp_fold_rvalue instead of cp_fully_fold.  Fix comment typo.
(fold_non_dependent_expr): Add manifestly_const_eval argument, pass
it through to cxx_eval_outermost_constant_expr and
maybe_constant_value.
* cp-gimplify.c (cp_fold_maybe_rvalue, cp_fold_rvalue): No longer
static.
* semantics.c (finish_static_assert): Call fold_non_dependent_expr
with true as manifestly_const_eval.

* g++.dg/cpp1y/constexpr-86524.C: New test.
* g++.dg/cpp2a/is-constant-evaluated4.C: New test.
* g++.dg/cpp2a/is-constant-evaluated5.C: New test.
* g++.dg/cpp2a/is-constant-evaluated6.C: New test.

From-SVN: r267341

5 years agocorrect double semi-colons
Paul Thomas [Fri, 21 Dec 2018 19:25:02 +0000 (19:25 +0000)]
correct double semi-colons

From-SVN: r267340

5 years agore PR middle-end/85594 (ICE during expand when compiling with -fwrapv -fopenmp)
Jakub Jelinek [Fri, 21 Dec 2018 19:17:13 +0000 (20:17 +0100)]
re PR middle-end/85594 (ICE during expand when compiling with -fwrapv -fopenmp)

PR middle-end/85594
PR middle-end/88553
* omp-expand.c (extract_omp_for_update_vars): Regimplify the condition
if needed.
(expand_omp_for_generic): Don't clobber t temporary for ordered loops.

* gcc.dg/gomp/pr85594.c: New test.
* gcc.dg/gomp/pr88553.c: New test.

From-SVN: r267339

5 years agore PR ipa/88561 (PGO devirtualization miscompilation of firefox)
Jan Hubicka [Fri, 21 Dec 2018 19:13:06 +0000 (20:13 +0100)]
re PR ipa/88561 (PGO devirtualization miscompilation of firefox)

PR ipa/88561
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::ipa_polymorphic_call_context): Handle
arguments of thunks correctly.
(ipa_polymorphic_call_context::get_dynamic_context): Be ready for
NULL instance pinter.
* lto-cgraph.c (lto_output_node): Always stream thunk info.

From-SVN: r267338

5 years agore PR fortran/87881 (gfortran.dg/inquiry_type_ref_(1.f08|3.f90) fail on darwin)
Paul Thomas [Fri, 21 Dec 2018 19:09:42 +0000 (19:09 +0000)]
re PR fortran/87881 (gfortran.dg/inquiry_type_ref_(1.f08|3.f90) fail on darwin)

2018-12-21  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/87881
* expr.c (find_inquiry_ref): Loop through the inquiry refs in
case there are two of them.
(simplify_ref_chain): Return true after a successful call to
find_inquiry_ref.

2018-12-21  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/87881
* gfortran.dg/inquiry_part_ref_4.f90: New test.

From-SVN: r267337

5 years agoS/390: Add support for double<->long vector converts
Andreas Krebbel [Fri, 21 Dec 2018 18:57:00 +0000 (18:57 +0000)]
S/390: Add support for double<->long vector converts

gcc/ChangeLog:

2018-12-21  Andreas Krebbel  <krebbel@linux.ibm.com>

* config/s390/vector.md ("floatv2div2df2", "floatunsv2div2df2")
("fix_truncv2dfv2di2", "fixuns_truncv2dfv2di2"): New pattern
definitions.

gcc/testsuite/ChangeLog:

2018-12-21  Andreas Krebbel  <krebbel@linux.ibm.com>

* gcc.target/s390/vector/fp-signedint-convert-1.c: New test.
* gcc.target/s390/vector/fp-unsignedint-convert-1.c: New test.

From-SVN: r267336

5 years agopr88418.c (dg-options): Add -mno-avx.
Uros Bizjak [Fri, 21 Dec 2018 18:13:22 +0000 (19:13 +0100)]
pr88418.c (dg-options): Add -mno-avx.

        * gcc.target/i386/pr88418.c (dg-options): Add -mno-avx.

From-SVN: r267334

5 years agoUpdate maintainer email address
Thomas Preud'homme [Fri, 21 Dec 2018 17:53:03 +0000 (17:53 +0000)]
Update maintainer email address

2018-12-21  Thomas Preud'homme  <thomas.preudhomme@linaro.org>

    * MAINTAINERS (Write After Approval): Update my maintainer address.

From-SVN: r267330

5 years ago* MAINTAINERS (Write After Approval): Add myself.
Gergö Barany [Fri, 21 Dec 2018 17:23:16 +0000 (17:23 +0000)]
* MAINTAINERS (Write After Approval): Add myself.

From-SVN: r267329

5 years agore PR rtl-optimization/87727 (gcc.target/sparc/overflow-2.c FAILs)
Eric Botcazou [Fri, 21 Dec 2018 16:09:23 +0000 (16:09 +0000)]
re PR rtl-optimization/87727 (gcc.target/sparc/overflow-2.c FAILs)

PR rtl-optimization/87727
* combine.c (cant_combine_insn_p): On a LEAF_REGISTERS target, combine
again moves from leaf hard registers.

* final.c (final_scan_insn_1) <NOTE_INSN_INLINE_ENTRY>: Minor tweak.

From-SVN: r267328

5 years agore PR target/88522 (Error: operand size mismatch for `vpgatherqq')
Jakub Jelinek [Fri, 21 Dec 2018 16:01:53 +0000 (17:01 +0100)]
re PR target/88522 (Error: operand size mismatch for `vpgatherqq')

PR target/88522
* config/i386/sse.md (*avx512pf_gatherpf<mode>sf_mask,
*avx512pf_gatherpf<mode>df_mask, *avx512pf_scatterpf<mode>sf_mask,
*avx512pf_scatterpf<mode>df_mask): Use %X5 instead of %5 for
-masm=intel.
(gatherq_mode): Remove mode iterator.
(*avx512f_gathersi<mode>, *avx512f_gathersi<mode>_2): Use X instead
of <xtg_mode>.
(*avx512f_gatherdi<mode>): Use X instead of <gatherq_mode>.
(*avx512f_gatherdi<mode>_2, *avx512f_scattersi<mode>,
*avx512f_scatterdi<mode>): Use %X5 for -masm=intel.

From-SVN: r267327

5 years agore PR rtl-optimization/88563 (wrong code with -O2 -fno-code-hoisting -fno-tree-ccp...
Jakub Jelinek [Fri, 21 Dec 2018 15:54:55 +0000 (16:54 +0100)]
re PR rtl-optimization/88563 (wrong code with -O2 -fno-code-hoisting -fno-tree-ccp -fno-tree-dominator-opts -fno-tree-forwprop -fno-tree-fre -fno-tree-pre -fno-tree-vrp)

PR rtl-optimization/88563
* expr.c (expand_expr_real_2) <case WIDEN_MULT_EXPR>: Swap innermode
and mode arguments to convert_modes.  Likewise swap mode and word_mode
arguments.  Handle both arguments with VOIDmode before convert_modes
of one of them.  Formatting fixes.

* gcc.dg/pr88563.c: New test.

From-SVN: r267326

5 years agore PR target/88556 (Inline built-in sinh, cosh, tanh for -ffast-math)
Uros Bizjak [Fri, 21 Dec 2018 13:30:58 +0000 (14:30 +0100)]
re PR target/88556 (Inline built-in sinh, cosh, tanh for -ffast-math)

PR target/88556
* internal-fn.def (COSH): New.
(SINH): Ditto.
(TANH): Ditto.
* optabs.def (cosh_optab): New.
(sinh_optab): Ditto.
(tanh_optab): Ditto.
* config/i386/i386-protos.h (ix86_emit_i387_sinh): New prototype.
(ix86_emit_i387_cosh): Ditto.
(ix86_emit_i387_tanh): Ditto.
* config/i386/i386.c (ix86_emit_i387_sinh): New function.
(ix86_emit_i387_cosh): Ditto.
(ix86_emit_i387_tanh): Ditto.
* config/i386/i386.md (sinhxf2): New expander.
(sinh<mode>2): Ditto.
(coshxf2): Ditto.
(cosh<mode>2): Ditto.
(tanhxf2): Ditto.
(tanh<mode>2): Ditto.

From-SVN: r267325

5 years agore PR c++/87125 (ICE in tsubst_copy starting with r261084)
Jakub Jelinek [Fri, 21 Dec 2018 12:11:57 +0000 (13:11 +0100)]
re PR c++/87125 (ICE in tsubst_copy starting with r261084)

PR c++/87125
* g++.dg/cpp0x/pr87125.C: New test.

From-SVN: r267324

5 years ago[ARM] Fix size-optimization-ieee testcase failure
Thomas Preud'homme [Fri, 21 Dec 2018 11:49:04 +0000 (11:49 +0000)]
[ARM] Fix size-optimization-ieee testcase failure

On some version of dejagnu, options in RUNTESTFLAGS are appended to the
command-line and thus any -mfloat-abi=softfp or -mfloat-abi=hard in
there overwrite the -mfloat-abi=soft in the dg-options for
size-optimization-ieee-* tests. Test is still run though because
arm_soft_ok returns true if -mfloat-abi=soft is accepted, even if the
file is not compiled for softfloat due to a later -mfloat-abi on the
command line.

This patch adds a dg-skip-if to those tests to ensure they are not run
in softfp or hard mode.

2018-12-21  Thomas Preud'homme  <thomas.preudhomme@linaro.org>

    gcc/testsuite/
    * gcc.target/arm/size-optimization-ieee-1.c: Skip if passing
    -mfloat-abi=softfp or -mfloat-abi=hard.
    * gcc.target/arm/size-optimization-ieee-2.c: Likewise.
    * gcc.target/arm/size-optimization-ieee-3.c: Likewise.

From-SVN: r267323

5 years agore PR target/88547 (missed optimization for vector comparisons)
Jakub Jelinek [Fri, 21 Dec 2018 10:37:11 +0000 (11:37 +0100)]
re PR target/88547 (missed optimization for vector comparisons)

PR target/88547
* config/i386/i386.c (ix86_expand_int_sse_cmp): Optimize
x > y ? 0 : -1 into min (x, y) == x ? -1 : 0.

* gcc.target/i386/pr88547-1.c: Expect only 2 knotb and 2 knotw
insns instead of 4, check for vpminud, vpminuq and no vpsubd or
vpsubq.
* gcc.target/i386/sse2-pr88547-1.c: New test.
* gcc.target/i386/sse2-pr88547-2.c: New test.
* gcc.target/i386/sse4_1-pr88547-1.c: New test.
* gcc.target/i386/sse4_1-pr88547-2.c: New test.
* gcc.target/i386/avx2-pr88547-1.c: New test.
* gcc.target/i386/avx2-pr88547-2.c: New test.
* gcc.target/i386/avx512f-pr88547-2.c: New test.
* gcc.target/i386/avx512vl-pr88547-1.c: New test.
* gcc.target/i386/avx512vl-pr88547-2.c: New test.
* gcc.target/i386/avx512vl-pr88547-3.c: New test.
* gcc.target/i386/avx512f_cond_move.c (y): Change from unsigned int
array to int array.

From-SVN: r267322

5 years agox86: VAESDEC{,LAST} allow memory inputs
Jan Beulich [Fri, 21 Dec 2018 09:31:30 +0000 (09:31 +0000)]
x86: VAESDEC{,LAST} allow memory inputs

They are no different from their VAESENC{,LAST} counterparts in this
regard.

From-SVN: r267321

5 years agosupport --with-multilib-list=@name for ARM
Alexandre Oliva [Fri, 21 Dec 2018 05:40:53 +0000 (05:40 +0000)]
support --with-multilib-list=@name for ARM

Introduce @name as a means to specify alternate multilib profiles as
arguments to --with-multilib-list.

So far this is only implemented for ARM.

for  gcc/ChangeLog

* config.gcc (tmake_file): Add name to tmake_file for
        each @name in --with-multilib-list on arm-*-* targets.
* doc/install.texi (with-multilib-list): Document it.

From-SVN: r267320

5 years agoPR c++/88196 - ICE with class non-type template parameter.
Marek Polacek [Fri, 21 Dec 2018 03:34:06 +0000 (03:34 +0000)]
PR c++/88196 - ICE with class non-type template parameter.

* pt.c (convert_nontype_argument): If the expr is a PTRMEM_CST, also
check if the type we're converting it to is TYPE_PTRMEM_P.

* g++.dg/cpp0x/ptrmem-cst-arg1.C: Tweak dg-error.
* g++.dg/cpp2a/nontype-class10.C: New test.
* g++.dg/template/pr54858.C: Tweak dg-error.

From-SVN: r267319

5 years agotree-vect-data-refs.c (vect_enhance_data_refs_alignment): Use DR_TARGET_ALIGNMENT...
Jakub Jelinek [Fri, 21 Dec 2018 01:03:33 +0000 (02:03 +0100)]
tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Use DR_TARGET_ALIGNMENT on dr_info rather than dr.

* tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Use
DR_TARGET_ALIGNMENT on dr_info rather than dr.  Spelling fixes.

From-SVN: r267318

5 years agoDaily bump.
GCC Administrator [Fri, 21 Dec 2018 00:16:33 +0000 (00:16 +0000)]
Daily bump.

From-SVN: r267317

5 years agotree-vect-data-refs.c (vect_enhance_data_refs_alignment): Don't do versioning for...
Joern Rennecke [Thu, 20 Dec 2018 23:00:00 +0000 (23:00 +0000)]
tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Don't do versioning for data accesses with misaligned step.

2018-12-20  Joern Rennecke  <joern.rennecke@riscy-ip.com>

        * tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Don't do
        versioning for data accesses with misaligned step.

From-SVN: r267314

5 years agoC/C++: Add -Waddress-of-packed-member
H.J. Lu [Thu, 20 Dec 2018 21:41:48 +0000 (21:41 +0000)]
C/C++: Add -Waddress-of-packed-member

When address of packed member of struct or union is taken, it may result
in an unaligned pointer value.  This patch adds -Waddress-of-packed-member
to check alignment at pointer assignment and warn unaligned address as
well as unaligned pointer:

$ cat x.i
struct pair_t
{
  char c;
  int i;
} __attribute__ ((packed));

extern struct pair_t p;
int *addr = &p.i;
$ gcc -O2 -S x.i
x.i:8:13: warning: taking address of packed member of ‘struct pair_t’ may result in an unaligned pointer value [-Waddress-of-packed-member]
8 | int *addr = &p.i;
  |             ^

$ cat c.i
struct B { int i; };
struct C { struct B b; } __attribute__ ((packed));

long* g8 (struct C *p) { return p; }
$ gcc -O2 -S c.i -Wno-incompatible-pointer-types
c.i: In function ‘g8’:
c.i:4:18: warning: converting a packed ‘struct C *’ pointer (alignment 1) to ‘long int *’ (alignment 8) may may result in an unaligned pointer value [-Waddress-of-packed-member]
4 | long* g8 (struct C *p) { return p; }
  |                  ^
c.i:2:8: note: defined here
2 | struct C { struct B b; } __attribute__ ((packed));
  |        ^
$

This warning is enabled by default.  Since read_encoded_value_with_base
in unwind-pe.h has

  union unaligned
    {
      void *ptr;
      unsigned u2 __attribute__ ((mode (HI)));
      unsigned u4 __attribute__ ((mode (SI)));
      unsigned u8 __attribute__ ((mode (DI)));
      signed s2 __attribute__ ((mode (HI)));
      signed s4 __attribute__ ((mode (SI)));
      signed s8 __attribute__ ((mode (DI)));
    } __attribute__((__packed__));
  _Unwind_Internal_Ptr result;

and GCC warns:

gcc/libgcc/unwind-pe.h:210:37: warning: taking address of packed member of 'union unaligned' may result in an unaligned pointer value [-Waddress-of-packed-member]
    result = (_Unwind_Internal_Ptr) u->ptr;
                                    ^
we need to add GCC pragma to ignore -Waddress-of-packed-member.

gcc/

PR c/51628
* doc/invoke.texi: Document -Wno-address-of-packed-member.

gcc/c-family/

PR c/51628
* c-common.h (warn_for_address_or_pointer_of_packed_member): New.
* c-warn.c (check_alignment_of_packed_member): New function.
(check_address_of_packed_member): Likewise.
(check_and_warn_address_of_packed_member): Likewise.
(warn_for_address_or_pointer_of_packed_member): Likewise.
* c.opt: Add -Wno-address-of-packed-member.

gcc/c/

PR c/51628
* c-typeck.c (convert_for_assignment): Call
warn_for_address_or_pointer_of_packed_member.

gcc/cp/

PR c/51628
* call.c (convert_for_arg_passing): Call
warn_for_address_or_pointer_of_packed_member.
* typeck.c (convert_for_assignment): Likewise.

gcc/testsuite/

PR c/51628
* c-c++-common/pr51628-1.c: New test.
* c-c++-common/pr51628-2.c: Likewise.
* c-c++-common/pr51628-3.c: Likewise.
* c-c++-common/pr51628-4.c: Likewise.
* c-c++-common/pr51628-5.c: Likewise.
* c-c++-common/pr51628-6.c: Likewise.
* c-c++-common/pr51628-7.c: Likewise.
* c-c++-common/pr51628-8.c: Likewise.
* c-c++-common/pr51628-9.c: Likewise.
* c-c++-common/pr51628-10.c: Likewise.
* c-c++-common/pr51628-11.c: Likewise.
* c-c++-common/pr51628-12.c: Likewise.
* c-c++-common/pr51628-13.c: Likewise.
* c-c++-common/pr51628-14.c: Likewise.
* c-c++-common/pr51628-15.c: Likewise.
* c-c++-common/pr51628-26.c: Likewise.
* c-c++-common/pr51628-27.c: Likewise.
* c-c++-common/pr51628-28.c: Likewise.
* c-c++-common/pr51628-29.c: Likewise.
* c-c++-common/pr51628-30.c: Likewise.
* c-c++-common/pr51628-31.c: Likewise.
* c-c++-common/pr51628-32.c: Likewise.
* gcc.dg/pr51628-17.c: Likewise.
* gcc.dg/pr51628-18.c: Likewise.
* gcc.dg/pr51628-19.c: Likewise.
* gcc.dg/pr51628-20.c: Likewise.
* gcc.dg/pr51628-21.c: Likewise.
* gcc.dg/pr51628-22.c: Likewise.
* gcc.dg/pr51628-23.c: Likewise.
* gcc.dg/pr51628-24.c: Likewise.
* gcc.dg/pr51628-25.c: Likewise.
* c-c++-common/asan/misalign-1.c: Add
-Wno-address-of-packed-member.
* c-c++-common/asan/misalign-2.c: Likewise.
* c-c++-common/ubsan/align-2.c: Likewise.
* c-c++-common/ubsan/align-4.c: Likewise.
* c-c++-common/ubsan/align-6.c: Likewise.
* c-c++-common/ubsan/align-7.c: Likewise.
* c-c++-common/ubsan/align-8.c: Likewise.
* c-c++-common/ubsan/align-10.c: Likewise.
* g++.dg/ubsan/align-2.C: Likewise.
* gcc.target/i386/avx512bw-vmovdqu16-2.c: Likewise.
* gcc.target/i386/avx512f-vmovdqu32-2.c: Likewise.
* gcc.target/i386/avx512f-vmovdqu64-2.c: Likewise.
* gcc.target/i386/avx512vl-vmovdqu16-2.c: Likewise.
* gcc.target/i386/avx512vl-vmovdqu32-2.c: Likewise.
* gcc.target/i386/avx512vl-vmovdqu64-2.c: Likewise.

libgcc/

* unwind-pe.h (read_encoded_value_with_base): Add GCC pragma
to ignore -Waddress-of-packed-member.

From-SVN: r267313

5 years agoieee_arithmetic.F90: Re-organize file to eliminate #ifdef ...
Steven G. Kargl [Thu, 20 Dec 2018 19:39:30 +0000 (19:39 +0000)]
ieee_arithmetic.F90: Re-organize file to eliminate #ifdef ...

2018-12-20  Steven G. Kargl  <kargl@gcc.gnu.org>

* libgfortran/ieee/ieee_arithmetic.F90: Re-organize file to
eliminate #ifdef ... #endif.  No functional change.

From-SVN: r267312

5 years agoFix filesystem::path tests that fail on Windows
Jonathan Wakely [Thu, 20 Dec 2018 18:12:11 +0000 (18:12 +0000)]
Fix filesystem::path tests that fail on Windows

* testsuite/27_io/filesystem/operations/proximate.cc: Fix test for
MinGW.
* testsuite/27_io/filesystem/path/append/source.cc: Likewise.
* testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.

From-SVN: r267308

5 years agore PR target/88457 (ICE: Max. number of generated reload insns per insn is achieved...
Vladimir Makarov [Thu, 20 Dec 2018 18:07:51 +0000 (18:07 +0000)]
re PR target/88457 (ICE: Max. number of generated reload insns per insn is achieved (90))

2018-12-20  Vladimir Makarov  <vmakarov@redhat.com>

PR target/88457
* ira-color.c (fast_allocation): Choose the best cost hard reg.

2018-12-20  Vladimir Makarov  <vmakarov@redhat.com>

PR target/88457
* ira-color.c (fast_allocation): Choose the best cost hard reg.

From-SVN: r267307

5 years agore PR c++/88180 (ICE in vec<tree_node*, va_gc, vl_embed>::quick_push(tree_node* const&))
Jakub Jelinek [Thu, 20 Dec 2018 17:34:19 +0000 (18:34 +0100)]
re PR c++/88180 (ICE in vec<tree_node*, va_gc, vl_embed>::quick_push(tree_node* const&))

PR c++/88180
* parser.c (cp_parser_class_specifier_1): If
cp_parser_check_type_definition fails, skip default arguments, NSDMIs,
etc. like for erroneous template args.

* g++.dg/parse/pr88180.C: New test.
* g++.dg/pr85039-1.C: Don't expect diagnostics inside of the type
definition's NSDMIs.

From-SVN: r267306

5 years agocp-tree.h (cp_fully_fold_init): Declare.
Jakub Jelinek [Thu, 20 Dec 2018 17:31:05 +0000 (18:31 +0100)]
cp-tree.h (cp_fully_fold_init): Declare.

* cp-tree.h (cp_fully_fold_init): Declare.
* cp-gimplify.c (cp_fully_fold_init): New function.
* typeck2.c (split_nonconstant_init, store_init_value): Use it
instead of cp_fully_fold.

From-SVN: r267305

5 years ago[AArch64][SVE] Add ABS support
Richard Sandiford [Thu, 20 Dec 2018 16:34:31 +0000 (16:34 +0000)]
[AArch64][SVE] Add ABS support

For some reason we missed ABS out of the list of supported integer
operations when adding the SVE port initially.

2018-12-20  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
* config/aarch64/iterators.md (SVE_INT_UNARY, fp_int_op): Add abs.
(SVE_FP_UNARY): Sort.

gcc/testsuite/
* gcc.target/aarch64/pr64946.c: Force nosve.
* gcc.target/aarch64/ssadv16qi.c: Likewise.
* gcc.target/aarch64/usadv16qi.c: Likewise.
* gcc.target/aarch64/vect-abs-compile.c: Likewise.
* gcc.target/aarch64/sve/abs_1.c: New test.

From-SVN: r267304

5 years ago[AArch64][SVE] Fix IFN_COND_FMLA movprfx alternative
Richard Sandiford [Thu, 20 Dec 2018 16:32:46 +0000 (16:32 +0000)]
[AArch64][SVE] Fix IFN_COND_FMLA movprfx alternative

This patch fixes a cut-&-pasto in the (match_dup 4) version of
"cond_<SVE_COND_FP_TERNARY:optab><SVE_F:mode>".  (It's a shame
that there's so much cut-&-paste in these patterns, but it's hard
to avoid without more infrastructure.)

2018-12-20  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
* config/aarch64/aarch64-sve.md (*cond_<optab><mode>_4): Use
sve_fmla_op rather than sve_fmad_op for the movprfx alternative.

gcc/testsuite/
* gcc.target/aarch64/sve/fmla_2.c: New test.
* gcc.target/aarch64/sve/fmla_2_run.c: Likewise

From-SVN: r267303

5 years agoPR tree-optimization/84053 - missing -Warray-bounds accessing a local array across...
Martin Sebor [Thu, 20 Dec 2018 16:25:13 +0000 (16:25 +0000)]
PR tree-optimization/84053 - missing -Warray-bounds accessing a local array across inlined function boundaries

gcc/testsuite/ChangeLog:
* gcc.dg/Warray-bounds-36.c: New test.

From-SVN: r267302

5 years ago-Wtautological-compare: fix comparison of macro expansions
David Malcolm [Thu, 20 Dec 2018 14:18:48 +0000 (14:18 +0000)]
-Wtautological-compare: fix comparison of macro expansions

gcc/c-family/ChangeLog:
PR c++/87504
* c-warn.c (get_outermost_macro_expansion): New function.
(spelled_the_same_p): Use it to unwind the macro expansions, and
compare the outermost macro in each nested expansion, rather than
the innermost.

gcc/testsuite/ChangeLog:
PR c++/87504
* c-c++-common/Wtautological-compare-8.c: New test.

From-SVN: r267299

5 years ago[PR 88214] Assert that ptr is a pointer
Martin Jambor [Thu, 20 Dec 2018 14:14:22 +0000 (15:14 +0100)]
[PR 88214] Assert that ptr is a pointer

2018-12-20  Martin Jambor  <mjambor@suse.cz>

PR ipa/88214
* tree-ssa-alias.c (ao_ref_init_from_ptr_and_size): Assert that
ptr is a pointer.

From-SVN: r267298

5 years agoAdd missing test from previous commit
Jonathan Wakely [Thu, 20 Dec 2018 12:32:17 +0000 (12:32 +0000)]
Add missing test from previous commit

* testsuite/27_io/filesystem/directory_entry/lwg3171.cc: New test
(missed from previous commit).

From-SVN: r267297

5 years agore PR tree-optimization/84362 (Auto-vectorization regression when accessing member...
Richard Biener [Thu, 20 Dec 2018 11:39:59 +0000 (11:39 +0000)]
re PR tree-optimization/84362 (Auto-vectorization regression when accessing member variable through getter/accessor)

2018-12-20  Richard Biener  <rguenther@suse.de>

PR tree-optimization/84362
* tree-ssa-loop-im.c: Include alias.h, builtins.h and tree-dfa.h.
(struct im_mem_ref): add ref_canonical flag.
(struct mem_ref_hasher): Use ao_ref as compare_type.
(mem_ref_hasher::equal): Adjust and add variant comparing ao_ref
parts.
(mem_ref_alloc): Take ao_ref parameter, initialize ref_canonical
member.
(gather_mem_refs_stmt): Set up ao_ref early and do the lookup
using it.  If we have non-equal refs canonicalize the one
in the hashtable used for insertion.
(tree_ssa_lim_initialize): Adjust.

* g++.dg/vect/pr84362.cc: New testcase.

From-SVN: r267296

5 years agofix typo.
Xiong Hu Luo [Thu, 20 Dec 2018 08:44:42 +0000 (08:44 +0000)]
fix typo.

From-SVN: r267294

5 years agore PR target/88547 (missed optimization for vector comparisons)
Jakub Jelinek [Thu, 20 Dec 2018 07:58:02 +0000 (08:58 +0100)]
re PR target/88547 (missed optimization for vector comparisons)

PR target/88547
* config/i386/i386.c (ix86_expand_sse_movcc): For maskcmp, try to
emit vpmovm2? instruction perhaps after knot?.  Reorganize code
so that it doesn't have to test !maskcmp in almost every conditional.

* gcc.target/i386/pr88547-1.c: New test.

From-SVN: r267293

5 years ago[RS6000] Fix non-linux powerpc breakage
Alan Modra [Thu, 20 Dec 2018 01:08:14 +0000 (11:38 +1030)]
[RS6000] Fix non-linux powerpc breakage

svn r266496, git commit ab6b1bb456f broke non-linux powerpc builds
due to GNU_USER_DYNAMIC_LINKER being undefined.

* config/rs6000/sysv4.h (GNU_USER_DYNAMIC_LINKER): Define.

From-SVN: r267292

5 years agoDaily bump.
GCC Administrator [Thu, 20 Dec 2018 00:16:44 +0000 (00:16 +0000)]
Daily bump.

From-SVN: r267291

5 years agore PR fortran/87992 (ICE in resolve_fl_variable, at fortran/resolve.c:12314)
Steven G. Kargl [Wed, 19 Dec 2018 22:31:25 +0000 (22:31 +0000)]
re PR fortran/87992 (ICE in resolve_fl_variable, at fortran/resolve.c:12314)

2018-12-19  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/87992
* resolve.c (resolve_fl_variable): Avoid a NULL pointer.

2018-12-19  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/87992
* gfortran.dg/pr87992.f90: New test.

From-SVN: r267288

5 years agoconfig.gcc: Enable TARGET_DEFAULT_ASYNC_UNWIND_TABLES on aarch64*-*-freebsd*
Andreas Tobler [Wed, 19 Dec 2018 21:41:03 +0000 (22:41 +0100)]
config.gcc: Enable TARGET_DEFAULT_ASYNC_UNWIND_TABLES on aarch64*-*-freebsd*

2018-12-19  Andreas Tobler  <andreast@gcc.gnu.org>

* config.gcc: Enable TARGET_DEFAULT_ASYNC_UNWIND_TABLES on
aarch64*-*-freebsd*

From-SVN: r267287

5 years agoi386.md (SWI1248_AVX512BWDQ_64): Rename from SWI1248_AVX512BWDQ2_64.
Uros Bizjak [Wed, 19 Dec 2018 20:44:59 +0000 (21:44 +0100)]
i386.md (SWI1248_AVX512BWDQ_64): Rename from SWI1248_AVX512BWDQ2_64.

* config/i386/i386.md (SWI1248_AVX512BWDQ_64): Rename from
SWI1248_AVX512BWDQ2_64.  Unconditionally enable HImode.
(*cmp<mode>_ccz_1): Emit kortest instead of ktest insn.
Use SWI1248_AVX512BWDQ_64 mode iterator and enable only for
TARGET_AVX512F.

testsuite/ChangeLog:

* gcc.target/i386/avx512dq-pr82855.c: Update scan-assembler pattern.

From-SVN: r267286

5 years agoFix grammar in libstdc++ ABI history documentation
Jonathan Wakely [Wed, 19 Dec 2018 20:16:57 +0000 (20:16 +0000)]
Fix grammar in libstdc++ ABI history documentation

* doc/xml/manual/abi.xml: Add missing word.

From-SVN: r267285

5 years ago[ARM] Optimize executable size when using softfloat fmul/dmul
Thomas Preud'homme [Wed, 19 Dec 2018 17:34:18 +0000 (17:34 +0000)]
[ARM] Optimize executable size when using softfloat fmul/dmul

Softfloat single precision and double precision floating-point
multiplication routines in libgcc share some code with the
floating-point division of their corresponding precision. As the code
is structured now, this leads to *all* division code being pulled in an
executable in softfloat mode even if only multiplication is
performed.

This patch create some new LIB1ASMFUNCS macros to also build files with
just the multiplication and shared code as weak symbols. By putting
these earlier in the static library, they can then be picked up when
only multiplication is used and they are overriden by the global
definition in the existing file containing both multiplication and
division code when division is needed.

The patch also removes changes made to the FUNC_START and ARM_FUNC_START
macros in r218124 since the intent was to put multiplication and
division code into their own section in a later patch to achieve the
same size optimization. That approach relied on specific section layout
to ensure multiplication and division were not too far from the shared
bit of code in order to the branches to be within range. Due to lack of
guarantee regarding section layout, in particular with all the
possibility of linker scripts, this approach was chosen instead. This
patch keeps the two testcases that were posted by Tony Wang on the mailing
list to implement this approach and adds a new one.

2018-12-19  Thomas Preud'homme  <thomas.preudhomme@linaro.org>

    libgcc/
    * /config/arm/lib1funcs.S (FUNC_START): Remove unused sp_section
    parameter and corresponding code.
    (ARM_FUNC_START): Likewise in both definitions.
    Also update footer comment about condition that need to match with
    gcc/config/arm/elf.h to also include libgcc/config/arm/t-arm.
    * config/arm/ieee754-df.S (muldf3): Also build it if L_arm_muldf3 is
    defined.  Weakly define it in this case.
    * config/arm/ieee754-sf.S (mulsf3): Likewise with L_arm_mulsf3.
    * config/arm/t-elf (LIB1ASMFUNCS): Build _arm_muldf3.o and
    _arm_mulsf3.o before muldiv versions if targeting Thumb-1 only. Add
    comment to keep condition in sync with the one in
    libgcc/config/arm/lib1funcs.S and gcc/config/arm/elf.h.

    gcc/
    * config/arm/elf.h: Update comment about condition that need to
    match with libgcc/config/arm/lib1funcs.S to also include
    libgcc/config/arm/t-arm.
    * doc/sourcebuild.texi (output-exists, output-exists-not): Rename
    subsubsection these directives are in to "Check for output files".
    Move scan-symbol to that section and add to it new scan-symbol-not
    directive.

2018-12-19  Tony Wang  <tony.wang@arm.com>
    Thomas Preud'homme  <thomas.preudhomme@linaro.org>

    gcc/testsuite/
    * lib/lto.exp (lto-execute): Define output_file and testname_with_flags
    to same value as execname.
    (scan-symbol): Move and rename to ...
    * lib/gcc-dg.exp (scan-symbol-common): This.  Adapt into a
    helper function returning true or false if a symbol is present.
    (scan-symbol): New procedure.
    (scan-symbol-not): Likewise.
    * gcc.target/arm/size-optimization-ieee-1.c: New testcase.
    * gcc.target/arm/size-optimization-ieee-2.c: Likewise.
    * gcc.target/arm/size-optimization-ieee-3.c: Likewise.

From-SVN: r267282

5 years ago[nvptx] Add PTX_CTA_SIZE
Tom de Vries [Wed, 19 Dec 2018 17:16:10 +0000 (17:16 +0000)]
[nvptx] Add PTX_CTA_SIZE

2018-12-19  Tom de Vries  <tdevries@suse.de>

* config/nvptx/nvptx.c (PTX_CTA_SIZE): Define.

From-SVN: r267281

5 years agoc++, asm: Do not handle any asm-qualifiers in top-level asm
Segher Boessenkool [Wed, 19 Dec 2018 16:22:47 +0000 (17:22 +0100)]
c++, asm: Do not handle any asm-qualifiers in top-level asm

Previously, "volatile" was allowed.  Changing this simplifies the code,
makes things more regular, and makes the C and C++ frontends handle
this the same way.

cp/
* parser.c (cp_parser_asm_definition): Do not allow any asm qualifiers
on top-level asm.

testsuite/
* g++.dg/asm-qual-3.C: New testcase.
* gcc.dg/asm-qual-3.c: New testcase.

From-SVN: r267280

5 years agoc/c++, asm: Use nicer error for const and restrict
Segher Boessenkool [Wed, 19 Dec 2018 16:16:05 +0000 (17:16 +0100)]
c/c++, asm: Use nicer error for const and restrict

Not all qualifiers are asm qualifiers.  We can talk about that in a
nicer way than just giving a generic parser error.

This also adds two testcases for C++, that previously were for C only.

c/
* c-parser.c (c_parser_asm_statement) <RID_CONST, RID_RESTRICT>: Give
a more specific error message (instead of just falling through).

cp/
* parser.c (cp_parser_asm_definition) <RID_CONST, RID_RESTRICT>: Give
a more specific error message (instead of just falling through).

testsuite/
* g++.dg/asm-qual-1.C: New testcase.
* g++.dg/asm-qual-2.C: New testcase.
* gcc.dg/asm-qual-1.c: Update.

From-SVN: r267279

5 years agoc/c++, asm: Use nicer error for duplicate asm qualifiers
Segher Boessenkool [Wed, 19 Dec 2018 16:12:17 +0000 (17:12 +0100)]
c/c++, asm: Use nicer error for duplicate asm qualifiers

Also as suggested by Jason.

c/
* c-parser.c (c_parser_asm_statement): Keep track of the location each
asm qualifier is first seen; use that to give nicer "duplicate asm
qualifier" messages.  Delete 'quals" variable, instead pass the
"is_volatile_ flag to build_asm_stmt directly.
* c-tree.h (build_asm_stmt): Make the first arg bool instead of tree.
* c-typeck.c (build_asm_stmt): Ditto; adjust.

cp/
* parser.c (cp_parser_asm_definition): Rewrite the loop to work without
"done" boolean variable.
* parser.c (cp_parser_asm_definition): Keep track of the location each
asm qualifier is first seen; use that to give nicer "duplicate asm
qualifier" messages.

From-SVN: r267278

5 years agoc/c++, asm: Write the asm-qualifier loop without "done" boolean
Segher Boessenkool [Wed, 19 Dec 2018 15:55:28 +0000 (16:55 +0100)]
c/c++, asm: Write the asm-qualifier loop without "done" boolean

As suggested by Jason.

c/
* c-parser.c (c_parser_asm_statement): Rewrite the loop to work without
"done" boolean variable.

cp/
* parser.c (cp_parser_asm_definition): Rewrite the loop to work without
"done" boolean variable.

From-SVN: r267277

5 years agoC++: better locations for bogus initializations (PR c++/88375)
David Malcolm [Wed, 19 Dec 2018 15:22:27 +0000 (15:22 +0000)]
C++: better locations for bogus initializations (PR c++/88375)

PR c++/88375 reports that errors relating to invalid conversions in
initializations are reported at unhelpfully vague locations, as in
e.g.:

enum struct a : int {
  one, two
};

struct foo {
  int e1, e2;
  a e3;
} arr[] = {
  { 1, 2, a::one },
  { 3, a::two },
  { 4, 5, a::two }
};

for which g++ trunk emits the vague:

pr88375.cc:12:1: error: cannot convert 'a' to 'int' in initialization
   12 | };
      | ^

with the error at the final closing brace.

This patch uses location information for the initializers, converting the
above to:

pr88375.cc:10:11: error: cannot convert 'a' to 'int' in initialization
   10 |   { 3, a::two },
      |        ~~~^~~
      |           |
      |           a

highlighting which subexpression is problematic, and its type.

Ideally we'd also issue a note showing the field decl being initialized,
but that turned out to be more invasive.

gcc/cp/ChangeLog:
PR c++/88375
* typeck.c (convert_for_assignment): Capture location of rhs
before stripping, and if available.  Use the location when
complaining about bad conversions, labelling it with the
rhstype if the location was present.
* typeck2.c (digest_init_r): Capture location of init before
stripping.

gcc/testsuite/ChangeLog:
PR c++/88375
* g++.dg/init/pr88375-2.C: New test.
* g++.dg/init/pr88375.C: New test.

From-SVN: r267276

5 years ago[openacc] Make oacc_fn_attrib_level external
Tom de Vries [Wed, 19 Dec 2018 15:20:06 +0000 (15:20 +0000)]
[openacc] Make oacc_fn_attrib_level external

Expose oacc_fn_attrib_level to be used in backends.

2018-12-19  Tom de Vries  <tdevries@suse.de>

* omp-offload.c (oacc_fn_attrib_level): Remove static.
* omp-offload.h (oacc_fn_attrib_level): Declare.

From-SVN: r267275

5 years ago[openacc] Add oacc_get_default_dim
Tom de Vries [Wed, 19 Dec 2018 15:19:56 +0000 (15:19 +0000)]
[openacc] Add oacc_get_default_dim

Expose oacc_default_dims to backends.

2018-12-19  Tom de Vries  <tdevries@suse.de>

* omp-offload.c (oacc_get_default_dim): New function.
* omp-offload.h (oacc_get_default_dim): Declare.

From-SVN: r267274

5 years agoC++: improvements to binary operator diagnostics (PR c++/87504)
David Malcolm [Wed, 19 Dec 2018 15:15:42 +0000 (15:15 +0000)]
C++: improvements to binary operator diagnostics (PR c++/87504)

The C frontend is able (where expression locations are available) to print
problems with binary operators in 3-location form, labelling the types of
the expressions:

  arg_0 op arg_1
  ~~~~~ ^~ ~~~~~
    |        |
    |        arg1 type
    arg0 type

The C++ frontend currently just shows the combined location:

  arg_0 op arg_1
  ~~~~~~^~~~~~~~

and fails to highlight where the subexpressions are, or their types.

This patch introduces a op_location_t struct for handling the above
operator-location vs combined-location split, and a new
class binary_op_rich_location for displaying the above, so that the
C++ frontend is able to use the more detailed 3-location form for
type mismatches in binary operators, and for -Wtautological-compare
(where types are not displayed).  Both forms can be seen in this
example:

bad-binary-ops.C:69:20: error: no match for 'operator&&' (operand types are
  's' and 't')
   69 |   return ns_4::foo && ns_4::inner::bar;
      |          ~~~~~~~~~ ^~ ~~~~~~~~~~~~~~~~
      |                |                   |
      |                s                   t
bad-binary-ops.C:69:20: note: candidate: 'operator&&(bool, bool)' <built-in>
   69 |   return ns_4::foo && ns_4::inner::bar;
      |          ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~

The patch also allows for some uses of macros in
-Wtautological-compare, where both sides of the comparison have
been spelled the same way, e.g.:

Wtautological-compare-ranges.c:23:11: warning: self-comparison always
   evaluates to true [-Wtautological-compare]
   23 |   if (FOO == FOO);
      |           ^~

gcc/c-family/ChangeLog:
PR c++/87504
* c-common.h (warn_tautological_cmp): Convert 1st param from
location_t to const op_location_t &.
* c-warn.c (find_array_ref_with_const_idx_r): Call fold_for_warn
when testing for INTEGER_CST.
(warn_tautological_bitwise_comparison): Convert 1st param from
location_t to const op_location_t &; use it to build a
binary_op_rich_location, and use this.
(spelled_the_same_p): New function.
(warn_tautological_cmp): Convert 1st param from location_t to
const op_location_t &.  Warn for macro expansions if
spelled_the_same_p.  Use binary_op_rich_location.

gcc/c/ChangeLog:
PR c++/87504
* c-typeck.c (class maybe_range_label_for_tree_type_mismatch):
Move from here to gcc-rich-location.h and gcc-rich-location.c.
(build_binary_op): Use struct op_location_t and
class binary_op_rich_location.

gcc/cp/ChangeLog:
PR c++/87504
* call.c (op_error): Convert 1st param from location_t to
const op_location_t &.  Use binary_op_rich_location for binary
ops.
(build_conditional_expr_1): Convert 1st param from location_t to
const op_location_t &.
(build_conditional_expr): Likewise.
(build_new_op_1): Likewise.
(build_new_op): Likewise.
* cp-tree.h (build_conditional_expr): Likewise.
(build_new_op): Likewise.
(build_x_binary_op): Likewise.
(cp_build_binary_op): Likewise.
* parser.c (cp_parser_primary_expression): Build a location
for id-expression nodes.
(cp_parser_binary_expression): Use an op_location_t when
calling build_x_binary_op.
(cp_parser_operator): Build a location for user-defined literals.
* typeck.c (build_x_binary_op): Convert 1st param from location_t
to const op_location_t &.
(cp_build_binary_op): Likewise.  Use binary_op_rich_location.

gcc/ChangeLog:
PR c++/87504
* gcc-rich-location.c
(maybe_range_label_for_tree_type_mismatch::get_text): Move here from
c/c-typeck.c.
(binary_op_rich_location::binary_op_rich_location): New ctor.
(binary_op_rich_location::use_operator_loc_p): New function.
* gcc-rich-location.h
(class maybe_range_label_for_tree_type_mismatch)): Move here from
c/c-typeck.c.
(struct op_location_t): New forward decl.
(class binary_op_rich_location): New class.
* tree.h (struct op_location_t): New struct.

gcc/testsuite/ChangeLog:
* c-c++-common/Wtautological-compare-ranges.c: New test.
* g++.dg/cpp0x/pr51420.C: Add -fdiagnostics-show-caret and update
expected output.
* g++.dg/diagnostic/bad-binary-ops.C: Update expected output from
1-location form to 3-location form, with labelling of ranges with
types.  Add examples of id-expression nodes with namespaces.
* g++.dg/diagnostic/param-type-mismatch-2.C: Likewise.

From-SVN: r267273

5 years agoC++: more location wrapper nodes (PR c++/43064, PR c++/43486)
David Malcolm [Wed, 19 Dec 2018 15:08:21 +0000 (15:08 +0000)]
C++: more location wrapper nodes (PR c++/43064, PR c++/43486)

This is v6 of the patch, as posted to:
  https://gcc.gnu.org/ml/gcc-patches/2018-12/msg01331.html

The C++ frontend gained various location wrapper nodes in r256448 (GCC 8).
That patch:
  https://gcc.gnu.org/ml/gcc-patches/2018-01/msg00799.html
added wrapper nodes around all nodes with !CAN_HAVE_LOCATION_P for:

* arguments at callsites, and for

* typeid, alignof, sizeof, and offsetof.

This is a followup to that patch, adding many more location wrappers
to the C++ frontend.  It adds location wrappers for nodes with
!CAN_HAVE_LOCATION_P to:

* all literal nodes (in cp_parser_primary_expression)

* all id-expression nodes (in finish_id_expression), except within a
  decltype.

* all mem-initializer nodes within a mem-initializer-list
  (in cp_parser_mem_initializer)

However, the patch also adds some suppressions: regions in the parser
for which wrapper nodes will not be created:

* within a template-parameter-list or template-argument-list (in
  cp_parser_template_parameter_list and cp_parser_template_argument_list
  respectively), to avoid encoding the spelling location of the nodes
  in types.  For example, "array<10>" and "array<10>" are the same type,
  despite the fact that the two different "10" tokens are spelled in
  different locations in the source.

* within a gnu-style attribute (none of are handlers are set up to cope
  with location wrappers yet)

* within various OpenMP clauses

The patch enables various improvements to locations for bad
initializations, for -Wchar-subscripts, and enables various other
improvements in the followup patch.

For example, given the followup buggy mem-initializer:

class X {
  X() : bad(42),
        good(42)
  { }
  void* bad;
  int good;
};

previously, our diagnostic was on the final close parenthesis of the
mem-initializer-list, leaving it unclear where the problem is:

t.cc: In constructor 'X::X()':
t.cc:3:16: error: invalid conversion from 'int' to 'void*' [-fpermissive]
    3 |         good(42)
      |                ^
      |                |
      |                int

whereas with the patch we highlight which expression is bogus:

t.cc: In constructor 'X::X()':
t.cc:2:13: error: invalid conversion from 'int' to 'void*' [-fpermissive]
    2 |   X() : bad(42),
      |             ^~
      |             |
      |             int

Similarly, the diagnostic for this bogus initialization:

i.cc:1:44: error: initializer-string for array of chars is too long [-fpermissive]
    1 | char test[3][4] = { "ok", "too long", "ok" };
      |                                            ^

is improved by the patch so that it indicates which string is too long:

i.cc:1:27: error: initializer-string for array of chars is too long [-fpermissive]
    1 | char test[3][4] = { "ok", "too long", "ok" };
      |                           ^~~~~~~~~~

gcc/c-family/ChangeLog:
PR c++/43064
PR c++/43486
* c-common.c (unsafe_conversion_p): Fold any location wrapper.
(verify_tree): Handle location wrappers.
(c_common_truthvalue_conversion): Strip any location wrapper.
Handle CONST_DECL.
(fold_offsetof): Strip any location wrapper.
(complete_array_type): Likewise for initial_value.
(convert_vector_to_array_for_subscript): Call fold_for_warn on the
index before checking for INTEGER_CST.
* c-pretty-print.c (c_pretty_printer::primary_expression): Don't
print parentheses around location wrappers.
* c-warn.c (warn_logical_operator): Call fold_for_warn on op_right
before checking for INTEGER_CST.
(warn_tautological_bitwise_comparison): Call
tree_strip_any_location_wrapper on lhs, rhs, and bitop's operand
before checking for INTEGER_CST.
(readonly_error): Strip any location wrapper.
(warn_array_subscript_with_type_char): Strip location wrappers
before checking for INTEGER_CST.  Use the location of the index if
available.

gcc/ChangeLog:
PR c++/43064
PR c++/43486
* convert.c: Include "selftest.h".
(preserve_any_location_wrapper): New function.
(convert_to_pointer_maybe_fold): Update to handle location
wrappers.
(convert_to_real_maybe_fold): Likewise.
(convert_to_integer_1): Strip expr when using TREE_OVERFLOW.
Handle location wrappers when checking for INTEGER_CST.
(convert_to_integer_maybe_fold): Update to handle location
wrappers.
(convert_to_complex_maybe_fold): Likewise.
(selftest::test_convert_to_integer_maybe_fold): New functions.
(selftest::convert_c_tests): New function.
* convert.h (preserve_any_location_wrapper): New decl.
* fold-const.c (size_binop_loc): Strip location wrappers when
using TREE_OVERFLOW.
(operand_equal_p): Strip any location wrappers.
(integer_valued_real_p): Strip any location wrapper.
* selftest-run-tests.c (selftest::run_tests): Call
selftest::convert_c_tests.
* selftest.h (selftest::convert_c_tests): New decl.
* tree.c (build_complex): Assert that REAL and IMAG are constants.
(integer_zerop): Look through location wrappers.
(integer_onep): Likewise.
(integer_each_onep): Likewise.
(integer_all_onesp): Likewise.
(integer_minus_onep): Likewise.
(integer_pow2p): Likewise.
(integer_nonzerop): Likewise.
(integer_truep): Likewise.
(fixed_zerop): Likewise.
(real_zerop): Likewise.
(real_onep): Likewise.
(real_minus_onep): Likewise.
(tree_int_cst_equal): Likewise.
(simple_cst_equal): Treat location wrappers with non-equal source
locations as being unequal.
(uniform_integer_cst_p): Look through location wrappers.
(maybe_wrap_with_location): Don't create wrappers if any
auto_suppress_location_wrappers are active.
(suppress_location_wrappers): New variable.
(selftest::test_predicates): New test.
(selftest::tree_c_tests): Call it.
* tree.h (CONSTANT_CLASS_OR_WRAPPER_P): New macro.
(suppress_location_wrappers): New decl.
(class auto_suppress_location_wrappers): New class.

gcc/cp/ChangeLog:
PR c++/43064
PR c++/43486
* call.c (build_conditional_expr_1): Strip location wrappers when
checking for CONST_DECL.
(conversion_null_warnings): Use location of "expr" if available.
* class.c (fixed_type_or_null): Handle location wrappers.
* constexpr.c (potential_constant_expression_1): Likewise.
* cvt.c (ignore_overflows): Strip location wrappers when
checking for INTEGER_CST, and re-wrap the result if present.
(ocp_convert): Call fold_for_warn before checking for INTEGER_CST.
* decl.c (reshape_init_r): Strip any location wrapper.
(undeduced_auto_decl): Likewise.
* expr.c (mark_discarded_use): Likewise for expr.
* init.c (build_aggr_init): Likewise before checking init for
DECL_P.
(warn_placement_new_too_small): Call fold_for_warn on adj before
checking for CONSTANT_CLASS_P, and on nelts.  Strip any location
wrapper from op0 and on oper before checking for VAR_P.
* parser.c (cp_parser_primary_expression): Call
maybe_add_location_wrapper on numeric and string literals.
(cp_parser_postfix_expression): Strip any location wrapper when
checking for DECL_IS_BUILTIN_CONSTANT_P.
(cp_parser_unary_expression): Ensure that folding of NEGATE_EXPR
around a constant happens in the presence of location wrappers and
returns a wrapped result.
(cp_parser_has_attribute_expression): Strip any location wrapper
from "oper".
(cp_parser_binary_expression): Strip any location wrapper when
checking for DECL_P on the lhs.
(cp_parser_decltype): Strip any location wrapper from result of
cp_parser_decltype_expr.
(cp_parser_mem_initializer): Add location wrappers to the
parenthesized expression list.
(cp_parser_template_parameter_list): Don't create wrapper nodes
within a template-parameter-list.
(cp_parser_template_argument_list): Don't create wrapper nodes
within a template-argument-list.
(cp_parser_parameter_declaration): Strip location wrappers from
default arguments.
(cp_parser_gnu_attribute_list): Don't create wrapper nodes.
(cp_parser_std_attribute_spec_seq): Likewise.
(cp_parser_omp_all_clauses): Don't create wrapper nodes within
OpenMP clauses.
(cp_parser_omp_for_loop): Likewise.
(cp_parser_omp_declare_reduction_exprs): Likewise.
* pt.c (convert_nontype_argument_function): Strip location
wrappers from fn_no_ptr before checking for FUNCTION_DECL.
(tsubst_default_argument): Move note about which callsite led to
instantiation to after the check_default_argument call.
(do_auto_deduction): Likewise from init before checking for
DECL_P.
* semantics.c (force_paren_expr): Likewise from expr before
checking for DECL_P.
(finish_parenthesized_expr): Likewise from expr before
checking for STRING_CST.
(perform_koenig_lookup): Likewise from fn.
(finish_call_expr): Likewise.
(finish_id_expression): Rename to...
(finish_id_expression_1): ...this, calling
maybe_add_location_wrapper on the result.
(capture_decltype): Use lookup_name_real rather than value_member
when looking up decl within the capture-list.
* tree.c (cp_stabilize_reference): Strip any location wrapper.
(builtin_valid_in_constant_expr_p): Likewise.
(strip_typedefs_expr): Strip any location wrapper before checking
for decls or constants.
(is_overloaded_fn): Likewise.
(maybe_get_fns): Likewise.
(selftest::test_lvalue_kind): Verify lvalue_p.
* typeck.c (cxx_sizeof_expr): Strip any location wrapper.
(cxx_alignof_expr): Likewise.
(is_bitfield_expr_with_lowered_type): Handle location wrappers.
(cp_build_array_ref): Call maybe_constant_value on "idx".
(cp_build_binary_op): Strip location wrapper from first_arg before
checking for PARM_DECL.  Likewise for op1 before checking for
INTEGER_CST in two places.  Likewise for orig_op0 and orig_op1
when checking for STRING_CST.
(cp_build_addr_expr_1): Likewise for arg when checking for
FUNCTION_DECL.
(cp_build_modify_expr): Likewise for newrhs when checking for
STRING_CST.
(convert_for_assignment): Don't strip location wrappers when
stripping NON_LVALUE_EXPR.
(maybe_warn_about_returning_address_of_local): Strip location
wrapper from whats_returned before checking for DECL_P.
(can_do_nrvo_p): Strip location wrapper from retval.
(treat_lvalue_as_rvalue_p): Likewise.
(check_return_expr): Likewise.
* typeck2.c (cxx_incomplete_type_diagnostic): Strip location
wrapper from value before checking for VAR_P or PARM_DECL.
(digest_init_r): Strip location wrapper from init.  When
copying "init", also copy the wrapped node.

gcc/objc/ChangeLog:
PR c++/43064
PR c++/43486
* objc-act.c (objc_maybe_build_component_ref): Strip any location
wrapper before checking for UOBJC_SUPER_decl and self_decl.
(objc_finish_message_expr): Strip any location wrapper.
(gen_declaration): Strip location wrappers from "w".

gcc/testsuite/ChangeLog:
PR c++/43064
PR c++/43486
* c-c++-common/pr51712.c (valid2): Mark xfail as passing on C++.
* g++.dg/cpp0x/constexpr-47969.C: Update column of expected error.
* g++.dg/cpp0x/constexpr-ex2.C: Likewise.
* g++.dg/cpp0x/scoped_enum2.C: Likewise.
* g++.dg/cpp1z/decomp48.C: Update expected location of warning
for named local variables to use that of the local variable.
* g++.dg/ext/vla1.C: Update column.
* g++.dg/init/array43.C: Update expected column to be that of the
initializer.
* g++.dg/init/initializer-string-too-long.C: New test.
* g++.dg/init/new44.C: Add "-ftrack-macro-expansion=0".
* g++.dg/init/pr43064-1.C: New test.
* g++.dg/init/pr43064-2.C: New test.
* g++.dg/init/pr43064-3.C: New test.
* g++.dg/other/fold1.C: Update column of expected error.
* g++.dg/parse/crash36.C: Likewise.
* g++.dg/plugin/diagnostic-test-expressions-1.C: Add negative
integer and float expressions.
* g++.dg/template/defarg6.C: Move expected error to the default
argument; add expected message about where instantiated.
* g++.dg/wrappers/Wparentheses.C: New test.
* g++.old-deja/g++.bugs/900402_02.C: Update column of expected
error.

From-SVN: r267272

5 years ago[rs6000] Fix x86 SSSE3 compatibility implementations and testcases
Paul A. Clarke [Wed, 19 Dec 2018 15:06:00 +0000 (15:06 +0000)]
[rs6000] Fix x86 SSSE3 compatibility implementations and testcases

This patch is the analog to r266868-r266870, but for SSSE3.
The SSSE3 tests had been inadvertently made to PASS without actually running
the test code. Actually running the code turned up some previously undetected
issues.

This patch fixes some issues in the implementations, fixes up the tests
to use a union for the test data, which avoids strict aliasing issues,
and enables the tests to actually run (by removing a dependency on
__BUILTIN_CPU_SUPPORTS).

Also, there's a fairly insignificant change in the testcases that walk
through the data as pairs of vectors from:
  [0] and [1]
  [2] and [3]
  ...
  [n-4] and [n-3]
  [n-2] and [n-1]

to:
  [0] and [1]
  [1] and [2]
  ...
  [n-3] and [n-2]
  [n-2] and [n-1]

Since the testcases compute the correct answers based on the input, no
other changes were necessary to effect the change.

2018-12-19  Paul A. Clarke  <pc@us.ibm.com>

[gcc]

* config/rs6000/tmmintrin.h (_mm_hadds_epi16): Vector lanes swapped.
(_mm_hsub_epi32): Likewise.
(_mm_shuffle_epi8): Fix reversed interpretation of parameters.
(_mm_shuffle_pi8): Likewise.
(_mm_addubs_pi16): Likewise.

[gcc/testsuite]

* gcc.target/powerpc/ssse3-check.h: Enable tests to run.
* gcc.target/powerpc/ssse3-pabsb.c: Code fixes for strict aliasing
issues.
* gcc.target/powerpc/ssse3-pabsd.c: Likewise.
* gcc.target/powerpc/ssse3-palignr.c: Likewise.
* gcc.target/powerpc/ssse3-phaddd.c: Likewise.
* gcc.target/powerpc/ssse3-phaddsw.c: Likewise.
* gcc.target/powerpc/ssse3-phaddw.c: Likewise.
* gcc.target/powerpc/ssse3-phsubd.c: Likewise.
* gcc.target/powerpc/ssse3-phsubw.c: Likewise.
* gcc.target/powerpc/ssse3-pmulhrsw.c: Likewise.
* gcc.target/powerpc/ssse3-pshufb.c: Likewise.
* gcc.target/powerpc/ssse3-psignb.c: Likewise.
* gcc.target/powerpc/ssse3-psignd.c: Likewise.
* gcc.target/powerpc/ssse3-psignw.c: Likewise.
* gcc.target/powerpc/ssse3-vals.h: Provide input data as a union.

From-SVN: r267271

5 years ago[ARM] Do softfloat when -mfpu set, -mfloat-abi=softfp
Thomas Preud'homme [Wed, 19 Dec 2018 15:01:41 +0000 (15:01 +0000)]
[ARM] Do softfloat when -mfpu set, -mfloat-abi=softfp

FP instructions are only enabled for TARGET_32BIT and TARGET_HARD_FLOAT
but GCC only gives an error when TARGET_HARD_FLOAT is true and -mfpu is
not set. Among other things, it makes some of the cmse tests (eg.
gcc.target/arm/cmse/baseline/softfp.c) fail when targeting
-march=armv8-m.base -mcmse -mfpu=<something> -mfloat-abi=softfp. This
commit adds an extra check for TARGET_32BIT to TARGET_HARD_FLOAT such
that it is false on TARGET_THUMB1 targets even when a FPU is specified.

2018-12-19  thomas Preud'homme  <thomas.preudhomme@linaro.org>

    gcc/
    * config/arm/arm.h (TARGET_HARD_FLOAT): Restrict to TARGET_32BIT
    targets.
    * config/arm/arm.c (output_return_instruction): Only check
    TARGET_HARD_FLOAT to decide whether FP instructions are available.

    gcc/testsuite/
    * gcc.target/arm/cmse/baseline/softfp.c: Force an FPU.

From-SVN: r267270

5 years ago[nvptx] Commit passing pr85381-*.c test-cases
Tom de Vries [Wed, 19 Dec 2018 14:20:54 +0000 (14:20 +0000)]
[nvptx] Commit passing pr85381-*.c test-cases

Add pr85381*.c test-cases that are already passing without the fix for PR85381.

Build and reg-tested on x86_64 with nvptx accelerator.

2018-12-19  Tom de Vries  <tdevries@suse.de>

* testsuite/libgomp.oacc-c-c++-common/pr85381-2.c: New test.
* testsuite/libgomp.oacc-c-c++-common/pr85381-3.c: New test.
* testsuite/libgomp.oacc-c-c++-common/pr85381-4.c: New test.

From-SVN: r267268

5 years ago[nvptx, libgomp] Move rtl-dump test-cases to libgomp
Tom de Vries [Wed, 19 Dec 2018 14:20:44 +0000 (14:20 +0000)]
[nvptx, libgomp] Move rtl-dump test-cases to libgomp

The goacc.exp test-cases nvptx-merged-loop.c and nvptx-sese-1.c are failing
during linking due to missing libgomp.spec.

Move them to the libgomp testsuite.

Build and reg-tested on x86_64 with nvptx accelerator.

2018-12-19  Tom de Vries  <tdevries@suse.de>

* gcc.dg/goacc/nvptx-merged-loop.c: Move to
libgomp/testsuite/libgomp.oacc-c-c++-common.
* gcc.dg/goacc/nvptx-sese-1.c: Same.

* testsuite/lib/libgomp.exp: Add load_lib of scanoffloadrtl.exp.
* testsuite/libgomp.oacc-c-c++-common/nvptx-merged-loop.c: Move from
gcc/testsuite/gcc.dg/goacc.
* testsuite/libgomp.oacc-c-c++-common/nvptx-sese-1.c: Same.

From-SVN: r267267

5 years ago[testsuite] Add scan-offload-rtl-dump
Tom de Vries [Wed, 19 Dec 2018 14:20:33 +0000 (14:20 +0000)]
[testsuite] Add scan-offload-rtl-dump

Add scan-offload-rtl-dump, similar to scan-offload-tree-dump.

Build and reg-tested on x86_64 with nvptx accelerator.

2018-12-19  Tom de Vries  <tom@codesourcery.com>

* lib/scanoffloadrtl.exp: New file.
* gcc.dg-selftests/dg-final.exp (dg_final_directive_check_num_args): Add
offload-rtl.

* doc/sourcebuild.texi (Commands for use in dg-final, Scan optimization
dump files): Add offload-rtl.

From-SVN: r267266

5 years agoRestrict a VSX extract to TARGET_POWERPC64 (PR88213)
Segher Boessenkool [Wed, 19 Dec 2018 13:54:08 +0000 (14:54 +0100)]
Restrict a VSX extract to TARGET_POWERPC64 (PR88213)

This pattern optimises a scalar extract from a vector loaded from
memory to be just a scalar load from memory.  But to do a 64-bit
integer load you need 64-bit integer registers, which needs
TARGET_POWERPC64.

PR target/88213
* config/rs6000/vsx.md (*vsx_extract_<P:mode>_<VSX_D:mode>_load):
Require TARGET_POWERPC64.

From-SVN: r267263

5 years agore PR tree-optimization/88533 (Higher performance penalty of array-bounds checking...
Richard Biener [Wed, 19 Dec 2018 11:10:08 +0000 (11:10 +0000)]
re PR tree-optimization/88533 (Higher performance penalty of array-bounds checking for sparse-matrix vector multiply)

2018-12-19  Richard Biener  <rguenther@suse.de>

PR tree-optimization/88533
Revert
2018-04-30  Richard Biener  <rguenther@suse.de>

PR tree-optimization/28364
PR tree-optimization/85275
* tree-ssa-loop-ch.c (ch_base::copy_headers): Stop after
copying first exit test.

* gcc.dg/tree-ssa/ssa-dom-thread-7.c: Adjust.

* tree-ssa-loop-ch.c: Include tree-phinodes.h and
ssa-iterators.h.
(should_duplicate_loop_header_p): Track whether stmt compute
loop invariants or values based on IVs.  Apart from the
original loop header only duplicate blocks with exit tests
that are based on IVs or invariants.

* gcc.dg/tree-ssa/copy-headers-6.c: New testcase.
* gcc.dg/tree-ssa/copy-headers-7.c: Likewise.
* gcc.dg/tree-ssa/ivopt_mult_1.c: Un-XFAIL.
* gcc.dg/tree-ssa/ivopt_mult_2.c: Likewise.

From-SVN: r267262

5 years ago[nvptx] Use MAX, MIN, ROUND_UP macros
Tom de Vries [Wed, 19 Dec 2018 10:17:31 +0000 (10:17 +0000)]
[nvptx] Use MAX, MIN, ROUND_UP macros

Use MAX, MIN, and ROUND_UP macros to simplify code.

Build and reg-tested on x86_64 with nvptx accelerator.

2018-12-19  Tom de Vries  <tdevries@suse.de>

* config/nvptx/nvptx.c (nvptx_gen_shared_bcast, shared_prop_gen)
(nvptx_goacc_expand_accel_var): Use MAX and ROUND_UP.
(nvptx_assemble_value, nvptx_output_skip): Use MIN.
(nvptx_shared_propagate, nvptx_single, nvptx_expand_shared_addr): Use
MAX.

From-SVN: r267261

5 years ago[nvptx] Make nvptx state propagation function names more generic
Tom de Vries [Wed, 19 Dec 2018 10:17:21 +0000 (10:17 +0000)]
[nvptx] Make nvptx state propagation function names more generic

Rename state propagation functions to avoid worker/vector terminology.

Build and reg-tested on x86_64 with nvptx accelerator.

2018-12-19  Tom de Vries  <tdevries@suse.de>

* config/nvptx/nvptx.c (nvptx_gen_wcast): Rename as
nvptx_gen_warp_bcast.
(nvptx_gen_wcast): Rename to nvptx_gen_shared_bcast, add bool
vector argument, and update call to nvptx_gen_shared_bcast.
(propagator_fn): Add bool argument.
(nvptx_propagate): New bool argument, pass bool argument to fn.
(vprop_gen): Rename to warp_prop_gen, update call to
nvptx_gen_warp_bcast.
(nvptx_vpropagate): Rename to nvptx_warp_propagate, update call to
nvptx_propagate.
(wprop_gen): Rename to shared_prop_gen, update call to
nvptx_gen_shared_bcast.
(nvptx_wpropagate): Rename to nvptx_shared_propagate, update call
to nvptx_propagate.
(nvptx_wsync): Rename to nvptx_cta_sync.
(nvptx_single): Update calls to nvptx_gen_warp_bcast,
nvptx_gen_shared_bcast and nvptx_cta_sync.
(nvptx_process_pars): Likewise.
(write_worker_buffer): Rename as write_shared_buffer.
(nvptx_file_end): Update calls to write_shared_buffer.
(nvptx_expand_worker_addr): Rename as nvptx_expand_shared_addr.
(nvptx_expand_builtin): Update call to nvptx_expand_shared_addr.
(nvptx_get_worker_red_addr): Rename as nvptx_get_shared_red_addr.
(nvptx_goacc_reduction_setup): Update call to
nvptx_get_shared_red_addr.
(nvptx_goacc_reduction_fini): Likewise.
(nvptx_goacc_reduction_teardown): Likewise.

From-SVN: r267260

5 years ago[nvptx] Rename worker_bcast variables to oacc_bcast
Tom de Vries [Wed, 19 Dec 2018 10:17:11 +0000 (10:17 +0000)]
[nvptx] Rename worker_bcast variables to oacc_bcast

Rename worker_bcast variables to oacc_bcast, avoiding worker terminology.

Build and reg-tested on x86_64 with nvptx accelerator.

2018-12-19  Tom de Vries  <tdevries@suse.de>

* config/nvptx/nvptx.c (worker_bcast_size): Rename as
oacc_bcast_size.
(worker_bcast_align): Rename as oacc_bcast_align.
(worker_bcast_sym): Rename as oacc_bcast_sym.
(nvptx_option_override): Update usage of oacc_bcast_*.
(struct wcast_data_t): Rename as broadcast_data_t.
(nvptx_gen_wcast): Update type of data argument and usage of
oacc_bcast_align.
(wprop_gen): Update type of data_ and usage of oacc_bcast_align.
(nvptx_wpropagate): Update type of data and usage of
oacc_bcast_{sym,size}.
(nvptx_single): Update type of data and usage of oacc_bcast_size.
(nvptx_file_end): Update usage of oacc_bcast_{sym,align,size}.

From-SVN: r267259

5 years ago[nvptx] Generalize bar.sync instruction
Tom de Vries [Wed, 19 Dec 2018 10:17:01 +0000 (10:17 +0000)]
[nvptx] Generalize bar.sync instruction

Allow the logical barrier operand of nvptx_barsync to be a register, and add a
thread count operand.

Build and reg-tested on x86_64 with nvptx accelerator.

2018-12-19  Tom de Vries  <tdevries@suse.de>

* config/nvptx/nvptx.md (nvptx_barsync): Add and handle operand.
* config/nvptx/nvptx.c (nvptx_wsync): Update call to gen_nvptx_barsync.

From-SVN: r267258

5 years ago[nvptx] Only use one logical barrier resource
Tom de Vries [Wed, 19 Dec 2018 10:16:51 +0000 (10:16 +0000)]
[nvptx] Only use one logical barrier resource

For openacc loops, we generate this style of code:
...
        @%r41   bra.uni $L5;
        @%r40   bra     $L6;
                mov.u64 %r32, %ar0;
                cvta.shared.u64 %r39, __worker_bcast;
                st.u64  [%r39], %r32;
$L6:
$L5:
                bar.sync        0;
        @%r40   bra     $L4;
                cvta.shared.u64 %r38, __worker_bcast;
                ld.u64  %r32, [%r38];
                ...
$L4:
                bar.sync        1;
...

The first barrier is there to ensure that no thread reads the broadcast buffer
before it's written.  The second barrier is there to ensure that no thread
overwrites the broadcast buffer before all threads have read it (as well as
implementing the obligatory synchronization after a worker loop).

We've been using the logical barrier resources '0' and '1' for these two
barriers, but there's no reason why we can't use the same one.

Use logical barrier resource '0' for both barriers, making the openacc
implementation claim less resources.

Build and reg-tested on x86_64 with nvptx accelerator.

2018-12-19  Tom de Vries  <tdevries@suse.de>

* config/nvptx/nvptx.c (nvptx_single): Always pass false to
nvptx_wsync.
(nvptx_process_pars): Likewise.

From-SVN: r267257

5 years ago[nvptx] Use TARGET_SET_CURRENT_FUNCTION
Tom de Vries [Wed, 19 Dec 2018 10:16:41 +0000 (10:16 +0000)]
[nvptx] Use TARGET_SET_CURRENT_FUNCTION

Implement TARGET_SET_CURRENT_FUNCTION for nvptx.  This gives us a place to
add initialization or reset actions that need to be executed on a per-function
basis.

Build and reg-tested on x86_64 with nvptx accelerator.

2018-12-19  Tom de Vries  <tdevries@suse.de>

* config/nvptx/nvptx.c (nvptx_previous_fndecl): Declare.
(nvptx_set_current_function): New function.
(TARGET_SET_CURRENT_FUNCTION): Define.

From-SVN: r267256

5 years ago[aarch64] Correct architecture for tsv110.
Shaokun Zhang [Wed, 19 Dec 2018 10:08:50 +0000 (10:08 +0000)]
[aarch64] Correct architecture for tsv110.

For HiSilicon's tsv110 cpu core, it supports some v8_4A features, but
some mandatory features are not implemented.

2018-12-19  Shaokun Zhang  <zhangshaokun@hisilicon.com>

* config/aarch64/aarch64-cores.def (tsv110): Fix architecture.  This
part is really Armv8.2 with some permitted Armv8.4 extensions.

From-SVN: r267255

5 years agore PR target/88541 (VPCLMULQDQ 256-bit inline function unavailable with optimization...
Jakub Jelinek [Wed, 19 Dec 2018 08:31:16 +0000 (09:31 +0100)]
re PR target/88541 (VPCLMULQDQ 256-bit inline function unavailable with optimization but without enabled AVX512VL support)

PR target/88541
* config/i386/vpclmulqdqintrin.h (_mm256_clmulepi64_epi128): Enable
for -mavx -mvpclmulqdq rather than just for -mavx512vl -mvpclmulqdq.

* gcc.target/i386/avx-vpclmulqdq-1.c: New test.

From-SVN: r267254

5 years agore PR c++/87934 (struct with NSDMI of enum makes initialization a non-constant expres...
Jakub Jelinek [Wed, 19 Dec 2018 08:11:40 +0000 (09:11 +0100)]
re PR c++/87934 (struct with NSDMI of enum makes initialization a non-constant expression)

PR c++/87934
* constexpr.c (cxx_eval_constant_expression) <case CONSTRUCTOR>: Do
re-process TREE_CONSTANT CONSTRUCTORs if they aren't reduced constant
expressions.

* g++.dg/cpp0x/constexpr-87934.C: New test.

From-SVN: r267253

5 years ago[PR86153] simplify more overflow tests in VRP
Alexandre Oliva [Wed, 19 Dec 2018 06:51:41 +0000 (06:51 +0000)]
[PR86153] simplify more overflow tests in VRP

PR 86153 was originally filed when changes to the C++11's
implementation of vector resize(size_type) limited inlining that were
required for testsuite/g++.dg/pr83239.C to verify that we did not
issue an undesired warning.

That was worked by increasing the limit for inlining, but that in turn
caused the C++98 implementation of vector resize, that is
significantly different, to also be fully inlined, and that happened
to issue the very warnings the test was meant to verify we did NOT
issue.

The reason we issued the warnings was that we failed to optimize out
some parts of _M_fill_insert, used by the C++98 version of vector
resize, although the call of _M_fill_insert was guarded by a test that
could never pass: test testcase only calls resize when the vector size
is >= 3, to decrement the size by two.  The limitation we hit in VRP
was that the compared values could pass as an overflow test, if the
vector size was 0 or 1 (we knew it wasn't), but even with dynamic
ranges we failed to decide that the test result could be determined at
compile time, even though after the test we introduced ASSERT_EXPRs
that required a condition known to be false from earlier ones.

I pondered turning ASSERT_EXPRs that show impossible conditions into
traps, to enable subsequent instructions to be optimized, but I ended
up finding an earlier spot in which an overflow test that would have
introduced the impossible ASSERT_EXPR can have its result deduced from
earlier known ranges and resolved to the other path.

Although such overflow tests could be uniformly simplified to compares
against a constant, the original code would only perform such
simplifications when the test could be resolved to an equality test
against zero.  I've thus avoided introducing compares against other
constants, and instead added code that will only simplify overflow
tests that weren't simplified before when the condition can be
evaluated at compile time.

for  gcc/ChangeLog

PR testsuite/86153
PR middle-end/83239
* vr-values.c
(vr_values::vrp_evaluate_conditional_warnv_with_ops): Extend
simplification of overflow tests to cover cases in which we
can determine the result of the comparison.

for  gcc/testsuite/ChangeLog

PR testsuite/86153
PR middle-end/83239
* gcc.dg/vrp-overflow-1.c: New.

From-SVN: r267252

5 years ago[PR87012] canonicalize ref type for tmpl arg
Alexandre Oliva [Wed, 19 Dec 2018 06:51:30 +0000 (06:51 +0000)]
[PR87012] canonicalize ref type for tmpl arg

When binding an object to a template parameter of reference type, we
take the address of the object and dereference that address.  The type
of the address may still carry (template) typedefs, but
verify_unstripped_args_1 rejects such typedefs other than in the top
level of template arguments.

Canonicalizing the type we want to convert to right after any
substitutions or deductions avoids that issue.

for  gcc/cp/ChangeLog

PR c++/87012
* pt.c (convert_template_argument): Canonicalize type after
tsubst/deduce.

for  gcc/testsuite/ChangeLog

PR c++/87012
* g++.dg/cpp0x/pr87012.C: New.

From-SVN: r267251

5 years ago[PR c++/88146] do not crash synthesizing inherited ctor(...)
Alexandre Oliva [Wed, 19 Dec 2018 06:51:19 +0000 (06:51 +0000)]
[PR c++/88146] do not crash synthesizing inherited ctor(...)

This patch started out from the testcase in PR88146, that attempted to
synthesize an inherited ctor without any args before a varargs
ellipsis and crashed while at that, because of the unguarded
dereferencing of the parm type list, that usually contains a
terminator.  The terminator is not there for varargs functions,
however, and without any other args, we ended up dereferencing a NULL
pointer.  Oops.

Guarding accesses to parm would be easy, but not necessary.  In
do_build_copy_constructor, non-inherited ctors are copy-ctors, that
always have at least one parm, so parm needs not be guarded when we
know the access will only take place when we're dealing with an
inherited ctor.  The only other problematic use was in the cvquals
initializer, a variable only used in a loop over fields, that we
skipped individually in inherited ctors.  I've guarded the cvquals
initialization and the entire loop over fields so they only run for
copy-ctors.

Avoiding the crash from unguarded accesses was easy, but I thought we
should still produce the sorry message we got in other testcases that
passed arguments through the ellipsis in inherited ctors.  I put a
check in, and noticed the inherited ctors were synthesized with the
location assigned to the class name, although they were initially
assigned the location of the using declaration.  I decided the latter
was better, and arranged for the better location to be retained.

Further investigation revealed the lack of a sorry message had to do
with the call being in a non-evaluated context, in this case, a
noexcept expression.  The sorry would be correctly reported in other
contexts, so I rolled back the check I'd added, but retained the
source location improvement.

I was still concerned about issuing sorry messages while instantiating
template ctors even in non-evaluated contexts, e.g., if a template
ctor had a base initializer that used an inherited ctor with enough
arguments that they'd go through an ellipsis.  I wanted to defer the
instantiation of such template ctors, but that would have been wrong
for constexpr template ctors, and already done for non-constexpr ones.
So, I just consolidated multiple test variants into a single testcase
that explores and explains various of the possibilities I thought of.

for  gcc/cp/ChangeLog

PR c++/88146
* method.c (do_build_copy_constructor): Guard cvquals init and
loop over fields to run for non-inherited ctors only.
(synthesize_method): Retain location of inherited ctor.

for  gcc/testsuite/ChangeLog

PR c++/88146
* g++.dg/cpp0x/inh-ctor32.C: New.

From-SVN: r267250

5 years agoauto-profile.c (afdo_indirect_call): Skip generating histogram value if we can't...
Bin Cheng [Wed, 19 Dec 2018 02:25:48 +0000 (02:25 +0000)]
auto-profile.c (afdo_indirect_call): Skip generating histogram value if we can't find cgraph_node for then...

* auto-profile.c (afdo_indirect_call): Skip generating histogram
value if we can't find cgraph_node for then indirected callee.  Save
profile_id of the cgraph_node in histogram value's first counter.
* value-prof.c (gimple_value_profile_transformations): Don't skip
for flag_auto_profile.

From-SVN: r267249

5 years agoDaily bump.
GCC Administrator [Wed, 19 Dec 2018 00:16:23 +0000 (00:16 +0000)]
Daily bump.

From-SVN: r267248

5 years agore PR rtl-optimization/87759 (ICE in lra_assign, at lra-assigns.c:1624, or ICE: Maxim...
Jakub Jelinek [Tue, 18 Dec 2018 21:48:59 +0000 (22:48 +0100)]
re PR rtl-optimization/87759 (ICE in lra_assign, at lra-assigns.c:1624, or ICE: Maximum number of LRA assignment passes is achieved (30), or compile-time hog)

PR rtl-optimization/87759
* gcc.target/i386/pr87759.c: Require int128 effective target.

From-SVN: r267245

5 years agore PR rtl-optimization/87759 (ICE in lra_assign, at lra-assigns.c:1624, or ICE: Maxim...
Vladimir Makarov [Tue, 18 Dec 2018 21:20:16 +0000 (21:20 +0000)]
re PR rtl-optimization/87759 (ICE in lra_assign, at lra-assigns.c:1624, or ICE: Maximum number of LRA assignment passes is achieved (30), or compile-time hog)

2018-12-18  Vladimir Makarov  <vmakarov@redhat.com>

PR rtl-optimization/87759
* lra-assigns.c (lra_split_hard_reg_for): Recalculate
non_reload_pseudos.

2018-12-18  Vladimir Makarov  <vmakarov@redhat.com>

PR rtl-optimization/87759
* gcc.target/i386/pr87759.c: New.

From-SVN: r267244

5 years agore PR tree-optimization/88464 (AVX-512 vectorization of masked scatter failing with...
Jakub Jelinek [Tue, 18 Dec 2018 18:41:26 +0000 (19:41 +0100)]
re PR tree-optimization/88464 (AVX-512 vectorization of masked scatter failing with "not suitable for scatter store")

PR target/88464
* config/i386/i386-builtin-types.def
(VOID_FTYPE_PDOUBLE_QI_V8SI_V4DF_INT,
VOID_FTYPE_PFLOAT_QI_V4DI_V8SF_INT,
VOID_FTYPE_PLONGLONG_QI_V8SI_V4DI_INT,
VOID_FTYPE_PINT_QI_V4DI_V8SI_INT,
VOID_FTYPE_PDOUBLE_QI_V4SI_V2DF_INT,
VOID_FTYPE_PFLOAT_QI_V2DI_V4SF_INT,
VOID_FTYPE_PLONGLONG_QI_V4SI_V2DI_INT,
VOID_FTYPE_PINT_QI_V2DI_V4SI_INT): New builtin types.
* config/i386/i386.c (enum ix86_builtins): Add
IX86_BUILTIN_SCATTERALTSIV4DF, IX86_BUILTIN_SCATTERALTDIV8SF,
IX86_BUILTIN_SCATTERALTSIV4DI, IX86_BUILTIN_SCATTERALTDIV8SI,
IX86_BUILTIN_SCATTERALTSIV2DF, IX86_BUILTIN_SCATTERALTDIV4SF,
IX86_BUILTIN_SCATTERALTSIV2DI and IX86_BUILTIN_SCATTERALTDIV4SI.
(ix86_init_mmx_sse_builtins): Fix up names of IX86_BUILTIN_GATHERALT*,
IX86_BUILTIN_GATHER3ALT* and IX86_BUILTIN_SCATTERALT* builtins to
match the IX86_BUILTIN codes.  Build  IX86_BUILTIN_SCATTERALTSIV4DF,
IX86_BUILTIN_SCATTERALTDIV8SF, IX86_BUILTIN_SCATTERALTSIV4DI,
IX86_BUILTIN_SCATTERALTDIV8SI, IX86_BUILTIN_SCATTERALTSIV2DF,
IX86_BUILTIN_SCATTERALTDIV4SF, IX86_BUILTIN_SCATTERALTSIV2DI and
IX86_BUILTIN_SCATTERALTDIV4SI decls.
(ix86_vectorize_builtin_scatter): Expand those new builtins.

* gcc.target/i386/avx512f-pr88464-5.c: New test.
* gcc.target/i386/avx512f-pr88464-6.c: New test.
* gcc.target/i386/avx512f-pr88464-7.c: New test.
* gcc.target/i386/avx512f-pr88464-8.c: New test.
* gcc.target/i386/avx512vl-pr88464-5.c: New test.
* gcc.target/i386/avx512vl-pr88464-6.c: New test.
* gcc.target/i386/avx512vl-pr88464-7.c: New test.
* gcc.target/i386/avx512vl-pr88464-8.c: New test.
* gcc.target/i386/avx512vl-pr88464-9.c: New test.
* gcc.target/i386/avx512vl-pr88464-10.c: New test.
* gcc.target/i386/avx512vl-pr88464-11.c: New test.
* gcc.target/i386/avx512vl-pr88464-12.c: New test.
* gcc.target/i386/avx512vl-pr88464-13.c: New test.
* gcc.target/i386/avx512vl-pr88464-14.c: New test.
* gcc.target/i386/avx512vl-pr88464-15.c: New test.
* gcc.target/i386/avx512vl-pr88464-16.c: New test.

From-SVN: r267239

5 years agoLWG 3171: restore stream insertion for filesystem::directory_entry
Jonathan Wakely [Tue, 18 Dec 2018 16:57:36 +0000 (16:57 +0000)]
LWG 3171: restore stream insertion for filesystem::directory_entry

* include/bits/fs_dir.h (operator<<): Overload for directory_entry,
as per LWG 3171.
* testsuite/27_io/filesystem/directory_entry/lwg3171.cc: New test.

From-SVN: r267238

5 years agoFix previous commit to move instead of copying
Jonathan Wakely [Tue, 18 Dec 2018 16:38:13 +0000 (16:38 +0000)]
Fix previous commit to move instead of copying

* src/filesystem/std-dir.cc (filesystem::_Dir::advance): Move new
path instead of copying.

From-SVN: r267237

5 years agoMicro-optimization to avoid creating temporary path
Jonathan Wakely [Tue, 18 Dec 2018 15:52:37 +0000 (15:52 +0000)]
Micro-optimization to avoid creating temporary path

Now that path::operator/=(basic_string_view<value_type>) works directly
from the string argument, instead of constructing a temporary path from
the string, it's potentially more efficient to do 'path(x) /= s' instead
of 'x / s'. This changes the only relevant place in the library.

* src/filesystem/std-dir.cc (filesystem::_Dir::advance): Append
string to lvalue to avoid creating temporary path.

From-SVN: r267236