platform/upstream/gcc.git
15 months agolibstdc++: Fix operator% implementation for Clang
Matthias Kretz [Wed, 22 Mar 2023 07:12:08 +0000 (08:12 +0100)]
libstdc++: Fix operator% implementation for Clang

This resolves a regression of my previous fix where Clang would ICE on
_S_divides.

Signed-off-by: Matthias Kretz <m.kretz@gsi.de>
libstdc++-v3/ChangeLog:

* include/experimental/bits/simd_x86.h (_SimdImplX86): Use
_Base::_S_divides if the optimized _S_divides function is hidden
via the preprocessor.

15 months agogcov-tool: Use subcommand rather than sub-command in function comments
Jakub Jelinek [Tue, 28 Mar 2023 09:53:59 +0000 (11:53 +0200)]
gcov-tool: Use subcommand rather than sub-command in function comments

Follow-up to the recently committed fix of fixing the "subcomand" typos
in diagnostics.

2023-03-28  Jakub Jelinek  <jakub@redhat.com>
    Jonathan Wakely  <jwakely@redhat.com>

* gcov-tool.cc (do_merge, do_merge_stream, do_rewrite, do_overlap):
Use subcommand rather than sub-command in function comments.

15 months agoopenmp: Fix typo in diagnostics [PR109314]
Jakub Jelinek [Tue, 28 Mar 2023 09:39:46 +0000 (11:39 +0200)]
openmp: Fix typo in diagnostics [PR109314]

Trivial typo fix.

2023-03-28  Jakub Jelinek  <jakub@redhat.com>

PR fortran/109314
* openmp.cc (gfc_omp_absent_contains_clause): Fix typo in diagnostics
- composit -> composite.

15 months agorange-op-float: Only flush_denormals_to_zero for +-*/ [PR109154]
Jakub Jelinek [Tue, 28 Mar 2023 09:00:32 +0000 (11:00 +0200)]
range-op-float: Only flush_denormals_to_zero for +-*/ [PR109154]

As discussed in the PR, flushing denormals to zero on every frange::set
might be harmful for e.g. x < 0.0 comparisons, because we then on both
sides use ranges that include zero [-Inf, -0.0] on the true side, and
[-0.0, +Inf] NAN on the false side, rather than [-Inf, nextafter (-0.0, -Inf)]
on the true side.

The following patch does it only in range_operator_float::fold_range
which is right now used for +-*/ (both normal and reverse ops of those).

Though, I don't see any difference on the testcase in the PR, but not sure
what I should be looking at and the reduced testcase there has undefined
behavior.

2023-03-28  Jakub Jelinek  <jakub@redhat.com>

PR tree-optimization/109154
* value-range.h (frange::flush_denormals_to_zero): Make it public
rather than private.
* value-range.cc (frange::set): Don't call flush_denormals_to_zero
here.
* range-op-float.cc (range_operator_float::fold_range): Call
flush_denormals_to_zero.

15 months agosanopt: Return TODO_cleanup_cfg if any .{UB,HWA,A}SAN_* calls were lowered [PR106190]
Jakub Jelinek [Tue, 28 Mar 2023 08:56:44 +0000 (10:56 +0200)]
sanopt: Return TODO_cleanup_cfg if any .{UB,HWA,A}SAN_* calls were lowered [PR106190]

The following testcase ICEs, because without optimization eh lowering
decides not to duplicate finally block of try/finally and so we end up
with variable guarded cleanup.  The sanopt pass creates a cfg that ought
to be cleaned up (some IFN_UBSAN_* functions are lowered in this case with
constant conditions in gcond and when not allowing recovery some bbs which
end with noreturn calls actually have successor edges), but the cfg cleanup
is actually (it is -O0) done only during the optimized pass.  We notice
there that the d[1][a] = 0; statement which has an EH edge is unreachable
(because ubsan would always abort on the out of bounds d[1] access), remove
the EH landing pad and block, but because that block just sets a variable
and jumps to another one which tests that variable and that one is reachable
from normal control flow, the __builtin_eh_pointer (1) later in there is
kept in the IL and we ICE during expansion of that statement because the
EH region has been removed.

The following patch fixes it by doing the cfg cleanup already during
sanopt pass if we create something that might need it, while the EH
landing pad is then removed already during sanopt pass, there is ehcleanup
later and we don't ICE anymore.

2023-03-28  Jakub Jelinek  <jakub@redhat.com>

PR middle-end/106190
* sanopt.cc (pass_sanopt::execute): Return TODO_cleanup_cfg if any
of the IFN_{UB,HWA,A}SAN_* internal fns are lowered.

* gcc.dg/asan/pr106190.c: New test.

15 months agorange-op-float: Use get_nan_state in float_widen_lhs_range
Jakub Jelinek [Tue, 28 Mar 2023 08:55:31 +0000 (10:55 +0200)]
range-op-float: Use get_nan_state in float_widen_lhs_range

On Wed, Mar 22, 2023 at 07:32:44AM +0100, Aldy Hernandez wrote:
>       * value-range.cc (frange::set): Add nan_state argument.
>       * value-range.h (class nan_state): New.
>       (frange::get_nan_state): New.

The following patch makes use of those changes in float_widen_lhs_range.

2023-03-28  Jakub Jelinek  <jakub@redhat.com>

* range-op-float.cc (float_widen_lhs_range): Use pass get_nan_state
as 4th argument to set to avoid clear_nan and union_ calls.

15 months agoFix line ending
Eric Botcazou [Tue, 28 Mar 2023 08:44:06 +0000 (10:44 +0200)]
Fix line ending

gcc/testsuite/
* gcc.target/sparc/20230328-1.c: New test.
* gcc.target/sparc/20230328-2.c: Likewise.
* gcc.target/sparc/20230328-3.c: Likewise.
* gcc.target/sparc/20230328-4.c: Likewise.

15 months agoi386: Require just 32-bit alignment for SLOT_FLOATxFDI_387 -m32 -mpreferred-stack...
Jakub Jelinek [Tue, 28 Mar 2023 08:43:08 +0000 (10:43 +0200)]
i386: Require just 32-bit alignment for SLOT_FLOATxFDI_387 -m32 -mpreferred-stack-boundary=2 DImode temporaries [PR109276]

The following testcase ICEs since r11-2259 because assign_386_stack_local
-> assign_stack_local -> ix86_local_alignment now uses 64-bit alignment
for DImode temporaries rather than 32-bit as before.
Most of the spots in the backend which ask for DImode temporaries are during
expansion and those apparently are handled fine with -m32
-mpreferred-stack-boundary=2, we dynamically realign the stack in that case
(most of the spots actually don't need that alignment but at least one
does), then 2 spots are in STV which I assume also work correctly.
But during splitting we can create a DImode slot which doesn't need to be
64-bit alignment (it is nicer for performance though), when we apparently
aren't able to detect it for dynamic stack realignment purposes.

The following patch just makes the slot 32-bit aligned in that rare case.

2023-03-28  Jakub Jelinek  <jakub@redhat.com>

PR target/109276
* config/i386/i386.cc (assign_386_stack_local): For DImode
with SLOT_FLOATxFDI_387 and -m32 -mpreferred-stack-boundary=2 pass
align 32 rather than 0 to assign_stack_local.

* gcc.target/i386/pr109276.c: New test.

15 months agoFix PR target/109140
Eric Botcazou [Tue, 28 Mar 2023 08:13:24 +0000 (10:13 +0200)]
Fix PR target/109140

This is a regression present on the mainline and 12 branch at -O2, but the
issue is related to vectorization so was present at -O3 in earlier versions.

The vcondu expander that was added for VIS 3 more than a decade ago does not
fully work, because it does not filter out the unsigned condition codes (the
instruction is an UNSPEC that accepts only signed condition codes).

While I was at it, I also added the missing vcond and vcondu expanders for
the new comparison instructions that were added in VIS 4.

gcc/
PR target/109140
* config/sparc/sparc.cc (sparc_expand_vcond): Call signed_condition
on operand #3 to get the final condition code.  Use std::swap.
* config/sparc/sparc.md (vcondv8qiv8qi): New VIS 4 expander.
(fucmp<gcond:code>8<P:mode>_vis): Move around.
(fpcmpu<gcond:code><GCM:gcm_name><P:mode>_vis): Likewise.
(vcondu<GCM:mode><GCM:mode>): New VIS 4 expander.

gcc/testsuite/
* gcc.target/sparc/20230328-1.c: New test.
* gcc.target/sparc/20230328-2.c: Likewise.
* gcc.target/sparc/20230328-3.c: Likewise.
* gcc.target/sparc/20230328-4.c: Likewise.

15 months agoModula-2: fix documentation layout again
Eric Botcazou [Mon, 27 Mar 2023 16:27:17 +0000 (18:27 +0200)]
Modula-2: fix documentation layout again

Nothing really serious this time.

gcc/
* doc/gm2.texi: Add missing Next, Previous and Top fields to most
top-level sections.

15 months agotestsuite: Fix weak_undefined handling on Darwin
Rainer Orth [Tue, 28 Mar 2023 08:40:05 +0000 (10:40 +0200)]
testsuite: Fix weak_undefined handling on Darwin

The patch that introduced the weak_undefined effective-target keyword
and corresponding dg-add-options support

commit 378ec7b87a5265dbe2d489c245fac98ef37fa638
Author: Alexandre Oliva <oliva@adacore.com>
Date:   Thu Mar 23 00:45:05 2023 -0300

    [testsuite] test for weak_undefined support and add options

badly broke the affected tests on macOS like so:

ERROR: gcc.dg/addr_equal-1.c: unknown dg option: 89 for " dg-add-options 5 weak_undefined "
ERROR: gcc.dg/addr_equal-1.c: unknown dg option: 89 for " dg-add-options 5 weak_undefined "

add_options_for_weak_undefined tries to call an non-existant proc "89".
Even after fixing this by escaping the brackets, two tests still failed to
link since they lacked the corresponding calls do dg-add-options
weak_undefined.

Tested on x86_64-apple-darwin20.6.0 and i386-pc-solaris2.11.

2023-03-27  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

gcc/testsuite:
* lib/target-supports.exp (add_options_for_weak_undefined): Escape
brackets.
* gcc.dg/visibility-22.c: Add weak_undefined options.

libgomp:
* testsuite/libgomp.oacc-c-c++-common/routine-nohost-2.c: Add
weak_undefined options.

15 months agoExtend UTF-8 support to the 32-bit mingw host.
Costas Argyris [Sun, 26 Mar 2023 10:32:13 +0000 (11:32 +0100)]
Extend UTF-8 support to the 32-bit mingw host.

Prevent any name mangling in HOST_EXTRA_OBJS_SYMBOL
such that the linker always finds it by that name.

Also add the .manifest file as an explicit
dependency in the make rule such that the
object gets re-built if it changes.

gcc/ChangeLog:

* config.host: Pull in i386/x-mingw32-utf8 Makefile
fragment and reference utf8rc-mingw32.o explicitly
for mingw hosts.
* config/i386/sym-mingw32.cc: prevent name mangling of
stub symbol.
* config/i386/x-mingw32-utf8: Make utf8rc-mingw32.o
depend on manifest file explicitly.

Signed-off-by: Jonathan Yong <10walls@gmail.com>
15 months agoRevert "rtl-optimization/109237 - speedup bb_is_just_return"
Richard Biener [Tue, 28 Mar 2023 07:31:36 +0000 (09:31 +0200)]
Revert "rtl-optimization/109237 - speedup bb_is_just_return"

This reverts commit 776a5bb5894315ab144dc74222fc580fde8fdd87.

PR rtl-optimization/109311
* cfgcleanup.cc (bb_is_just_return): Revert previous change.

15 months agofixincludes: Declare memmem if it's not declared in system headers [PR109293]
Xi Ruoyao [Mon, 27 Mar 2023 17:48:02 +0000 (01:48 +0800)]
fixincludes: Declare memmem if it's not declared in system headers [PR109293]

memmem is not POSIX so the system may lack it.  Then libiberty will
provide an implementation, but it's a "supplemental function" and not
declared in libiberty.h.  We need to declare the prototype to use it
then.

See libiberty doc at
https://gcc.gnu.org/onlinedocs/libiberty/Supplemental-Functions.html.

Tested by bootstrapping GCC in the following container environments on
x86_64-linux-gnu:

1. "Vanilla" system with memmem in Glibc.
2. memmem removed from string.h.
3. memmem removed from both string.h and libc.so.

For 3, also verified that memmem from libiberty is linked into fixincl
executable.

Ok for trunk?

fixincludes/ChangeLog:

PR other/109293
* configure.ac (AC_CHECK_DECLS): Add memmem.
* configure: Regenerate.
* config.h.in: Regenerate.
* system.h (memmem): Declare if HAVE_DECL_MEMMEM is zero.

15 months agoRemove Negative(gwarf-) from gdwarf
Richard Biener [Fri, 24 Mar 2023 09:19:55 +0000 (10:19 +0100)]
Remove Negative(gwarf-) from gdwarf

Prior to the removal of STABS support the gdwarf, gstabs, ... options
formed a cycle with their Negative(..) option attribute.  But that
didn't actually have any effect since most of the options also
are Joined or JoinedOrMissing for which there's no pruning of options
and so once ran into the set_debug_level diagnostics reporting
conflicting debug formats.

The following removes the remains of that cycle, which is a
Negative option from gdwarf to gdwarf-.  With RejectNegative
added the expected effect of -gdwarf-4 -gdwarf would be to
enable DWARF5 support (but this doesn't happen for some reason).
I think the more sensible behavior is that seen and implemented
in opts.cc, the more specific -gdwarf-4 determines the DWARF level
and a later or earlier -gdwarf becomes a no-op.  So the
Negative(..) annotation on gdwarf is just confusing.

* common.opt (gdwarf): Remove Negative(gdwarf-).

15 months agoDisallow -gno-dwarf, gno-dwarf-N, -gno-gdb and -gno-vms
Richard Biener [Fri, 24 Mar 2023 08:57:33 +0000 (09:57 +0100)]
Disallow -gno-dwarf, gno-dwarf-N, -gno-gdb and -gno-vms

The following adds RejectNegative to the gdwarf, gdwarf-, ggdb and gvms
options since the current behavior is to treat the negative variant
the same as the positive variant.  In particular -ggdb -gno-gdb
do not cancel, and plain -gno-dwarf will enable (dwarf!) debug output.

Rejecting the negative forms avoids interpreting sensible behavior
to combinations of options like -gdwarf-5 -gno-dwarf-3 and sticks to
the behavior that later -g options simply override earlier ones and
the only negative form is -g0.

* common.opt (gdwarf): Add RejectNegative.
(gdwarf-): Likewise.
(ggdb): Likewise.
(gvms): Likewise.

15 months agoCRIS: Correct "T" to define_memory_constraint, not define_constraint
Hans-Peter Nilsson [Tue, 28 Mar 2023 01:23:33 +0000 (03:23 +0200)]
CRIS: Correct "T" to define_memory_constraint, not define_constraint

This patch has no effect on builds using reload of libgcc, newlib libc, my
own at-a-glance-testsuite and coremark.  That somewhat surprisingly
also goes for LRA builds, even with all CRIS reload_in_progress
augmented to include lra_in_progress.  I just noticed it when checking
because another port had a similar fix, where it mattered for LRA.

* config/cris/constraints.md ("T"): Correct to
define_memory_constraint.

15 months agoCRIS: Add peephole2 to handle gcc.target/cris/rld-legit1.c for LRA
Hans-Peter Nilsson [Tue, 28 Mar 2023 01:21:13 +0000 (03:21 +0200)]
CRIS: Add peephole2 to handle gcc.target/cris/rld-legit1.c for LRA

The test-case gcc.target/cris/rld-legit1.c is a reduced
test-case that required defining LEGITIMIZE_RELOAD_ADDRESS
to stop the address from being decomposed into several insns
by reload.  Valid but suboptimal code was generated.

(Before implementing that hook for CRIS, the same test-case
also exposed a bug in reload, and a fix was committed to
avoid an ICE; see e.g. git r0-71992-gff0d9879ab0f30 and
related commits.  But, post-cc0, reload no longer handles
this test-case without LEGITIMIZE_RELOAD_ADDRESS helping and
there'd again an be ICE for CRIS (again: only if
LEGITIMIZE_RELOAD_ADDRESS is disabled).  There's a patch to
reload to fix that, at
https://gcc.gnu.org/pipermail/gcc-patches/2023-February/612039.html)

But, LRA also does not handle that test-case gracefully, and
like reload without LEGITIMIZE_RELOAD_ADDRESS for CRIS,
decomposes the address into a suboptimal (but valid)
sequence, about as messy as that from reload, and
gcc.target/cris/rld-legit1.c would regress for LRA.  There's
nothing equivalent to LEGITIMIZE_RELOAD_ADDRESS for LRA.
(Stepping through LRA, I can't find an obvious place where
to put such a hook.  Granted, I haven't seen this kind of
messy decomposition in other code, so I'm not insisting a
LEGITIMIZE_RELOAD_ADDRESS-like hook is a good idea.)

These new peephole2's are required to not regress
gcc.target/cris/rld-legit1.c with LRA enabled for CRIS.
They don't appear to otherwise make a difference for neither
libgcc, newlib libc, my own at-a-glance tests nor coremark,
for neither LRA nor reload.

* config/cris/cris.md (BW2): New mode-iterator.
(lra_szext_decomposed, lra_szext_decomposed_indirect_with_offset): New
peephole2s.

15 months agoCRIS: Improve bailing for eliminable compares for "addi" vs. "add"
Hans-Peter Nilsson [Tue, 28 Mar 2023 01:20:05 +0000 (03:20 +0200)]
CRIS: Improve bailing for eliminable compares for "addi" vs. "add"

This patch affects a post-reload define_split for CRIS that transforms
a condition-code-clobbering addition into a non-clobbering addition.
(A "two-operand" addition between registers is the only insn that has
both a condition-code-clobbering and a non-clobbering variant for
CRIS.)  Many more "add.d":s are replaced by non-condition-code-
clobbering "addi":s after this patch, but most of the transformations
don't matter.

CRIS with LRA generated code that exposed a flaw with the original
patch: it bailed too easily, on *any* insn using the result of the
addition.  To wit, more effort than simply applying reg_mentioned_p is
needed to inspect the user, in the code to avoid munging an insn
sequence that cmpelim is supposed to handle.

With this patch coremark score for CRIS (*with reload*) improves by
less than 0.01% (a single "nop" is eliminated in
core_state_transition, in an execution path that affects ~1/20 of all
of the 10240 calls).  However, the original cause for this patch is to
not regress gcc.target/cris/pr93372-44.c for LRA, where otherwise a
needless "cmpq" is emitted.  For CRIS with LRA, the performance effect
on coremark isn't even measurable, except by reducing the size of the
executable due to affecting non-called library code.

* config/cris/cris.md ("*add<mode>3_addi"): Improve to bail only
for possible eliminable compares.

15 months agoCRIS: Remove unused constraint "R".
Hans-Peter Nilsson [Tue, 28 Mar 2023 01:18:31 +0000 (03:18 +0200)]
CRIS: Remove unused constraint "R".

* config/cris/constraints.md ("R"): Remove unused constraint.

15 months agoDaily bump.
GCC Administrator [Tue, 28 Mar 2023 00:17:14 +0000 (00:17 +0000)]
Daily bump.

15 months agogcov: Fix "subcomand" typos [PR109297]
Jonathan Wakely [Mon, 27 Mar 2023 12:46:46 +0000 (13:46 +0100)]
gcov: Fix "subcomand" typos [PR109297]

gcc/ChangeLog:

PR gcov-profile/109297
* gcov-tool.cc (merge_usage): Fix "subcomand" typo.
(merge_stream_usage): Likewise.
(overlap_usage): Likewise.

15 months agotree-optimization/54498 - testcase for the bug
Richard Biener [Mon, 27 Mar 2023 12:30:47 +0000 (14:30 +0200)]
tree-optimization/54498 - testcase for the bug

I realized I never added a testcase for the fix of this bug.  Now done
after verifying it still fails when reverting the fix.

PR tree-optimization/54498
* g++.dg/torture/pr54498.C: New testcase.

15 months agotree-optimization/108357 - add testcase
Richard Biener [Mon, 27 Mar 2023 12:22:56 +0000 (14:22 +0200)]
tree-optimization/108357 - add testcase

The following adds the testcase for the bug which was recently
fixed.

PR tree-optimization/108357
* gcc.dg/tree-ssa/pr108357.c: New testcase.

15 months agotarget/109296 - riscv: Add missing mode specifiers for XTheadMemPair
Christoph Müllner [Mon, 27 Mar 2023 10:51:51 +0000 (12:51 +0200)]
target/109296 - riscv: Add missing mode specifiers for XTheadMemPair

This patch adds missing mode specifiers for XTheadMemPair INSNs.

gcc/ChangeLog:
PR target/109296
* config/riscv/thead.md: Add missing mode specifiers.

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
15 months agolibstdc++: Fix up experimental/net/timer/waitable/dest.cc testcase
Jakub Jelinek [Mon, 27 Mar 2023 10:02:06 +0000 (12:02 +0200)]
libstdc++: Fix up experimental/net/timer/waitable/dest.cc testcase

In Fedora package build I've noticed a failure
/builddir/build/BUILD/gcc-13.0.1-20230324/libstdc++-v3/testsuite/experimental/net/timer/waitable/dest.cc: In function 'void test01()':
/builddir/build/BUILD/gcc-13.0.1-20230324/libstdc++-v3/testsuite/experimental/net/timer/waitable/dest.cc:41: warning: format '%lu' expects argument of type 'long unsigned int', but a
rgument 2 has type 'unsigned int' [-Wformat=]
FAIL: experimental/net/timer/waitable/dest.cc (test for excess errors)
Excess errors:
/builddir/build/BUILD/gcc-13.0.1-20230324/libstdc++-v3/testsuite/experimental/net/timer/waitable/dest.cc:41: warning: format '%lu' expects argument of type 'long unsigned int', but
+argument 2 has type 'unsigned int' [-Wformat=]
because we build with -Wformat.

The test uses %lu for size_t argument, which can be anything from unsigned
int to unsigned long long.  As for printf I'm not sure we can use %zu
portably and given the n == 1 assertion, I think the options are to kill
the printf, or cast to long.

2023-03-27  Jakub Jelinek  <jakub@redhat.com>

* testsuite/experimental/net/timer/waitable/dest.cc: Avoid -Wformat
warning if size_t is not unsigned long.

15 months agoaarch64: update ampere1 vectorization cost
Philipp Tomsich [Mon, 27 Mar 2023 07:16:22 +0000 (09:16 +0200)]
aarch64: update ampere1 vectorization cost

The original submission of AmpereOne (-mcpu=ampere1) costs occurred
prior to exhaustive testing of vectorizable workloads against
hardware.

Adjust the vector costs to achieve the best results and more closely
match the underlying hardware.

gcc/ChangeLog:

* config/aarch64/aarch64.cc: Update vector costs for ampere1.

Co-Authored-By: Jiangning Liu <jiangning.liu@amperecomputing.com>
Co-Authored-By: Manolis Tsamis <manolis.tsamis@vrull.eu>
15 months agofix: pytest error
Martin Liska [Mon, 27 Mar 2023 08:03:26 +0000 (10:03 +0200)]
fix: pytest error

Fixes:
gcc/testsuite/lib/verify-sarif-file.py:10:27: Q000 Double quotes found but single quotes preferred

gcc/testsuite/ChangeLog:

* lib/verify-sarif-file.py: Use apostrophes instead
of double quotes.

15 months agortl-optimization/109237 - speedup bb_is_just_return
Richard Biener [Wed, 22 Mar 2023 09:05:19 +0000 (10:05 +0100)]
rtl-optimization/109237 - speedup bb_is_just_return

For the testcase bb_is_just_return is on top of the profile, changing
it to walk BB insns backwards puts it off the profile.  That's because
in the forward walk you have to process possibly many debug insns
but in a backward walk you very likely run into control insns first.

PR rtl-optimization/109237
* cfgcleanup.cc (bb_is_just_return): Walk insns backwards.

15 months agolto/109263 - lto-wrapper and -g0 -ggdb
Richard Biener [Thu, 23 Mar 2023 15:56:53 +0000 (16:56 +0100)]
lto/109263 - lto-wrapper and -g0 -ggdb

The following makes lto-wrapper deal with non-combined debug
disabling / enabling option combinations properly.  Interestingly
-gno-dwarf also enables debug.

PR lto/109263
* lto-wrapper.cc (run_gcc): Parse alternate debug options
as well, they always enable debug.

15 months agors6000: Make _mm_slli_si128 and _mm_bslli_si128 consistent [PR109167]
Kewen Lin [Mon, 27 Mar 2023 02:43:39 +0000 (21:43 -0500)]
rs6000: Make _mm_slli_si128 and _mm_bslli_si128 consistent [PR109167]

As PR109167 shows, it's unexpected to have two different
implementation ways for _mm_slli_si128 and _mm_bslli_si128,
as gcc/config/i386/emmintrin.h they should be the same.  So
this patch is to fix it accordingly.

PR target/109167

gcc/ChangeLog:

* config/rs6000/emmintrin.h (_mm_bslli_si128): Move the implementation
from ...
(_mm_slli_si128): ... here.  Change to call _mm_bslli_si128 directly.

gcc/testsuite/ChangeLog:

* gcc.target/powerpc/pr109167.c: New test.

15 months agors6000: Ensure vec_sld shift count in allowable range [PR109082]
Kewen Lin [Mon, 27 Mar 2023 02:42:23 +0000 (21:42 -0500)]
rs6000: Ensure vec_sld shift count in allowable range [PR109082]

As PR109082 shows, some uses of vec_sld in emmintrin.h don't
strictly guarantee the given shift count is in the range
0-15 (inclusive).  This patch is to make the argument
range constraint honored for those uses.

PR target/109082

gcc/ChangeLog:

* config/rs6000/emmintrin.h (_mm_bslli_si128): Check __N is not less
than zero when calling vec_sld.
(_mm_bsrli_si128): Return __A if __N is zero, check __N is bigger than
zero when calling vec_sld.
(_mm_slli_si128): Return __A if _imm5 is zero, check _imm5 is bigger
than zero when calling vec_sld.

gcc/testsuite/ChangeLog:

* gcc.target/powerpc/pr109082.c: New test.

15 months agoDocs, OpenMP: Correct internal documentation of OMP_FOR.
Sandra Loosemore [Tue, 21 Mar 2023 22:15:33 +0000 (22:15 +0000)]
Docs, OpenMP: Correct internal documentation of OMP_FOR.

gcc/ChangeLog:

* doc/generic.texi (OpenMP): Document OMP_SIMD, OMP_DISTRIBUTE,
OMP_TASKLOOP, and OMP_LOOP with OMP_FOR.  Document how collapsed
loops are represented and which fields are vectors.  Add
documentation for OMP_FOR_PRE_BODY field.  Document internal
form of non-rectangular loops and OMP_FOR_NON_RECTANGULAR.

* tree.def (OMP_FOR): Make documentation consistent with the
Texinfo manual, to fill some gaps and correct errors.

15 months agoDaily bump.
GCC Administrator [Mon, 27 Mar 2023 00:16:43 +0000 (00:16 +0000)]
Daily bump.

15 months agom68k: handle TLS access with offset
Andreas Schwab [Sun, 17 Jul 2022 21:35:05 +0000 (23:35 +0200)]
m68k: handle TLS access with offset

This reinstates FINAL_PRESCAN_INSN, and the calls in handle_move_double,
so that access to TLS variables with offset are properly handled.

gcc:
PR target/106282
* config/m68k/m68k.h (FINAL_PRESCAN_INSN): Define.
* config/m68k/m68k.cc (m68k_final_prescan_insn): Define.
(handle_move_double): Call it before handle_movsi.
* config/m68k/m68k-protos.h: Declare it.

gcc/testsuite:
PR target/106282
* gcc.target/m68k/tls-gd-off.c: New.
* gcc.target/m68k/tls-ie-off.c: New.
* gcc.target/m68k/tls-ld-off.c: New.
* gcc.target/m68k/tls-ld-xtls-off.c: New.
* gcc.target/m68k/tls-le-off.c: New.
* gcc.target/m68k/tls-le-xtls-off.c: New.
* gcc.target/m68k/tls-ld.c: Make pattern less strict.
* gcc.target/m68k/tls-le.c: Likewise.

15 months agomatch.pd: Fix up fneg/fadd simplification [PR109230]
Jakub Jelinek [Sun, 26 Mar 2023 18:17:00 +0000 (20:17 +0200)]
match.pd: Fix up fneg/fadd simplification [PR109230]

The following testcase is miscompiled on aarch64-linux.  match.pd
has a simplification for addsub, where it negates one of the vectors
in twice as large floating point element vector (effectively negating every
other element) and then doing addition.
But a requirement for that is that the permutation picks the right elements,
in particular 0, nelts+1, 2, nelts+3, 4, nelts+5, ...
The pattern tests this with sel.series_p (0, 2, 0, 2) check, which as
documented verifies that the even elements of the permutation mask are
identity, but doesn't say anything about the others.
The following patch fixes it by also checking that the odd elements
start at nelts + 1 with the same step of 2.

2023-03-26  Jakub Jelinek  <jakub@redhat.com>

PR tree-optimization/109230
* match.pd (fneg/fadd simplify): Verify also odd permutation indexes.

* gcc.dg/pr109230.c: New test.

15 months agopredict: Don't emit -Wsuggest-attribute=cold warning for functions which already...
Jakub Jelinek [Sun, 26 Mar 2023 18:15:05 +0000 (20:15 +0200)]
predict: Don't emit -Wsuggest-attribute=cold warning for functions which already have that attribute [PR105685]

In the following testcase, we predict baz to have cold
entry regardless of the user supplied attribute (as it call
unconditionally a cold function), but still issue
a -Wsuggest-attribute=cold warning despite it having that attribute
already.

The following patch avoids that.

2023-03-26  Jakub Jelinek  <jakub@redhat.com>

PR ipa/105685
* predict.cc (compute_function_frequency): Don't call
warn_function_cold if function already has cold attribute.

* c-c++-common/cold-2.c: New test.

15 months agodoc: Remove anachronistic note related to languages built
Gerald Pfeifer [Sun, 26 Mar 2023 10:21:31 +0000 (12:21 +0200)]
doc: Remove anachronistic note related to languages built

This is another instance of what ce51e8439a49 (and originally
05432288d4e5) addressed in a different part. We stopped shipping
granular tarballs years ago.

gcc/ChangeLog:

* doc/install.texi: Remove anachronistic note
related to languages built and separate source tarballs.

15 months agoDaily bump.
GCC Administrator [Sun, 26 Mar 2023 00:16:45 +0000 (00:16 +0000)]
Daily bump.

15 months agoFortran: remove dead code [PR104321]
Harald Anlauf [Sat, 25 Mar 2023 18:59:45 +0000 (19:59 +0100)]
Fortran: remove dead code [PR104321]

gcc/fortran/ChangeLog:

PR fortran/104321
* trans-decl.cc (gfc_conv_cfi_to_gfc): Remove dead code.

15 months agodiagnostics: ensure that .sarif files are UTF-8 encoded [PR109098]
David Malcolm [Sat, 25 Mar 2023 00:52:34 +0000 (20:52 -0400)]
diagnostics: ensure that .sarif files are UTF-8 encoded [PR109098]

PR analyzer/109098 notes that the SARIF spec mandates that .sarif
files are UTF-8 encoded, but -fdiagnostics-format=sarif-file naively
assumes that the source files are UTF-8 encoded when quoting source
artefacts in the .sarif output, which can lead to us writing out
.sarif files with non-UTF-8 bytes in them (which break my reporting
scripts).

The root cause is that sarif_builder::maybe_make_artifact_content_object
was using maybe_read_file to load the file content as bytes, and
assuming they were UTF-8 encoded.

This patch reworks both overloads of this function (one used for the
whole file, the other for snippets of quoted lines) so that they go
through input.cc's file cache, which attempts to decode the input files
according to the input charset, and then encode as UTF-8.  They also
check that the result actually is UTF-8, for cases where the input
charset is missing, or incorrectly specified, and omit the quoted
source for such awkward cases.

Doing so fixes all of the cases I've encountered.

The patch adds a new:
  { dg-final { verify-sarif-file } }
directive to all SARIF test cases in the test suite, which verifies
that the output is UTF-8 encoded, and is valid JSON.  In particular
it verifies that when we complain about encoding problems, the .sarif
report we emit is itself correctly encoded.

gcc/ChangeLog:
PR analyzer/109098
* diagnostic-format-sarif.cc (read_until_eof): Delete.
(maybe_read_file): Delete.
(sarif_builder::maybe_make_artifact_content_object): Use
get_source_file_content rather than maybe_read_file.
Reject it if it's not valid UTF-8.
* input.cc (file_cache_slot::get_full_file_content): New.
(get_source_file_content): New.
(selftest::check_cpp_valid_utf8_p): New.
(selftest::test_cpp_valid_utf8_p): New.
(selftest::input_cc_tests): Call selftest::test_cpp_valid_utf8_p.
* input.h (get_source_file_content): New prototype.

gcc/testsuite/ChangeLog:
PR analyzer/109098
* c-c++-common/diagnostic-format-sarif-file-1.c: Add
verify-sarif-file directive.
* c-c++-common/diagnostic-format-sarif-file-2.c: Likewise.
* c-c++-common/diagnostic-format-sarif-file-3.c: Likewise.
* c-c++-common/diagnostic-format-sarif-file-4.c: Likewise.
* c-c++-common/diagnostic-format-sarif-file-Wbidi-chars.c: New
test case, adapted from Wbidi-chars-1.c.
* c-c++-common/diagnostic-format-sarif-file-bad-utf8-pr109098-1.c:
New test case.
* c-c++-common/diagnostic-format-sarif-file-bad-utf8-pr109098-2.c:
New test case.
* c-c++-common/diagnostic-format-sarif-file-bad-utf8-pr109098-3.c:
New test case, adapted from cpp/Winvalid-utf8-1.c.
* c-c++-common/diagnostic-format-sarif-file-valid-CP850.c: New
test case, adapted from gcc.dg/diagnostic-input-charset-1.c.
* gcc.dg/plugin/crash-test-ice-sarif.c: Add verify-sarif-file
directive.
* gcc.dg/plugin/crash-test-write-though-null-sarif.c: Likewise.
* gcc.dg/plugin/diagnostic-test-paths-5.c: Likewise.
* lib/scansarif.exp (verify-sarif-file): New procedure.
* lib/verify-sarif-file.py: New support script.

libcpp/ChangeLog:
PR analyzer/109098
* charset.cc (cpp_valid_utf8_p): New function.
* include/cpplib.h (cpp_valid_utf8_p): New prototype.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>
15 months agoDaily bump.
GCC Administrator [Sat, 25 Mar 2023 00:16:51 +0000 (00:16 +0000)]
Daily bump.

15 months agodocs, analyzer: improvements to "Debugging the Analyzer"
David Malcolm [Fri, 24 Mar 2023 23:52:08 +0000 (19:52 -0400)]
docs, analyzer: improvements to "Debugging the Analyzer"

gcc/ChangeLog:
* doc/analyzer.texi (Debugging the Analyzer): Add notes on useful
debugging options.
(Special Functions for Debugging the Analyzer): Convert to a
table, and rewrite in places.
(Other Debugging Techniques): Add notes on how to compare two
different exploded graphs.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>
15 months agogo: Fix up go.test/test/fixedbugs/bug207.go failure [PR109258]
Jakub Jelinek [Fri, 24 Mar 2023 22:02:08 +0000 (23:02 +0100)]
go: Fix up go.test/test/fixedbugs/bug207.go failure [PR109258]

The PR109086 r13-6690 inline_string_cmp change to
      if (diff != result)
        emit_move_insn (result, diff);
regressed
FAIL: go.test/test/fixedbugs/bug207.go,  -O2 -g  (internal compiler error: in emit_move_insn, at expr.cc:4224)
The problem is the Go FE doesn't mark __builtin_memcmp as pure as other FEs,
so we ended up with
  __builtin_memcmp (whatever, whateverelse, somesize);
in the IL before expansion and the expansion ICEd on it.
As the builtin calls a library function which is pure or is inline expanded
as such, not marking it pure is an unnecessary pessimization from the FE
side, keeping such dead calls in the IL if they aren't needed will not help
anything.

The following patch fixes that.  Initially I've added just DECL_PURE_P to
it, but that unfortunately broke bootstrap, for __builtin_memcmp there is
also __builtin_memcmp_eq registered by the middle-end code if not registered
earlier and that one is registered with the usual flags (pure, nothrow,
leaf), so if __builtin_memcmp from FE was just pure, it would appear in the
IL as that it can raise exceptions and when folded into __builtin_memcmp_eq
all of sudden it couldn't and we'd ICE in verification.

I think tons of functions should have builtin_nothrow as well, but changing
that wasn't necessary for this fix.

2023-03-24  Jakub Jelinek  <jakub@redhat.com>

PR middle-end/109258
* go-gcc.cc (Gcc_backend): Add new static data members builtin_pure
and builtin_nothrow.
(Gcc_backend::Gcc_backend): Pass builtin_pure | builtin_nothrow for
BUILT_IN_MEMCMP.
(Gcc_backend::define_builtin): Handle builtin_pure and builtin_nothrow
in flags.

15 months agoFortran: fix FE memleak with BOZ expressions.
Harald Anlauf [Fri, 24 Mar 2023 21:07:37 +0000 (22:07 +0100)]
Fortran: fix FE memleak with BOZ expressions.

gcc/fortran/ChangeLog:

* expr.cc (free_expr0): Free also BOZ strings as part of an expression.

15 months agoc++: outer 'this' leaking into local class [PR106969]
Patrick Palka [Fri, 24 Mar 2023 18:51:24 +0000 (14:51 -0400)]
c++: outer 'this' leaking into local class [PR106969]

Here when resolving the implicit object for '&wrapped' within the
local class Foo, we expect to obtain a dummy object of type Foo& since
there's no 'this' available in this context.  And yet at this point
current_class_ref still corresponds to the outer class Context (and is
const), which confuses maybe_dummy_object into propagating the cv-quals
of current_class_ref and returning an object of type const Foo&.  Thus
decltype(&wrapped) wrongly yields const int* instead of int*.

The problem ultimately seems to be that the 'this' from the enclosing
class appears available for use when parsing the local class, but 'this'
shouldn't persist across classes like that.  This patch fixes this by
clearing current_class_ptr/ref before parsing a class definition.

After this change, for the test name-clash11.C in C++98 mode we would
now complain about an invalid use of 'this' in e.g.

  ASSERT (sizeof (this->A) == 16);

due to the way the test defines the ASSERT macro via a local class.
This patch redefines the macro using a local typedef instead.

PR c++/106969

gcc/cp/ChangeLog:

* parser.cc (cp_parser_class_specifier): Clear current_class_ptr
and current_class_ref sooner, before parsing a class definition.

gcc/testsuite/ChangeLog:

* g++.dg/lookup/name-clash11.C: Fix ASSERT macro definition in
C++98 mode.
* g++.dg/lookup/this2.C: New test.

15 months agolibatomic: Fix SEQ_CST 128-bit atomic load [PR108891]
Wilco Dijkstra [Fri, 10 Feb 2023 17:41:05 +0000 (17:41 +0000)]
libatomic: Fix SEQ_CST 128-bit atomic load [PR108891]

The LSE2 ifunc for 16-byte atomic load requires a barrier before the LDP -
without it, it effectively has Load-AcquirePC semantics similar to LDAPR,
which is less restrictive than what __ATOMIC_SEQ_CST requires.  This patch
fixes this and adds comments to make it easier to see which sequence is
used for each case.  Use a load/store exclusive loop for store to simplify
testing memory ordering is correct (it is slightly faster too).

libatomic/
PR libgcc/108891
* config/linux/aarch64/atomic_16.S: Fix libat_load_16_i1.
Add comments describing the memory order.

15 months agolibgomp.texi: Fix wording in GCN offload specifics
Tobias Burnus [Fri, 24 Mar 2023 16:32:59 +0000 (17:32 +0100)]
libgomp.texi: Fix wording in GCN offload specifics

libgomp/
* libgomp.texi (Offload-Target Specifics): Grammar fix.

15 months agoc++: default template arg, partial ordering [PR105481]
Jason Merrill [Thu, 23 Mar 2023 22:20:52 +0000 (18:20 -0400)]
c++: default template arg, partial ordering [PR105481]

The default argument code in type_unification_real was assuming that all
targs we've deduced by that point are non-dependent, but that's not the case
for partial ordering.

PR c++/105481

gcc/cp/ChangeLog:

* pt.cc (type_unification_real): Adjust for partial ordering.

gcc/testsuite/ChangeLog:

* g++.dg/cpp0x/fntmpdefarg-partial1.C: New test.

15 months agoAdd caveat/safeguard to OpenMP: Handle descriptors in target's firstprivate [PR104949]
Thomas Schwinge [Thu, 23 Mar 2023 11:32:35 +0000 (12:32 +0100)]
Add caveat/safeguard to OpenMP: Handle descriptors in target's firstprivate [PR104949]

Follow-up to commit 49d1a2f91325fa8cc011149e27e5093a988b3a49
"OpenMP: Handle descriptors in target's firstprivate [PR104949]".

PR fortran/104949
libgomp/
* target.c (gomp_map_vars_internal) <GOMP_MAP_FIRSTPRIVATE>: Add
caveat/safeguard.

15 months agojson: preserve key-insertion order [PR109163]
David Malcolm [Fri, 24 Mar 2023 15:38:14 +0000 (11:38 -0400)]
json: preserve key-insertion order [PR109163]

PR other/109163 notes that when we write out JSON files, we traverse
the keys within each object via hash_map iteration, and thus the
ordering is non-deterministic - it can arbitrarily vary from run to
run and from different machines, making it harder for users to compare
results and determine if anything has "really" changed.

I'm running into this issue with SARIF output, but there are several
places where we're currently emitting JSON:

  * -fsave-optimization-record emits SRCFILE.opt-record.json.gz
"This option is experimental and the format of the data within
the compressed JSON file is subject to change."; see
optinfo-emit-json.{h,cc}, dumpfile.cc, etc
  * -fdiagnostics-format= with the various "sarif" and "json" options
  * -fdump-analyzer-json is a developer option in the analyzer
  * gcov has:
     "-j, --json-format: Output JSON intermediate format into
     .gcov.json.gz file"

This patch adds an auto_vec to class json::object to preserve
key-insertion order, and use it when writing out objects.  Potentially
this slightly slows down JSON output, but I believe that this isn't
normally a bottleneck, and that the benefits to the user of
deterministic output are worth it.

I had first attempted to use ordered_hash_map.h for this, but ran into
impenetrable template errors, so this patch uses a simpler approach of
just adding an auto_vec to json::object.

Testing showed a failure of diagnostic-format-json-5.c, which was using
a convoluted set of regexps to consume the output; I believe that this
was brittle, and was intermittently failing for some of the random
orderings of output.  I rewrote these regexps to work with the expected
output order.  The other such tests seem to pass with the
now-deterministic orderings.

gcc/ChangeLog:
PR other/109163
* json.cc: Update comments to indicate that we now preserve
insertion order of keys within objects.
(object::print): Traverse keys in insertion order.
(object::set): Preserve insertion order of keys.
(selftest::test_writing_objects): Add an additional key to verify
that we preserve insertion order.
* json.h (object::m_keys): New field.

gcc/testsuite/ChangeLog:
PR other/109163
* c-c++-common/diagnostic-format-json-1.c: Update comment.
* c-c++-common/diagnostic-format-json-2.c: Likewise.
* c-c++-common/diagnostic-format-json-3.c: Likewise.
* c-c++-common/diagnostic-format-json-4.c: Likewise.
* c-c++-common/diagnostic-format-json-5.c: Rewrite regexps.
* c-c++-common/diagnostic-format-json-stderr-1.c: Update comment.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>
15 months agoRanger cache dominator queries should ignore backedges.
Andrew MacLeod [Thu, 23 Mar 2023 14:28:34 +0000 (10:28 -0400)]
Ranger cache dominator queries should ignore backedges.

When querying dominators for cache values, ignore back edges in
read-only mode.

PR tree-optimization/109238
gcc/
* gimple-range-cache.cc (ranger_cache::resolve_dom): Ignore
predecessors which this block dominates.

gcc/testsuite/
* gcc.dg/pr109238.c: New.

15 months agotree-optimization/106912 - clear const attribute from fntype
Richard Biener [Thu, 16 Mar 2023 12:51:19 +0000 (13:51 +0100)]
tree-optimization/106912 - clear const attribute from fntype

The following makes sure that after clearing pure/const from
instrumented function declarations we are adjusting call statements
fntype as well to handle indirect calls and because gimple_call_flags
looks at both decl and fntype.

Like the pure/const flag clearing on decls we refrain from touching
calls to known functions that do not have a body in the current TU.

PR tree-optimization/106912
* tree-profile.cc (tree_profiling): Update stmts only when
profiling or testing coverage.  Make sure to update calls
fntype, stripping 'const' there.

* gcc.dg/profile-generate-4.c: New testcase.

15 months agomodula2: Enable iso-extended-opaque-run-pass.exp to build library tests
Gaius Mulley [Fri, 24 Mar 2023 12:16:44 +0000 (12:16 +0000)]
modula2: Enable iso-extended-opaque-run-pass.exp to build library tests

This patch fixes the tcl test script iso-extended-opaque-run-pass.exp so
that the test library modules are built and included with the link command.

gcc/testsuite/ChangeLog:

* gm2/projects/iso/small/run/pass/iso-extended-opaque-run-pass.exp:
Compile object for stressset.mod and testlib.mod.  Add test so
that we only link these objects with test application objects.

Signed-off-by: Gaius Mulley <gaiusmod2@gmail.com>
15 months agobuiltins: Fix up ICE in inline_string_cmp [PR109258]
Jakub Jelinek [Fri, 24 Mar 2023 09:38:42 +0000 (10:38 +0100)]
builtins: Fix up ICE in inline_string_cmp [PR109258]

The PR109086 r13-6690 inline_string_cmp change to
      if (diff != result)
        emit_move_insn (result, diff);
regressed
FAIL: go.test/test/fixedbugs/bug207.go,  -O2 -g  (internal compiler error: in emit_move_insn, at expr.cc:4224)
The problem is the Go FE doesn't mark __builtin_memcmp as pure (I'll also
send patch for that) and so result is const0_rtx when the call lost its lhs
and the above move ICEs because moving something into const0_rtx is obviously
invalid.
I think it is better not to rely on all FEs having these *cmp functions
pure anD DCE being performed.  The following patch just punts from the
inline expansion in that case, so we just emit normal library call.

2023-03-24  Jakub Jelinek  <jakub@redhat.com>

PR middle-end/109258
* builtins.cc (inline_expand_builtin_bytecmp): Return NULL_RTX early
if target == const0_rtx.

15 months agotestsuite: Fix up gcc.target/i386/pr109137.c testcase [PR109137]
Jakub Jelinek [Fri, 24 Mar 2023 08:42:18 +0000 (09:42 +0100)]
testsuite: Fix up gcc.target/i386/pr109137.c testcase [PR109137]

The testcase has a couple of small problems:
1) had -m32 in dg-options, that should never be done, instead the test
   should be guarded on ia32
2) adds -fPIC unconditionally (that should be guarded on fpic effective
   target)
3) using #include <string.h> for a RA test seems unnecessary, __builtin_memset
   handles it without the header

2023-03-24  Jakub Jelinek  <jakub@redhat.com>

PR target/109137
* gcc.target/i386/pr109137.c: Remove -m32 from dg-options, instead
require ia32 effective target.  Only add -fPIC for fpic effective
target.  Remove #include <string.h>, use __builtin_memset instead of
memset.

15 months agotestsuite: Add testcase for already fixed PR [PR99739]
Jakub Jelinek [Fri, 24 Mar 2023 08:39:59 +0000 (09:39 +0100)]
testsuite: Add testcase for already fixed PR [PR99739]

This PR was fixed by r13-1268-g8c99e307b20, I'm adding testcase
to make sure we don't regress on it in the future.

2023-03-24  Jakub Jelinek  <jakub@redhat.com>

PR tree-optimization/99739
* gcc.dg/tree-ssa/pr99739.c: New test.

15 months ago[testsuite] test for weak_undefined support and add options
Alexandre Oliva [Thu, 23 Mar 2023 03:45:05 +0000 (00:45 -0300)]
[testsuite] test for weak_undefined support and add options

A number of tests that depend on weak undefined symbols fail to
require that support, and arrange to skip some targets and add special
options to others on a test-by-test basis.  Fix this by stating the
requirement explicitly, and adding a proc to return any required
options.

Others rely on weak undefined symbols only to test for the
availability of posix_memalign.  Drop that in favor of dg effective
target support for posix_memalign.

for  gcc/ChangeLog

* doc/sourcebuild.texi (weak_undefined, posix_memalign):
Document options and effective targets.

for  gcc/testsuite/ChangeLog

* lib/target-supports.exp (add_options_for_weak_undefined):
New.
(check_effective_target_weak_undefined): Use it.
(check_effective_target_posix_memalign): New.
* gcc.dg/torture/pr53922.c: Drop skips and custom options in
favor of effective target requirement and added options for
weak_undefined symbols.
* gcc.dg/torture/pr90020.c: Likewise.
* gcc.dg/addr_equal-1.c: Likewise.
* gcc.target/aarch64/aapcs64/aapcs64.exp: Likewise, for
abitest.S-using tests.
* gcc.dg/torture/pr60092.c: Likewise, but in favor of
posix_memalign tests.
* gcc.dg/vect/vect-tail-nomask-1.c: Likewise.

15 months agoFortran: Escalate failure when Hollerith constant to real conversion fails
Haochen Gui [Fri, 24 Mar 2023 02:45:52 +0000 (10:45 +0800)]
Fortran: Escalate failure when Hollerith constant to real conversion fails

gcc/fortran/
PR target/103628
* target-memory.cc (gfc_interpret_float): Return FAIL when
native_interpret_expr gets a NULL tree.
* arith.cc (gfc_hollerith2real): Return NULL when
gfc_interpret_float fails.
* error.cc (gfc_buffered_p): Define.
* gfortran.h (gfc_buffered_p): Declare.
* intrinsic.cc: Add diagnostic.h to include list.
(do_simplify): Save errorcount and check it at finish.  Report a
"Cannot simplify expression" error on a bad result if error count
doesn't change and no other errors buffered.

gcc/testsuite/
PR target/103628
* gfortran.dg/assumed_size_refs_2.f90: Check "Cannot simplify
expression" error.
* gfortran.dg/unpack_field_1.f90: Likewise.
* gfortran.dg/pr103628.f90: New.

Co-Authored-By: Tobias Burnus <tobias@codesourcery.com>
15 months agoFix native MSYS2 build failure [PR108865, PR109188]
Costas Argyris [Wed, 22 Mar 2023 10:28:08 +0000 (10:28 +0000)]
Fix native MSYS2 build failure [PR108865, PR109188]

Don't cause an error if the symbol is not found.

When building natively as an MSYS2 package, some
executables are borrowing the $(COMPILERS) flags
and --require-defined=HOST_EXTRA_OBJS_SYMBOL is
causing them to fail.

These executables don't need that symbol, so make
it optional such that they don't error out.

The compilers will still look for it (and find it)
with the desired effect of getting UTF-8 support.

PR/PR108865

gcc/ChangeLog:

* config/i386/x-mingw32-utf8: Make HOST_EXTRA_OBJS_SYMBOL
optional.

Signed-off-by: Jonathan Yong <10walls@gmail.com>
15 months agoDaily bump.
GCC Administrator [Fri, 24 Mar 2023 00:16:56 +0000 (00:16 +0000)]
Daily bump.

15 months agoc++: constexpr PMF conversion [PR105996]
Jason Merrill [Thu, 23 Mar 2023 20:50:09 +0000 (16:50 -0400)]
c++: constexpr PMF conversion [PR105996]

Here, we were calling build_reinterpret_cast regardless of whether there was
actually a cast, and that now sets REINTERPRET_CAST_P.  But that
optimization seems dodgy anyway, as it involves NOP_EXPR from one
RECORD_TYPE to another and we try to reserve NOP_EXPR for fundamental types.
And the generated code seems the same, so let's drop it.  And also strip
location wrappers.

PR c++/105996

gcc/cp/ChangeLog:

* typeck.cc (build_ptrmemfunc): Drop 0-offset optimization
and location wrappers.

gcc/testsuite/ChangeLog:

* g++.dg/cpp0x/constexpr-pmf3.C: New test.

15 months agotestsuite: Xfail gcc.dg/tree-ssa/ssa-fre-100.c for ! natural_alignment_32
Hans-Peter Nilsson [Thu, 23 Mar 2023 14:46:05 +0000 (15:46 +0100)]
testsuite: Xfail gcc.dg/tree-ssa/ssa-fre-100.c for ! natural_alignment_32

The test gcc.dg/tree-ssa/ssa-fre-100.c fails the
scan-tree-dump-not fre1 "baz" for at least m68k-linux,
pru-elf, and cris-elf according to posts on gcc-testresults.

GCC requires int-size-alignment for a target to see through
the "int *" dereference and perform value-numbering.  See
comments in PR91419 and also the recent patch to
gcc.dg/tree-ssa/pr100359.c.  This is a flaw in gcc rather
than the target, so prefer an xfail rather than skipping
the test.

* gcc.dg/tree-ssa/ssa-fre-100.c: XFAIL for ! natural_alignment_32.

15 months agotestsuite: Compile-only gcc.dg/tree-ssa/pr100359.c if ! natural_alignment_32
Hans-Peter Nilsson [Tue, 21 Mar 2023 15:09:23 +0000 (16:09 +0100)]
testsuite: Compile-only gcc.dg/tree-ssa/pr100359.c if ! natural_alignment_32

The test gcc.dg/tree-ssa/pr100359.c fails the "test for
excess errors" for at least m68k-linux, pru-elf, and
cris-elf according to posts on gcc-testresults.  For
cris-elf, the "excess errors" is a failure to link; an
undefined reference to foo, because the code has a call to
an extern function foo, which is not optimized away, and
which is not defined.  I guess it's the same for those other
targets.

From comparative gdb sessions for native x86_64-linux and
cris-elf, I see tree-ssa-sccvn.cc:vn_reference_lookup_3
(called from the "pre" pass) requires int-size-alignment for
a target to see through the "int *" dereference, that the
expression is constant false and subsequently optimize away
the call to foo.  The conclusion is with substantially less
effort available from comments in PR91419.

The point of the test seems only incidental to
optimizing-out the call to foo, judging from the comments in
PR100359, so an alternative is compile it (not link it) for
all targets.  However, I chose to not change the nature of
the test where it passes.

* gcc.dg/tree-ssa/pr100359.c: Compile-only for ! natural_alignment_32.

15 months agoDon't force target of modulo into a distinct register.
Pat Haugen [Thu, 23 Mar 2023 19:08:00 +0000 (14:08 -0500)]
Don't force target of modulo into a distinct register.

The define_insns for the modulo operation currently force the target register
to a distinct reg in preparation for a possible future peephole combining
div/mod. But this can lead to cases of a needless copy being inserted. Fixed
with the following patch.

gcc/
* config/rs6000/rs6000.md (*mod<mode>3, umod<mode>3): Add
non-earlyclobber alternative.

gcc/testsuite/
* gcc.target/powerpc/mod-no_copy.c: New.
* gcc.target/powerpc/mod-peephole.c: New.

15 months agoc: [PR84900] cast of compound literal does not cause the code to become a non-lvalue
Andrew Pinski [Thu, 23 Mar 2023 02:10:11 +0000 (02:10 +0000)]
c: [PR84900] cast of compound literal does not cause the code to become a non-lvalue

The problem here is after r0-92187-g2ec5deb5c3146c, maybe_lvalue_p would
return false for compound literals which causes non_lvalue_loc not
to wrap the expression with a NON_LVALUE_EXPR unlike before when it
return true as it returns true for all language specific tree codes.

This fixes that oversight and fixes the testcase to have the cast as
a non-lvalue.

Committed to the trunk as obvious after a bootstrap/test on x86_64-linux-gnu.

PR c/84900

gcc/ChangeLog:

* fold-const.cc (maybe_lvalue_p): Treat COMPOUND_LITERAL_EXPR
as a lvalue.

gcc/testsuite/ChangeLog:

* gcc.dg/compound-literal-cast-lvalue-1.c: New test.

15 months agoPR modula2/109264 Bugfix resolve opaque types containing sets
Gaius Mulley [Thu, 23 Mar 2023 16:37:11 +0000 (16:37 +0000)]
PR modula2/109264 Bugfix resolve opaque types containing sets

Resolve opaque type handling.  The bug is caused by the compiler
attempting to resolve the meta types of a constant constructor.
It incorrectly attempts to get the type on an enumeration type
(resulting in NulSym) which causes the meta resolver to spin.
Some PHBuild rules (building records need to be copied from P3Build
so that hidden types are resolved in order across the compile.

gcc/m2/ChangeLog:

PR modula2/109264
* gm2-compiler/M2Quads.mod (BuildConstFunctionCall): Comment
out ErrorString in debugging block.
(BuildConstructorStart): Replace Assert with a call to
MetaErrorT3.  Import MetaErrorT3.
* gm2-compiler/PCSymBuild.mod (buildConstFunction): Rename
local variables.
(WalkFunctionParam): Remove test for IsEnumeration when
resolving MIN or MAX parameters.
* gm2-compiler/PHBuild.bnf (BlockAssert): New procedure.
(ErrorArrayat): New procedure.
(Expect): Renamed parameter t to tok.
(PushQualident): New rule.
(ConstSetOrQualidentOrFunction): Force AutoOn.
(TypeDeclaration): Add debugging assert.
(SimpleType): Add debugging assert.
(DefaultRecordAttributes): New rule (and bugfix).
(FieldPragmaExpression): New rule (and bugfix).
(PragmaConstExpression): New rule (and bugfix).
(SetOrDesignatorOrFunction): Add debugging assert.
(Block): Add debugging assert.
* gm2-gcc/m2expr.cc (m2expr_ConstantExpressionWarning): int
to bool.
* gm2-gcc/m2expr.h (m2expr_TreeOverflow): int to bool.
(m2expr_GetBooleanTrue): Remove.
(m2expr_GetBooleanFalse): Remove.
* gm2-gcc/m2options.h (M2Options_SetStatistics): Replace
int with bool.

gcc/testsuite/ChangeLog:

PR modula2/109264
* gm2/iso/extended-opaque/pass/iso-extended-opaque-pass.exp:
New test.
* gm2/iso/extended-opaque/pass/stressset.def: New test.
* gm2/iso/extended-opaque/pass/stressset.mod: New test.
* gm2/iso/extended-opaque/pass/testset.mod: New test.
* gm2/projects/iso/small/run/pass/iso-extended-opaque-run-pass.exp:
New test.
* gm2/projects/iso/small/run/pass/stressset.def: New test.
* gm2/projects/iso/small/run/pass/stressset.mod: New test.
* gm2/projects/iso/small/run/pass/test1.mod: New test.
* gm2/projects/iso/small/run/pass/testlib.def: New test.
* gm2/projects/iso/small/run/pass/testlib.mod: New test.
* gm2/projects/iso/small/run/pass/testset.mod: New test.

Signed-off-by: Gaius Mulley <gaiusmod2@gmail.com>
15 months agotree-optimization/107569 - avoid wrecking earlier folding in FRE/PRE
Richard Biener [Thu, 23 Mar 2023 13:52:01 +0000 (14:52 +0100)]
tree-optimization/107569 - avoid wrecking earlier folding in FRE/PRE

The following avoids picking up dead code left over from folding
during FRE/PRE, effectively undoing propagations.

PR tree-optimization/107569
* tree-ssa-sccvn.cc (eliminate_dom_walker::eliminate_stmt):
Do not push SSA names with zero uses as available leader.
(process_bb): Likewise.

* g++.dg/opt/pr107569.C: New testcase.

15 months agotree-optimization/109262 - ICE with non-call EH and forwprop
Richard Biener [Thu, 23 Mar 2023 14:50:59 +0000 (15:50 +0100)]
tree-optimization/109262 - ICE with non-call EH and forwprop

The recent combining of complex part loads to a complex load missed
to account for non-call EH.

PR tree-optimization/109262
* tree-ssa-forwprop.cc (pass_forwprop::execute): When
combining a piecewise complex load avoid touching loads
that throw internally.  Use fun, not cfun throughout.

* g++.dg/torture/pr109262.C: New testcase.

15 months agoranger: Ranger meets aspell
Jakub Jelinek [Thu, 23 Mar 2023 14:25:50 +0000 (15:25 +0100)]
ranger: Ranger meets aspell

I've noticed a comment typo in tree-vrp.cc and decided to quickly
skim aspell -c on the ranger sources (with quick I on everything that
looked ok or roughly ok).
But not being a native English speaker, I could get stuff wrong.

2023-03-23  Jakub Jelinek  <jakub@redhat.com>

* value-range.cc (irange::irange_union, irange::intersect): Fix
comment spelling bugs.
* gimple-range-trace.cc (range_tracer::do_header): Likewise.
* gimple-range-trace.h: Likewise.
* gimple-range-edge.cc: Likewise.
(gimple_outgoing_range_stmt_p,
gimple_outgoing_range::switch_edge_range,
gimple_outgoing_range::edge_range_p): Likewise.
* gimple-range.cc (gimple_ranger::prefill_stmt_dependencies,
gimple_ranger::fold_stmt, gimple_ranger::register_transitive_infer,
assume_query::assume_query, assume_query::calculate_phi): Likewise.
* gimple-range-edge.h: Likewise.
* value-range.h (Value_Range::set, Value_Range::lower_bound,
Value_Range::upper_bound, frange::set_undefined): Likewise.
* gimple-range-gori.h (range_def_chain::depend, gori_map::m_outgoing,
gori_compute): Likewise.
* gimple-range-fold.h (fold_using_range): Likewise.
* gimple-range-path.cc (path_range_query::compute_ranges_in_phis):
Likewise.
* gimple-range-gori.cc (range_def_chain::in_chain_p,
range_def_chain::dump, gori_map::calculate_gori,
gori_compute::compute_operand_range_switch,
gori_compute::logical_combine, gori_compute::refine_using_relation,
gori_compute::compute_operand1_range, gori_compute::may_recompute_p):
Likewise.
* gimple-range.h: Likewise.
(enable_ranger): Likewise.
* range-op.h (empty_range_varying): Likewise.
* value-query.h (value_query): Likewise.
* gimple-range-cache.cc (block_range_cache::set_bb_range,
block_range_cache::dump, ssa_global_cache::clear_global_range,
temporal_cache::temporal_value, temporal_cache::current_p,
ranger_cache::range_of_def, ranger_cache::propagate_updated_value,
ranger_cache::range_from_dom, ranger_cache::register_inferred_value):
Likewise.
* gimple-range-fold.cc (fur_edge::get_phi_operand,
fur_stmt::get_operand, gimple_range_adjustment,
fold_using_range::range_of_phi,
fold_using_range::relation_fold_and_or): Likewise.
* value-range-storage.h (irange_storage_slot::MAX_INTS): Likewise.
* value-query.cc (range_query::value_of_expr,
range_query::value_on_edge, range_query::query_relation): Likewise.
* tree-vrp.cc (remove_unreachable::remove_and_update_globals,
intersect_range_with_nonzero_bits): Likewise.
* gimple-range-infer.cc (gimple_infer_range::check_assume_func,
exit_range): Likewise.
* value-relation.h: Likewise.
(equiv_oracle, relation_trio::relation_trio, value_relation,
value_relation::value_relation, pe_min): Likewise.
* range-op-float.cc (range_operator_float::rv_fold,
frange_arithmetic, foperator_unordered_equal::op1_range,
foperator_div::rv_fold): Likewise.
* gimple-range-op.cc (cfn_clz::fold_range): Likewise.
* value-relation.cc (equiv_oracle::query_relation,
equiv_oracle::register_equiv, equiv_oracle::add_equiv_to_block,
value_relation::apply_transitive, relation_chain_head::find_relation,
dom_oracle::query_relation, dom_oracle::find_relation_block,
dom_oracle::find_relation_dom, path_oracle::register_equiv): Likewise.
* range-op.cc (range_operator::wi_fold_in_parts_equiv,
create_possibly_reversed_range, adjust_op1_for_overflow,
operator_mult::wi_fold, operator_exact_divide::op1_range,
operator_cast::lhs_op1_relation, operator_cast::fold_pair,
operator_cast::fold_range, operator_abs::wi_fold, range_op_cast_tests,
range_op_lshift_tests): Likewise.

15 months agoSkip gnat.dg/div_zero.adb on Aarch64
Eric Botcazou [Thu, 23 Mar 2023 14:10:51 +0000 (15:10 +0100)]
Skip gnat.dg/div_zero.adb on Aarch64

gcc/testsuite/
* gnat.dg/div_zero.adb: Skip for aarch64*-*-* targets.

15 months agoc++: further -Wdangling-reference refinement [PR107532]
Marek Polacek [Fri, 17 Mar 2023 18:36:10 +0000 (14:36 -0400)]
c++: further -Wdangling-reference refinement [PR107532]

Based on <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107532#c24>,
it seems like we should treat *any* class with a reference member
as a reference wrapper.  To suppress the warning in

  int i = 42;
  auto const& v = std::get<0>(std::tuple<int&>(i));

we have to look into base classes as well.  For std::tuple, this means
that we have to check the _Head_base subobject, which is a non-direct
base class of std::tuple.  So I've employed a DFS walk.

PR c++/107532

gcc/cp/ChangeLog:

* call.cc (class_has_reference_member_p): New.
(class_has_reference_member_p_r): New.
(reference_like_class_p): Don't look for a specific constructor.
Use a DFS walk with class_has_reference_member_p_r.

gcc/testsuite/ChangeLog:

* g++.dg/warn/Wdangling-reference11.C: New test.
* g++.dg/warn/Wdangling-reference12.C: New test.

15 months agoamdgcn: Fix register size bug
Andrew Stubbs [Fri, 17 Mar 2023 11:04:12 +0000 (11:04 +0000)]
amdgcn: Fix register size bug

Fix an issue in which "vectors" of duplicate entries placed in scalar
registers caused the following 63 registers to be marked live, for the
purpose of prologue generation, which resulted in stack corruption.

gcc/ChangeLog:

* config/gcn/gcn.cc (gcn_class_max_nregs): Handle vectors in SGPRs.
(move_callee_saved_registers): Detect the bug condition early.

15 months agoamdgcn: vec_extract no-op insns
Andrew Stubbs [Wed, 1 Mar 2023 15:32:50 +0000 (15:32 +0000)]
amdgcn: vec_extract no-op insns

Just using move insn for no-op conversions triggers special move handling in
IRA which declares that subreg of vectors aren't valid and routes everything
through memory.  These patterns make the vec_select explicit and all is well.

gcc/ChangeLog:

* config/gcn/gcn-protos.h (gcn_stepped_zero_int_parallel_p): New.
* config/gcn/gcn-valu.md (V_1REG_ALT): New.
(V_2REG_ALT): New.
(vec_extract<V_1REG:mode><V_1REG_ALT:mode>_nop): New.
(vec_extract<V_2REG:mode><V_2REG_ALT:mode>_nop): New.
(vec_extract<V_ALL:mode><V_ALL_ALT:mode>): Use new patterns.
* config/gcn/gcn.cc (gcn_stepped_zero_int_parallel_p): New.
* config/gcn/predicates.md (ascending_zero_int_parallel): New.

15 months agotree-vect-generic: Fix up expand_vector_condition [PR109176]
Jakub Jelinek [Thu, 23 Mar 2023 09:02:25 +0000 (10:02 +0100)]
tree-vect-generic: Fix up expand_vector_condition [PR109176]

The following testcase ICEs on aarch64-linux, because
expand_vector_condition attempts to piecewise lower SVE
  d_3 = a_1(D) < b_2(D);
  _5 = VEC_COND_EXPR <d_3, c_4(D), d_3>;
which isn't possible - nunits_for_known_piecewise_op ICEs but
the rest of the code assumes constant number of elements too.

expand_vector_condition attempts to find if a (rhs1) is a SSA_NAME
for comparison and calls expand_vec_cond_expr_p (type, TREE_TYPE (a1), code)
where a1 is one of the operands of the comparison and code is the comparison
code.  That one indeed isn't supported here, but what aarch64 SVE supports
are the individual statements, comparison (expand_vec_cmp_expr_p) and
expand_vec_cond_expr_p (type, TREE_TYPE (a), SSA_NAME), the latter because
that function starts with
  if (VECTOR_BOOLEAN_TYPE_P (cmp_op_type)
      && get_vcond_mask_icode (TYPE_MODE (value_type),
                               TYPE_MODE (cmp_op_type)) != CODE_FOR_nothing)
    return true;

In an earlier version of the patch (in the PR), we did this
  if (VECTOR_BOOLEAN_TYPE_P (TREE_TYPE (a))
      && expand_vec_cond_expr_p (type, TREE_TYPE (a), ERROR_MARK))
    return true;
before the code == SSA_NAME handling plus some further tweaks later.
While that fixed the ICE, it broke quite a few tests on x86 and some on
aarch64 too.  The problem is that expand_vector_comparison doesn't lower
comparisons which aren't supported and only feed VEC_COND_EXPR first operand
and expand_vector_condition succeeds for those, so with the above mentioned
change we'd verify the VEC_COND_EXPR is implementable using optab alone,
but nothing would verify the tcc_comparison which relied on
expand_vector_condition to verify.

So, the following patch instead queries whether optabs can handle the
comparison and VEC_COND_EXPR together (if a (rhs1) is a comparison;
otherwise as before it checks only the VEC_COND_EXPR) and if that fails,
also checks whether the two operations could be supported individually
and only if even that fails does the piecewise lowering.

2023-03-23  Jakub Jelinek  <jakub@redhat.com>

PR tree-optimization/109176
* tree-vect-generic.cc (expand_vector_condition): If a has
vector boolean type and is a comparison, also check if both
the comparison and VEC_COND_EXPR could be successfully expanded
individually.

* gcc.target/aarch64/sve/pr109176.c: New test.

15 months agoRISC-V: Bugfix for rvv bool mode size adjustment
Pan Li [Wed, 8 Mar 2023 07:33:33 +0000 (15:33 +0800)]
RISC-V: Bugfix for rvv bool mode size adjustment

Fix the bug of the rvv bool mode size by the adjustment.
Besides the mode precision (aka bit size [1, 2, 4, 8, 16, 32, 64])
of the vbool*_t, the mode size (aka byte size) will be adjusted to
[1, 1, 1, 1, 2, 4, 8] according to the rvv spec 1.0 isa. The
adjustment will provide correct information for the underlying
redundant instruction elimiation.

Given the below sample code:
{
  vbool1_t v1 = *(vbool1_t*)in;
  vbool64_t v2 = *(vbool64_t*)in;

  *(vbool1_t*)(out + 100) = v1;
  *(vbool64_t*)(out + 200) = v2;
}

Before the size adjustment:
csrr    t0,vlenb
slli    t1,t0,1
csrr    a3,vlenb
sub     sp,sp,t1
slli    a4,a3,1
add     a4,a4,sp
addi    a2,a1,100
vsetvli a5,zero,e8,m8,ta,ma
sub     a3,a4,a3
vlm.v   v24,0(a0)
vsm.v   v24,0(a2)
vsm.v   v24,0(a3)
addi    a1,a1,200
csrr    t0,vlenb
vsetvli a4,zero,e8,mf8,ta,ma
slli    t1,t0,1
vlm.v   v24,0(a3)
vsm.v   v24,0(a1)
add     sp,sp,t1
jr      ra

After the size adjustment:
addi    a3,a1,100
vsetvli a4,zero,e8,m8,ta,ma
addi    a1,a1,200
vlm.v   v24,0(a0)
vsm.v   v24,0(a3)
vsetvli a5,zero,e8,mf8,ta,ma
vlm.v   v24,0(a0)
vsm.v   v24,0(a1)
ret

Additionally, the size adjust cannot cover all possible combinations
of the vbool*_t code pattern like above. We will take a look into it
in another patches.

PR 108185
PR 108654

gcc/ChangeLog:

PR target/108654
PR target/108185
* config/riscv/riscv-modes.def (ADJUST_BYTESIZE): Adjust size
for vector mask modes.
* config/riscv/riscv.cc (riscv_v_adjust_bytesize): New.
* config/riscv/riscv.h (riscv_v_adjust_bytesize): New.

gcc/testsuite/ChangeLog:

PR target/108654
PR target/108185
* gcc.target/riscv/rvv/base/pr108185-1.c: Update.
* gcc.target/riscv/rvv/base/pr108185-2.c: Ditto.
* gcc.target/riscv/rvv/base/pr108185-3.c: Ditto.

Signed-off-by: Pan Li <pan2.li@intel.com>
Co-authored-by: Ju-Zhe Zhong <juzhe.zhong@rivai.ai>
15 months agoRISC-V: Fix loss of function to script 'multilib-generator'
Songhe Zhu [Tue, 21 Mar 2023 07:38:49 +0000 (15:38 +0800)]
RISC-V: Fix loss of function to script 'multilib-generator'

The arch 'rv32imac' will not be created when excuting
'./multilib-generator rv32imc-ilp32--a'

The output is:
MULTILIB_OPTIONS = march=rv32imc mabi=ilp32
MULTILIB_DIRNAMES = rv32imc ilp32
MULTILIB_REQUIRED = march=rv32imc/mabi=ilp32
MULTILIB_REUSE =

Analysis : The alts:['rv32imc', 'rv32imac'] will change
to ['rv32imac', 'rv32imc'] through function:unique(alts) processing,
This is the wrong alts should not be changed.
This patch fix it.

gcc/ChangLog:
* config/riscv/multilib-generator: Adjusting the loop of 'alt' in 'alts'.

Signed-off-by: Songhe Zhu <zhusonghe@eswincomputing.com>
16 months agoc++: local class in nested generic lambda [PR109241]
Jason Merrill [Wed, 22 Mar 2023 20:11:47 +0000 (16:11 -0400)]
c++: local class in nested generic lambda [PR109241]

In this testcase, the tree walk to look for bare parameter packs was
confused by finding a type with no TREE_BINFO.  But it should be fine that
it's unset; we already checked for unexpanded packs at parse time.

I also tried doing the partial instantiation of the local class, which is
probably the long-term direction we want to go, but for stage 4 let's go
with this safer change.

PR c++/109241

gcc/cp/ChangeLog:

* pt.cc (find_parameter_packs_r): Handle null TREE_BINFO.

gcc/testsuite/ChangeLog:

* g++.dg/cpp1y/lambda-generic-local-class2.C: New test.

16 months agoRISC-V: Fix LRA issue for LMUL < 1 vector spillings [PR109244]
Ju-Zhe Zhong [Wed, 22 Mar 2023 02:49:56 +0000 (10:49 +0800)]
RISC-V: Fix LRA issue for LMUL < 1 vector spillings [PR109244]

In order to decrease the memory traffic, we don't use whole register
load/store for the LMUL less than 1 and mask mode, so those case will
require one extra general purpose register for setting up VL register,
but it's not allowed during LRA process, so we defined few special move patterns
used for LRA, which will defer the expansion after LRA.

gcc/ChangeLog:

PR target/109244
* config/riscv/riscv-protos.h (emit_vlmax_vsetvl): Define as global.
(emit_vlmax_op): Ditto.
* config/riscv/riscv-v.cc (get_sew): New function.
(emit_vlmax_vsetvl): Adapt function.
(emit_pred_op): Ditto.
(emit_vlmax_op): Ditto.
(emit_nonvlmax_op): Ditto.
(legitimize_move): Fix LRA ICE.
(gen_no_side_effects_vsetvl_rtx): Adapt function.
* config/riscv/vector.md (@mov<V_FRACT:mode><P:mode>_lra): New pattern.
(@mov<VB:mode><P:mode>_lra): Ditto.
(*mov<V_FRACT:mode><P:mode>_lra): Ditto.
(*mov<VB:mode><P:mode>_lra): Ditto.

gcc/testsuite/ChangeLog:

PR target/109244
* g++.target/riscv/rvv/base/pr109244.C: New test.
* gcc.target/riscv/rvv/base/binop_vv_constraint-4.c: Adapt testcase.
* gcc.target/riscv/rvv/base/binop_vv_constraint-6.c: Ditto.
* gcc.target/riscv/rvv/base/binop_vx_constraint-127.c: Ditto.
* gcc.target/riscv/rvv/base/spill-1.c: Ditto.
* gcc.target/riscv/rvv/base/spill-2.c: Ditto.
* gcc.target/riscv/rvv/base/spill-3.c: Ditto.
* gcc.target/riscv/rvv/base/spill-5.c: Ditto.
* gcc.target/riscv/rvv/base/spill-7.c: Ditto.
* g++.target/riscv/rvv/base/bug-18.C: New test.
* gcc.target/riscv/rvv/base/merge_constraint-3.c: New test.
* gcc.target/riscv/rvv/base/merge_constraint-4.c: New test.

16 months agoRISC-V: Implement __riscv_vlenb PR109228
Ju-Zhe Zhong [Wed, 22 Mar 2023 05:06:23 +0000 (13:06 +0800)]
RISC-V: Implement __riscv_vlenb PR109228

__riscv_vlenb is defined in RVV intrinsic spec 0.11 and used in some project
like google/highway.

gcc/ChangeLog:

PR target/109228
* config/riscv/riscv-vector-builtins-bases.cc (class vlenb): Add
__riscv_vlenb support.
(BASE): Ditto.
* config/riscv/riscv-vector-builtins-bases.h: Ditto.
* config/riscv/riscv-vector-builtins-functions.def (vlenb): Ditto.
* config/riscv/riscv-vector-builtins-shapes.cc (struct vlenb_def): Ditto.
(SHAPE): Ditto.
* config/riscv/riscv-vector-builtins-shapes.h: Ditto.
* config/riscv/riscv-vector-builtins.cc: Ditto.

gcc/testsuite/ChangeLog:

PR target/109228
* gcc.target/riscv/rvv/base/vlenb-1.c: New test.

16 months agoRISC-V: Fix wrong vsetvli fusion for vmv.s.x
Ju-Zhe Zhong [Thu, 16 Mar 2023 08:55:42 +0000 (16:55 +0800)]
RISC-V: Fix wrong vsetvli fusion for vmv.s.x

gcc/ChangeLog:

* config/riscv/riscv-vsetvl.cc (reg_available_p): Fix bugs.
(pass_vsetvl::compute_local_backward_infos): Fix bugs.
(pass_vsetvl::need_vsetvl): Fix bugs.
(pass_vsetvl::backward_demand_fusion): Fix bugs.
(pass_vsetvl::demand_fusion): Fix bugs.
(eliminate_insn): Fix bugs.
(insert_vsetvl): Ditto.
(pass_vsetvl::emit_local_forward_vsetvls): Ditto.
* config/riscv/riscv-vsetvl.h (enum vsetvl_type): Ditto.
* config/riscv/vector.md: Ditto.

gcc/testsuite/ChangeLog:

* g++.target/riscv/rvv/base/bug-10.C: New test.
* g++.target/riscv/rvv/base/bug-11.C: New test.
* g++.target/riscv/rvv/base/bug-12.C: New test.
* g++.target/riscv/rvv/base/bug-13.C: New test.
* g++.target/riscv/rvv/base/bug-14.C: New test.
* g++.target/riscv/rvv/base/bug-15.C: New test.
* g++.target/riscv/rvv/base/bug-16.C: New test.
* g++.target/riscv/rvv/base/bug-17.C: New test.
* g++.target/riscv/rvv/base/bug-2.C: New test.
* g++.target/riscv/rvv/base/bug-3.C: New test.
* g++.target/riscv/rvv/base/bug-4.C: New test.
* g++.target/riscv/rvv/base/bug-5.C: New test.
* g++.target/riscv/rvv/base/bug-6.C: New test.
* g++.target/riscv/rvv/base/bug-7.C: New test.
* g++.target/riscv/rvv/base/bug-8.C: New test.
* g++.target/riscv/rvv/base/bug-9.C: New test.

Signed-off-by: Ju-Zhe Zhong <juzhe.zhong@rivai.ai>
Co-authored-by: kito-cheng <kito.cheng@sifive.com>
16 months agoRISC-V: Fix wrong RTL pattern for ternary instructions.
Ju-Zhe Zhong [Tue, 14 Mar 2023 02:23:31 +0000 (10:23 +0800)]
RISC-V: Fix wrong RTL pattern for ternary instructions.

We've wrong RTL pattern cause unexpected optimizaion result.

Give a example is vnmsub.vx pattern, the operation of vnmsub.vx
list below:

  vnmsub.vx vd, rs1, vs2, vm    # vd[i] = -(x[rs1] * vd[i]) + vs2[i]

But our RTL pattern write as (x[rs1] * vd[i]) - vs2[i], and the GCC try to
simplify when x[rs1] is constant 1, and then become a vd[i] - vs[i]
instruction.

We also revise all ternary instructions to make sure the RTL has right
semantic:

And it's the mapping list between instruction and RTL pattern:

interger:
vnmsac.vv vd, vs1, vs2, vm    # vd[i] = -(vs1[i] * vs2[i]) + vd[i]  (minus op3 (mult op1 op2))
vnmsac.vx vd, rs1, vs2, vm    # vd[i] = -(x[rs1] * vs2[i]) + vd[i]   (minus op3 (mult op1 op2))

floating-point:
vfmacc.vv vd, vs1, vs2, vm    # vd[i] = +(vs1[i] * vs2[i]) + vd[i] (plus (mult (op1 op2)) op3)
vfmacc.vf vd, rs1, vs2, vm    # vd[i] = +(f[rs1] * vs2[i]) + vd[i] (plus (mult (op1 op2)) op3)

vfnmacc.vv vd, vs1, vs2, vm   # vd[i] = -(vs1[i] * vs2[i]) - vd[i] (minus (neg (mult (op1 op2))) op3))
vfnmacc.vf vd, rs1, vs2, vm   # vd[i] = -(f[rs1] * vs2[i]) - vd[i] (minus (neg (mult (op1 op2)) op3))
vfmsac.vv vd, vs1, vs2, vm    # vd[i] = +(vs1[i] * vs2[i]) - vd[i] (minus (mult (op1 op2)) op3)
vfmsac.vf vd, rs1, vs2, vm    # vd[i] = +(f[rs1] * vs2[i]) - vd[i] (minus (mult (op1 op2)) op3)

vfnmsac.vv vd, vs1, vs2, vm   # vd[i] = -(vs1[i] * vs2[i]) + vd[i] (plus (neg:(mult (op1 op2))) op3)
vfnmsac.vf vd, rs1, vs2, vm   # vd[i] = -(f[rs1] * vs2[i]) + vd[i] (plus (neg:(mult (op1 op2))) op3)

gcc/ChangeLog:

* config/riscv/riscv-vector-builtins-bases.cc: Fix ternary bug.
* config/riscv/vector-iterators.md (nmsac): Ditto.
(nmsub): Ditto.
(msac): Ditto.
(msub): Ditto.
(nmadd): Ditto.
(nmacc): Ditto.
* config/riscv/vector.md (@pred_mul_<optab><mode>): Ditto.
(@pred_mul_plus<mode>): Ditto.
(*pred_madd<mode>): Ditto.
(*pred_macc<mode>): Ditto.
(*pred_mul_plus<mode>): Ditto.
(@pred_mul_plus<mode>_scalar): Ditto.
(*pred_madd<mode>_scalar): Ditto.
(*pred_macc<mode>_scalar): Ditto.
(*pred_mul_plus<mode>_scalar): Ditto.
(*pred_madd<mode>_extended_scalar): Ditto.
(*pred_macc<mode>_extended_scalar): Ditto.
(*pred_mul_plus<mode>_extended_scalar): Ditto.
(@pred_minus_mul<mode>): Ditto.
(*pred_<madd_nmsub><mode>): Ditto.
(*pred_nmsub<mode>): Ditto.
(*pred_<macc_nmsac><mode>): Ditto.
(*pred_nmsac<mode>): Ditto.
(*pred_mul_<optab><mode>): Ditto.
(*pred_minus_mul<mode>): Ditto.
(@pred_mul_<optab><mode>_scalar): Ditto.
(@pred_minus_mul<mode>_scalar): Ditto.
(*pred_<madd_nmsub><mode>_scalar): Ditto.
(*pred_nmsub<mode>_scalar): Ditto.
(*pred_<macc_nmsac><mode>_scalar): Ditto.
(*pred_nmsac<mode>_scalar): Ditto.
(*pred_mul_<optab><mode>_scalar): Ditto.
(*pred_minus_mul<mode>_scalar): Ditto.
(*pred_<madd_nmsub><mode>_extended_scalar): Ditto.
(*pred_nmsub<mode>_extended_scalar): Ditto.
(*pred_<macc_nmsac><mode>_extended_scalar): Ditto.
(*pred_nmsac<mode>_extended_scalar): Ditto.
(*pred_mul_<optab><mode>_extended_scalar): Ditto.
(*pred_minus_mul<mode>_extended_scalar): Ditto.
(*pred_<madd_msub><mode>): Ditto.
(*pred_<macc_msac><mode>): Ditto.
(*pred_<madd_msub><mode>_scalar): Ditto.
(*pred_<macc_msac><mode>_scalar): Ditto.
(@pred_neg_mul_<optab><mode>): Ditto.
(@pred_mul_neg_<optab><mode>): Ditto.
(*pred_<nmadd_msub><mode>): Ditto.
(*pred_<nmsub_nmadd><mode>): Ditto.
(*pred_<nmacc_msac><mode>): Ditto.
(*pred_<nmsac_nmacc><mode>): Ditto.
(*pred_neg_mul_<optab><mode>): Ditto.
(*pred_mul_neg_<optab><mode>): Ditto.
(@pred_neg_mul_<optab><mode>_scalar): Ditto.
(@pred_mul_neg_<optab><mode>_scalar): Ditto.
(*pred_<nmadd_msub><mode>_scalar): Ditto.
(*pred_<nmsub_nmadd><mode>_scalar): Ditto.
(*pred_<nmacc_msac><mode>_scalar): Ditto.
(*pred_<nmsac_nmacc><mode>_scalar): Ditto.
(*pred_neg_mul_<optab><mode>_scalar): Ditto.
(*pred_mul_neg_<optab><mode>_scalar): Ditto.
(@pred_widen_neg_mul_<optab><mode>): Ditto.
(@pred_widen_mul_neg_<optab><mode>): Ditto.
(@pred_widen_neg_mul_<optab><mode>_scalar): Ditto.
(@pred_widen_mul_neg_<optab><mode>_scalar): Ditto.

gcc/testsuite/ChangeLog:

* gcc.target/riscv/rvv/base/bug-3.c: New test.
* gcc.target/riscv/rvv/base/bug-4.c: New test.
* gcc.target/riscv/rvv/base/bug-5.c: New test.

Signed-off-by: Ju-Zhe Zhong <juzhe.zhong@rivai.ai>
Co-authored-by: kito-cheng <kito.cheng@sifive.com>
16 months agoRISC-V: Add riscv_vector target check
Kito Cheng [Wed, 22 Mar 2023 10:47:52 +0000 (18:47 +0800)]
RISC-V: Add riscv_vector target check

Add target check funciton to ensure vector extension can be used.

gcc/testsuite/ChangeLog:

* lib/target-supports.exp (check_effective_target_riscv_vector):
New.

16 months agoRemove TARGET_GEN_MEMSET_SCRATCH_RTX since it's not used anymore.
liuhongt [Tue, 21 Mar 2023 08:47:25 +0000 (16:47 +0800)]
Remove TARGET_GEN_MEMSET_SCRATCH_RTX since it's not used anymore.

The target hook is only used by i386, and the current definition is
same as default gen_reg_rtx.

gcc/ChangeLog:

* builtins.cc (builtin_memset_read_str): Replace
targetm.gen_memset_scratch_rtx with gen_reg_rtx.
(builtin_memset_gen_str): Ditto.
* config/i386/i386-expand.cc
(ix86_convert_const_wide_int_to_broadcast): Replace
ix86_gen_scratch_sse_rtx with gen_reg_rtx.
(ix86_expand_vector_move): Ditto.
* config/i386/i386-protos.h (ix86_gen_scratch_sse_rtx):
Removed.
* config/i386/i386.cc (ix86_gen_scratch_sse_rtx): Removed.
(TARGET_GEN_MEMSET_SCRATCH_RTX): Removed.
* doc/tm.texi: Remove TARGET_GEN_MEMSET_SCRATCH_RTX.
* doc/tm.texi.in: Ditto.
* target.def: Ditto.

16 months agoDaily bump.
GCC Administrator [Thu, 23 Mar 2023 00:17:30 +0000 (00:17 +0000)]
Daily bump.

16 months agolibstdc++: Fix assigning nullptr to std::atomic<shared_ptr<T>> (LWG 3893)
Jonathan Wakely [Wed, 22 Mar 2023 21:54:24 +0000 (21:54 +0000)]
libstdc++: Fix assigning nullptr to std::atomic<shared_ptr<T>> (LWG 3893)

LWG voted this to Tentatively Ready recently.

libstdc++-v3/ChangeLog:

* include/bits/shared_ptr_atomic.h (atomic::operator=(nullptr_t)):
Add overload, as per LWG 3893.
* testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
Check assignment from nullptr.

16 months agotestsuite: always use UTF-8 in scan-sarif-file[-not] [PR105959]
David Malcolm [Wed, 22 Mar 2023 20:48:27 +0000 (16:48 -0400)]
testsuite: always use UTF-8 in scan-sarif-file[-not] [PR105959]

c-c++-common/diagnostic-format-sarif-file-4.c is a test case for
quoting non-ASCII source code in a SARIF diagnostic log.

The SARIF standard mandates that .sarif files are UTF-8 encoded.

PR testsuite/105959 notes that the test case fails when the system
encoding is not UTF-8, such as when the "make" invocation is prefixed
with LC_ALL=C, whereas it works with in a UTF-8-locale.

The root cause is that dg-scan opens the file for reading using the
"system" encoding; I believe it is falling back to treating all files as
effectively ISO 8859-1 in a non-UTF-8 locale.

This patch fixes things by adding a mechanism to dg-scan to allow
callers to (optionally) specify an encoding to use when reading the
file, and updating scan-sarif-file (and the -not variant) to always
use UTF-8 when calling dg-scan, fixing the test case with LC_ALL=C.

gcc/testsuite/ChangeLog:
PR testsuite/105959
* gcc.dg-selftests/dg-final.exp
(dg_final_directive_check_num_args): Update expected maximum
number of args for the various directives using dg-scan.
* lib/scanasm.exp (append_encoding_arg): New procedure.
(dg-scan): Add optional 3rd argument: the encoding to use when
reading from the file.
* lib/scansarif.exp (scan-sarif-file): Treat the file as UTF-8
encoded when reading it.
(scan-sarif-file-not): Likewise.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>
16 months agocompiler: add missing Slice_info_expression::do_traverse
Ian Lance Taylor [Wed, 22 Mar 2023 04:34:03 +0000 (21:34 -0700)]
compiler: add missing Slice_info_expression::do_traverse

Fixes golang/go#59169

Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/478176

16 months agoc++: array bound partial ordering [PR108390]
Jason Merrill [Wed, 22 Mar 2023 15:12:57 +0000 (11:12 -0400)]
c++: array bound partial ordering [PR108390]

fold_convert doesn't work with a dependent argument, and problematically
differed from the corresponding fold+build_nop further down in the
function.  So change it to match.

PR c++/108390

gcc/cp/ChangeLog:

* pt.cc (unify): Use fold of build_nop instead of fold_convert.

gcc/testsuite/ChangeLog:

* g++.dg/template/partial-order3.C: New test.

16 months agoFortran: improve checking of FINAL subroutine arguments [PR104572]
Harald Anlauf [Wed, 22 Mar 2023 18:20:41 +0000 (19:20 +0100)]
Fortran: improve checking of FINAL subroutine arguments [PR104572]

gcc/fortran/ChangeLog:

PR fortran/104572
* resolve.cc (gfc_resolve_finalizers): Argument of a FINAL subroutine
cannot be an alternate return.

gcc/testsuite/ChangeLog:

PR fortran/104572
* gfortran.dg/pr104572.f90: New test.

Co-authored-by: Steven G. Kargl <kargl@gcc.gnu.org>
16 months agolibstdc++: Remove std::formatter<const charT[N], charT> specialization
Jonathan Wakely [Wed, 22 Mar 2023 13:01:07 +0000 (13:01 +0000)]
libstdc++: Remove std::formatter<const charT[N], charT> specialization

This was approved in Issaquah as LWG 3833.

libstdc++-v3/ChangeLog:

* include/std/format (formatter<const charT[N], charT>): Do not
define partial speclialization, as per LWG 3833.
* testsuite/std/format/formatter/requirements.cc: Check it.

16 months agolibstdc++: Define __cpp_lib_constexpr_algorithms in <utility> (LWG 3792)
Jonathan Wakely [Wed, 22 Mar 2023 12:55:29 +0000 (12:55 +0000)]
libstdc++: Define __cpp_lib_constexpr_algorithms in <utility> (LWG 3792)

We actually defined this macro in <utility> at one point, but I removed
it in r10-7901-g2025db692e9ed1.

libstdc++-v3/ChangeLog:

* include/std/utility (__cpp_lib_constexpr_algorithms): Define,
as per LWG 3792.
* testsuite/20_util/exchange/constexpr.cc: Check for it.

16 months agolibstdc++: Add missing __cpp_lib_format macro to <version>
Jonathan Wakely [Wed, 22 Mar 2023 12:37:17 +0000 (12:37 +0000)]
libstdc++: Add missing __cpp_lib_format macro to <version>

libstdc++-v3/ChangeLog:

* include/std/version (__cpp_lib_format): Define.
* testsuite/std/format/functions/format.cc: Check it.

16 months agolibstdc++: Use rvalues in std::string::resize_and_overwrite (LWG 3645)
Jonathan Wakely [Wed, 22 Mar 2023 11:54:31 +0000 (11:54 +0000)]
libstdc++: Use rvalues in std::string::resize_and_overwrite (LWG 3645)

Previously the C++23 draft required that the callback arguments were
lvalues, which was overvable by the callback. LWG 3645 removes that
overspecification, so we can pass rvalues and the user can't modify
our local variables. I've used auto(p) to produce rvalues, which is only
supported since Clang 15, but I think that's OK for a C++23 feature.

While making this change I noticed that we weren't correctly enforcing
the requirement that the callback returns an integer-like type. Add
better assertions for the type and value.

libstdc++-v3/ChangeLog:

* include/bits/basic_string.tcc (basic_string::resize_and_overwrite):
Pass rvalues to the callback, as now allowed by LWG 3645.
Enforce preconditions on the return value.
* testsuite/21_strings/basic_string/capacity/char/resize_and_overwrite.cc:
Adjust.

16 months agolibstdc++: Add comment to <format> (LWG 3720)
Jonathan Wakely [Wed, 22 Mar 2023 11:42:11 +0000 (11:42 +0000)]
libstdc++: Add comment to <format> (LWG 3720)

libstdc++-v3/ChangeLog:

* include/std/format: Add a comment noting that the resolution
of LWG 3720 has been applied..

16 months agolibstdc++: Add allocator-extended constructors to std::match_results (LWG 2195)
Jonathan Wakely [Wed, 22 Mar 2023 11:36:06 +0000 (11:36 +0000)]
libstdc++: Add allocator-extended constructors to std::match_results (LWG 2195)

This was approved in Issaquah last month.

libstdc++-v3/ChangeLog:

* include/bits/regex.h (match_results): Add allocator-extended
copy and move constructors, as per LWG 2195.
* testsuite/28_regex/match_results/ctors/char/alloc.cc: New test.

16 months agolibstdc++: Make std::istream_iterator copy ctor constexpr (LWG 3600)
Jonathan Wakely [Wed, 22 Mar 2023 11:10:38 +0000 (11:10 +0000)]
libstdc++: Make std::istream_iterator copy ctor constexpr (LWG 3600)

As explained in LWG 3600, we never implemented a C++0x change that made
the copy constructor of std::istream_iterator defined as defaulted. That
would be an ABI break, so the resolution of LWG 3600 is to not require
it to be trivial, but just constexpr and conditionally noexcept. This
applies that resolution.

libstdc++-v3/ChangeLog:

* include/bits/stream_iterator.h (istream_iterator): Add
constexpr to copy constructor, as per LWG 3600.
* testsuite/24_iterators/istream_iterator/cons/constexpr.cc:
Check copy construction.

16 months agoLRA: Do not repeat inheritance and live range splitting in case of asm error
Vladimir N. Makarov [Wed, 22 Mar 2023 16:33:11 +0000 (12:33 -0400)]
LRA: Do not repeat inheritance and live range splitting in case of asm error

LRA was trying to do live range splitting again and again as there were
no enough regs for asm.  This patch solves the problem.

        PR target/109137

gcc/ChangeLog:

* lra.cc (lra): Do not repeat inheritance and live range splitting
when asm error is found.

gcc/testsuite/ChangeLog:

* gcc.target/i386/pr109137.c: New.

16 months agomodula2: Add cwd to include path. Include m2cor before m2pim.
Gaius Mulley [Wed, 22 Mar 2023 16:39:12 +0000 (16:39 +0000)]
modula2: Add cwd to include path.  Include m2cor before m2pim.

The driver should default to include the current working directory in the
module search path.  This patch adds . to the search path provided
-fm2-pathname has not been specified.  The patch also reorders the pim
libraries so that the m2cor directory is searched before m2pim.
Coroutine support is visible by default for both -fpim and -fiso
(from their respective SYSTEM modules).

gcc/m2/ChangeLog:

PR modula2/109248
* Make-lang.in (m2/pge-boot/%.o): Add CFLAGS and CXXFLAGS for C
and C++ compiles.
* gm2spec.cc (add_m2_I_path): Indentation.
(lang_specific_driver): New variable seen_pathname.
Detect -fm2-pathname.  If not seen then push_back_Ipath (".").
Change non iso library path to "m2cor,m2log,m2pim,m2iso".

Signed-off-by: Gaius Mulley <gaiusmod2@gmail.com>
16 months agoc++: attribute on dtor in template [PR108795]
Jason Merrill [Tue, 21 Mar 2023 19:15:27 +0000 (15:15 -0400)]
c++: attribute on dtor in template [PR108795]

Since r7-2549 we were throwing away the explicit C:: when we found that ~C
has an attribute that we treat as making its type dependent.

PR c++/108795

gcc/cp/ChangeLog:

* semantics.cc (finish_id_expression_1): Check scope before
returning id_expression.

gcc/testsuite/ChangeLog:

* g++.dg/ext/attr-tsafe1.C: New test.