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* [Bug tree-optimization/102141] New: [12 Regression] ICE: verify_ssa failed during GIMPLE pass: bswap at -O2
@ 2021-08-31 6:57 zsojka at seznam dot cz
2021-08-31 7:04 ` [Bug tree-optimization/102141] " pinskia at gcc dot gnu.org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: zsojka at seznam dot cz @ 2021-08-31 6:57 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102141
Bug ID: 102141
Summary: [12 Regression] ICE: verify_ssa failed during GIMPLE
pass: bswap at -O2
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Created attachment 51386
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51386&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O2 testcase.c
testcase.c: In function 'foo':
testcase.c:4:1: error: definition in block 2 follows the use
4 | foo (unsigned long x)
| ^~~
for SSA_NAME: bswapdst_14 in statement:
_15 = (unsigned int) bswapdst_14;
during GIMPLE pass: bswap
testcase.c:4:1: internal compiler error: verify_ssa failed
0x14f5bb1 verify_ssa(bool, bool)
/repo/gcc-trunk/gcc/tree-ssa.c:1214
0x11b7d85 execute_function_todo
/repo/gcc-trunk/gcc/passes.c:2049
0x11b8af3 do_per_function
/repo/gcc-trunk/gcc/passes.c:1687
0x11b8af3 execute_todo
/repo/gcc-trunk/gcc/passes.c:2096
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r12-3244-20210831062827-gaba800615e1-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/12.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--disable-bootstrap --with-cloog --with-ppl --with-isl
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=x86_64-pc-linux-gnu --with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r12-3244-20210831062827-gaba800615e1-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 12.0.0 20210831 (experimental) (GCC)
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/102141] [12 Regression] ICE: verify_ssa failed during GIMPLE pass: bswap at -O2
2021-08-31 6:57 [Bug tree-optimization/102141] New: [12 Regression] ICE: verify_ssa failed during GIMPLE pass: bswap at -O2 zsojka at seznam dot cz
@ 2021-08-31 7:04 ` pinskia at gcc dot gnu.org
2021-08-31 7:06 ` [Bug tree-optimization/102141] [12 Regression] ICE: verify_ssa failed during GIMPLE pass: bswap at -O2 since r12-3072-gb320edc0c29c838b marxin at gcc dot gnu.org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-08-31 7:04 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102141
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2021-08-31
Target Milestone|--- |12.0
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed, most likely caused by r12-3072.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/102141] [12 Regression] ICE: verify_ssa failed during GIMPLE pass: bswap at -O2 since r12-3072-gb320edc0c29c838b
2021-08-31 6:57 [Bug tree-optimization/102141] New: [12 Regression] ICE: verify_ssa failed during GIMPLE pass: bswap at -O2 zsojka at seznam dot cz
2021-08-31 7:04 ` [Bug tree-optimization/102141] " pinskia at gcc dot gnu.org
@ 2021-08-31 7:06 ` marxin at gcc dot gnu.org
2021-08-31 7:19 ` [Bug tree-optimization/102141] [12 Regression] ICE: with single element vector and the bswap pass " pinskia at gcc dot gnu.org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: marxin at gcc dot gnu.org @ 2021-08-31 7:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102141
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work|11.2.0 |
Summary|[12 Regression] ICE: |[12 Regression] ICE:
|verify_ssa failed during |verify_ssa failed during
|GIMPLE pass: bswap at -O2 |GIMPLE pass: bswap at -O2
| |since
| |r12-3072-gb320edc0c29c838b
Priority|P3 |P1
CC| |jakub at gcc dot gnu.org,
| |marxin at gcc dot gnu.org
Last reconfirmed|2021-08-31 00:00:00 |
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Thanks for the report, started with r12-3072-gb320edc0c29c838b.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/102141] [12 Regression] ICE: with single element vector and the bswap pass at -O2 since r12-3072-gb320edc0c29c838b
2021-08-31 6:57 [Bug tree-optimization/102141] New: [12 Regression] ICE: verify_ssa failed during GIMPLE pass: bswap at -O2 zsojka at seznam dot cz
2021-08-31 7:04 ` [Bug tree-optimization/102141] " pinskia at gcc dot gnu.org
2021-08-31 7:06 ` [Bug tree-optimization/102141] [12 Regression] ICE: verify_ssa failed during GIMPLE pass: bswap at -O2 since r12-3072-gb320edc0c29c838b marxin at gcc dot gnu.org
@ 2021-08-31 7:19 ` pinskia at gcc dot gnu.org
2021-08-31 10:42 ` jakub at gcc dot gnu.org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-08-31 7:19 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102141
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=101540
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I cannot get this to reproduce any other way than with a constructor of a
single element vector.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/102141] [12 Regression] ICE: with single element vector and the bswap pass at -O2 since r12-3072-gb320edc0c29c838b
2021-08-31 6:57 [Bug tree-optimization/102141] New: [12 Regression] ICE: verify_ssa failed during GIMPLE pass: bswap at -O2 zsojka at seznam dot cz
` (2 preceding siblings ...)
2021-08-31 7:19 ` [Bug tree-optimization/102141] [12 Regression] ICE: with single element vector and the bswap pass " pinskia at gcc dot gnu.org
@ 2021-08-31 10:42 ` jakub at gcc dot gnu.org
2021-09-01 10:07 ` cvs-commit at gcc dot gnu.org
2021-09-01 10:08 ` jakub at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: jakub at gcc dot gnu.org @ 2021-08-31 10:42 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102141
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Status|NEW |ASSIGNED
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 51387
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51387&action=edit
gcc12-pr102141.patch
Untested fix.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/102141] [12 Regression] ICE: with single element vector and the bswap pass at -O2 since r12-3072-gb320edc0c29c838b
2021-08-31 6:57 [Bug tree-optimization/102141] New: [12 Regression] ICE: verify_ssa failed during GIMPLE pass: bswap at -O2 zsojka at seznam dot cz
` (3 preceding siblings ...)
2021-08-31 10:42 ` jakub at gcc dot gnu.org
@ 2021-09-01 10:07 ` cvs-commit at gcc dot gnu.org
2021-09-01 10:08 ` jakub at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-09-01 10:07 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102141
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:
https://gcc.gnu.org/g:45ff12512e568089a4c7b85b5322ab8019723cd9
commit r12-3280-g45ff12512e568089a4c7b85b5322ab8019723cd9
Author: Jakub Jelinek <jakub@redhat.com>
Date: Wed Sep 1 12:06:25 2021 +0200
bswap: Fix up bswap_view_convert handling [PR102141]
bswap_view_convert is used twice in spots where gsi_insert_before is the
right thing, but in the last one it wants to insert preparation stmts
for the VIEW_CONVERT_EXPR emitted with gsi_insert_after, where at the
gsi we still need to insert bswap_stmt and maybe mask_stmt whose lhs
the preparation stmts will use.
So, this patch adds a BEFORE argument to the function and emits the
preparation statements before or after depending on that.
2021-09-01 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/102141
* gimple-ssa-store-merging.c (bswap_view_convert): Add BEFORE
argument. If false, emit stmts after gsi instead of before, and
with GSI_NEW_STMT.
(bswap_replace): Adjust callers. When converting output of bswap,
emit VIEW_CONVERT prepratation stmts after a copy of gsi instead
of before it.
* gcc.dg/pr102141.c: New test.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/102141] [12 Regression] ICE: with single element vector and the bswap pass at -O2 since r12-3072-gb320edc0c29c838b
2021-08-31 6:57 [Bug tree-optimization/102141] New: [12 Regression] ICE: verify_ssa failed during GIMPLE pass: bswap at -O2 zsojka at seznam dot cz
` (4 preceding siblings ...)
2021-09-01 10:07 ` cvs-commit at gcc dot gnu.org
@ 2021-09-01 10:08 ` jakub at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: jakub at gcc dot gnu.org @ 2021-09-01 10:08 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102141
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 7+ messages in thread
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2021-08-31 6:57 [Bug tree-optimization/102141] New: [12 Regression] ICE: verify_ssa failed during GIMPLE pass: bswap at -O2 zsojka at seznam dot cz
2021-08-31 7:04 ` [Bug tree-optimization/102141] " pinskia at gcc dot gnu.org
2021-08-31 7:06 ` [Bug tree-optimization/102141] [12 Regression] ICE: verify_ssa failed during GIMPLE pass: bswap at -O2 since r12-3072-gb320edc0c29c838b marxin at gcc dot gnu.org
2021-08-31 7:19 ` [Bug tree-optimization/102141] [12 Regression] ICE: with single element vector and the bswap pass " pinskia at gcc dot gnu.org
2021-08-31 10:42 ` jakub at gcc dot gnu.org
2021-09-01 10:07 ` cvs-commit at gcc dot gnu.org
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