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* [Bug tree-optimization/102636] New: wrong code at -O1 on x86_64-linux-gnu
@ 2021-10-07 9:17 zhendong.su at inf dot ethz.ch
2021-10-07 9:47 ` [Bug tree-optimization/102636] [12 Regression] wrong code at -O1 on x86_64-linux-gnu since r12-3136 jakub at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: zhendong.su at inf dot ethz.ch @ 2021-10-07 9:17 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102636
Bug ID: 102636
Summary: wrong code at -O1 on x86_64-linux-gnu
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zhendong.su at inf dot ethz.ch
Target Milestone: ---
[591] % gcctk -v
Using built-in specs.
COLLECT_GCC=gcctk
COLLECT_LTO_WRAPPER=/local/suz-local/software/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/12.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --disable-bootstrap
--prefix=/local/suz-local/software/local/gcc-trunk --enable-languages=c,c++
--disable-werror --enable-multilib --with-system-zlib
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 12.0.0 20211007 (experimental) [master r12-4219-g6496ae5c965] (GCC)
[592] %
[592] % gcctk -O0 small.c; ./a.out
[593] % gcctk -Os small.c; ./a.out
[594] % gcctk -O2 small.c; ./a.out
[595] % gcctk -O3 small.c; ./a.out
[596] %
[596] % gcctk -O1 small.c; ./a.out
Aborted
[597] %
[597] % cat small.c
unsigned a;
int main() {
unsigned b = 1;
for (; b < 4; b++) {
a = (a ^ 2000000000) * -b;
if (b > a) {
__builtin_abort ();
}
a = 3000000000;
}
return 0;
}
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/102636] [12 Regression] wrong code at -O1 on x86_64-linux-gnu since r12-3136
2021-10-07 9:17 [Bug tree-optimization/102636] New: wrong code at -O1 on x86_64-linux-gnu zhendong.su at inf dot ethz.ch
@ 2021-10-07 9:47 ` jakub at gcc dot gnu.org
2021-10-07 10:20 ` pinskia at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2021-10-07 9:47 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102636
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |guojiufu at gcc dot gnu.org,
| |jakub at gcc dot gnu.org
Target Milestone|--- |12.0
Version|unknown |12.0
Ever confirmed|0 |1
Priority|P3 |P1
Last reconfirmed| |2021-10-07
Status|UNCONFIRMED |NEW
Summary|wrong code at -O1 on |[12 Regression] wrong code
|x86_64-linux-gnu |at -O1 on x86_64-linux-gnu
| |since r12-3136
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r12-3136-g3673dcf6d6baeb67bb70ff03d4cb3f92beed0075
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/102636] [12 Regression] wrong code at -O1 on x86_64-linux-gnu since r12-3136
2021-10-07 9:17 [Bug tree-optimization/102636] New: wrong code at -O1 on x86_64-linux-gnu zhendong.su at inf dot ethz.ch
2021-10-07 9:47 ` [Bug tree-optimization/102636] [12 Regression] wrong code at -O1 on x86_64-linux-gnu since r12-3136 jakub at gcc dot gnu.org
@ 2021-10-07 10:20 ` pinskia at gcc dot gnu.org
2022-01-24 10:43 ` rguenth at gcc dot gnu.org
2022-01-24 12:48 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-10-07 10:20 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102636
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Depends on| |102131
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I almost want to say this is a dup of bug 102131.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102131
[Bug 102131] [12 Regression] wrong code at -O1 and above on x86_64-linux-gnu
since r12-3136
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/102636] [12 Regression] wrong code at -O1 on x86_64-linux-gnu since r12-3136
2021-10-07 9:17 [Bug tree-optimization/102636] New: wrong code at -O1 on x86_64-linux-gnu zhendong.su at inf dot ethz.ch
2021-10-07 9:47 ` [Bug tree-optimization/102636] [12 Regression] wrong code at -O1 on x86_64-linux-gnu since r12-3136 jakub at gcc dot gnu.org
2021-10-07 10:20 ` pinskia at gcc dot gnu.org
@ 2022-01-24 10:43 ` rguenth at gcc dot gnu.org
2022-01-24 12:48 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-01-24 10:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102636
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
dup
*** This bug has been marked as a duplicate of bug 102131 ***
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/102636] [12 Regression] wrong code at -O1 on x86_64-linux-gnu since r12-3136
2021-10-07 9:17 [Bug tree-optimization/102636] New: wrong code at -O1 on x86_64-linux-gnu zhendong.su at inf dot ethz.ch
` (2 preceding siblings ...)
2022-01-24 10:43 ` rguenth at gcc dot gnu.org
@ 2022-01-24 12:48 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-01-24 12:48 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102636
Bug 102636 depends on bug 102131, which changed state.
Bug 102131 Summary: [12 Regression] wrong code at -O1 and above on x86_64-linux-gnu since r12-3136
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102131
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2022-01-24 12:48 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2021-10-07 9:17 [Bug tree-optimization/102636] New: wrong code at -O1 on x86_64-linux-gnu zhendong.su at inf dot ethz.ch
2021-10-07 9:47 ` [Bug tree-optimization/102636] [12 Regression] wrong code at -O1 on x86_64-linux-gnu since r12-3136 jakub at gcc dot gnu.org
2021-10-07 10:20 ` pinskia at gcc dot gnu.org
2022-01-24 10:43 ` rguenth at gcc dot gnu.org
2022-01-24 12:48 ` rguenth at gcc dot gnu.org
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