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* [Bug tree-optimization/107194] New: wrong code at -O1 on x86_64-linux-gnu
@ 2022-10-09 12:54 zhendong.su at inf dot ethz.ch
2022-10-10 7:23 ` [Bug tree-optimization/107194] [13 Regression] " rguenth at gcc dot gnu.org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: zhendong.su at inf dot ethz.ch @ 2022-10-09 12:54 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107194
Bug ID: 107194
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: ---
This works for 12.2, so should be a recent regression.
Compiler Explorer: https://godbolt.org/z/7vobTxhG4
[581] % 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/13.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --disable-bootstrap
--enable-checking=yes --prefix=/local/suz-local/software/local/gcc-trunk
--enable-sanitizers --enable-languages=c,c++ --disable-werror --enable-multilib
--with-system-zlib
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 13.0.0 20221009 (experimental) [master r13-3180-ge95e91eccd0] (GCC)
[582] %
[582] % gcctk -O1 small.c
[583] % ./a.out
Aborted
[584] % cat small.c
int a, b;
int main() {
int c = 0;
long d;
for (; b < 1; b++) {
(c && d) & 3 || a;
d = c;
c = -1;
if (d)
__builtin_abort();
}
return 0;
}
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/107194] [13 Regression] wrong code at -O1 on x86_64-linux-gnu
2022-10-09 12:54 [Bug tree-optimization/107194] New: wrong code at -O1 on x86_64-linux-gnu zhendong.su at inf dot ethz.ch
@ 2022-10-10 7:23 ` rguenth at gcc dot gnu.org
2022-10-10 13:20 ` [Bug tree-optimization/107194] [13 Regression] wrong code at -O1 on x86_64-linux-gnu since r13-3090-gdf4c584c567263fd marxin at gcc dot gnu.org
2022-10-10 18:49 ` aldyh at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-10-10 7:23 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107194
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Keywords| |needs-bisection, wrong-code
Last reconfirmed| |2022-10-10
Summary|wrong code at -O1 on |[13 Regression] wrong code
|x86_64-linux-gnu |at -O1 on x86_64-linux-gnu
Ever confirmed|0 |1
Known to work| |12.2.0
Version|unknown |13.0
Target Milestone|--- |13.0
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/107194] [13 Regression] wrong code at -O1 on x86_64-linux-gnu since r13-3090-gdf4c584c567263fd
2022-10-09 12:54 [Bug tree-optimization/107194] New: wrong code at -O1 on x86_64-linux-gnu zhendong.su at inf dot ethz.ch
2022-10-10 7:23 ` [Bug tree-optimization/107194] [13 Regression] " rguenth at gcc dot gnu.org
@ 2022-10-10 13:20 ` marxin at gcc dot gnu.org
2022-10-10 18:49 ` aldyh at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: marxin at gcc dot gnu.org @ 2022-10-10 13:20 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107194
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |aldyh at gcc dot gnu.org,
| |marxin at gcc dot gnu.org
Summary|[13 Regression] wrong code |[13 Regression] wrong code
|at -O1 on x86_64-linux-gnu |at -O1 on x86_64-linux-gnu
| |since
| |r13-3090-gdf4c584c567263fd
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Started with r13-3090-gdf4c584c567263fd.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/107194] [13 Regression] wrong code at -O1 on x86_64-linux-gnu since r13-3090-gdf4c584c567263fd
2022-10-09 12:54 [Bug tree-optimization/107194] New: wrong code at -O1 on x86_64-linux-gnu zhendong.su at inf dot ethz.ch
2022-10-10 7:23 ` [Bug tree-optimization/107194] [13 Regression] " rguenth at gcc dot gnu.org
2022-10-10 13:20 ` [Bug tree-optimization/107194] [13 Regression] wrong code at -O1 on x86_64-linux-gnu since r13-3090-gdf4c584c567263fd marxin at gcc dot gnu.org
@ 2022-10-10 18:49 ` aldyh at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: aldyh at gcc dot gnu.org @ 2022-10-10 18:49 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107194
Aldy Hernandez <aldyh at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |DUPLICATE
Status|NEW |RESOLVED
--- Comment #3 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
This is the same issue as 107195. I have added this testcase to my upcoming
patch.
*** This bug has been marked as a duplicate of bug 107195 ***
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2022-10-10 18:49 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2022-10-09 12:54 [Bug tree-optimization/107194] New: wrong code at -O1 on x86_64-linux-gnu zhendong.su at inf dot ethz.ch
2022-10-10 7:23 ` [Bug tree-optimization/107194] [13 Regression] " rguenth at gcc dot gnu.org
2022-10-10 13:20 ` [Bug tree-optimization/107194] [13 Regression] wrong code at -O1 on x86_64-linux-gnu since r13-3090-gdf4c584c567263fd marxin at gcc dot gnu.org
2022-10-10 18:49 ` aldyh at gcc dot gnu.org
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