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* [Bug tree-optimization/99943] New: wrong code at -Os
@ 2021-04-06 18:51 zhendong.su at inf dot ethz.ch
2021-04-06 19:24 ` [Bug tree-optimization/99943] [11 Regression] " jakub at gcc dot gnu.org
2021-04-07 7:19 ` rguenth at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: zhendong.su at inf dot ethz.ch @ 2021-04-06 18:51 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99943
Bug ID: 99943
Summary: wrong code at -Os
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: ---
[538] % 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/11.0.1/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 11.0.1 20210406 (experimental) [master revision
62321ab477e:8aa4f7b4faf:d48f87d5c1927b1bf2009af3251fe8757e823713] (GCC)
[539] %
[539] % gcctk -O1 small.c; ./a.out
[540] %
[540] % gcctk -Os small.c
[541] % ./a.out
Aborted
[542] %
[542] % cat small.c
char a;
int b, c[8];
int main() {
for (; a < 8; a++) {
for (b = 0; b < 8; b++)
c[a] = 1;
c[a] = 0;
}
if (c[0] != 0)
__builtin_abort ();
return 0;
}
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug tree-optimization/99943] [11 Regression] wrong code at -Os
2021-04-06 18:51 [Bug tree-optimization/99943] New: wrong code at -Os zhendong.su at inf dot ethz.ch
@ 2021-04-06 19:24 ` jakub at gcc dot gnu.org
2021-04-07 7:19 ` rguenth at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: jakub at gcc dot gnu.org @ 2021-04-06 19:24 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99943
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2021-04-06
Summary|wrong code at -Os |[11 Regression] wrong code
| |at -Os
Ever confirmed|0 |1
Target Milestone|--- |11.0
Status|UNCONFIRMED |NEW
Version|unknown |11.0
Priority|P3 |P1
CC| |jakub at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r11-3300-g83e037364e0d6dd74d595751e8bc8c461b4cb8fa
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug tree-optimization/99943] [11 Regression] wrong code at -Os
2021-04-06 18:51 [Bug tree-optimization/99943] New: wrong code at -Os zhendong.su at inf dot ethz.ch
2021-04-06 19:24 ` [Bug tree-optimization/99943] [11 Regression] " jakub at gcc dot gnu.org
@ 2021-04-07 7:19 ` rguenth at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: rguenth at gcc dot gnu.org @ 2021-04-07 7:19 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99943
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Duplicate.
*** This bug has been marked as a duplicate of bug 98736 ***
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2021-04-07 7:19 UTC | newest]
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2021-04-06 18:51 [Bug tree-optimization/99943] New: wrong code at -Os zhendong.su at inf dot ethz.ch
2021-04-06 19:24 ` [Bug tree-optimization/99943] [11 Regression] " jakub at gcc dot gnu.org
2021-04-07 7:19 ` rguenth at gcc dot gnu.org
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