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* [Bug tree-optimization/107523] New: wrong code at -O2 and -O3 on x86_64-linux-gnu
@ 2022-11-04 7:25 zhendong.su at inf dot ethz.ch
2022-11-04 19:45 ` [Bug tree-optimization/107523] [13 Regression] " pinskia at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: zhendong.su at inf dot ethz.ch @ 2022-11-04 7:25 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107523
Bug ID: 107523
Summary: wrong code at -O2 and -O3 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 appears to be a recent regression as 12.2 compiles the test correctly.
Compiler Explorer: https://godbolt.org/z/1erPMzzjK
[522] % 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 20221104 (experimental) [master r13-3645-gfabe470b244] (GCC)
[523] %
[523] % gcctk -Os small.c; ./a.out
[524] %
[524] % gcctk -O2 small.c
[525] % ./a.out
Floating point exception
[526] %
[526] % cat small.c
int a, b = 1;
unsigned int c = 1;
int main() {
int d = 1, f;
if (b)
d = 0;
a = -1;
b = ~d ^ 465984011;
L1:;
if (b < 2)
f = b;
b = f;
if (f <= a) {
int g = -(a && 1), h = g - f && a, i = ~(c / f) && 1 % (a | h);
if (c) {
g = f;
if (i || (g && (g > -465984012)))
goto L2;
}
c = g | f / c;
}
if (0)
L2:
a = 0;
if (a <= c)
goto L1;
return 0;
}
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/107523] [13 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
2022-11-04 7:25 [Bug tree-optimization/107523] New: wrong code at -O2 and -O3 on x86_64-linux-gnu zhendong.su at inf dot ethz.ch
@ 2022-11-04 19:45 ` pinskia at gcc dot gnu.org
2022-11-10 15:39 ` [Bug tree-optimization/107523] [13 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu since r13-3628-g6fd485d15c1a2c42 marxin at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-11-04 19:45 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107523
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |needs-bisection
Summary|wrong code at -O2 and -O3 |[13 Regression] wrong code
|on x86_64-linux-gnu |at -O2 and -O3 on
| |x86_64-linux-gnu
Target Milestone|--- |13.0
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/107523] [13 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu since r13-3628-g6fd485d15c1a2c42
2022-11-04 7:25 [Bug tree-optimization/107523] New: wrong code at -O2 and -O3 on x86_64-linux-gnu zhendong.su at inf dot ethz.ch
2022-11-04 19:45 ` [Bug tree-optimization/107523] [13 Regression] " pinskia at gcc dot gnu.org
@ 2022-11-10 15:39 ` marxin at gcc dot gnu.org
2022-11-11 19:48 ` cvs-commit at gcc dot gnu.org
2022-11-11 19:54 ` amacleod at redhat dot com
3 siblings, 0 replies; 5+ messages in thread
From: marxin at gcc dot gnu.org @ 2022-11-10 15:39 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107523
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[13 Regression] wrong code |[13 Regression] wrong code
|at -O2 and -O3 on |at -O2 and -O3 on
|x86_64-linux-gnu |x86_64-linux-gnu since
| |r13-3628-g6fd485d15c1a2c42
Last reconfirmed| |2022-11-10
CC| |amacleod at redhat dot com,
| |marxin at gcc dot gnu.org
Keywords|needs-bisection |
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Started with r13-3628-g6fd485d15c1a2c42.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/107523] [13 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu since r13-3628-g6fd485d15c1a2c42
2022-11-04 7:25 [Bug tree-optimization/107523] New: wrong code at -O2 and -O3 on x86_64-linux-gnu zhendong.su at inf dot ethz.ch
2022-11-04 19:45 ` [Bug tree-optimization/107523] [13 Regression] " pinskia at gcc dot gnu.org
2022-11-10 15:39 ` [Bug tree-optimization/107523] [13 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu since r13-3628-g6fd485d15c1a2c42 marxin at gcc dot gnu.org
@ 2022-11-11 19:48 ` cvs-commit at gcc dot gnu.org
2022-11-11 19:54 ` amacleod at redhat dot com
3 siblings, 0 replies; 5+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-11-11 19:48 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107523
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Andrew Macleod <amacleod@gcc.gnu.org>:
https://gcc.gnu.org/g:0a7b437ca71e2721e9bcf070762fc54ef7991aeb
commit r13-3911-g0a7b437ca71e2721e9bcf070762fc54ef7991aeb
Author: Andrew MacLeod <amacleod@redhat.com>
Date: Fri Nov 11 12:22:33 2022 -0500
Don't add dependencies in update_stmt.
gimple_ranger::update_stmt has no idea what the context of an update
is, and should not be adding relations when it re-evaluates a stmt.
PR tree-optimization/107523
gcc/
* gimple-range.cc (gimple_ranger::update_stmt): Use fur_stmt
rather than fur_depend.
gcc/testsuite/
* gcc.dg/pr107523.c: New.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/107523] [13 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu since r13-3628-g6fd485d15c1a2c42
2022-11-04 7:25 [Bug tree-optimization/107523] New: wrong code at -O2 and -O3 on x86_64-linux-gnu zhendong.su at inf dot ethz.ch
` (2 preceding siblings ...)
2022-11-11 19:48 ` cvs-commit at gcc dot gnu.org
@ 2022-11-11 19:54 ` amacleod at redhat dot com
3 siblings, 0 replies; 5+ messages in thread
From: amacleod at redhat dot com @ 2022-11-11 19:54 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107523
Andrew Macleod <amacleod at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Andrew Macleod <amacleod at redhat dot com> ---
fixed.
^ permalink raw reply [flat|nested] 5+ messages in thread
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2022-11-04 7:25 [Bug tree-optimization/107523] New: wrong code at -O2 and -O3 on x86_64-linux-gnu zhendong.su at inf dot ethz.ch
2022-11-04 19:45 ` [Bug tree-optimization/107523] [13 Regression] " pinskia at gcc dot gnu.org
2022-11-10 15:39 ` [Bug tree-optimization/107523] [13 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu since r13-3628-g6fd485d15c1a2c42 marxin at gcc dot gnu.org
2022-11-11 19:48 ` cvs-commit at gcc dot gnu.org
2022-11-11 19:54 ` amacleod at redhat dot com
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