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* [Bug tree-optimization/97838] New: ICE at -O3 on x86_64-pc-linux-gnu: Segmentation fault
@ 2020-11-15 13:52 zhendong.su at inf dot ethz.ch
2020-11-15 15:09 ` [Bug tree-optimization/97838] [11 Regression] ICE at -O3 on x86_64-pc-linux-gnu: Segmentation fault by r11-4428 hjl.tools at gmail dot com
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: zhendong.su at inf dot ethz.ch @ 2020-11-15 13:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97838
Bug ID: 97838
Summary: ICE at -O3 on x86_64-pc-linux-gnu: Segmentation fault
Product: gcc
Version: 11.0
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: ---
[530] % 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/11.0.0/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 11.0.0 20201115 (experimental) [master revision
406b452dc0e:d88ff5a679d:faab61b585a8b4a42454f085dd6b7815992a98f5] (GCC)
[531] %
[531] % gcctk -O2 -c small.c
[532] %
[532] % gcctk -O3 -c small.c
during GIMPLE pass: vect
small.c: In function ‘f’:
small.c:3:6: internal compiler error: Segmentation fault
3 | void f() {
| ^
0xd0426f crash_signal
../../gcc-trunk/gcc/toplev.c:330
0x1006810 auto_vec<int, 0ul>::auto_vec()
../../gcc-trunk/gcc/vec.h:1540
0x1006810 vect_optimize_slp(vec_info*)
../../gcc-trunk/gcc/tree-vect-slp.c:2702
0xfea9c7 vect_analyze_loop_2
../../gcc-trunk/gcc/tree-vect-loop.c:2300
0xfea9c7 vect_analyze_loop(loop*, vec_info_shared*)
../../gcc-trunk/gcc/tree-vect-loop.c:2895
0x1015dbc try_vectorize_loop_1
../../gcc-trunk/gcc/tree-vectorizer.c:995
0x1016949 vectorize_loops()
../../gcc-trunk/gcc/tree-vectorizer.c:1229
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.
[533] %
[533] % cat small.c
int a, b, c, d;
void f() {
while (c++) {
int e = -1;
d = a ? e / a : e;
b ^= ~d;
}
}
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/97838] [11 Regression] ICE at -O3 on x86_64-pc-linux-gnu: Segmentation fault by r11-4428
2020-11-15 13:52 [Bug tree-optimization/97838] New: ICE at -O3 on x86_64-pc-linux-gnu: Segmentation fault zhendong.su at inf dot ethz.ch
@ 2020-11-15 15:09 ` hjl.tools at gmail dot com
2020-11-16 7:27 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: hjl.tools at gmail dot com @ 2020-11-15 15:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97838
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|ICE at -O3 on |[11 Regression] ICE at -O3
|x86_64-pc-linux-gnu: |on x86_64-pc-linux-gnu:
|Segmentation fault |Segmentation fault by
| |r11-4428
Status|UNCONFIRMED |NEW
Target Milestone|--- |11.0
Last reconfirmed| |2020-11-15
CC| |hjl.tools at gmail dot com,
| |rguenther at suse dot de
Ever confirmed|0 |1
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
It is caused by r11-4428
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/97838] [11 Regression] ICE at -O3 on x86_64-pc-linux-gnu: Segmentation fault by r11-4428
2020-11-15 13:52 [Bug tree-optimization/97838] New: ICE at -O3 on x86_64-pc-linux-gnu: Segmentation fault zhendong.su at inf dot ethz.ch
2020-11-15 15:09 ` [Bug tree-optimization/97838] [11 Regression] ICE at -O3 on x86_64-pc-linux-gnu: Segmentation fault by r11-4428 hjl.tools at gmail dot com
@ 2020-11-16 7:27 ` rguenth at gcc dot gnu.org
2020-11-16 11:11 ` cvs-commit at gcc dot gnu.org
2020-11-16 11:12 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2020-11-16 7:27 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97838
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
Priority|P3 |P1
Status|NEW |ASSIGNED
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/97838] [11 Regression] ICE at -O3 on x86_64-pc-linux-gnu: Segmentation fault by r11-4428
2020-11-15 13:52 [Bug tree-optimization/97838] New: ICE at -O3 on x86_64-pc-linux-gnu: Segmentation fault zhendong.su at inf dot ethz.ch
2020-11-15 15:09 ` [Bug tree-optimization/97838] [11 Regression] ICE at -O3 on x86_64-pc-linux-gnu: Segmentation fault by r11-4428 hjl.tools at gmail dot com
2020-11-16 7:27 ` rguenth at gcc dot gnu.org
@ 2020-11-16 11:11 ` cvs-commit at gcc dot gnu.org
2020-11-16 11:12 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2020-11-16 11:11 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97838
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:
https://gcc.gnu.org/g:d0a206abc6cbf0e992bf82bbb3584686eae05d34
commit r11-5050-gd0a206abc6cbf0e992bf82bbb3584686eae05d34
Author: Richard Biener <rguenther@suse.de>
Date: Mon Nov 16 09:28:03 2020 +0100
tree-optimization/97838 - fix SLP leaf detection
This properly handles reduction PHI nodes with unrepresented
initial value as leaf in the SLP graph.
2020-11-16 Richard Biener <rguenther@suse.de>
PR tree-optimization/97838
* tree-vect-slp.c (vect_slp_build_vertices): Properly handle
not backwards reachable cycles.
(vect_optimize_slp): Check a node is leaf before marking it
visited.
* gcc.dg/vect/pr97838.c: New testcase.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/97838] [11 Regression] ICE at -O3 on x86_64-pc-linux-gnu: Segmentation fault by r11-4428
2020-11-15 13:52 [Bug tree-optimization/97838] New: ICE at -O3 on x86_64-pc-linux-gnu: Segmentation fault zhendong.su at inf dot ethz.ch
` (2 preceding siblings ...)
2020-11-16 11:11 ` cvs-commit at gcc dot gnu.org
@ 2020-11-16 11:12 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2020-11-16 11:12 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97838
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2020-11-16 11:12 UTC | newest]
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2020-11-15 13:52 [Bug tree-optimization/97838] New: ICE at -O3 on x86_64-pc-linux-gnu: Segmentation fault zhendong.su at inf dot ethz.ch
2020-11-15 15:09 ` [Bug tree-optimization/97838] [11 Regression] ICE at -O3 on x86_64-pc-linux-gnu: Segmentation fault by r11-4428 hjl.tools at gmail dot com
2020-11-16 7:27 ` rguenth at gcc dot gnu.org
2020-11-16 11:11 ` cvs-commit at gcc dot gnu.org
2020-11-16 11:12 ` rguenth at gcc dot gnu.org
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