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* [Bug c/105163] New: ICE: SSA corruption
@ 2022-04-05 16:16 gscfq@t-online.de
2022-04-05 16:17 ` [Bug c/105163] " gscfq@t-online.de
` (8 more replies)
0 siblings, 9 replies; 10+ messages in thread
From: gscfq@t-online.de @ 2022-04-05 16:16 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105163
Bug ID: 105163
Summary: ICE: SSA corruption
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gscfq@t-online.de
Target Milestone: ---
Affects versions down to at least r5, at -O1+ :
(follow-up of pr79411.c)
$ cat z1.c
typedef struct __jmp_buf_tag { char buf[1024]; } jmp_buf[1];
extern int setjmp (jmp_buf);
extern int bar (unsigned int *);
extern jmp_buf *baz (void);
struct C { int c1; };
void foo (struct C *x, int *z, int e)
{
unsigned int d = 0;
long f;
setjmp (*baz());
f = 1 + ~d;
d = 8;
if ((!0) && !e && bar(z)) *z = 1 + f;
}
$ gcc-12-20220403 -c z1.c -O2
Unable to coalesce ssa_names 5 and 17 which are marked as MUST COALESCE.
d_5(ab) and d_17(ab)
during RTL pass: expand
z1.c: In function 'foo':
z1.c:6:6: internal compiler error: SSA corruption
6 | void foo (struct C *x, int *z, int e)
| ^~~
0xd18bc8 fail_abnormal_edge_coalesce
../../gcc/tree-ssa-coalesce.cc:1003
0xd18bc8 coalesce_partitions
../../gcc/tree-ssa-coalesce.cc:1425
0xd18bc8 coalesce_ssa_name(_var_map*)
../../gcc/tree-ssa-coalesce.cc:1755
0xcc26a0 remove_ssa_form
../../gcc/tree-outof-ssa.cc:1065
0xcc26a0 rewrite_out_of_ssa(ssaexpand*)
../../gcc/tree-outof-ssa.cc:1323
0x7cfa73 execute
../../gcc/cfgexpand.cc:6585
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c/105163] ICE: SSA corruption
2022-04-05 16:16 [Bug c/105163] New: ICE: SSA corruption gscfq@t-online.de
@ 2022-04-05 16:17 ` gscfq@t-online.de
2022-04-05 16:59 ` [Bug tree-optimization/105163] " jakub at gcc dot gnu.org
` (7 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: gscfq@t-online.de @ 2022-04-05 16:17 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105163
G. Steinmetz <gscfq@t-online.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-pc-linux-gnu
Keywords| |ice-on-valid-code
--- Comment #1 from G. Steinmetz <gscfq@t-online.de> ---
A corrupted variant starts to give an ICE between 20201018 and 20201108 :
$ cat z2.c
typedef struct __jmp_buf_tag { char buf[1024]; } jmp_buf[1];
extern int setjmp (jmp_buf);
extern jmp_buf *baz (void);
struct A { int b; };
void foo (struct A, int *z, int c)
{
unsigned d = 0;
long e;
setjmp (*baz());
e = 1 + ~d;
d = 8;
if ((!0) && !c && bar(z)) *z = 1 + e;
}
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/105163] ICE: SSA corruption
2022-04-05 16:16 [Bug c/105163] New: ICE: SSA corruption gscfq@t-online.de
2022-04-05 16:17 ` [Bug c/105163] " gscfq@t-online.de
@ 2022-04-05 16:59 ` jakub at gcc dot gnu.org
2022-04-05 17:00 ` [Bug tree-optimization/105163] [9/10/11/12 Regression] ICE: SSA corruption since r0-122928 jakub at gcc dot gnu.org
` (6 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: jakub at gcc dot gnu.org @ 2022-04-05 16:59 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105163
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
#c0 started to ICE with r0-122928-gf6b64c35014ca111711e753be85bb99280a1e115
#c1 as well if you don't omit the argument name.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/105163] [9/10/11/12 Regression] ICE: SSA corruption since r0-122928
2022-04-05 16:16 [Bug c/105163] New: ICE: SSA corruption gscfq@t-online.de
2022-04-05 16:17 ` [Bug c/105163] " gscfq@t-online.de
2022-04-05 16:59 ` [Bug tree-optimization/105163] " jakub at gcc dot gnu.org
@ 2022-04-05 17:00 ` jakub at gcc dot gnu.org
2022-04-06 7:15 ` rguenth at gcc dot gnu.org
` (5 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: jakub at gcc dot gnu.org @ 2022-04-05 17:00 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105163
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2022-04-05
Ever confirmed|0 |1
Target Milestone|--- |9.5
CC| |jakub at gcc dot gnu.org
Summary|ICE: SSA corruption |[9/10/11/12 Regression]
| |ICE: SSA corruption since
| |r0-122928
Priority|P3 |P2
Status|UNCONFIRMED |NEW
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/105163] [9/10/11/12 Regression] ICE: SSA corruption since r0-122928
2022-04-05 16:16 [Bug c/105163] New: ICE: SSA corruption gscfq@t-online.de
` (2 preceding siblings ...)
2022-04-05 17:00 ` [Bug tree-optimization/105163] [9/10/11/12 Regression] ICE: SSA corruption since r0-122928 jakub at gcc dot gnu.org
@ 2022-04-06 7:15 ` rguenth at gcc dot gnu.org
2022-04-06 8:33 ` cvs-commit at gcc dot gnu.org
` (4 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-04-06 7:15 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105163
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
It's reassoc:
<bb 5> [local count: 1072883005]:
_1 = -d_4(ab);
d_17(ab) = 8;
...
@@ -47,7 +61,7 @@
goto <bb 9>; [50.00%]
<bb 8> [local count: 176954885]:
- _2 = _1 + 1;
+ _2 = 1 - d_4(ab);
_3 = (int) _2;
*z_19(D) = _3;
and that via negate propagation I guess.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/105163] [9/10/11/12 Regression] ICE: SSA corruption since r0-122928
2022-04-05 16:16 [Bug c/105163] New: ICE: SSA corruption gscfq@t-online.de
` (3 preceding siblings ...)
2022-04-06 7:15 ` rguenth at gcc dot gnu.org
@ 2022-04-06 8:33 ` cvs-commit at gcc dot gnu.org
2022-05-19 14:03 ` [Bug tree-optimization/105163] [9/10/11 " cvs-commit at gcc dot gnu.org
` (3 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-04-06 8:33 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105163
--- Comment #4 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:44fe49401725055a740ce47e80561b6932b8cd01
commit r12-8018-g44fe49401725055a740ce47e80561b6932b8cd01
Author: Richard Biener <rguenther@suse.de>
Date: Wed Apr 6 09:36:38 2022 +0200
tree-optimization/105163 - abnormal SSA coalescing and reassoc
The negate propagation optimizations in reassoc did not look out for
abnormal SSA coalescing issues. The following fixes that.
2022-04-06 Richard Biener <rguenther@suse.de>
PR tree-optimization/105163
* tree-ssa-reassoc.cc (repropagate_negates): Avoid propagating
negated abnormals.
* gcc.dg/torture/pr105163.c: New testcase.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/105163] [9/10/11 Regression] ICE: SSA corruption since r0-122928
2022-04-05 16:16 [Bug c/105163] New: ICE: SSA corruption gscfq@t-online.de
` (4 preceding siblings ...)
2022-04-06 8:33 ` cvs-commit at gcc dot gnu.org
@ 2022-05-19 14:03 ` cvs-commit at gcc dot gnu.org
2022-05-27 9:47 ` [Bug tree-optimization/105163] [10 " rguenth at gcc dot gnu.org
` (2 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-05-19 14:03 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105163
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:
https://gcc.gnu.org/g:132c3bb06a90887f5c173e00b7f2c5163e054ac1
commit r11-10015-g132c3bb06a90887f5c173e00b7f2c5163e054ac1
Author: Richard Biener <rguenther@suse.de>
Date: Wed Apr 6 09:36:38 2022 +0200
tree-optimization/105163 - abnormal SSA coalescing and reassoc
The negate propagation optimizations in reassoc did not look out for
abnormal SSA coalescing issues. The following fixes that.
2022-04-06 Richard Biener <rguenther@suse.de>
PR tree-optimization/105163
* tree-ssa-reassoc.c (repropagate_negates): Avoid propagating
negated abnormals.
* gcc.dg/torture/pr105163.c: New testcase.
(cherry picked from commit 44fe49401725055a740ce47e80561b6932b8cd01)
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/105163] [10 Regression] ICE: SSA corruption since r0-122928
2022-04-05 16:16 [Bug c/105163] New: ICE: SSA corruption gscfq@t-online.de
` (5 preceding siblings ...)
2022-05-19 14:03 ` [Bug tree-optimization/105163] [9/10/11 " cvs-commit at gcc dot gnu.org
@ 2022-05-27 9:47 ` rguenth at gcc dot gnu.org
2022-05-27 13:15 ` cvs-commit at gcc dot gnu.org
2022-05-27 13:18 ` rguenth at gcc dot gnu.org
8 siblings, 0 replies; 10+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-05-27 9:47 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105163
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|9.5 |10.4
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 9 branch is being closed
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/105163] [10 Regression] ICE: SSA corruption since r0-122928
2022-04-05 16:16 [Bug c/105163] New: ICE: SSA corruption gscfq@t-online.de
` (6 preceding siblings ...)
2022-05-27 9:47 ` [Bug tree-optimization/105163] [10 " rguenth at gcc dot gnu.org
@ 2022-05-27 13:15 ` cvs-commit at gcc dot gnu.org
2022-05-27 13:18 ` rguenth at gcc dot gnu.org
8 siblings, 0 replies; 10+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-05-27 13:15 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105163
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:
https://gcc.gnu.org/g:bdfe7e5510b28c3ab8f8cd0fd7f715f2da3af938
commit r10-10767-gbdfe7e5510b28c3ab8f8cd0fd7f715f2da3af938
Author: Richard Biener <rguenther@suse.de>
Date: Wed Apr 6 09:36:38 2022 +0200
tree-optimization/105163 - abnormal SSA coalescing and reassoc
The negate propagation optimizations in reassoc did not look out for
abnormal SSA coalescing issues. The following fixes that.
2022-04-06 Richard Biener <rguenther@suse.de>
PR tree-optimization/105163
* tree-ssa-reassoc.c (repropagate_negates): Avoid propagating
negated abnormals.
* gcc.dg/torture/pr105163.c: New testcase.
(cherry picked from commit 44fe49401725055a740ce47e80561b6932b8cd01)
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/105163] [10 Regression] ICE: SSA corruption since r0-122928
2022-04-05 16:16 [Bug c/105163] New: ICE: SSA corruption gscfq@t-online.de
` (7 preceding siblings ...)
2022-05-27 13:15 ` cvs-commit at gcc dot gnu.org
@ 2022-05-27 13:18 ` rguenth at gcc dot gnu.org
8 siblings, 0 replies; 10+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-05-27 13:18 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105163
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |10.3.1
Resolution|--- |FIXED
Known to fail| |10.3.0
Status|ASSIGNED |RESOLVED
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 10+ messages in thread
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2022-04-05 16:16 [Bug c/105163] New: ICE: SSA corruption gscfq@t-online.de
2022-04-05 16:17 ` [Bug c/105163] " gscfq@t-online.de
2022-04-05 16:59 ` [Bug tree-optimization/105163] " jakub at gcc dot gnu.org
2022-04-05 17:00 ` [Bug tree-optimization/105163] [9/10/11/12 Regression] ICE: SSA corruption since r0-122928 jakub at gcc dot gnu.org
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2022-05-27 9:47 ` [Bug tree-optimization/105163] [10 " rguenth at gcc dot gnu.org
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