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* [Bug tree-optimization/111478] New: [12/13/14 regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250
@ 2023-09-19 13:29 nsz at gcc dot gnu.org
2023-09-19 13:36 ` [Bug tree-optimization/111478] " nsz at gcc dot gnu.org
` (10 more replies)
0 siblings, 11 replies; 12+ messages in thread
From: nsz at gcc dot gnu.org @ 2023-09-19 13:29 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111478
Bug ID: 111478
Summary: [12/13/14 regression] aarch64 SVE ICE: in
compute_live_loop_exits, at tree-ssa-loop-manip.cc:250
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: nsz at gcc dot gnu.org
Target Milestone: ---
$ cat bug.c
float a, d, e, f, g;
int b, c;
void h() {
for (; b; b++) {
for (; c;) {
float i = d = i;
}
a += f - e * g;
a += g + e * f;
}
}
$ gcc -c -O3 -march=armv8-a+sve bug.c
during GIMPLE pass: vect
<source>: In function 'h':
<source>:3:6: internal compiler error: in compute_live_loop_exits, at
tree-ssa-loop-manip.cc:250
3 | void h() {
| ^
0x1168eb4 compute_live_loop_exits
/data/jenkins/workspace/GNU-toolchain/fsf-trunk/src/gcc/gcc/tree-ssa-loop-manip.cc:250
0x1168eb4 add_exit_phis_var
/data/jenkins/workspace/GNU-toolchain/fsf-trunk/src/gcc/gcc/tree-ssa-loop-manip.cc:332
0x1168eb4 add_exit_phis
/data/jenkins/workspace/GNU-toolchain/fsf-trunk/src/gcc/gcc/tree-ssa-loop-manip.cc:393
0x1168eb4 rewrite_into_loop_closed_ssa_1
/data/jenkins/workspace/GNU-toolchain/fsf-trunk/src/gcc/gcc/tree-ssa-loop-manip.cc:606
0x1168eb4 rewrite_into_loop_closed_ssa(bitmap_head*, unsigned int)
/data/jenkins/workspace/GNU-toolchain/fsf-trunk/src/gcc/gcc/tree-ssa-loop-manip.cc:628
0x130a1e8 execute
/data/jenkins/workspace/GNU-toolchain/fsf-trunk/src/gcc/gcc/tree-vectorizer.cc:1358
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Compiler returned: 1
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/111478] [12/13/14 regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250
2023-09-19 13:29 [Bug tree-optimization/111478] New: [12/13/14 regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250 nsz at gcc dot gnu.org
@ 2023-09-19 13:36 ` nsz at gcc dot gnu.org
2023-09-19 14:30 ` rguenth at gcc dot gnu.org
` (9 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: nsz at gcc dot gnu.org @ 2023-09-19 13:36 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111478
--- Comment #1 from nsz at gcc dot gnu.org ---
see also bug 111479
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/111478] [12/13/14 regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250
2023-09-19 13:29 [Bug tree-optimization/111478] New: [12/13/14 regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250 nsz at gcc dot gnu.org
2023-09-19 13:36 ` [Bug tree-optimization/111478] " nsz at gcc dot gnu.org
@ 2023-09-19 14:30 ` rguenth at gcc dot gnu.org
2023-09-27 10:10 ` ktkachov at gcc dot gnu.org
` (8 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-09-19 14:30 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111478
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |aarch64
Last reconfirmed| |2023-09-19
Ever confirmed|0 |1
Target Milestone|--- |14.0
Status|UNCONFIRMED |NEW
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. We have a two-operator operation in the preheader instead of in the
loop body. IIRC we have a duplicate for this, this is all invariant operations
and we get confused applying loop masking to it somehow.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/111478] [12/13/14 regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250
2023-09-19 13:29 [Bug tree-optimization/111478] New: [12/13/14 regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250 nsz at gcc dot gnu.org
2023-09-19 13:36 ` [Bug tree-optimization/111478] " nsz at gcc dot gnu.org
2023-09-19 14:30 ` rguenth at gcc dot gnu.org
@ 2023-09-27 10:10 ` ktkachov at gcc dot gnu.org
2023-12-05 22:50 ` pinskia at gcc dot gnu.org
` (7 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: ktkachov at gcc dot gnu.org @ 2023-09-27 10:10 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111478
ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ktkachov at gcc dot gnu.org
Target Milestone|14.0 |12.4
Priority|P3 |P1
--- Comment #3 from ktkachov at gcc dot gnu.org ---
Marking as P1. We hit this with a Fortran reproducer:
SUBROUTINE REPRODUCER( M, A, LDA )
IMPLICIT NONE
INTEGER LDA, M, I
COMPLEX A( LDA, * )
DO I = 2, M
A( I, 1 ) = A( I, 1 ) / A( 1, 1 )
END DO
RETURN
END
on aarch64 with -march=armv8-a+sve -O3
The ICE triggeres on 12.3 but compiles fine wiht 12.2
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/111478] [12/13/14 regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250
2023-09-19 13:29 [Bug tree-optimization/111478] New: [12/13/14 regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250 nsz at gcc dot gnu.org
` (2 preceding siblings ...)
2023-09-27 10:10 ` ktkachov at gcc dot gnu.org
@ 2023-12-05 22:50 ` pinskia at gcc dot gnu.org
2023-12-05 22:51 ` pinskia at gcc dot gnu.org
` (6 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-12-05 22:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111478
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I can't reproduce either of the testcases here any more .
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/111478] [12/13/14 regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250
2023-09-19 13:29 [Bug tree-optimization/111478] New: [12/13/14 regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250 nsz at gcc dot gnu.org
` (3 preceding siblings ...)
2023-12-05 22:50 ` pinskia at gcc dot gnu.org
@ 2023-12-05 22:51 ` pinskia at gcc dot gnu.org
2024-01-17 12:38 ` [Bug tree-optimization/111478] [12/13 Regression] " rguenth at gcc dot gnu.org
` (5 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-12-05 22:51 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111478
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #4)
> I can't reproduce either of the testcases here any more .
I should say on the trunk.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/111478] [12/13 Regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250
2023-09-19 13:29 [Bug tree-optimization/111478] New: [12/13/14 regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250 nsz at gcc dot gnu.org
` (4 preceding siblings ...)
2023-12-05 22:51 ` pinskia at gcc dot gnu.org
@ 2024-01-17 12:38 ` rguenth at gcc dot gnu.org
2024-02-06 13:22 ` [Bug tree-optimization/111478] [12 " rguenth at gcc dot gnu.org
` (4 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu.org @ 2024-01-17 12:38 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111478
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[12/13/14 regression] |[12/13 Regression] aarch64
|aarch64 SVE ICE: in |SVE ICE: in
|compute_live_loop_exits, at |compute_live_loop_exits, at
|tree-ssa-loop-manip.cc:250 |tree-ssa-loop-manip.cc:250
Status|NEW |ASSIGNED
Known to work| |14.0
Priority|P1 |P2
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed by r14-5320-ge5f1956498251a4973d52c8aad3faf34d0443169, I'll take that for
backporting.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/111478] [12 Regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250
2023-09-19 13:29 [Bug tree-optimization/111478] New: [12/13/14 regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250 nsz at gcc dot gnu.org
` (5 preceding siblings ...)
2024-01-17 12:38 ` [Bug tree-optimization/111478] [12/13 Regression] " rguenth at gcc dot gnu.org
@ 2024-02-06 13:22 ` rguenth at gcc dot gnu.org
2024-02-07 10:29 ` saurabh.jha at arm dot com
` (3 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu.org @ 2024-02-06 13:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111478
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[12/13 Regression] aarch64 |[12 Regression] aarch64 SVE
|SVE ICE: in |ICE: in
|compute_live_loop_exits, at |compute_live_loop_exits, at
|tree-ssa-loop-manip.cc:250 |tree-ssa-loop-manip.cc:250
Known to work| |13.2.1
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Backported to GCC 13.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/111478] [12 Regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250
2023-09-19 13:29 [Bug tree-optimization/111478] New: [12/13/14 regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250 nsz at gcc dot gnu.org
` (6 preceding siblings ...)
2024-02-06 13:22 ` [Bug tree-optimization/111478] [12 " rguenth at gcc dot gnu.org
@ 2024-02-07 10:29 ` saurabh.jha at arm dot com
2024-02-07 10:44 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: saurabh.jha at arm dot com @ 2024-02-07 10:29 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111478
--- Comment #8 from Saurabh Jha <saurabh.jha at arm dot com> ---
Hi Richard,
Are you also planning to backport it to gcc-12?
Regards,
Saurabh
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/111478] [12 Regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250
2023-09-19 13:29 [Bug tree-optimization/111478] New: [12/13/14 regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250 nsz at gcc dot gnu.org
` (7 preceding siblings ...)
2024-02-07 10:29 ` saurabh.jha at arm dot com
@ 2024-02-07 10:44 ` rguenth at gcc dot gnu.org
2024-03-01 13:46 ` avieira at gcc dot gnu.org
2024-03-01 13:54 ` rguenth at gcc dot gnu.org
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu.org @ 2024-02-07 10:44 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111478
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Saurabh Jha from comment #8)
> Hi Richard,
>
> Are you also planning to backport it to gcc-12?
Yes.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/111478] [12 Regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250
2023-09-19 13:29 [Bug tree-optimization/111478] New: [12/13/14 regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250 nsz at gcc dot gnu.org
` (8 preceding siblings ...)
2024-02-07 10:44 ` rguenth at gcc dot gnu.org
@ 2024-03-01 13:46 ` avieira at gcc dot gnu.org
2024-03-01 13:54 ` rguenth at gcc dot gnu.org
10 siblings, 0 replies; 12+ messages in thread
From: avieira at gcc dot gnu.org @ 2024-03-01 13:46 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111478
avieira at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |avieira at gcc dot gnu.org
--- Comment #10 from avieira at gcc dot gnu.org ---
This has now been backported to gcc-13 and gcc-12, so I think we should close,
will leave that to Richard.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/111478] [12 Regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250
2023-09-19 13:29 [Bug tree-optimization/111478] New: [12/13/14 regression] aarch64 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250 nsz at gcc dot gnu.org
` (9 preceding siblings ...)
2024-03-01 13:46 ` avieira at gcc dot gnu.org
@ 2024-03-01 13:54 ` rguenth at gcc dot gnu.org
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu.org @ 2024-03-01 13:54 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111478
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 12+ messages in thread
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2023-09-19 13:36 ` [Bug tree-optimization/111478] " nsz at gcc dot gnu.org
2023-09-19 14:30 ` rguenth at gcc dot gnu.org
2023-09-27 10:10 ` ktkachov at gcc dot gnu.org
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2024-01-17 12:38 ` [Bug tree-optimization/111478] [12/13 Regression] " rguenth at gcc dot gnu.org
2024-02-06 13:22 ` [Bug tree-optimization/111478] [12 " rguenth at gcc dot gnu.org
2024-02-07 10:29 ` saurabh.jha at arm dot com
2024-02-07 10:44 ` rguenth at gcc dot gnu.org
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