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* [Bug tree-optimization/111893] New: range-op misses {L,R}ROTATE_EXPR handling
@ 2023-10-20 9:36 rguenth at gcc dot gnu.org
2023-10-20 9:37 ` [Bug tree-optimization/111893] " rguenth at gcc dot gnu.org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-10-20 9:36 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111893
Bug ID: 111893
Summary: range-op misses {L,R}ROTATE_EXPR handling
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: rguenth at gcc dot gnu.org
Target Milestone: ---
Seen when trying to check whether we exercise the constraint on the rotate
amount operand.
I also noticed we miss generic.texi documentation for those codes.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/111893] range-op misses {L,R}ROTATE_EXPR handling
2023-10-20 9:36 [Bug tree-optimization/111893] New: range-op misses {L,R}ROTATE_EXPR handling rguenth at gcc dot gnu.org
@ 2023-10-20 9:37 ` rguenth at gcc dot gnu.org
2023-10-20 9:46 ` jakub at gcc dot gnu.org
2023-11-09 3:34 ` pinskia at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-10-20 9:37 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111893
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
CC| |amacleod at redhat dot com,
| |jakub at gcc dot gnu.org
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I'm not sure if our rotate pattern matching is careful to not introduce
out-of-bound shifts? (but I think I remember fixes there)
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/111893] range-op misses {L,R}ROTATE_EXPR handling
2023-10-20 9:36 [Bug tree-optimization/111893] New: range-op misses {L,R}ROTATE_EXPR handling rguenth at gcc dot gnu.org
2023-10-20 9:37 ` [Bug tree-optimization/111893] " rguenth at gcc dot gnu.org
@ 2023-10-20 9:46 ` jakub at gcc dot gnu.org
2023-11-09 3:34 ` pinskia at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: jakub at gcc dot gnu.org @ 2023-10-20 9:46 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111893
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think it is, but obviously an out of range constant can propagate into the
rotates at any time after the rotate pattern matching.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/111893] range-op misses {L,R}ROTATE_EXPR handling
2023-10-20 9:36 [Bug tree-optimization/111893] New: range-op misses {L,R}ROTATE_EXPR handling rguenth at gcc dot gnu.org
2023-10-20 9:37 ` [Bug tree-optimization/111893] " rguenth at gcc dot gnu.org
2023-10-20 9:46 ` jakub at gcc dot gnu.org
@ 2023-11-09 3:34 ` pinskia at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-11-09 3:34 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111893
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2023-11-09
Severity|normal |enhancement
Ever confirmed|0 |1
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2023-11-09 3:34 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2023-10-20 9:36 [Bug tree-optimization/111893] New: range-op misses {L,R}ROTATE_EXPR handling rguenth at gcc dot gnu.org
2023-10-20 9:37 ` [Bug tree-optimization/111893] " rguenth at gcc dot gnu.org
2023-10-20 9:46 ` jakub at gcc dot gnu.org
2023-11-09 3:34 ` pinskia at gcc dot gnu.org
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