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* [Bug target/114656] New: ~5% slowdown of 538.imagick_r on aarch64
@ 2024-04-09 13:22 pheeck at gcc dot gnu.org
2024-04-09 14:18 ` [Bug target/114656] " jakub at gcc dot gnu.org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: pheeck at gcc dot gnu.org @ 2024-04-09 13:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114656
Bug ID: 114656
Summary: ~5% slowdown of 538.imagick_r on aarch64
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: missed-optimization, needs-bisection
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: pheeck at gcc dot gnu.org
Blocks: 26163
Target Milestone: ---
Host: aarch64-gnu-linux
Target: aarch64-gnu-linux
As seen here
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=585.507.0
between commits
r14-9649-gbb04a11418f54c
r14-9728-g6fc84f680d098f
there was a 5% exec time slowdown of 538.imagick_r SPEC2017 benchmark on
aarch64 with compilation options -Ofast
5% slowdown can be also seen with -Ofast -march=native
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=584.507.0
The CPU is Ampere Altra Neoverse N1.
Btw here are the same graphs including also data for GCC13. It is clear that
this isn't a regression against GCC13.
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.7=882.507.0&plot.8=585.507.0&
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.7=881.507.0&plot.8=584.507.0&
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26163
[Bug 26163] [meta-bug] missed optimization in SPEC (2k17, 2k and 2k6 and 95)
^ permalink raw reply [flat|nested] 4+ messages in thread* [Bug target/114656] ~5% slowdown of 538.imagick_r on aarch64 2024-04-09 13:22 [Bug target/114656] New: ~5% slowdown of 538.imagick_r on aarch64 pheeck at gcc dot gnu.org @ 2024-04-09 14:18 ` jakub at gcc dot gnu.org 2024-04-09 16:14 ` pheeck at gcc dot gnu.org 2024-04-14 19:42 ` [Bug target/114656] [15 Regression] ~5% slowdown of 538.imagick_r on aarch64 since r14-9692 pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: jakub at gcc dot gnu.org @ 2024-04-09 14:18 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114656 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Can you try to revert r14-9692 if that commit isn't the cause? ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/114656] ~5% slowdown of 538.imagick_r on aarch64 2024-04-09 13:22 [Bug target/114656] New: ~5% slowdown of 538.imagick_r on aarch64 pheeck at gcc dot gnu.org 2024-04-09 14:18 ` [Bug target/114656] " jakub at gcc dot gnu.org @ 2024-04-09 16:14 ` pheeck at gcc dot gnu.org 2024-04-14 19:42 ` [Bug target/114656] [15 Regression] ~5% slowdown of 538.imagick_r on aarch64 since r14-9692 pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: pheeck at gcc dot gnu.org @ 2024-04-09 16:14 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114656 --- Comment #2 from Filip Kastl <pheeck at gcc dot gnu.org> --- (In reply to Jakub Jelinek from comment #1) > Can you try to revert r14-9692 if that commit isn't the cause? I have tried reverting r14-9692 and that indeed removed the slowdown. The benchmark ran as fast as on r14-9649-gbb04a11418f54c. So it seems that r14-9692 is the cause of this slowdown. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/114656] [15 Regression] ~5% slowdown of 538.imagick_r on aarch64 since r14-9692 2024-04-09 13:22 [Bug target/114656] New: ~5% slowdown of 538.imagick_r on aarch64 pheeck at gcc dot gnu.org 2024-04-09 14:18 ` [Bug target/114656] " jakub at gcc dot gnu.org 2024-04-09 16:14 ` pheeck at gcc dot gnu.org @ 2024-04-14 19:42 ` pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2024-04-14 19:42 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114656 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |15.0 Ever confirmed|0 |1 Last reconfirmed| |2024-04-14 Summary|~5% slowdown of |[15 Regression] ~5% |538.imagick_r on aarch64 |slowdown of 538.imagick_r |since r14-9692 |on aarch64 since r14-9692 Status|UNCONFIRMED |NEW --- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- . Patch weas reverted but it will be added back after branching so ... ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2024-04-14 19:42 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2024-04-09 13:22 [Bug target/114656] New: ~5% slowdown of 538.imagick_r on aarch64 pheeck at gcc dot gnu.org 2024-04-09 14:18 ` [Bug target/114656] " jakub at gcc dot gnu.org 2024-04-09 16:14 ` pheeck at gcc dot gnu.org 2024-04-14 19:42 ` [Bug target/114656] [15 Regression] ~5% slowdown of 538.imagick_r on aarch64 since r14-9692 pinskia at gcc dot gnu.org
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