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* [Bug middle-end/111152] New: ~7-9% performance regression on 510.parest_r SPEC 2017 benchmark
@ 2023-08-25 7:54 fkastl at suse dot cz
2023-08-25 8:08 ` [Bug middle-end/111152] " crazylht at gmail dot com
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: fkastl at suse dot cz @ 2023-08-25 7:54 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111152
Bug ID: 111152
Summary: ~7-9% performance regression on 510.parest_r SPEC 2017
benchmark
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: needs-bisection
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: fkastl at suse dot cz
CC: mjambor at suse dot cz
Target Milestone: ---
There is a performance regression of about 7-9% on the 510.parest_r SPEC 2017
benchmark.
Between g:d073e2d75d9ed492 and g:9ade70bb86c8744f
Intel Xeon Gold 5315Y, all with -Ofast native, some with lto and/or pgo
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=801.457.0
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=796.457.0
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=792.457.0
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=797.457.0
With Zen3 -O2 generic lto pgo the regression is less noticeable (only 4%)
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=694.457.0
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/111152] ~7-9% performance regression on 510.parest_r SPEC 2017 benchmark
2023-08-25 7:54 [Bug middle-end/111152] New: ~7-9% performance regression on 510.parest_r SPEC 2017 benchmark fkastl at suse dot cz
@ 2023-08-25 8:08 ` crazylht at gmail dot com
2023-08-25 8:09 ` crazylht at gmail dot com
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: crazylht at gmail dot com @ 2023-08-25 8:08 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111152
Hongtao.liu <crazylht at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |crazylht at gmail dot com
--- Comment #1 from Hongtao.liu <crazylht at gmail dot com> ---
It's PR111064
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/111152] ~7-9% performance regression on 510.parest_r SPEC 2017 benchmark
2023-08-25 7:54 [Bug middle-end/111152] New: ~7-9% performance regression on 510.parest_r SPEC 2017 benchmark fkastl at suse dot cz
2023-08-25 8:08 ` [Bug middle-end/111152] " crazylht at gmail dot com
@ 2023-08-25 8:09 ` crazylht at gmail dot com
2023-08-25 8:15 ` fkastl at suse dot cz
2023-08-25 8:16 ` fkastl at suse dot cz
3 siblings, 0 replies; 5+ messages in thread
From: crazylht at gmail dot com @ 2023-08-25 8:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111152
--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> ---
> With Zen3 -O2 generic lto pgo the regression is less noticeable (only 4%)
> https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=694.457.0
Not sure about this part
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/111152] ~7-9% performance regression on 510.parest_r SPEC 2017 benchmark
2023-08-25 7:54 [Bug middle-end/111152] New: ~7-9% performance regression on 510.parest_r SPEC 2017 benchmark fkastl at suse dot cz
2023-08-25 8:08 ` [Bug middle-end/111152] " crazylht at gmail dot com
2023-08-25 8:09 ` crazylht at gmail dot com
@ 2023-08-25 8:15 ` fkastl at suse dot cz
2023-08-25 8:16 ` fkastl at suse dot cz
3 siblings, 0 replies; 5+ messages in thread
From: fkastl at suse dot cz @ 2023-08-25 8:15 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111152
--- Comment #3 from Filip Kastl <fkastl at suse dot cz> ---
Ah, sorry. Didn't notice I'm making a duplicate.
The Zen3 regression isn't that big and could just be noise.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/111152] ~7-9% performance regression on 510.parest_r SPEC 2017 benchmark
2023-08-25 7:54 [Bug middle-end/111152] New: ~7-9% performance regression on 510.parest_r SPEC 2017 benchmark fkastl at suse dot cz
` (2 preceding siblings ...)
2023-08-25 8:15 ` fkastl at suse dot cz
@ 2023-08-25 8:16 ` fkastl at suse dot cz
3 siblings, 0 replies; 5+ messages in thread
From: fkastl at suse dot cz @ 2023-08-25 8:16 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111152
Filip Kastl <fkastl at suse dot cz> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #4 from Filip Kastl <fkastl at suse dot cz> ---
Marking as duplicate.
*** This bug has been marked as a duplicate of bug 111064 ***
^ permalink raw reply [flat|nested] 5+ messages in thread
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2023-08-25 7:54 [Bug middle-end/111152] New: ~7-9% performance regression on 510.parest_r SPEC 2017 benchmark fkastl at suse dot cz
2023-08-25 8:08 ` [Bug middle-end/111152] " crazylht at gmail dot com
2023-08-25 8:09 ` crazylht at gmail dot com
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