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* [Bug middle-end/101909] New: 73% regression on tfft benchmark for -O2 -ftree-loop-vectorize compared to -O2 on zen hardware
@ 2021-08-14 14:29 hubicka at gcc dot gnu.org
2021-08-16 9:08 ` [Bug tree-optimization/101909] " rguenth at gcc dot gnu.org
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: hubicka at gcc dot gnu.org @ 2021-08-14 14:29 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101909
Bug ID: 101909
Summary: 73% regression on tfft benchmark for -O2
-ftree-loop-vectorize compared to -O2 on zen hardware
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: hubicka at gcc dot gnu.org
Target Milestone: ---
https://lnt.opensuse.org/db_default/v4/CPP/latest_runs_report?younger_in_days=14&older_in_days=0&all_changes=on&min_percentage_change=0.001&revisions=e54acea9e5a821448af97c66e94a1e4c4f977d5d%2Ce87209a1269622017bf3d98bf71502dcb0f893aa%2C73474527aaa24d9236aca074c5494a07f40ce058&include_user_branches=on
This regression seems to be limited to zenith tester and does not reproduce on
benzen
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/101909] 73% regression on tfft benchmark for -O2 -ftree-loop-vectorize compared to -O2 on zen hardware
2021-08-14 14:29 [Bug middle-end/101909] New: 73% regression on tfft benchmark for -O2 -ftree-loop-vectorize compared to -O2 on zen hardware hubicka at gcc dot gnu.org
@ 2021-08-16 9:08 ` rguenth at gcc dot gnu.org
2021-08-16 9:17 ` hubicka at ucw dot cz
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2021-08-16 9:08 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101909
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|middle-end |tree-optimization
Keywords| |missed-optimization
Blocks| |53947
Target| |x86_64-*-*
CC| |rguenth at gcc dot gnu.org
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
So that's znver1 (split AVX IIRC) compared to znver2?
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947
[Bug 53947] [meta-bug] vectorizer missed-optimizations
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/101909] 73% regression on tfft benchmark for -O2 -ftree-loop-vectorize compared to -O2 on zen hardware
2021-08-14 14:29 [Bug middle-end/101909] New: 73% regression on tfft benchmark for -O2 -ftree-loop-vectorize compared to -O2 on zen hardware hubicka at gcc dot gnu.org
2021-08-16 9:08 ` [Bug tree-optimization/101909] " rguenth at gcc dot gnu.org
@ 2021-08-16 9:17 ` hubicka at ucw dot cz
2021-08-16 9:24 ` marxin at gcc dot gnu.org
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: hubicka at ucw dot cz @ 2021-08-16 9:17 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101909
--- Comment #2 from Jan Hubicka <hubicka at ucw dot cz> ---
> So that's znver1 (split AVX IIRC) compared to znver2?
Martin will know how to decode machine names. I am never sure.
It is with generic, so split AVX does not make difference.
Honza
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/101909] 73% regression on tfft benchmark for -O2 -ftree-loop-vectorize compared to -O2 on zen hardware
2021-08-14 14:29 [Bug middle-end/101909] New: 73% regression on tfft benchmark for -O2 -ftree-loop-vectorize compared to -O2 on zen hardware hubicka at gcc dot gnu.org
2021-08-16 9:08 ` [Bug tree-optimization/101909] " rguenth at gcc dot gnu.org
2021-08-16 9:17 ` hubicka at ucw dot cz
@ 2021-08-16 9:24 ` marxin at gcc dot gnu.org
2021-08-16 9:56 ` rguenther at suse dot de
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: marxin at gcc dot gnu.org @ 2021-08-16 9:24 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101909
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |marxin at gcc dot gnu.org
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Jan Hubicka from comment #2)
> > So that's znver1 (split AVX IIRC) compared to znver2?
> Martin will know how to decode machine names. I am never sure.
> It is with generic, so split AVX does not make difference.
>
> Honza
zenith:
https://lnt.opensuse.org/db_default/v4/SPEC/machine/376
benzen:
https://lnt.opensuse.org/db_default/v4/SPEC/machine/393
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/101909] 73% regression on tfft benchmark for -O2 -ftree-loop-vectorize compared to -O2 on zen hardware
2021-08-14 14:29 [Bug middle-end/101909] New: 73% regression on tfft benchmark for -O2 -ftree-loop-vectorize compared to -O2 on zen hardware hubicka at gcc dot gnu.org
` (2 preceding siblings ...)
2021-08-16 9:24 ` marxin at gcc dot gnu.org
@ 2021-08-16 9:56 ` rguenther at suse dot de
2021-08-17 1:42 ` crazylht at gmail dot com
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: rguenther at suse dot de @ 2021-08-16 9:56 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101909
--- Comment #4 from rguenther at suse dot de <rguenther at suse dot de> ---
On Mon, 16 Aug 2021, marxin at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101909
>
> Martin Liška <marxin at gcc dot gnu.org> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> CC| |marxin at gcc dot gnu.org
>
> --- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
> (In reply to Jan Hubicka from comment #2)
> > > So that's znver1 (split AVX IIRC) compared to znver2?
> > Martin will know how to decode machine names. I am never sure.
> > It is with generic, so split AVX does not make difference.
> >
> > Honza
>
> zenith:
> https://lnt.opensuse.org/db_default/v4/SPEC/machine/376
>
> benzen:
> https://lnt.opensuse.org/db_default/v4/SPEC/machine/393
So indeed zenith is znver1 and benzen znver2. But yeah, with
generic -O2 we don't use AVX.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/101909] 73% regression on tfft benchmark for -O2 -ftree-loop-vectorize compared to -O2 on zen hardware
2021-08-14 14:29 [Bug middle-end/101909] New: 73% regression on tfft benchmark for -O2 -ftree-loop-vectorize compared to -O2 on zen hardware hubicka at gcc dot gnu.org
` (3 preceding siblings ...)
2021-08-16 9:56 ` rguenther at suse dot de
@ 2021-08-17 1:42 ` crazylht at gmail dot com
2022-03-07 21:30 ` [Bug tree-optimization/101909] [12 Regression] " pinskia at gcc dot gnu.org
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: crazylht at gmail dot com @ 2021-08-17 1:42 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101909
--- Comment #5 from Hongtao.liu <crazylht at gmail dot com> ---
Just note there is no regression for tfft benchmark comparing -O2
-ftree-loop-vectorize to -O2 on CLX.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/101909] [12 Regression] 73% regression on tfft benchmark for -O2 -ftree-loop-vectorize compared to -O2 on zen hardware
2021-08-14 14:29 [Bug middle-end/101909] New: 73% regression on tfft benchmark for -O2 -ftree-loop-vectorize compared to -O2 on zen hardware hubicka at gcc dot gnu.org
` (4 preceding siblings ...)
2021-08-17 1:42 ` crazylht at gmail dot com
@ 2022-03-07 21:30 ` pinskia at gcc dot gnu.org
2022-05-06 8:30 ` [Bug tree-optimization/101909] [12/13 " jakub at gcc dot gnu.org
2023-05-08 12:22 ` [Bug tree-optimization/101909] [12/13/14 " rguenth at gcc dot gnu.org
7 siblings, 0 replies; 9+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-03-07 21:30 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101909
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |12.0
Summary|73% regression on tfft |[12 Regression] 73%
|benchmark for -O2 |regression on tfft
|-ftree-loop-vectorize |benchmark for -O2
|compared to -O2 on zen |-ftree-loop-vectorize
|hardware |compared to -O2 on zen
| |hardware
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/101909] [12/13 Regression] 73% regression on tfft benchmark for -O2 -ftree-loop-vectorize compared to -O2 on zen hardware
2021-08-14 14:29 [Bug middle-end/101909] New: 73% regression on tfft benchmark for -O2 -ftree-loop-vectorize compared to -O2 on zen hardware hubicka at gcc dot gnu.org
` (5 preceding siblings ...)
2022-03-07 21:30 ` [Bug tree-optimization/101909] [12 Regression] " pinskia at gcc dot gnu.org
@ 2022-05-06 8:30 ` jakub at gcc dot gnu.org
2023-05-08 12:22 ` [Bug tree-optimization/101909] [12/13/14 " rguenth at gcc dot gnu.org
7 siblings, 0 replies; 9+ messages in thread
From: jakub at gcc dot gnu.org @ 2022-05-06 8:30 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101909
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|12.0 |12.2
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 12.1 is being released, retargeting bugs to GCC 12.2.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/101909] [12/13/14 Regression] 73% regression on tfft benchmark for -O2 -ftree-loop-vectorize compared to -O2 on zen hardware
2021-08-14 14:29 [Bug middle-end/101909] New: 73% regression on tfft benchmark for -O2 -ftree-loop-vectorize compared to -O2 on zen hardware hubicka at gcc dot gnu.org
` (6 preceding siblings ...)
2022-05-06 8:30 ` [Bug tree-optimization/101909] [12/13 " jakub at gcc dot gnu.org
@ 2023-05-08 12:22 ` rguenth at gcc dot gnu.org
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-05-08 12:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101909
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|12.3 |12.4
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 12.3 is being released, retargeting bugs to GCC 12.4.
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2023-05-08 12:22 UTC | newest]
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2021-08-14 14:29 [Bug middle-end/101909] New: 73% regression on tfft benchmark for -O2 -ftree-loop-vectorize compared to -O2 on zen hardware hubicka at gcc dot gnu.org
2021-08-16 9:08 ` [Bug tree-optimization/101909] " rguenth at gcc dot gnu.org
2021-08-16 9:17 ` hubicka at ucw dot cz
2021-08-16 9:24 ` marxin at gcc dot gnu.org
2021-08-16 9:56 ` rguenther at suse dot de
2021-08-17 1:42 ` crazylht at gmail dot com
2022-03-07 21:30 ` [Bug tree-optimization/101909] [12 Regression] " pinskia at gcc dot gnu.org
2022-05-06 8:30 ` [Bug tree-optimization/101909] [12/13 " jakub at gcc dot gnu.org
2023-05-08 12:22 ` [Bug tree-optimization/101909] [12/13/14 " rguenth at gcc dot gnu.org
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