Bug 109796 - 548.exchange2_r compiled with -O2 -flto regressed by 5% on aarch64 between r14-135-gd06e9264b0192c and r14-192-g636e2273aec555
Summary: 548.exchange2_r compiled with -O2 -flto regressed by 5% on aarch64 between r1...
Status: RESOLVED FIXED
Alias: None
Product: gcc
Classification: Unclassified
Component: target (show other bugs)
Version: 14.0
: P3 normal
Target Milestone: ---
Assignee: Not yet assigned to anyone
URL:
Keywords: missed-optimization
Depends on:
Blocks: spec
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Reported: 2023-05-10 14:18 UTC by Martin Jambor
Modified: 2023-12-15 19:56 UTC (History)
2 users (show)

See Also:
Host: aarch64-linux
Target: aarch64-linux
Build:
Known to work:
Known to fail:
Last reconfirmed:

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Description Martin Jambor 2023-05-10 14:18:10 UTC 
The slowdown can be seen clearly at

https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=581.407.0

Fortran at -O2 may not be super important and the slowdown is not huge but it looks very stable so maybe worth a look.  I do not see any similar regression on a different architecture or configuration.
Comment 1 Andrew Pinski 2023-12-15 19:54:16 UTC 
Looks like this has been resolved.