Bug 114268 - [14 Regression] 5% exec time regression in 454.calculix on Aarch64
Summary: [14 Regression] 5% exec time regression in 454.calculix on Aarch64
Status: RESOLVED FIXED
Alias: None
Product: gcc
Classification: Unclassified
Component: tree-optimization (show other bugs)
Version: 14.0
: P2 normal
Target Milestone: 14.0
Assignee: Not yet assigned to anyone
URL:
Keywords: missed-optimization, needs-bisection
Depends on:
Blocks: spec
  Show dependency tree / graph
 
Reported: 2024-03-07 14:41 UTC by Filip Kastl
Modified: 2024-03-21 09:22 UTC (History)
3 users (show)

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

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Description Filip Kastl 2024-03-07 14:41:17 UTC 
As seen on the graph here

https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=579.170.0

between

g:e42287eaed2c93f1
and
g:4d9da4199d1cc067

we detected a 5% exec time slowdown of the 454.calculix 2006 SPEC benchmark with the cmdline options -O2 -march=native -flto on our aarch64 machine (ampere altra).
Comment 1 Filip Kastl 2024-03-21 09:22:24 UTC 
The benchmark runtime returned to its previous values so I'm marking this bug as fixed.