[Bug target/87561] New: [9 Regression] 416.gamess is slower by ~10% starting from r264866 with -Ofast
marxin at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Tue Oct 9 08:34:00 GMT 2018
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87561
Bug ID: 87561
Summary: [9 Regression] 416.gamess is slower by ~10% starting
from r264866 with -Ofast
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: rguenth at gcc dot gnu.org
Blocks: 26163
Target Milestone: ---
It's visible here:
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=25.50.0
or here:
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=24.50.0
It's slower both for native and generic tuning. Visible on Zen, Kaby Lake and
Haswell CPUs.
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)
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