https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112697
Bug ID: 112697
Summary: [14 Regression] 30-40% exec time regression of
433.milc on zen2
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: missed-optimization, needs-bisection
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: fkastl at suse dot cz
Target Milestone: ---
Host: x86_64-linux
Target: x86_64-linux
Between commits
g:0c305f3dec9a992dd775a3b9607b7b1e8c051859
g:7f974c5fd4f59a9d8dd20c49a0e2909cb290f4b4
there's a 30-40% slowdown of the 433.milc 2006SPEC benchmark as seen here:
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=292.70.0
It's 40% here and I also measured the slowdown on another zen2 machine where
the difference was 30%.
Compile options:
-g -O2 -flto=128
