[Bug tree-optimization/103409] [12 Regression] 18% SPEC2017 WRF compile-time regression with -O2 -flto since r12-5228-gb7a23949b0dcc4205fcc2be6b84b91441faa384d

Wed Dec 1 20:49:15 GMT 2021

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103409

--- Comment #13 from hubicka at kam dot mff.cuni.cz ---
> I've fixed the threading slowdown.  Can someone verify and close this PR if all
> the slowdown has been accounted for?  If not, then someone needs to explore any
> slowdown unrelated to the threader.
The plots linked from the PR are live, so they should come back to
original speed (so far they did not).

https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=226.548.8
and
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=287.548.8