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

[aldyh at gcc dot gnu.org via Gcc-bugs]

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

--- Comment #12 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
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.