https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102997
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- Btw, IIRC calculix train data and ref data do not match up wrt the hottest loops, so not sure whether any regression here is considered important. Maybe the profile is now preserved better. I can't reproduce any slowdown w/o PGO.