https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85103
--- Comment #3 from Pat Haugen <pthaugen at gcc dot gnu.org> --- (In reply to Jan Hubicka from comment #1) > Pat, can you try to figure out what value of min-speedup is neeed to recover > from this regression? Using r257582, either of the following options restores the behavior of not inlining the mainGtU call and eliminates the performance regression. --param inline-min-speedup=18 --param max-inline-insns-auto=24