https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120069
--- Comment #11 from Filip Kastl <pheeck at gcc dot gnu.org> --- I've also just bisected this 2006 lbm -Ofast -march=native -flto PGO AMD Zen3 16% slowdown to r16-270-ga0a64aa5da0af5: https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=474.240.0