https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110973
--- Comment #4 from Filip Kastl <fkastl at suse dot cz> --- (In reply to Martin Jambor from comment #3) > There was also a 7.7% regression on zen3 with generic march (these > measurements are without LTO): > > https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=466.120.0 I think this slowdown is caused by the r14-3078-gd9f3ea61fe36e2 commit that Richard mentioned. I measured it on another zen3 machine and got ~7% slowdown.