https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112697
--- Comment #1 from Filip Kastl <fkastl at suse dot cz> --- Around the same time there was also a 6% slowdown with -Ofast -march=native -g and PGO https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=299.70.0 and an 11% slowdown with -O2 -g -flto=128 and PGO https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=685.70.0