https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90151
--- Comment #3 from Martin Jambor <jamborm at gcc dot gnu.org> --- In January 2022 I see 9% regression on zen2, 8% regression on zen3 and CascadeLake and 7% on zen4 (compared to gcc 7). I no longer track zen1. LNT largely confirms these observations although it tracks -O2 mostly only with LTO.
