https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109137
--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Richard Biener from comment #8) > Honza, the reporter uses -march=znver1 - why did these backports affect > anything but zen4? (X86_TUNE_AVX256_MOVE_BY_PIECES): Add znver1-3. (X86_TUNE_AVX256_STORE_BY_PIECES): Add znver1-3.