https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109137
--- Comment #10 from rguenther at suse dot de <rguenther at suse dot de> --- On Wed, 15 Mar 2023, pinskia at gcc dot gnu.org wrote: > 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. But Zen1 uses a split AVX pipe so I'm not sure that's the best idea? Anway, I'd revert this change completely on the branch and only keep the znver4 effects.
