https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104122
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
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Summary|On Zen3, 510.parest_r |On Zen3, 510.parest_r
|(built with -Ofast) is |(built with -Ofast) is
|faster with generic than |faster with generic than
|with native tuning |with native ISA
Keywords| |missed-optimization
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
It's ISA, not tuning. I suppose -march=native -mtune=generic is still bad? I
wonder if you tried the obvious -mprefer-avx128?
