https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98172
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- Hmm, but rep movsb is only fast starting with Zen3 IIRC.
rguenth at gcc dot gnu.org via Gcc-bugs Mon, 07 Dec 2020 06:08:20 -0800
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98172
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- Hmm, but rep movsb is only fast starting with Zen3 IIRC.