https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122686
--- Comment #24 from Filip Kastl <pheeck at gcc dot gnu.org> --- (In reply to Filip Kastl from comment #23) > I've also observed this hang with -Ofast -march=znver4 -flto, btw. Ah sorry. That was actually with -Ofast -march=x86-64-v3 -flto
