https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91204
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Yes. But #c3 does the same thing in the middle-end. Though, if there is a backend pattern, it will be used also by the vectorizer or taken into account by generic vector lowering. So maybe we want both?
