https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79733
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Note, emit_move_via_integer isn't called for me at all. Have you configured gcc with some special --with-arch/--with-tune or similar? Perhaps full configure arguments might be interesting (and if any of those is native, also details on what exact CPU it is).