https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88547
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Created attachment 45264 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45264&action=edit gcc9-pr88547-1.patch Untested patch to improve the avx512* sse_movcc.
