https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69671
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> --- BTW, can you see if the cse.c one-liner has significant effect on say SPEC2k6 with -mavx512* options? If yes, then either we need some help from the RA to deal with this, or perhaps the one-liner should be reverted for GCC 6.