https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69820
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Created attachment 37694 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37694&action=edit gcc6-pr69820.patch As for the ICE, the following patch works for me. VI_512 iterator is only used in the vcond* patterns, therefore it is desirable to change them all this way.