https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111023
--- Comment #4 from Uroš Bizjak <ubizjak at gmail dot com> --- Created attachment 55753 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55753&action=edit Proposed patch Patch that implements zero/sign extend of <= 64byte vector modes to a wider vector mode also for SSE2.