https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81877
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> --- Created attachment 41998 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41998&action=edit patch for the missed optimization Patch I am testing, fixing the missed optimization (and this testcase as a side-effect) but not the underlying issue.