https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117260
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Can you attach the dump file produced by -dump-tree-phiopt4-all ? I might be able to figure out what went wrong. Most of phiopt creates it's own gimple directly (except the match and simplify part). So this is surprising. Unless there is some vop issue happening...