https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122247
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Created attachment 62664 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=62664&action=edit Set of 2 patches which improves this and catches this case the first one does a simple clobber<->clobber comparison while the second one has one extra usage walk for phis to allow for a clobber<->clobber comparison.
