https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78102
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Or, if we are ok that for SSE4.1 (and not SSE4.2) the vectorizer just won't be able to use those V2DI equality (and gt?) comparisons, then revert part of the r217608 change and fold the builtin into generic vector comparison if SSE4.2+.
