http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50310
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-09-07 08:29:25 UTC --- You are right, with -O3 -fno-trapping-math already r151206 ICEs (haven't bisected it down though). If the vcond* condition on all targets just returned 0 for codes it doesn't support, the vectorizer would need to create dummy RTL arguments in expand_vec_cond_expr_p. But perhaps that's still better than adding yet another iterator to vcond, then it would iterate on 3 iterators...