http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50482
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-09-22 17:02:14 UTC --- Created attachment 25342 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25342 gcc47-all-ones-cst.patch Patch to optimize vector x < y ? -1 : z and vector and/ior/xor with -1 operand.