http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47000
--- Comment #24 from Jakub Jelinek <jakub at gcc dot gnu.org> 2010-12-20 08:32:10 UTC --- VCE is often very expensive though (often a memory store followed by memory load into a different register, etc.), so 0 unconditionally is IMHO wrong. Perhaps for some TYPE_MODE combinations at most.
