http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53024
--- Comment #6 from Marc Glisse <glisse at gcc dot gnu.org> 2012-11-16 20:03:05 UTC --- (In reply to comment #5) > I don't think we can ever support vector size of non power 2 size. I don't think we *will* ever support them (too much work, too little benefit), but I am not sure why we couldn't in principle.