http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39326
--- Comment #46 from Richard Biener <rguenth at gcc dot gnu.org> 2013-03-12 10:46:45 UTC --- Created attachment 29649 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29649 symmetry in reference testing Exploit symmetry in reference testing.