http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45325
--- Comment #14 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-01-28 15:19:23 UTC --- The test is invalid on i[345]86-*-* without also enabling -msse. A fix is to add /* { dg-options "-msse" { target i[345]86-*-* } } */ probably also for x86_64 with -m32. Or simply unconditionally as it is a x86 specific test anyway. A fix for the bug would instead issue a diagnostic.