http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49452
--- Comment #11 from Janis Johnson <janis at gcc dot gnu.org> 2011-06-27 18:05:41 UTC --- I have confirmed that the -Os failures began with r175063 and that the tests pass for several revision before that and pass for several after, so it's unlikely to be an intermittent failure. If it would help I can send dump files for r175063 and the one just before that.