http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55499
--- Comment #1 from Matt Hargett <matt at use dot net> 2012-11-27 22:26:28 UTC --- Created attachment 28800 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28800 test case that devirtualizes correctly, but DCE fails