http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55797
--- Comment #9 from Jan Hubicka <hubicka at gcc dot gnu.org> 2013-01-23 14:00:23 UTC --- Just for record, I do not recall any issues with early inliner being run in parallel with into-SSA. As a simple inliner working in topological order, it really does not care about functions not processed yet.