http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56061
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> 2013-01-30 11:21:11 UTC --- (In reply to comment #2) > (In reply to comment #1) > > > I don't think we necessarily want to support this fully... > > Are such bug reports useful, or it's just a nuisance to you, gcc devs? :) They are useful. It should be technically possible to support -O1 vs. -O0, and if not, we have means to forcefully enable -O1 at link-time (which we should do then).