http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53511
--- Comment #9 from Kazumoto Kojima <kkojima at gcc dot gnu.org> 2012-06-05 22:35:28 UTC --- (In reply to comment #7) > Making -mfused-madd a no-op with special handling will only differ in the (*) > marked case. Is this what you had in mind? Yes. -mfused-madd is for a micro optimization after all. It would be tolerable even if it can't generate fmac insns in the case like (*). OTOH deleting that option surprises the old programs which use -mfused-madd. I have no strong opinion, though. On second thought, -mfused-madd would be relatively rare in real use.