https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70465
--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> --- (In reply to Richard Biener from comment #2) > I wonder why __builtin_atan2 doesn't expand to fpatan with fancy-math-387 and > -ffast-math. It does. You also have to use -mfpmath=387 if your compiler defaults to SSE math.
