https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100981
--- Comment #6 from avieira at gcc dot gnu.org --- FYI Tamar asked me to make sure the instructions were being generated. I checked and they were, but not being used as it decides to inline MAIN__ and inlining seems to break (as in not apply/missed oppurtunity) the complex optimization. So for this specific test I'd use -fno-inline, it executes the fcmla instructions that way and it runs fine.