https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117072
--- Comment #12 from Hongtao Liu <liuhongt at gcc dot gnu.org> --- > > So the backend fix should at least add 8 patterns to handle that, in that > case, maybe the middle-end canonicalization would be better. And I will still submit a patch to make the FMA predicates more consistent.