https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116463
--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> --- It doesn't. With r14-10682 there are 2 Found COMPLEX_FMS pattern in SLP tree and 2 Found COMPLEX_ADD_ROT270 pattern in SLP tree messages in fast-math-complex-mls-double.c and 4 Found COMPLEX_FMA pattern in SLP tree and 4 Found COMPLEX_FMS_CONJ pattern in SLP tree With r14-10683 the 4 Found COMPLEX_FMA pattern in SLP tree are gone, the rest remains the same. With r14+10683 + backported r15-3128 the 4 Found COMPLEX_FMA pattern in SLP tree are back, but the 2 COMPLEX_FMS and 2 COMPLEX_ADD_ROT270 messages are gone.