https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107647
Alexander Monakov <amonakov at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |amonakov at gcc dot gnu.org --- Comment #3 from Alexander Monakov <amonakov at gcc dot gnu.org> --- Nice catch, thanks for the report. This is due to g:7d810646d421 The documentation should clarify that patterns correspond to basic fma instructions (without intermediate rounding), and SLP pattern matching should check flag_fp_contract_mode != FP_CONTRACT_OFF.