https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79460
--- Comment #12 from Segher Boessenkool <segher at gcc dot gnu.org> --- (In reply to Jakub Jelinek from comment #7) > Shouldn't it (both in the vectorizer and in scev) be dependent not just on > flag_fp_contract_mode but also on some -ffast-math subflag? Doing several > additions can e.g. raise different exceptions and have different roundings > from doing it as just one multiply. This needs -fassociative-math I think?
