https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122643
--- Comment #3 from rnhmjoj at eurofusion dot eu --- It seems to be a classical problem[1], but I wasn't aware of this. Thanks for the clarification. [1]: https://en.wikipedia.org/wiki/Multiply%E2%80%93accumulate_operation#cite_ref-8
