https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126195
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> --- I also think this is bad luck and of course the default of -ffp-contract=fast. IIRC GCC 15 also implements -ffp-contract=standard which should at least make behavior consistent with/without vectorization here.
