https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102294
--- Comment #19 from Mateusz Guzik <mjguzik at gmail dot com> --- can you show me what this disassembles to? note that kernel builds disable simd see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119596#c3 for a sample code