Indeed, and your comment led me to find additional issues with my port of _mm_madd_epi16. I agree it would perhaps be possible to find better semantics for SIM

Indeed, and your comment led me to find additional issues with my port of _mm_madd_epi16. I agree it would perhaps be possible to find better semantics for SIMD that kinda gloss over all the differences. That would be cleaner but require a lot of names. Well I suppose that's what Highway does, isn't it?