Dot product

Single precision floating point.
System V AMD64 ABI convention.


sses_dot:
    movaps xmm0, [rdi]
    mulps xmm0, [rsi]
    haddps xmm0, xmm0
    haddps xmm0, xmm0
    ret

>>20
This. And then you need to write your own versions of operator *, operator +, map and foldr that are SSE-aware and can detect when the operands are SSE vectors.

Also, to the FIOC faggot >>16, do you honestly think that CPython, IronPython, or any other Python will generate SSE instructions for those functions? They do not. Instead you will end up with a bunch of shitty FIOC table lookups to infer types at runtime, and scalar code hidden behind multiple layers of function invocations.

Fucking faggots the lot of you.