arch:: x86:: _mm_clmulepi64_si128
pub unsafe fn _mm_clmulepi64_si128(a: __m128i, b: __m128i, imm8: i32) -> __m128i
This is supported on x86 and target feature
Performs a carry-less multiplication of two 64-bit polynomials over the finite field GF(2^k).
The immediate byte is used for determining which halves of
should be used. Immediate bits other than 0 and 4 are ignored.