Function _mm_permutex2var_epi32 

pub fn _mm_permutex2var_epi32(a: __m128i, idx: __m128i, b: __m128i) -> __m128i

Available on x86-64 and target feature avx512f and target feature avx512vl only.

Shuffle 32-bit integers in a and b across lanes using the corresponding selector and index in idx, and store the results in dst.

Intel’s documentation