pub fn _mm256_permutex2var_epi16(
    a: __m256i,
    idx: __m256i,
    b: __m256i,
) -> __m256iAvailable on x86-64 and target feature 
avx512bw and target feature avx512vl only.Expand description
Shuffle 16-bit integers in a and b across lanes using the corresponding selector and index in idx, and store the results in dst.