Function _mm_permutexvar_epi8

#[target_feature(enable = "avx512vbmi", enable = "avx512vl")]
pub fn _mm_permutexvar_epi8(idx: __m128i, a: __m128i) -> __m128i

Shuffle 8-bit integers in a across lanes using the corresponding index in idx, and store the results in dst.

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