Function _mm256_maskz_compress_epi8 

pub fn _mm256_maskz_compress_epi8(k: __mmask32, a: __m256i) -> __m256i

Available on x86-64 and target feature avx512vbmi2 and target feature avx512vl only.

Contiguously store the active 8-bit integers in a (those with their respective bit set in zeromask k) to dst, and set the remaining elements to zero.

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