Function `_mm256_maskz_compress_epi8`

#[target_feature(enable = "avx512vbmi2", enable = "avx512vl")]
pub fn _mm256_maskz_compress_epi8(k: __mmask32, a: __m256i) -> __m256i

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.