Function _mm_maskz_unpackhi_epi8 

pub fn _mm_maskz_unpackhi_epi8(k: __mmask16, a: __m128i, b: __m128i) -> __m128i

Available on x86-64 and target feature avx512bw and target feature avx512vl only.

Unpack and interleave 8-bit integers from the high half of each 128-bit lane in a and b, and store the results in dst using zeromask k (elements are zeroed out when the corresponding mask bit is not set).

Intel’s documentation