Function _mm512_maskz_max_epi8 

pub fn _mm512_maskz_max_epi8(k: __mmask64, a: __m512i, b: __m512i) -> __m512i

Available on x86-64 and target feature avx512bw only.

Compare packed signed 8-bit integers in a and b, and store packed maximum values in dst using zeromask k (elements are zeroed out when the corresponding mask bit is not set).

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