Function _mm_maskz_sub_epi8 

pub fn _mm_maskz_sub_epi8(k: __mmask16, a: __m128i, b: __m128i) -> __m128i

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

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

Intel’s documentation