Function _mm512_mask_srl_epi64
#[target_feature(enable = "avx512f")]
pub fn _mm512_mask_srl_epi64(src: __m512i, k: __mmask8, a: __m512i, count: __m128i) -> __m512iShift packed 64-bit integers in a right by count while shifting in zeros, and store the results in dst using writemask k (elements are copied from src when the corresponding mask bit is not set).