Function _mm512_mask_cvtepi8_epi32
#[target_feature(enable = "avx512f")]
pub const fn _mm512_mask_cvtepi8_epi32(src: __m512i, k: __mmask16, a: __m128i) -> __m512iSign extend packed 8-bit integers in a to packed 32-bit integers, and store the results in dst using writemask k (elements are copied from src when the corresponding mask bit is not set).