Function _mm512_mask_movedup_pd
#[target_feature(enable = "avx512f")]
pub const fn _mm512_mask_movedup_pd(src: __m512d, k: __mmask8, a: __m512d) -> __m512dDuplicate even-indexed double-precision (64-bit) floating-point elements from a, and store the results in dst using writemask k (elements are copied from src when the corresponding mask bit is not set).