Function _mm_maskz_moveldup_ps 

pub fn _mm_maskz_moveldup_ps(k: __mmask8, a: __m128) -> __m128

Available on x86-64 and target feature avx512f and target feature avx512vl only.

Duplicate even-indexed single-precision (32-bit) floating-point elements from 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