Function _mm256_mask_loadu_ps

#[target_feature(enable = "avx512f", enable = "avx512vl")]
pub const unsafe fn _mm256_mask_loadu_ps(src: __m256, k: __mmask8, mem_addr: *const f32) -> __m256

Load packed single-precision (32-bit) floating-point elements from memory into dst using writemask k (elements are copied from src when the corresponding mask bit is not set). mem_addr does not need to be aligned on any particular boundary.

Intel's documentation