Function _mm256_maskz_compress_ps 

pub fn _mm256_maskz_compress_ps(k: __mmask8, a: __m256) -> __m256

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

Contiguously store the active single-precision (32-bit) floating-point elements in a (those with their respective bit set in zeromask k) to dst, and set the remaining elements to zero.

Intel’s documentation