Function _mm256_mmask_i64gather_pd

#[target_feature(enable = "avx512f", enable = "avx512vl")]
pub unsafe fn _mm256_mmask_i64gather_pd(src: __m256d, k: __mmask8, vindex: __m256i, base_addr: *const f64, SCALE: i32) -> __m256d

Loads 4 double-precision (64-bit) floating-point elements from memory starting at location base_addr at packed 32-bit integer indices stored in vindex scaled by scale using writemask k (elements are copied from src when the corresponding mask bit is not set).

Intel's documentation