Function _mm256_mask_i64gather_epi64
#[target_feature(enable = "avx2")]
pub unsafe fn _mm256_mask_i64gather_epi64(src: __m256i, slice: *const i64, offsets: __m256i, mask: __m256i, SCALE: i32) -> __m256iReturns values from slice at offsets determined by offsets * scale,
where
scale should be 1, 2, 4 or 8. If mask is set, load the value from src in
that position instead.