Function safe_arch::load_m256d

#[must_use]pub fn load_m256d(a: &m256d) -> m256d

This is supported with target feature avx only.

Load data from memory into a register.

let a = m256d::from([8.0, 17.0, 6.0, 5.0]);
let b = load_m256d(&a);
assert_eq!(a.to_array(), b.to_array());