Source of AVX-512

[[AVX]] > [[AVX-512]]

- https://www.intel.co.jp/content/www/jp/ja/architecture-and-technology/avx-512-overview.html

- https://github.com/rust-lang/stdarch/issues/310
--  https://gist.github.com/alexcrichton/3281adb58af7f465cebee49759ae3164