This link is dead: https://github.com/rust-lang/stdarch/blob/f4528dd6e85d97bb802240d7cd048b6e1bf72540/crates/core_arch/src/x86/gfni.rs#L8 Currently there is a [working alternative](https://www.intel.com/content/www/us/en/content-details/782156/intel-64-and-ia-32-architectures-software-developer-s-manual-combined-volumes-2a-2b-2c-and-2d-instruction-set-reference-a-z.html).
