There are some ARMv8 instructions that LLVM knows about, I think which are not presently exposed through
core::arch::aarch64. I'd like to add them, but it seems like I'd probably need to define a new
target_feature (the ARMv8 Cryptography Extensions), and I'm not sure how one gets started on a task like that.
Can anyone point me in the right direction?
The instructions in question are