[llvm-branch-commits] [llvm] [Support] Add SipHash-based 16/64-bit ptrauth stable hash. (PR #93902)

[Ahmed Bougacha via llvm-branch-commits]

ahmedbougacha wrote:

I split out:
- https://github.com/llvm/llvm-project/pull/94393
- https://github.com/llvm/llvm-project/pull/94394
and rebased this on top: we're now left with only the thin wrapper (the 16-bit one only here) and the simple unittests.

https://github.com/llvm/llvm-project/pull/93902