[llvm-branch-commits] [clang] [clang] Define ptrauth_sign_constant builtin. (PR #93904)

[Eli Friedman via llvm-branch-commits]

efriedma-quic wrote:

Why do we want a separate builtin, as opposed to just constant-folding calls to __builtin_ptrauth_sign?

https://github.com/llvm/llvm-project/pull/93904