[clang] [PAC] Implement function pointer re-signing (PR #98847)

[Daniil Kovalev via cfe-commits]

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@@ -3126,3 +3137,57 @@ CodeGenFunction::EmitPointerAuthAuth(const CGPointerAuthInfo &PointerAuth,
   return EmitPointerAuthCommon(*this, PointerAuth, Pointer,
                                llvm::Intrinsic::ptrauth_auth);
 }
+
+llvm::Value *CodeGenFunction::EmitPointerAuthSign(QualType pointeeType,
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kovdan01 wrote:

Just in case if I missed smth: why are some PAuth-related member functions of `CodeGenFunction` defined in CGPointerAuth.cpp, and some are defined here in CodeGenFunction.cpp? Could you please describe the logic behind this choice?

https://github.com/llvm/llvm-project/pull/98847