[llvm-branch-commits] [clang] [clang] Implement function pointer signing and authenticated function calls (PR #93906)

[Daniil Kovalev via llvm-branch-commits]

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@@ -938,6 +939,32 @@ class CodeGenModule : public CodeGenTypeCache {
   // Return the function body address of the given function.
   llvm::Constant *GetFunctionStart(const ValueDecl *Decl);
 
+  /// Return a function pointer for a reference to the given function.
+  /// This correctly handles weak references, but does not apply a
+  /// pointer signature.
+  llvm::Constant *getRawFunctionPointer(GlobalDecl GD,
+                                        llvm::Type *Ty = nullptr);
+
+  /// Return the ABI-correct function pointer value for a reference
+  /// to the given function.  This will apply a pointer signature if
+  /// necessary, caching the result for the given function.
+  llvm::Constant *getFunctionPointer(GlobalDecl GD, llvm::Type *Ty = nullptr);
+
+  /// Return the ABI-correct function pointer value for a reference
+  /// to the given function.  This will apply a pointer signature if
+  /// necessary, but will only cache the result if \p FD is passed.
+  llvm::Constant *getFunctionPointer(llvm::Constant *Pointer,
+                                     QualType FunctionType,
+                                     GlobalDecl GD = GlobalDecl());
+
+  CGPointerAuthInfo getFunctionPointerAuthInfo(QualType T);
+
+  llvm::Constant *getConstantSignedPointer(llvm::Constant *Pointer,
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kovdan01 wrote:

This member function declaration seems to be unused and not corresponding to any definition, so it can probably be removed.

https://github.com/llvm/llvm-project/pull/93906