[clang] [PAC] Add support for __ptrauth type qualifier (PR #100830)

[Daniil Kovalev via cfe-commits]

================
@@ -5555,6 +5579,27 @@ CGCallee CodeGenFunction::EmitCallee(const Expr *E) {
       return EmitCallee(ICE->getSubExpr());
     }
 
+    // Try to remember the original __ptrauth qualifier for loads of
+    // function pointers.
+    if (ICE->getCastKind() == CK_LValueToRValue) {
+      auto *SubExpr = ICE->getSubExpr();
+      if (auto *PtrType = SubExpr->getType()->getAs<PointerType>()) {
----------------
kovdan01 wrote:

Nit

```suggestion
      if (const auto *PtrType = SubExpr->getType()->getAs<PointerType>()) {
```

https://github.com/llvm/llvm-project/pull/100830