[clang] [CIR] Upstream support for variable length arrays (PR #163297)

[Amr Hesham via cfe-commits]

================
@@ -696,6 +728,16 @@ struct DestroyObject final : EHScopeStack::Cleanup {
     cgf.emitDestroy(addr, type, destroyer);
   }
 };
+
+struct CallStackRestore final : EHScopeStack::Cleanup {
+  Address stack;
+  CallStackRestore(Address stack) : stack(stack) {}
+  void emit(CIRGenFunction &cgf) override {
+    auto loc = stack.getPointer().getLoc();
----------------
AmrDeveloper wrote:

```suggestion
    mlir::Location loc = stack.getPointer().getLoc();
```

https://github.com/llvm/llvm-project/pull/163297