[clang] [CIR] Update ComplexRealOp to work on scalar type (PR #161080)

[Henrich Lauko via cfe-commits]

================
@@ -2302,14 +2302,23 @@ OpFoldResult cir::ComplexCreateOp::fold(FoldAdaptor adaptor) {
 //===----------------------------------------------------------------------===//
 
 LogicalResult cir::ComplexRealOp::verify() {
-  if (getType() != getOperand().getType().getElementType()) {
+  mlir::Type operandTy = getOperand().getType();
+  if (mlir::isa<cir::ComplexType>(operandTy)) {
+    operandTy = mlir::cast<cir::ComplexType>(operandTy).getElementType();
+  }
----------------
xlauko wrote:

```suggestion
  if (auto complexOperandTy = mlir::dyn_cast<cir::ComplexType>(operandTy)) {
    operandTy = complexOperandTy.getElementType();
  }
```

https://github.com/llvm/llvm-project/pull/161080