FunctionType func_type = func.getFunctionType();
    int num_inputs = func_type.getNumInputs();
    int num_results = func_type.getNumResults();

    // For each argument type in function's arguments, change it to uranked
    // tensor type if it's a variant type.
    SmallVector<Type, 8> updated_argument_types;
    updated_argument_types.reserve(num_inputs);
    UpdateTensorListTypes<mlir::OperandRange>(