auto module = op->getParentOfType<ModuleOp>();
  auto function =
      dyn_cast_or_null<func::FuncOp>(SymbolTable::lookupSymbolIn(module, func));
  FunctionType function_ty = function.getFunctionType();

  for (auto arg_in : llvm::zip(args, function_ty.getInputs())) {
    if (std::get<0>(arg_in).getType() != std::get<1>(arg_in)) {
      // Argument type and input type mismatch.
      return false;
    }