for (auto *subgraph : *(*model)->subgraphs()) {
    std::string subgraph_name =
        subgraph->name() ? subgraph->name()->str() : "<<unnamed subgraph>>";

    std::cout << '\'' << subgraph_name << "' inputs:\n";
    int i = 0;
    for (auto input : *subgraph->inputs())
      print_buffer(*subgraph, i++, input, nullptr);

    std::cout << '\'' << subgraph_name << "' outputs:\n";
    mlir::Operation *terminator = nullptr;