FunctionLibraryRuntime* lib_runtime =
      pflr->GetFLR(ProcessFunctionLibraryRuntime::kDefaultFLRDevice);
  std::vector<bool> compile_time_const_nodes(graph_->num_node_ids(), false);
  TF_RETURN_IF_ERROR(BackwardsConstAnalysis(
      *graph_, /*compile_time_const_arg_indices=*/nullptr,
      &compile_time_const_nodes, lib_runtime));
  // Iterate over nodes in sorted order so that compiler fuel is deterministic.

        std::vector<bool> const_args(num_args);
        TF_RETURN_IF_ERROR(
            BackwardsConstAnalysis(**subgraph, &const_args,
                                   /*compile_time_const_nodes=*/nullptr, flr));

        DataTypeVector arg_types(num_args);
        TF_RETURN_IF_ERROR(GetArgTypes(**subgraph, &arg_types));

        // Compute a permutation of the arguments such that the constant