// CHECK: }

  // CHECK: @serving_default
  func.func @serving_default(%arg0: tensor<1x1024xf32> {tf_saved_model.index_path = ["input_tensor"]}) -> (tensor<1x1024xf32> {tf_saved_model.index_path = ["output"]}) attributes {tf.entry_function = {control_outputs = "", inputs = "serving_default_input_tensor:0", outputs = "PartitionedCall:0"}, tf_saved_model.exported_names = ["serving_default"]} {

  func.func @serving_default(%arg0: tensor<1x4xf32> {tf_saved_model.index_path = ["x"]}) -> (tensor<1x3xf32> {tf_saved_model.index_path = ["output"]}) attributes {tf.entry_function = {control_outputs = "", inputs = "serving_default_x:0", outputs = "PartitionedCall:0"}, tf_saved_model.exported_names = ["serving_default"]} {
    %cst = "tf.Const"() <{value = dense<1.000000e+01> : tensor<f32>}> {device = ""} : () -> tensor<f32>

  TF_SignatureDefFunction* serving_default =
      TF_GetSavedModelSignatureDefFunction(saved_model, "serving_default",
                                           status);
  EXPECT_EQ(TF_GetCode(status), TF_OK) << TF_Message(status);

  TF_SignatureDefFunctionMetadata* metadata =
      TF_SignatureDefFunctionGetMetadata(serving_default);

  const TF_SignatureDefParamList* args =

  func.func @serving_default(%arg0: tensor<1x4xf32> {tf_saved_model.index_path = ["x"]}) -> (tensor<1x3xf32> {tf_saved_model.index_path = ["output"]}) attributes {tf.entry_function = {control_outputs = "", inputs = "serving_default_x:0", outputs = "PartitionedCall:0"}, tf_saved_model.exported_names = ["serving_default"]} {

      self, output_saved_model_path: str
  ) -> str:
    """Extracts the first XlaCallModule op from output saved model to string."""
    root = load.load(output_saved_model_path)
    tf_graph_def = root.signatures['serving_default'].graph.as_graph_def()
    for function in tf_graph_def.library.function:
      for node_def in function.node_def:
        if node_def.op == 'XlaCallModule':
          with ir.Context() as context:

// NOLINTNEXTLINE
opt<std::string> exported_model_signatures(
    "exported_model_signatures", llvm::cl::desc("model signature names"),
    llvm::cl::Optional, llvm::cl::init("serving_default"));

namespace mlir {
namespace odml {

absl::StatusOr<OwningOpRef<mlir::ModuleOp>> ImportSavedModelOrMLIR(
    const std::string& input_path, MLIRContext* context,
    llvm::SourceMgr* source_mgr,