}
    return false;
  }

  // Returns the producer op code of the specified tensor_idx.
  bool GetProducerOpCode(const Model* model, uint32_t subgraph_idx,
                         uint32_t tensor_idx, BuiltinOperator* op_code) {
    const auto subgraph = model->subgraphs()->Get(subgraph_idx);
    for (size_t op_idx = 0; op_idx < subgraph->operators()->size(); ++op_idx) {
      const auto op = subgraph->operators()->Get(op_idx);

// ones, but not by much. Moreover, while custom operators accept an opaque
// object containing configuration parameters, builtins have a predetermined
// set of acceptable options.
// LINT.IfChange
enum BuiltinOperator : int32 {
  ADD = 0,
  AVERAGE_POOL_2D = 1,
  CONCATENATION = 2,
  CONV_2D = 3,
  DEPTHWISE_CONV_2D = 4,
  DEPTH_TO_SPACE = 5,
  DEQUANTIZE = 6,
  EMBEDDING_LOOKUP = 7,
  FLOOR = 8,

    return "LSTM";
  }
  return name.upper();
}

// Emits a function that returns built-in operator code for each TFLite op.
//
// The signature of the function is:
//
//   std::optional<tflite::BuiltinOperator>
//   mlir::GetBuiltinOpCode(mlir::Operation* op);
//
// TODO(hinsu): Consider converting this to a static constant associative
// container instead of a series of if conditions, if required.

std::string GetMlirOpNameFromOpCode(const ::tflite::OperatorCodeT &op_code);

// Returns the builtin op code for the given MLIR operation on success; emits
// error and returns std::nullopt on failure.
std::optional<tflite::BuiltinOperator> GetBuiltinOpCode(Operation *mlir_op);

// Packs the given MLIR operation into a TFLite FlatBuffer operator object.
// Returns the FlatBuffer offset for the operator on success; emits error and

// ones, but not by much. Moreover, while custom operators accept an opaque
// object containing configuration parameters, builtins have a predetermined
// set of acceptable options.
// LINT.IfChange
enum BuiltinOperator : int32 {
  ADD = 0,
  AVERAGE_POOL_2D = 1,
  CONCATENATION = 2,
  CONV_2D = 3,
  DEPTHWISE_CONV_2D = 4,
  DEPTH_TO_SPACE = 5,
  DEQUANTIZE = 6,
  EMBEDDING_LOOKUP = 7,
  FLOOR = 8,

// ones, but not by much. Moreover, while custom operators accept an opaque
// object containing configuration parameters, builtins have a predetermined
// set of acceptable options.
// LINT.IfChange
enum BuiltinOperator : byte {
  ADD = 0,
  AVERAGE_POOL_2D = 1,
  CONCATENATION = 2,
  CONV_2D = 3,
  DEPTHWISE_CONV_2D = 4,
  DEPTH_TO_SPACE = 5,
  DEQUANTIZE = 6,
  EMBEDDING_LOOKUP = 7,
  FLOOR = 8,