void MutateNodeDefs(tensorflow::GraphDef& graph_def, FuncT&& func) {
  for (tensorflow::NodeDef& node_def : *graph_def.mutable_node()) {
    func(node_def);
  }

  for (tensorflow::FunctionDef& function_def :
       *graph_def.mutable_library()->mutable_function()) {
    for (tensorflow::NodeDef& node_def : *function_def.mutable_node_def()) {
      func(node_def);
    }
  }
}

  MutateNodeDefs(graph_def,
                 [](NodeDef& node_def) { node_def.set_name("bar"); });

  ASSERT_THAT(graph_def.library().function(), SizeIs(1));
  ASSERT_THAT(graph_def.library().function()[0].node_def(), SizeIs(1));
  EXPECT_THAT(graph_def.library().function()[0].node_def()[0].name(),
              StrEq("bar"));
}

}  // namespace

          }
        }
      }
    }
  }

  // Upgrade nodes in the GraphDef.
  for (auto& node_def : *gdef.mutable_node()) {
    const OpDef* op_def = nullptr;
    TF_RETURN_IF_ERROR(flib_def->LookUpOpDef(node_def.op(), &op_def));
    // TODO(b/197144710): improve the shared_name attr, each op may use the
    // shared_name differently.

      }
    }
  }
  return found_dtype && found_value;
}

bool IsAddN(const tensorflow::NodeDef& node_def, int n) {
  if (node_def.op() != "AddN" || node_def.name() != "add" ||
      node_def.input_size() != n) {
    return false;
  }
  bool found_t = false;
  bool found_n = false;
  for (const auto& attr : node_def.attr()) {
    if (attr.first == "T") {
      if (attr.second.type() == tensorflow::DT_INT32) {

                                       node_def->mutable_attr()));

  return node_def;
}

absl::StatusOr<std::unique_ptr<NodeDef>> Exporter::GetReturnNode(
    FuncOp function, Value operand, unsigned index, llvm::StringRef name) {
  auto node_def = std::make_unique<NodeDef>();
  if (!name.empty())
    node_def->set_name(std::string(ParseTensorName(name.str()).node()));
  else

                                       node_def->mutable_attr()));

  return node_def;
}

absl::StatusOr<std::unique_ptr<NodeDef>> Exporter::GetReturnNode(
    FuncOp function, Value operand, unsigned index, llvm::StringRef name) {
  auto node_def = std::make_unique<NodeDef>();
  if (!name.empty())
    node_def->set_name(std::string(ParseTensorName(name.str()).node()));
  else

  return CanCreateXlaKernel(props->node_def) &&
         !XlaOpRegistry::IsCompilationDevice(flr.device()->device_type());
}

static Status CreateXlaKernel(FunctionLibraryRuntime* flr,
                              const NodeDef& node_def,
                              std::unique_ptr<OpKernel>* kernel) {
  if (!CanCreateXlaKernel(node_def)) {
    return errors::Internal("Invalid node: ", node_def.ShortDebugString());
  }

bool IsPlaceholder(const tensorflow::NodeDef& node_def);

bool IsScalarConst(const tensorflow::NodeDef& node_def, int v);

bool IsAddN(const tensorflow::NodeDef& node_def, int n);

bool IsNeg(const tensorflow::NodeDef& node_def, const string& input);

bool GetGraphDef(TF_Graph* graph, tensorflow::GraphDef* graph_def);

bool GetNodeDef(TF_Operation* oper, tensorflow::NodeDef* node_def);

#include "tensorflow/core/framework/node_def.pb.h"
#include "tensorflow/core/framework/node_properties.h"
#include "tensorflow/core/lib/core/status.h"

namespace tensorflow {

class FunctionLibraryRuntime;
class OpKernel;

class XlaKernelCreator : public CustomKernelCreator {
 public:
  // Given a NodeDef 'node_def' and the function library runtime 'flr', returns

absl::StatusOr<FunctionDef> TFRDecomposeContext::ExpandNode(
    const NodeDef& node_def, StringPiece func_name) {
  const OpDef* op_def;
  TF_RETURN_IF_ERROR(OpRegistry::Global()->LookUpOpDef(node_def.op(), &op_def));
  DataTypeVector input_dtys, output_dtys;
  TF_RETURN_IF_ERROR(InputTypesForNode(node_def, *op_def, &input_dtys));
  TF_RETURN_IF_ERROR(OutputTypesForNode(node_def, *op_def, &output_dtys));