1 files changed, 51 insertions, 0 deletions
diff --git a/tensorflow/core/grappler/optimizers/data/function_rename.cc b/tensorflow/core/grappler/optimizers/data/function_rename.cc
new file mode 100644
index 0000000000..8cf044d1bd
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+++ b/tensorflow/core/grappler/optimizers/data/function_rename.cc
@@ -0,0 +1,51 @@
+/* Copyright 2018 The TensorFlow Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+==============================================================================*/
+
+#include "tensorflow/core/grappler/optimizers/data/function_rename.h"
+
+#include "tensorflow/core/grappler/clusters/cluster.h"
+#include "tensorflow/core/grappler/graph_view.h"
+#include "tensorflow/core/grappler/grappler_item.h"
+#include "tensorflow/core/grappler/op_types.h"
+#include "tensorflow/core/grappler/optimizers/custom_graph_optimizer_registry.h"
+#include "tensorflow/core/grappler/optimizers/data/graph_utils.h"
+#include "tensorflow/core/grappler/utils.h"
+#include "tensorflow/core/platform/protobuf.h"
+
+namespace tensorflow {
+namespace grappler {
+
+Status FunctionRename::Optimize(Cluster* cluster, const GrapplerItem& item,
+                                GraphDef* output) {
+  *output = item.graph;
+  GraphView graph(output);
+  int n = output->mutable_library()->function_size();
+  for (int i = 0; i < n; ++i) {
+    FunctionDef* fn = output->mutable_library()->mutable_function(i);
+    fn->mutable_signature()->set_name(fn->signature().name() + "world");
+  }
+
+  return Status::OK();
+}
+
+void FunctionRename::Feedback(Cluster* cluster, const GrapplerItem& item,
+                              const GraphDef& optimize_output, double result) {
+  // no-op
+}
+
+REGISTER_GRAPH_OPTIMIZER_AS(FunctionRename, "_test_only_function_rename");
+
+}  // end namespace grappler
+}  // end namespace tensorflow