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diff --git a/tensorflow/compiler/xla/service/name_uniquer.h b/tensorflow/compiler/xla/service/name_uniquer.h
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+/* Copyright 2017 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.
+==============================================================================*/
+
+#ifndef TENSORFLOW_COMPILER_XLA_SERVICE_NAME_UNIQUER_H_
+#define TENSORFLOW_COMPILER_XLA_SERVICE_NAME_UNIQUER_H_
+
+#include <string>
+#include <unordered_map>
+
+#include "tensorflow/compiler/xla/types.h"
+#include "tensorflow/core/lib/core/stringpiece.h"
+#include "tensorflow/core/platform/macros.h"
+
+namespace xla {
+
+// Simple stateful class that helps generate "unique" names. To use it, simply
+// call GetUniqueName as many times as needed. The names returned by
+// GetUniqueName are guaranteed to be distinct for this instance of the class.
+class NameUniquer {
+ public:
+  explicit NameUniquer(const string& separator = "__")
+      : separator_(separator) {}
+
+  // Get a unique name in a string, with an optional prefix for convenience.
+  string GetUniqueName(tensorflow::StringPiece prefix = "");
+
+ private:
+  // The string to use to separate the prefix of the name from the uniquing
+  // integer value.
+  string separator_;
+
+  // Map from name prefix to the number of names generated using that prefix
+  // so far.
+  std::unordered_map<string, int> generated_names_;
+
+  TF_DISALLOW_COPY_AND_ASSIGN(NameUniquer);
+};
+
+}  // namespace xla
+
+#endif  // TENSORFLOW_COMPILER_XLA_SERVICE_NAME_UNIQUER_H_