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diff --git a/compiler/loco/include/loco/IR/TensorShape.h b/compiler/loco/include/loco/IR/TensorShape.h
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+++ b/compiler/loco/include/loco/IR/TensorShape.h
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+/*
+ * Copyright (c) 2019 Samsung Electronics Co., Ltd. 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 __LOCO_IR_TENSOR_SHAPE_H__
+#define __LOCO_IR_TENSOR_SHAPE_H__
+
+#include "loco/IR/Dimension.h"
+
+#include <initializer_list>
+#include <vector>
+
+namespace loco
+{
+
+class TensorShape
+{
+public:
+  TensorShape() = default;
+  TensorShape(std::initializer_list<Dimension> dims) : _dims(dims.begin(), dims.end()) {}
+
+public:
+  uint32_t rank(void) const { return _dims.size(); }
+  void rank(uint32_t r) { _dims.resize(r); }
+
+  const Dimension &dim(uint32_t axis) const { return _dims.at(axis); }
+  Dimension &dim(uint32_t axis) { return _dims.at(axis); }
+
+private:
+  std::vector<Dimension> _dims;
+};
+
+/**
+ * @brief Return the number of elements in a tensor of given shape
+ *
+ * NOTE 1.
+ *
+ *  "volume" returns 1 if the rank is 0.
+ *
+ * NOTE 2.
+ *
+ *  "caller" SHOULD pass a valid shape that has no unknown dimension.
+ *  - The behavior of "volume" on invalid is undefined.
+ *
+ */
+uint32_t element_count(const loco::TensorShape *tensor_shape);
+
+} // namespace loco
+
+#endif // __LOCO_IR_TENSOR_SHAPE_H__