--- /dev/null
+/*
+ * 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_CANONICAL_DIALECT_H__
+#define __LOCO_IR_CANONICAL_DIALECT_H__
+
+#include "loco/IR/Dialect.h"
+
+namespace loco
+{
+
+/**
+ * @brief A singleton for Canonical Dialect
+ *
+ * CanonicalDialect serves as an in-memory unique identifier.
+ */
+class CanonicalDialect final : public Dialect
+{
+private:
+ CanonicalDialect() = default;
+
+public:
+ CanonicalDialect(const CanonicalDialect &) = delete;
+ CanonicalDialect(CanonicalDialect &&) = delete;
+
+public:
+ static Dialect *get(void);
+};
+
+} // namespace loco
+
+#endif // __LOCO_IR_CANONICAL_DIALECT_H__
--- /dev/null
+/*
+ * 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.
+ */
+
+#include "loco/IR/CanonicalDialect.h"
+
+namespace loco
+{
+
+Dialect *CanonicalDialect::get(void)
+{
+ static CanonicalDialect d;
+ return &d;
+}
+
+} // namespace loco
--- /dev/null
+/*
+ * 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.
+ */
+
+#include "loco/IR/CanonicalDialect.h"
+
+#include <gtest/gtest.h>
+
+TEST(CanonicalDialectTest, get)
+{
+ auto d = loco::CanonicalDialect::get();
+
+ // get() SHOULD return a valid(non-null) pointer
+ ASSERT_NE(d, nullptr);
+ // The return value SHOULD be stable across multiple invocations
+ ASSERT_EQ(d, loco::CanonicalDialect::get());
+}