1 files changed, 76 insertions, 0 deletions
diff --git a/compiler/enco/core/src/CodeIndex.h b/compiler/enco/core/src/CodeIndex.h
new file mode 100644
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+++ b/compiler/enco/core/src/CodeIndex.h
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2018 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 __CODE_INDEX_H__
+#define __CODE_INDEX_H__
+
+#include <coco/IR/Block.h>
+#include <coco/IR/Instr.h>
+
+/**
+ * @brief A CodeIndex denotes the index of instruction inside the whole module
+ */
+class CodeIndex
+{
+public:
+  CodeIndex() = default;
+
+public:
+  CodeIndex(const coco::BlockIndex &blk_ind, const coco::InstrIndex &ins_ind)
+      : _blk_ind{blk_ind}, _ins_ind{ins_ind}
+  {
+  }
+
+public:
+  const coco::BlockIndex &block(void) const { return _blk_ind; }
+  const coco::InstrIndex &instr(void) const { return _ins_ind; }
+
+private:
+  coco::BlockIndex _blk_ind;
+  coco::InstrIndex _ins_ind;
+};
+
+static inline coco::BlockIndex block_index(const coco::Block *blk)
+{
+  if (blk == nullptr)
+  {
+    return coco::BlockIndex{};
+  }
+
+  return blk->index();
+}
+
+static inline CodeIndex code_index(const coco::Instr *ins)
+{
+  return CodeIndex{block_index(ins->parent()), ins->index()};
+}
+
+static inline bool operator<(const CodeIndex &lhs, const CodeIndex &rhs)
+{
+  if (lhs.block() < rhs.block())
+  {
+    return true;
+  }
+
+  if (lhs.block().value() > rhs.block().value())
+  {
+    return false;
+  }
+
+  return lhs.instr() < rhs.instr();
+}
+
+#endif // __CODE_INDEX_H__