1 files changed, 78 insertions, 0 deletions
diff --git a/compiler/coco/core/include/coco/IR/Block.h b/compiler/coco/core/include/coco/IR/Block.h
new file mode 100644
index 000000000..1bb3f47c7
--- /dev/null
+++ b/compiler/coco/core/include/coco/IR/Block.h
@@ -0,0 +1,78 @@
+/*
+ * 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 __COCO_IR_BLOCK_H__
+#define __COCO_IR_BLOCK_H__
+
+#include "coco/IR/Module.forward.h"
+#include "coco/IR/Block.forward.h"
+#include "coco/IR/BlockIndex.h"
+#include "coco/IR/Instr.h"
+#include "coco/IR/Entity.h"
+
+#include "coco/ADT/DLinkedList.h"
+
+namespace coco
+{
+
+using BlockList = DLinkedList<Block, Module>::Head;
+
+/**
+ * @brief A unit of (grouped) instructions
+ *
+ * Block allows backend to manage a set of instructions as one unit, which is useful for H/W that
+ * has a restriction on code size
+ */
+class Block final : public DLinkedList<Block, Module>::Node, public Entity
+{
+public:
+  friend void DLinkedList<Block, Module>::joined(Module *, Block *);
+  friend void DLinkedList<Block, Module>::leaving(Module *, Block *);
+
+public:
+  Block() : _instr{this}
+  {
+    // DO NOTHING
+  }
+
+public:
+  Block(const Block &) = delete;
+  Block(Block &&) = delete;
+
+public:
+  ~Block()
+  {
+    if (parent())
+    {
+      detach();
+    }
+  }
+
+public:
+  InstrList *instr(void) { return &_instr; }
+  const InstrList *instr(void) const { return &_instr; }
+
+public:
+  const BlockIndex &index(void) const { return _index; }
+
+private:
+  BlockIndex _index;
+  DLinkedList<Instr, Block>::Head _instr;
+};
+
+} // namespace coco
+
+#endif // __COCO_IR_BLOCK_H__