1 files changed, 45 insertions, 0 deletions
diff --git a/compiler/loco/src/IR/Use.cpp b/compiler/loco/src/IR/Use.cpp
new file mode 100644
index 000000000..fed562c65
--- /dev/null
+++ b/compiler/loco/src/IR/Use.cpp
@@ -0,0 +1,45 @@
+/*
+ * 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/Use.h"
+#include "loco/IR/Node.h"
+
+#include <cassert>
+
+namespace loco
+{
+
+void Use::node(Node *node)
+{
+  if (_node != nullptr)
+  {
+    assert(_node->_uses.find(this) != _node->_uses.end());
+    _node->_uses.erase(this);
+    _node = nullptr;
+  }
+
+  assert(_node == nullptr);
+
+  if (node != nullptr)
+  {
+    _node = node;
+    _node->_uses.insert(this);
+  }
+
+  assert(_node == node);
+}
+
+} // namespace loco