1 files changed, 65 insertions, 0 deletions
diff --git a/compiler/enco/core/src/IRUtils.cpp b/compiler/enco/core/src/IRUtils.cpp
new file mode 100644
index 000000000..59f6b0dbe
--- /dev/null
+++ b/compiler/enco/core/src/IRUtils.cpp
@@ -0,0 +1,65 @@
+/*
+ * 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.
+ */
+
+#include "IRUtils.h"
+
+#include <cassert>
+
+namespace enco
+{
+
+/**
+ * @brief Substitute all the USE occurrences of an object with another object
+ * @param from  Object to be replaced
+ * @param into  Object to be used instead
+ * NOTE This maybe used when something like -- 'from' will be removed so we need
+ *      to replace object Consumers that use 'from' to 'into'
+ * EXAMPLE
+ *      {
+ *        subst(child, bigone);
+ *        m->entity()->object()->destroy(child);
+ *      }
+ *      This code will change all the Consumers that use 'child' to 'bigone' and
+ *      destroy the 'child' object.
+ */
+void subst(coco::Object *from, coco::Object *into)
+{
+  assert(from != into);
+
+  while (!from->uses()->empty())
+  {
+    auto use = *(from->uses()->begin());
+
+    use->value(into);
+  }
+}
+
+std::vector<coco::Instr *> instr_sequence(coco::Module *m)
+{
+  std::vector<coco::Instr *> res;
+
+  for (auto B = m->block()->head(); B; B = B->next())
+  {
+    for (auto I = B->instr()->head(); I; I = I->next())
+    {
+      res.emplace_back(I);
+    }
+  }
+
+  return res;
+}
+
+} // namespace enco