From 4b9b6b267b154db2ec3f3d2e42dce942eafa2d97 Mon Sep 17 00:00:00 2001
From: =?utf8?q?=EB=B0=95=EC=A2=85=ED=98=84/=EB=8F=99=EC=9E=91=EC=A0=9C?=
 =?utf8?q?=EC=96=B4Lab=28SR=29/Staff=20Engineer/=EC=82=BC=EC=84=B1?=
 =?utf8?q?=EC=A0=84=EC=9E=90?= <jh1302.park@samsung.com>
Date: Mon, 1 Oct 2018 16:40:51 +0900
Subject: [PATCH] [enco] Introduce IR Utils (#1693)

This commit introduces IRUtils.h and IRUtils.cpp which will hold
coco IR-related utilities used in enco.

Signed-off-by: Jonghyun Park <jh1302.park@samsung.com>
---
 contrib/enco/core/src/IRUtils.cpp                  | 36 ++++++++++++++++++++++
 contrib/enco/core/src/IRUtils.h                    | 34 ++++++++++++++++++++
 .../core/src/Transforms/FeatureUnification.cpp     | 13 +-------
 3 files changed, 71 insertions(+), 12 deletions(-)
 create mode 100644 contrib/enco/core/src/IRUtils.cpp
 create mode 100644 contrib/enco/core/src/IRUtils.h

diff --git a/contrib/enco/core/src/IRUtils.cpp b/contrib/enco/core/src/IRUtils.cpp
new file mode 100644
index 0000000..71fd592
--- /dev/null
+++ b/contrib/enco/core/src/IRUtils.cpp
@@ -0,0 +1,36 @@
+/*
+ * 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
+{
+
+void subst(coco::Object *from, coco::Object *into)
+{
+  assert(from != into);
+
+  while (!from->uses()->empty())
+  {
+    auto use = *(from->uses()->begin());
+
+    use->value(into);
+  }
+}
+
+} // namespace enco
diff --git a/contrib/enco/core/src/IRUtils.h b/contrib/enco/core/src/IRUtils.h
new file mode 100644
index 0000000..984a8c1
--- /dev/null
+++ b/contrib/enco/core/src/IRUtils.h
@@ -0,0 +1,34 @@
+/*
+ * 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 __ENCO_IR_UTILS_H__
+#define __ENCO_IR_UTILS_H__
+
+#include <coco/IR.h>
+
+namespace enco
+{
+
+/**
+ * @brief Replace all the "USE" of 'from' with 'into'
+ *
+ * NOTE subst(from, into) WILL NOT update 'DEF'
+ */
+void subst(coco::Object *from, coco::Object *into);
+
+} // namespace enco
+
+#endif // __ENCO_IR_UTILS_H__
diff --git a/contrib/enco/core/src/Transforms/FeatureUnification.cpp b/contrib/enco/core/src/Transforms/FeatureUnification.cpp
index 56db326..95e79b5 100644
--- a/contrib/enco/core/src/Transforms/FeatureUnification.cpp
+++ b/contrib/enco/core/src/Transforms/FeatureUnification.cpp
@@ -15,6 +15,7 @@
  */
 
 #include "FeatureUnification.h"
+#include "IRUtils.h"
 
 #include <nncc/foundation/Memory.h>
 
@@ -28,18 +29,6 @@ using nncc::foundation::make_unique;
 namespace
 {
 
-void subst(coco::Object *from, coco::Object *into)
-{
-  assert(from != into);
-
-  while (!from->uses()->empty())
-  {
-    auto use = *(from->uses()->begin());
-
-    use->value(into);
-  }
-}
-
 bool is_static_layout(const coco::FeatureLayout::ID *id)
 {
   if (id == coco::FeatureLayouts::BHWC::uid())
-- 
2.7.4