From e4912cd7a829613889f544c7a2c94e8c0ce35bc5 Mon Sep 17 00:00:00 2001
From: =?utf8?q?=EB=B0=95=EC=84=B8=ED=9D=AC/On-Device=20Lab=28SR=29/Princip?=
 =?utf8?q?al=20Engineer/=EC=82=BC=EC=84=B1=EC=A0=84=EC=9E=90?=
 <saehie.park@samsung.com>
Date: Wed, 14 Aug 2019 07:23:49 +0900
Subject: [PATCH] [moco-tf] Introduce TFSqrt IR (#6553)

This will introduce TFSqrt IR to represent TensorFlow Sqrt node and required minimum implementation

Signed-off-by: SaeHie Park <saehie.park@samsung.com>
---
 compiler/moco-tf/src/Dialect/TFNodes.h             |  1 +
 compiler/moco-tf/src/Dialect/TFNodes.lst           |  1 +
 compiler/moco-tf/src/IR/TFSqrt.h                   | 55 ++++++++++++++++++++++
 compiler/moco-tf/src/IR/TFSqrt.test.cpp            | 31 ++++++++++++
 .../moco-tf/src/Transforms/FixShapeTransform.cpp   |  7 +++
 5 files changed, 95 insertions(+)
 create mode 100644 compiler/moco-tf/src/IR/TFSqrt.h
 create mode 100644 compiler/moco-tf/src/IR/TFSqrt.test.cpp

diff --git a/compiler/moco-tf/src/Dialect/TFNodes.h b/compiler/moco-tf/src/Dialect/TFNodes.h
index 5bbc431..17ec339 100644
--- a/compiler/moco-tf/src/Dialect/TFNodes.h
+++ b/compiler/moco-tf/src/Dialect/TFNodes.h
@@ -34,6 +34,7 @@
 #include "IR/TFReshape.h"
 #include "IR/TFRsqrt.h"
 #include "IR/TFShape.h"
+#include "IR/TFSqrt.h"
 #include "IR/TFSqueeze.h"
 #include "IR/TFSub.h"
 
diff --git a/compiler/moco-tf/src/Dialect/TFNodes.lst b/compiler/moco-tf/src/Dialect/TFNodes.lst
index b9bc814..6590cde 100644
--- a/compiler/moco-tf/src/Dialect/TFNodes.lst
+++ b/compiler/moco-tf/src/Dialect/TFNodes.lst
@@ -24,5 +24,6 @@ TENSORFLOW_NODE(Relu6, TFRelu6)
 TENSORFLOW_NODE(Reshape, TFReshape)
 TENSORFLOW_NODE(Rsqrt, TFRsqrt)
 TENSORFLOW_NODE(Shape, TFShape)
+TENSORFLOW_NODE(Sqrt, TFSqrt)
 TENSORFLOW_NODE(Squeeze, TFSqueeze)
 TENSORFLOW_NODE(Sub, TFSub)
diff --git a/compiler/moco-tf/src/IR/TFSqrt.h b/compiler/moco-tf/src/IR/TFSqrt.h
new file mode 100644
index 0000000..a95ff16
--- /dev/null
+++ b/compiler/moco-tf/src/IR/TFSqrt.h
@@ -0,0 +1,55 @@
+/*
+ * 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.
+ */
+
+#ifndef __MOCO_TF_IR_TFSQRT_H__
+#define __MOCO_TF_IR_TFSQRT_H__
+
+#include "Dialect/TFNodeDecl.h"
+
+namespace moco
+{
+namespace tf
+{
+
+/// @note TFSqrt corresponds to the following GraphDef
+/*
+node {
+  name: "Sqrt"
+  op: "Sqrt"
+  input: "Placeholder"
+  attr {
+    key: "T"
+    value {
+      type: DT_FLOAT
+    }
+  }
+}
+*/
+
+class TFSqrt final : public loco::FixedArityNode<1, TFNodeImpl<TFOpcode::Sqrt>>
+{
+public:
+  TFSqrt() = default;
+
+public:
+  Node *x(void) const { return at(0)->node(); }
+  void x(Node *node) { at(0)->node(node); }
+};
+
+} // namespace tf
+} // namespace moco
+
+#endif // __MOCO_TF_IR_TFSQRT_H__
diff --git a/compiler/moco-tf/src/IR/TFSqrt.test.cpp b/compiler/moco-tf/src/IR/TFSqrt.test.cpp
new file mode 100644
index 0000000..9048d57
--- /dev/null
+++ b/compiler/moco-tf/src/IR/TFSqrt.test.cpp
@@ -0,0 +1,31 @@
+/*
+ * 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 "IR/TFSqrt.h"
+
+#include "Dialect/TFDialect.h"
+
+#include <gtest/gtest.h>
+
+TEST(TFSqrtTest, constructor)
+{
+  moco::tf::TFSqrt sqrt_node;
+
+  ASSERT_EQ(sqrt_node.dialect(), moco::tf::TFDialect::get());
+  ASSERT_EQ(sqrt_node.opcode(), moco::tf::TFOpcode::Sqrt);
+
+  ASSERT_EQ(sqrt_node.x(), nullptr);
+}
diff --git a/compiler/moco-tf/src/Transforms/FixShapeTransform.cpp b/compiler/moco-tf/src/Transforms/FixShapeTransform.cpp
index fc89e3d..9f0f135 100644
--- a/compiler/moco-tf/src/Transforms/FixShapeTransform.cpp
+++ b/compiler/moco-tf/src/Transforms/FixShapeTransform.cpp
@@ -1325,6 +1325,13 @@ bool fix_shape(moco::tf::TFShape *node)
   return true;
 }
 
+bool fix_shape(moco::tf::TFSqrt *node)
+{
+  // Output shape is same as the input x
+  auto x = node->x();
+  return copy_shapedata(x, node);
+}
+
 bool fix_shape(moco::tf::TFSqueeze *node)
 {
   auto shapedata = node->annot<ShapeInferenceData>();
-- 
2.7.4