14 files changed, 784 insertions, 0 deletions
diff --git a/compiler/luci/partition/src/Nodes/CircleAdd.cpp b/compiler/luci/partition/src/Nodes/CircleAdd.cpp
new file mode 100644
index 000000000..d393997e9
--- /dev/null
+++ b/compiler/luci/partition/src/Nodes/CircleAdd.cpp
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2021 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 "ConnectNode.h"
+
+namespace
+{
+
+void connect(luci::ConnectNode *cn, const luci::CircleAdd *node)
+{
+  auto *cloned = loco::must_cast<luci::CircleAdd *>(cn->find_clone(node));
+
+  luci::CircleNode *x = loco::must_cast<luci::CircleNode *>(node->x());
+  luci::CircleNode *y = loco::must_cast<luci::CircleNode *>(node->y());
+
+  cloned->x(cn->find_clone(x));
+  cloned->y(cn->find_clone(y));
+}
+
+} // namespace
+
+namespace luci
+{
+
+void ConnectNode::visit(const luci::CircleAdd *node) { connect(this, node); }
+
+} // namespace luci
diff --git a/compiler/luci/partition/src/Nodes/CircleAdd.test.cpp b/compiler/luci/partition/src/Nodes/CircleAdd.test.cpp
new file mode 100644
index 000000000..e457b83d2
--- /dev/null
+++ b/compiler/luci/partition/src/Nodes/CircleAdd.test.cpp
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 2021 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 "ConnectNode.h"
+
+#include "ConnectNode.test.h"
+
+#include <luci/Service/CircleNodeClone.h>
+
+#include <gtest/gtest.h>
+
+namespace
+{
+
+using namespace luci::test;
+
+class NodeGraphlet : public NodeGraphletT<luci::CircleAdd>
+{
+public:
+  NodeGraphlet() = default;
+
+public:
+  void init(loco::Graph *g) override
+  {
+    NodeGraphletT<luci::CircleAdd>::init(g);
+
+    _node->fusedActivationFunction(luci::FusedActFunc::RELU);
+  }
+};
+
+class TestNodeGraph : public TestIsOGraph<2>, public NodeGraphlet
+{
+public:
+  TestNodeGraph() = default;
+
+public:
+  void init(const ShapeU32 shape)
+  {
+    TestIsOGraph<2>::init({shape, shape}, shape);
+    NodeGraphlet::init(g());
+
+    node()->x(input(0));
+    node()->y(input(1));
+
+    output()->from(node());
+  }
+};
+
+} // namespace
+
+TEST(ConnectNodeTest, connect_Add)
+{
+  TestNodeGraph tng;
+  tng.init({2, 3});
+
+  ConnectionTestHelper cth;
+  cth.prepare_inputs(&tng);
+
+  auto *node = tng.node();
+  ASSERT_NO_THROW(loco::must_cast<luci::CircleAdd *>(node));
+
+  auto *clone = luci::clone_node(node, cth.graph_clone());
+  ASSERT_NO_THROW(loco::must_cast<luci::CircleAdd *>(clone));
+
+  cth.clone_connect(node, clone);
+
+  ASSERT_EQ(2, clone->arity());
+  ASSERT_EQ(cth.inputs(0), clone->arg(0));
+  ASSERT_EQ(cth.inputs(1), clone->arg(1));
+}
+
+TEST(ConnectNodeTest, connect_Add_NEG)
+{
+  TestNodeGraph tng;
+  tng.init({2, 3});
+
+  ConnectionTestHelper cth;
+  cth.prepare_inputs_miss(&tng);
+
+  auto *node = tng.node();
+  ASSERT_NO_THROW(loco::must_cast<luci::CircleAdd *>(node));
+
+  auto *clone = luci::clone_node(node, cth.graph_clone());
+  ASSERT_NO_THROW(loco::must_cast<luci::CircleAdd *>(clone));
+
+  EXPECT_ANY_THROW(cth.clone_connect(node, clone));
+}
diff --git a/compiler/luci/partition/src/Nodes/CircleConst.cpp b/compiler/luci/partition/src/Nodes/CircleConst.cpp
new file mode 100644
index 000000000..118cd8de2
--- /dev/null
+++ b/compiler/luci/partition/src/Nodes/CircleConst.cpp
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2021 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 "ConnectNode.h"
+
+namespace luci
+{
+
+void ConnectNode::visit(const luci::CircleConst *)
+{
+  // Nothing to do
+}
+
+} // namespace luci
diff --git a/compiler/luci/partition/src/Nodes/CircleDiv.cpp b/compiler/luci/partition/src/Nodes/CircleDiv.cpp
new file mode 100644
index 000000000..480338542
--- /dev/null
+++ b/compiler/luci/partition/src/Nodes/CircleDiv.cpp
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2021 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 "ConnectNode.h"
+
+namespace
+{
+
+void connect(luci::ConnectNode *cn, const luci::CircleDiv *node)
+{
+  auto *cloned = loco::must_cast<luci::CircleDiv *>(cn->find_clone(node));
+
+  luci::CircleNode *x = loco::must_cast<luci::CircleNode *>(node->x());
+  luci::CircleNode *y = loco::must_cast<luci::CircleNode *>(node->y());
+
+  cloned->x(cn->find_clone(x));
+  cloned->y(cn->find_clone(y));
+}
+
+} // namespace
+
+namespace luci
+{
+
+void ConnectNode::visit(const luci::CircleDiv *node) { connect(this, node); }
+
+} // namespace luci
diff --git a/compiler/luci/partition/src/Nodes/CircleDiv.test.cpp b/compiler/luci/partition/src/Nodes/CircleDiv.test.cpp
new file mode 100644
index 000000000..226932337
--- /dev/null
+++ b/compiler/luci/partition/src/Nodes/CircleDiv.test.cpp
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 2021 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 "ConnectNode.h"
+
+#include "ConnectNode.test.h"
+
+#include <luci/Service/CircleNodeClone.h>
+
+#include <gtest/gtest.h>
+
+namespace
+{
+
+using namespace luci::test;
+
+class NodeGraphlet : public NodeGraphletT<luci::CircleDiv>
+{
+public:
+  NodeGraphlet() = default;
+
+public:
+  void init(loco::Graph *g) override
+  {
+    NodeGraphletT<luci::CircleDiv>::init(g);
+
+    _node->fusedActivationFunction(luci::FusedActFunc::RELU);
+  }
+};
+
+class TestNodeGraph : public TestIsOGraph<2>, public NodeGraphlet
+{
+public:
+  TestNodeGraph() = default;
+
+public:
+  void init(const ShapeU32 shape)
+  {
+    TestIsOGraph<2>::init({shape, shape}, shape);
+    NodeGraphlet::init(g());
+
+    node()->x(input(0));
+    node()->y(input(1));
+
+    output()->from(node());
+  }
+};
+
+} // namespace
+
+TEST(ConnectNodeTest, connect_Div)
+{
+  TestNodeGraph tng;
+  tng.init({2, 3});
+
+  ConnectionTestHelper cth;
+  cth.prepare_inputs(&tng);
+
+  auto *node = tng.node();
+  ASSERT_NO_THROW(loco::must_cast<luci::CircleDiv *>(node));
+
+  auto *clone = luci::clone_node(node, cth.graph_clone());
+  ASSERT_NO_THROW(loco::must_cast<luci::CircleDiv *>(clone));
+
+  cth.clone_connect(node, clone);
+
+  ASSERT_EQ(2, clone->arity());
+  ASSERT_EQ(cth.inputs(0), clone->arg(0));
+  ASSERT_EQ(cth.inputs(1), clone->arg(1));
+}
+
+TEST(ConnectNodeTest, connect_Div_NEG)
+{
+  TestNodeGraph tng;
+  tng.init({2, 3});
+
+  ConnectionTestHelper cth;
+  cth.prepare_inputs_miss(&tng);
+
+  auto *node = tng.node();
+  ASSERT_NO_THROW(loco::must_cast<luci::CircleDiv *>(node));
+
+  auto *clone = luci::clone_node(node, cth.graph_clone());
+  ASSERT_NO_THROW(loco::must_cast<luci::CircleDiv *>(clone));
+
+  EXPECT_ANY_THROW(cth.clone_connect(node, clone));
+}
diff --git a/compiler/luci/partition/src/Nodes/CircleMean.cpp b/compiler/luci/partition/src/Nodes/CircleMean.cpp
new file mode 100644
index 000000000..b634e5838
--- /dev/null
+++ b/compiler/luci/partition/src/Nodes/CircleMean.cpp
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2021 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 "ConnectNode.h"
+
+namespace
+{
+
+void connect(luci::ConnectNode *cn, const luci::CircleMean *node)
+{
+  auto *cloned = loco::must_cast<luci::CircleMean *>(cn->find_clone(node));
+
+  luci::CircleNode *input = loco::must_cast<luci::CircleNode *>(node->input());
+  luci::CircleNode *reduction_indices =
+    loco::must_cast<luci::CircleNode *>(node->reduction_indices());
+
+  cloned->input(cn->find_clone(input));
+  cloned->reduction_indices(cn->find_clone(reduction_indices));
+}
+
+} // namespace
+
+namespace luci
+{
+
+void ConnectNode::visit(const luci::CircleMean *node) { connect(this, node); }
+
+} // namespace luci
diff --git a/compiler/luci/partition/src/Nodes/CircleMul.cpp b/compiler/luci/partition/src/Nodes/CircleMul.cpp
new file mode 100644
index 000000000..2cd2b4038
--- /dev/null
+++ b/compiler/luci/partition/src/Nodes/CircleMul.cpp
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2021 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 "ConnectNode.h"
+
+namespace
+{
+
+void connect(luci::ConnectNode *cn, const luci::CircleMul *node)
+{
+  auto *cloned = loco::must_cast<luci::CircleMul *>(cn->find_clone(node));
+
+  luci::CircleNode *x = loco::must_cast<luci::CircleNode *>(node->x());
+  luci::CircleNode *y = loco::must_cast<luci::CircleNode *>(node->y());
+
+  cloned->x(cn->find_clone(x));
+  cloned->y(cn->find_clone(y));
+}
+
+} // namespace
+
+namespace luci
+{
+
+void ConnectNode::visit(const luci::CircleMul *node) { connect(this, node); }
+
+} // namespace luci
diff --git a/compiler/luci/partition/src/Nodes/CircleMul.test.cpp b/compiler/luci/partition/src/Nodes/CircleMul.test.cpp
new file mode 100644
index 000000000..99cf0824d
--- /dev/null
+++ b/compiler/luci/partition/src/Nodes/CircleMul.test.cpp
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 2021 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 "ConnectNode.h"
+
+#include "ConnectNode.test.h"
+
+#include <luci/Service/CircleNodeClone.h>
+
+#include <gtest/gtest.h>
+
+namespace
+{
+
+using namespace luci::test;
+
+class NodeGraphlet : public NodeGraphletT<luci::CircleMul>
+{
+public:
+  NodeGraphlet() = default;
+
+public:
+  void init(loco::Graph *g)
+  {
+    NodeGraphletT<luci::CircleMul>::init(g);
+
+    _node->fusedActivationFunction(luci::FusedActFunc::RELU);
+  }
+};
+
+class TestNodeGraph : public TestIsOGraph<2>, public NodeGraphlet
+{
+public:
+  TestNodeGraph() = default;
+
+public:
+  void init(const ShapeU32 shape)
+  {
+    TestIsOGraph<2>::init({shape, shape}, shape);
+    NodeGraphlet::init(g());
+
+    node()->x(input(0));
+    node()->y(input(1));
+
+    output()->from(node());
+  }
+};
+
+} // namespace
+
+TEST(ConnectNodeTest, connect_Mul)
+{
+  TestNodeGraph tng;
+  tng.init({2, 3});
+
+  ConnectionTestHelper cth;
+  cth.prepare_inputs(&tng);
+
+  auto *node = tng.node();
+  ASSERT_NO_THROW(loco::must_cast<luci::CircleMul *>(node));
+
+  auto *clone = luci::clone_node(node, cth.graph_clone());
+  ASSERT_NO_THROW(loco::must_cast<luci::CircleMul *>(clone));
+
+  cth.clone_connect(node, clone);
+
+  ASSERT_EQ(2, clone->arity());
+  ASSERT_EQ(cth.inputs(0), clone->arg(0));
+  ASSERT_EQ(cth.inputs(1), clone->arg(1));
+}
+
+TEST(ConnectNodeTest, connect_Mul_NEG)
+{
+  TestNodeGraph tng;
+  tng.init({2, 3});
+
+  ConnectionTestHelper cth;
+  cth.prepare_inputs_miss(&tng);
+
+  auto *node = tng.node();
+  ASSERT_NO_THROW(loco::must_cast<luci::CircleMul *>(node));
+
+  auto *clone = luci::clone_node(node, cth.graph_clone());
+  ASSERT_NO_THROW(loco::must_cast<luci::CircleMul *>(clone));
+
+  EXPECT_ANY_THROW(cth.clone_connect(node, clone));
+}
diff --git a/compiler/luci/partition/src/Nodes/CirclePow.cpp b/compiler/luci/partition/src/Nodes/CirclePow.cpp
new file mode 100644
index 000000000..fb180ee69
--- /dev/null
+++ b/compiler/luci/partition/src/Nodes/CirclePow.cpp
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2021 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 "ConnectNode.h"
+
+namespace
+{
+
+void connect(luci::ConnectNode *cn, const luci::CirclePow *node)
+{
+  auto *cloned = loco::must_cast<luci::CirclePow *>(cn->find_clone(node));
+
+  luci::CircleNode *x = loco::must_cast<luci::CircleNode *>(node->x());
+  luci::CircleNode *y = loco::must_cast<luci::CircleNode *>(node->y());
+
+  cloned->x(cn->find_clone(x));
+  cloned->y(cn->find_clone(y));
+}
+
+} // namespace
+
+namespace luci
+{
+
+void ConnectNode::visit(const luci::CirclePow *node) { connect(this, node); }
+
+} // namespace luci
diff --git a/compiler/luci/partition/src/Nodes/CircleRsqrt.cpp b/compiler/luci/partition/src/Nodes/CircleRsqrt.cpp
new file mode 100644
index 000000000..03e64aad0
--- /dev/null
+++ b/compiler/luci/partition/src/Nodes/CircleRsqrt.cpp
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2021 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 "ConnectNode.h"
+
+namespace
+{
+
+void connect(luci::ConnectNode *cn, const luci::CircleRsqrt *node)
+{
+  auto *cloned = loco::must_cast<luci::CircleRsqrt *>(cn->find_clone(node));
+
+  luci::CircleNode *x = loco::must_cast<luci::CircleNode *>(node->x());
+
+  cloned->x(cn->find_clone(x));
+}
+
+} // namespace
+
+namespace luci
+{
+
+void ConnectNode::visit(const luci::CircleRsqrt *node) { connect(this, node); }
+
+} // namespace luci
diff --git a/compiler/luci/partition/src/Nodes/CircleSqrt.cpp b/compiler/luci/partition/src/Nodes/CircleSqrt.cpp
new file mode 100644
index 000000000..f737aac8d
--- /dev/null
+++ b/compiler/luci/partition/src/Nodes/CircleSqrt.cpp
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2021 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 "ConnectNode.h"
+
+namespace
+{
+
+void connect(luci::ConnectNode *cn, const luci::CircleSqrt *node)
+{
+  auto *cloned = loco::must_cast<luci::CircleSqrt *>(cn->find_clone(node));
+
+  luci::CircleNode *x = loco::must_cast<luci::CircleNode *>(node->x());
+
+  cloned->x(cn->find_clone(x));
+}
+
+} // namespace
+
+namespace luci
+{
+
+void ConnectNode::visit(const luci::CircleSqrt *node) { connect(this, node); }
+
+} // namespace luci
diff --git a/compiler/luci/partition/src/Nodes/CircleSquaredDifference.cpp b/compiler/luci/partition/src/Nodes/CircleSquaredDifference.cpp
new file mode 100644
index 000000000..40dd31706
--- /dev/null
+++ b/compiler/luci/partition/src/Nodes/CircleSquaredDifference.cpp
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2021 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 "ConnectNode.h"
+
+namespace
+{
+
+void connect(luci::ConnectNode *cn, const luci::CircleSquaredDifference *node)
+{
+  auto *cloned = loco::must_cast<luci::CircleSquaredDifference *>(cn->find_clone(node));
+
+  luci::CircleNode *x = loco::must_cast<luci::CircleNode *>(node->x());
+  luci::CircleNode *y = loco::must_cast<luci::CircleNode *>(node->y());
+
+  cloned->x(cn->find_clone(x));
+  cloned->y(cn->find_clone(y));
+}
+
+} // namespace
+
+namespace luci
+{
+
+void ConnectNode::visit(const luci::CircleSquaredDifference *node) { connect(this, node); }
+
+} // namespace luci
diff --git a/compiler/luci/partition/src/Nodes/CircleSub.cpp b/compiler/luci/partition/src/Nodes/CircleSub.cpp
new file mode 100644
index 000000000..8ac294b7b
--- /dev/null
+++ b/compiler/luci/partition/src/Nodes/CircleSub.cpp
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2021 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 "ConnectNode.h"
+
+namespace
+{
+
+void connect(luci::ConnectNode *cn, const luci::CircleSub *node)
+{
+  auto *cloned = loco::must_cast<luci::CircleSub *>(cn->find_clone(node));
+
+  luci::CircleNode *x = loco::must_cast<luci::CircleNode *>(node->x());
+  luci::CircleNode *y = loco::must_cast<luci::CircleNode *>(node->y());
+
+  cloned->x(cn->find_clone(x));
+  cloned->y(cn->find_clone(y));
+}
+
+} // namespace
+
+namespace luci
+{
+
+void ConnectNode::visit(const luci::CircleSub *node) { connect(this, node); }
+
+} // namespace luci
diff --git a/compiler/luci/partition/src/Nodes/CircleSub.test.cpp b/compiler/luci/partition/src/Nodes/CircleSub.test.cpp
new file mode 100644
index 000000000..7c0d83745
--- /dev/null
+++ b/compiler/luci/partition/src/Nodes/CircleSub.test.cpp
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 2021 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 "ConnectNode.h"
+
+#include "ConnectNode.test.h"
+
+#include <luci/Service/CircleNodeClone.h>
+
+#include <gtest/gtest.h>
+
+namespace
+{
+
+using namespace luci::test;
+
+class NodeGraphlet : public NodeGraphletT<luci::CircleSub>
+{
+public:
+  NodeGraphlet() = default;
+
+public:
+  void init(loco::Graph *g)
+  {
+    NodeGraphletT<luci::CircleSub>::init(g);
+
+    _node->fusedActivationFunction(luci::FusedActFunc::RELU);
+  }
+};
+
+class TestNodeGraph : public TestIsOGraph<2>, public NodeGraphlet
+{
+public:
+  TestNodeGraph() = default;
+
+public:
+  void init(const ShapeU32 shape)
+  {
+    TestIsOGraph<2>::init({shape, shape}, shape);
+    NodeGraphlet::init(g());
+
+    node()->x(input(0));
+    node()->y(input(1));
+
+    output()->from(node());
+  }
+};
+
+} // namespace
+
+TEST(ConnectNodeTest, connect_Sub)
+{
+  TestNodeGraph tng;
+  tng.init({2, 3});
+
+  ConnectionTestHelper cth;
+  cth.prepare_inputs(&tng);
+
+  auto *node = tng.node();
+  ASSERT_NO_THROW(loco::must_cast<luci::CircleSub *>(node));
+
+  auto *clone = luci::clone_node(node, cth.graph_clone());
+  ASSERT_NO_THROW(loco::must_cast<luci::CircleSub *>(clone));
+
+  cth.clone_connect(node, clone);
+
+  ASSERT_EQ(2, clone->arity());
+  ASSERT_EQ(cth.inputs(0), clone->arg(0));
+  ASSERT_EQ(cth.inputs(1), clone->arg(1));
+}
+
+TEST(ConnectNodeTest, connect_Sub_NEG)
+{
+  TestNodeGraph tng;
+  tng.init({2, 3});
+
+  ConnectionTestHelper cth;
+  cth.prepare_inputs_miss(&tng);
+
+  auto *node = tng.node();
+  ASSERT_NO_THROW(loco::must_cast<luci::CircleSub *>(node));
+
+  auto *clone = luci::clone_node(node, cth.graph_clone());
+  ASSERT_NO_THROW(loco::must_cast<luci::CircleSub *>(clone));
+
+  EXPECT_ANY_THROW(cth.clone_connect(node, clone));
+}