COMPMID-915: Create ResNet50 example

ResidualLayer node (COMPMID-916) also created as required for the ResNet
architecture.

Change-Id: I4fb4d2e08a8d3ce206f96f7946f5afc3e244676a
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/121185
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>

3 files changed, 78 insertions, 0 deletions

diff --git a/arm_compute/graph/Nodes.h b/arm_compute/graph/Nodes.h
index 4390c59959..3009a24fcb 100644
--- a/arm_compute/graph/Nodes.h
+++ b/arm_compute/graph/Nodes.h
@@ -39,6 +39,7 @@
 #include "arm_compute/graph/nodes/PoolingLayer.h"
 #include "arm_compute/graph/nodes/QuantizationLayer.h"
 #include "arm_compute/graph/nodes/ReshapeLayer.h"
+#include "arm_compute/graph/nodes/ResidualLayer.h"
 #include "arm_compute/graph/nodes/SoftmaxLayer.h"
 
 #endif /* __ARM_COMPUTE_GRAPH_NODES_H__ */
diff --git a/arm_compute/graph/Types.h b/arm_compute/graph/Types.h
index 3ec0c7a5cf..a5d6ae8459 100644
--- a/arm_compute/graph/Types.h
+++ b/arm_compute/graph/Types.h
@@ -91,6 +91,7 @@ enum class ConvolutionMethodHint
 enum class OperationType
 {
     ActivationLayer,
+    ArithmeticAddition,
     BatchNormalizationLayer,
     ConvolutionLayer,
     DepthConvertLayer,
diff --git a/arm_compute/graph/nodes/ResidualLayer.h b/arm_compute/graph/nodes/ResidualLayer.h
new file mode 100644
index 0000000000..1eecf6f996
--- /dev/null
+++ b/arm_compute/graph/nodes/ResidualLayer.h
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2017-2018 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef __ARM_COMPUTE_GRAPH_RESIDUAL_LAYER_H__
+#define __ARM_COMPUTE_GRAPH_RESIDUAL_LAYER_H__
+
+#include "arm_compute/graph/GraphContext.h"
+#include "arm_compute/graph/INode.h"
+#include "arm_compute/graph/ITensorObject.h"
+#include "arm_compute/graph/SubGraph.h"
+#include "arm_compute/graph/Types.h"
+
+#include "arm_compute/core/utils/misc/utility.h"
+
+#include <vector>
+
+namespace arm_compute
+{
+namespace graph
+{
+/** Branch Layer node */
+class ResidualLayer final : public INode
+{
+public:
+    /** Default Constructor
+     *
+     * @param[in] sub_graph1 First graph branch
+     * @param[in] sub_graph2 Second graph branch
+     */
+    template <typename... Ts>
+    ResidualLayer(SubGraph &&sub_graph1, SubGraph &&sub_graph2)
+        : _sub_graphs()
+    {
+        _sub_graphs.push_back(arm_compute::support::cpp14::make_unique<SubGraph>(std::move(sub_graph1)));
+        _sub_graphs.push_back(arm_compute::support::cpp14::make_unique<SubGraph>(std::move(sub_graph2)));
+    }
+    /** Default Constructor
+     *
+     * @param[in] sub_graph Sub graph
+     */
+    template <typename... Ts>
+    ResidualLayer(SubGraph &&sub_graph)
+        : _sub_graphs()
+    {
+        _sub_graphs.push_back(arm_compute::support::cpp14::make_unique<SubGraph>(std::move(sub_graph)));
+    }
+
+    // Inherited methods overriden:
+    std::unique_ptr<arm_compute::IFunction> instantiate_node(GraphContext &ctx, ITensorObject *input, ITensorObject *output) override;
+
+private:
+    std::vector<std::unique_ptr<SubGraph>> _sub_graphs;
+};
+} // namespace graph
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_GRAPH_RESIDUAL_LAYER_H__ */