Add Reduction operation layer node to graph API

Signed-off-by: thecha01 <theo.charalambous@arm.com>
Change-Id: Ida819fb8c33790cc9da6d69eeb51e0599269197a
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/3931
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>

6 files changed, 107 insertions, 0 deletions

diff --git a/src/graph/GraphBuilder.cpp b/src/graph/GraphBuilder.cpp
index 33b7c178e5..2f74f065d5 100644
--- a/src/graph/GraphBuilder.cpp
+++ b/src/graph/GraphBuilder.cpp
@@ -642,6 +642,11 @@ NodeID GraphBuilder::add_quantization_node(Graph &g, NodeParams params, NodeIdxP
     return create_simple_single_input_output_node<QuantizationLayerNode>(g, params, input, out_quant_info);
 }
 
+NodeID GraphBuilder::add_reduction_operation_node(Graph &g, NodeParams params, NodeIdxPair input, ReductionOperation op, int axis, bool keep_dims)
+{
+    return create_simple_single_input_output_node<ReductionLayerNode>(g, params, input, op, axis, keep_dims);
+}
+
 NodeID GraphBuilder::add_reorg_node(Graph &g, NodeParams params, NodeIdxPair input, int stride)
 {
     return create_simple_single_input_output_node<ReorgLayerNode>(g, params, input, stride);
diff --git a/src/graph/backends/CL/CLFunctionsFactory.cpp b/src/graph/backends/CL/CLFunctionsFactory.cpp
index 3948400ebf..5f2f46f72a 100644
--- a/src/graph/backends/CL/CLFunctionsFactory.cpp
+++ b/src/graph/backends/CL/CLFunctionsFactory.cpp
@@ -296,6 +296,8 @@ std::unique_ptr<IFunction> CLFunctionFactory::create(INode *node, GraphContext &
             return detail::create_priorbox_layer<CLPriorBoxLayer, CLTargetInfo>(*polymorphic_downcast<PriorBoxLayerNode *>(node));
         case NodeType::QuantizationLayer:
             return detail::create_quantization_layer<CLQuantizationLayer, CLTargetInfo>(*polymorphic_downcast<QuantizationLayerNode *>(node));
+        case NodeType::ReductionOperationLayer:
+            return detail::create_reduction_operation_layer<CLReductionOperation, CLTargetInfo>(*polymorphic_downcast<ReductionLayerNode *>(node), ctx);
         case NodeType::ReorgLayer:
             return detail::create_reorg_layer<CLReorgLayer, CLTargetInfo>(*polymorphic_downcast<ReorgLayerNode *>(node));
         case NodeType::ReshapeLayer:
diff --git a/src/graph/backends/CL/CLNodeValidator.cpp b/src/graph/backends/CL/CLNodeValidator.cpp
index c3b4e4646f..8b2ecaf20e 100644
--- a/src/graph/backends/CL/CLNodeValidator.cpp
+++ b/src/graph/backends/CL/CLNodeValidator.cpp
@@ -100,6 +100,8 @@ Status CLNodeValidator::validate(INode *node)
             return detail::validate_priorbox_layer<CLPriorBoxLayer>(*polymorphic_downcast<PriorBoxLayerNode *>(node));
         case NodeType::QuantizationLayer:
             return detail::validate_quantization_layer<CLQuantizationLayer>(*polymorphic_downcast<QuantizationLayerNode *>(node));
+        case NodeType::ReductionOperationLayer:
+            return detail::validate_reduction_operation_layer<CLReductionOperation>(*polymorphic_downcast<ReductionLayerNode *>(node));
         case NodeType::ReorgLayer:
             return detail::validate_reorg_layer<CLReorgLayer>(*polymorphic_downcast<ReorgLayerNode *>(node));
         case NodeType::ReshapeLayer:
diff --git a/src/graph/backends/NEON/NEFunctionFactory.cpp b/src/graph/backends/NEON/NEFunctionFactory.cpp
index 686468e0a4..61df45d8d0 100644
--- a/src/graph/backends/NEON/NEFunctionFactory.cpp
+++ b/src/graph/backends/NEON/NEFunctionFactory.cpp
@@ -183,6 +183,8 @@ std::unique_ptr<IFunction> NEFunctionFactory::create(INode *node, GraphContext &
             return detail::create_priorbox_layer<NEPriorBoxLayer, NETargetInfo>(*polymorphic_downcast<PriorBoxLayerNode *>(node));
         case NodeType::QuantizationLayer:
             return detail::create_quantization_layer<NEQuantizationLayer, NETargetInfo>(*polymorphic_downcast<QuantizationLayerNode *>(node));
+        case NodeType::ReductionOperationLayer:
+            return detail::create_reduction_operation_layer<NEReductionOperation, NETargetInfo>(*polymorphic_downcast<ReductionLayerNode *>(node), ctx);
         case NodeType::ReorgLayer:
             return detail::create_reorg_layer<NEReorgLayer, NETargetInfo>(*polymorphic_downcast<ReorgLayerNode *>(node));
         case NodeType::ReshapeLayer:
diff --git a/src/graph/backends/NEON/NENodeValidator.cpp b/src/graph/backends/NEON/NENodeValidator.cpp
index 0d6305b29e..19c96eab50 100644
--- a/src/graph/backends/NEON/NENodeValidator.cpp
+++ b/src/graph/backends/NEON/NENodeValidator.cpp
@@ -100,6 +100,8 @@ Status NENodeValidator::validate(INode *node)
             return detail::validate_priorbox_layer<NEPriorBoxLayer>(*polymorphic_downcast<PriorBoxLayerNode *>(node));
         case NodeType::QuantizationLayer:
             return detail::validate_quantization_layer<NEQuantizationLayer>(*polymorphic_downcast<QuantizationLayerNode *>(node));
+        case NodeType::ReductionOperationLayer:
+            return detail::validate_reduction_operation_layer<NEReductionOperation>(*polymorphic_downcast<ReductionLayerNode *>(node));
         case NodeType::ReorgLayer:
             return detail::validate_reorg_layer<NEReorgLayer>(*polymorphic_downcast<ReorgLayerNode *>(node));
         case NodeType::ReshapeLayer:
diff --git a/src/graph/nodes/ReductionLayerNode.cpp b/src/graph/nodes/ReductionLayerNode.cpp
new file mode 100644
index 0000000000..0e93039894
--- /dev/null
+++ b/src/graph/nodes/ReductionLayerNode.cpp
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2020 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.
+ */
+#include "arm_compute/graph/nodes/ReductionLayerNode.h"
+
+#include "arm_compute/core/utils/misc/ShapeCalculator.h"
+#include "arm_compute/graph/Graph.h"
+#include "arm_compute/graph/INodeVisitor.h"
+#include "arm_compute/graph/Utils.h"
+
+namespace arm_compute
+{
+namespace graph
+{
+ReductionLayerNode::ReductionLayerNode(ReductionOperation op, unsigned int axis, bool keep_dims)
+    : _op(op), _axis(axis), _keep_dims(keep_dims)
+{
+    _input_edges.resize(1, EmptyEdgeID);
+    _outputs.resize(1, NullTensorID);
+}
+
+ReductionOperation ReductionLayerNode::op() const
+{
+    return _op;
+}
+
+unsigned int ReductionLayerNode::axis() const
+{
+    return _axis;
+}
+
+bool ReductionLayerNode::keep_dims() const
+{
+    return _keep_dims;
+}
+
+bool ReductionLayerNode::forward_descriptors()
+{
+    if((input_id(0) != NullTensorID) && (output_id(0) != NullTensorID))
+    {
+        Tensor *dst = output(0);
+        ARM_COMPUTE_ERROR_ON(dst == nullptr);
+        dst->desc() = configure_output(0);
+        return true;
+    }
+    return false;
+}
+
+TensorDescriptor ReductionLayerNode::configure_output(size_t idx) const
+{
+    ARM_COMPUTE_UNUSED(idx);
+    ARM_COMPUTE_ERROR_ON(idx >= _outputs.size());
+
+    const Tensor *src = input(0);
+    ARM_COMPUTE_ERROR_ON(src == nullptr);
+
+    TensorDescriptor output_info  = src->desc();
+    TensorShape      output_shape = arm_compute::misc::shape_calculator::compute_reduced_shape(output_info.shape, _axis, _keep_dims);
+    output_info.set_shape(output_shape);
+
+    return output_info;
+}
+
+NodeType ReductionLayerNode::type() const
+{
+    return NodeType::ReductionOperationLayer;
+}
+
+void ReductionLayerNode::accept(INodeVisitor &v)
+{
+    v.visit(*this);
+}
+} // namespace graph
+} // namespace arm_compute
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