From d64444ba197c2f95dcf4d205f50a196d5a29cdeb Mon Sep 17 00:00:00 2001
From: thecha01 <theo.charalambous@arm.com>
Date: Mon, 7 Sep 2020 14:50:21 +0100
Subject: 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>
---
 arm_compute/graph/backends/FunctionHelpers.h | 44 ++++++++++++++++++++++++++++
 arm_compute/graph/backends/ValidateHelpers.h | 24 +++++++++++++++
 2 files changed, 68 insertions(+)

(limited to 'arm_compute/graph/backends')

diff --git a/arm_compute/graph/backends/FunctionHelpers.h b/arm_compute/graph/backends/FunctionHelpers.h
index d8873c0363..e8395e4e92 100644
--- a/arm_compute/graph/backends/FunctionHelpers.h
+++ b/arm_compute/graph/backends/FunctionHelpers.h
@@ -1478,6 +1478,50 @@ std::unique_ptr<IFunction> create_quantization_layer(QuantizationLayerNode &node
     return RETURN_UNIQUE_PTR(func);
 }
 
+/** Create a backend reduction operation layer function
+ *
+ * @tparam ReductionOperationFunction Backend reduction operation function
+ * @tparam TargetInfo                 Target-specific information
+ *
+ * @param[in] node Node to create the backend function for
+ * @param[in] ctx  Graph context
+ *
+ * @return Backend reduction sum layer function
+ */
+template <typename ReductionOperationFunction, typename TargetInfo>
+std::unique_ptr<IFunction> create_reduction_operation_layer(ReductionLayerNode &node, GraphContext &ctx)
+{
+    validate_node<TargetInfo>(node, 1 /* expected inputs */, 1 /* expected outputs */);
+
+    // Extract IO and info
+    typename TargetInfo::TensorType *input     = get_backing_tensor<TargetInfo>(node.input(0));
+    typename TargetInfo::TensorType *output    = get_backing_tensor<TargetInfo>(node.output(0));
+    ReductionOperation               op        = node.op();
+    int                              axis      = node.axis();
+    bool                             keep_dims = node.keep_dims();
+    ARM_COMPUTE_ERROR_ON(input == nullptr);
+    ARM_COMPUTE_ERROR_ON(output == nullptr);
+
+    // Create and configure function
+    auto func = support::cpp14::make_unique<ReductionOperationFunction>(get_memory_manager(ctx, TargetInfo::TargetType));
+    func->configure(input, output, axis, op, keep_dims);
+
+    // Log info
+    ARM_COMPUTE_LOG_GRAPH_INFO("Instantiated "
+                               << node.name()
+                               << " Type: " << node.type()
+                               << " Target: " << TargetInfo::TargetType
+                               << " Data Type: " << input->info()->data_type()
+                               << " Input shape: " << input->info()->tensor_shape()
+                               << " Output shape: " << output->info()->tensor_shape()
+                               << " Operation: " << op
+                               << " Axis: " << axis
+                               << " Keep dimensions:" << keep_dims
+                               << std::endl);
+
+    return RETURN_UNIQUE_PTR(func);
+}
+
 /** Create a backend reorg layer function
  *
  * @tparam ReorgLayerFunction Backend reorg function
diff --git a/arm_compute/graph/backends/ValidateHelpers.h b/arm_compute/graph/backends/ValidateHelpers.h
index 1d5fd92838..dd519fbd5e 100644
--- a/arm_compute/graph/backends/ValidateHelpers.h
+++ b/arm_compute/graph/backends/ValidateHelpers.h
@@ -509,6 +509,30 @@ Status validate_quantization_layer(QuantizationLayerNode &node)
     return QuantizationLayer::validate(input, output);
 }
 
+/** Validates a Reduction operation layer node
+ *
+ * @tparam ReductionLayer Reduction layer type
+ *
+ * @param[in] node Node to validate
+ *
+ * @return Status
+ */
+template <typename ReductionLayer>
+Status validate_reduction_operation_layer(ReductionLayerNode &node)
+{
+    ARM_COMPUTE_LOG_GRAPH_VERBOSE("Validating ReductionLayer node with ID : " << node.id() << " and Name: " << node.name() << std::endl);
+
+    ARM_COMPUTE_RETURN_ERROR_ON(node.num_inputs() != 1);
+    ARM_COMPUTE_RETURN_ERROR_ON(node.num_outputs() != 1);
+
+    // Extract input and output
+    arm_compute::ITensorInfo *input  = detail::get_backing_tensor_info(node.input(0));
+    arm_compute::ITensorInfo *output = get_backing_tensor_info(node.output(0));
+
+    // Validate function
+    return ReductionLayer::validate(input, output, node.axis(), node.op(), node.keep_dims());
+}
+
 /** Validates a Reorg layer node
  *
  * @tparam ReorgLayer Reorg layer type
-- 
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