IVGCVSW-3993 Add frontend and reference workload for ComparisonLayer

* Added frontend for ComparisonLayer
* Added RefComparisonWorkload
* Deprecated and removed Equal and Greater layers and workloads
* Updated tests to ensure backward compatibility

Signed-off-by: Aron Virginas-Tar <Aron.Virginas-Tar@arm.com>
Change-Id: Id50c880be1b567c531efff919c0c366d0a71cbe9

1 files changed, 50 insertions, 0 deletions

diff --git a/src/armnn/layers/ComparisonLayer.hpp b/src/armnn/layers/ComparisonLayer.hpp
new file mode 100644
index 0000000000..bbc2b573bf
--- /dev/null
+++ b/src/armnn/layers/ComparisonLayer.hpp
@@ -0,0 +1,50 @@
+//
+// Copyright © 2019 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+#include "LayerWithParameters.hpp"
+
+namespace armnn
+{
+
+/// This layer represents a comparison operation.
+class ComparisonLayer : public LayerWithParameters<ComparisonDescriptor>
+{
+public:
+    /// Makes a workload for the Comparison type
+    /// @param [in] graph The graph where this layer can be found
+    /// @param [in] factory The workload factory which will create the workload
+    /// @return A pointer to the created workload, or nullptr if not created
+    virtual std::unique_ptr<IWorkload> CreateWorkload(const Graph& graph,
+                                                      const IWorkloadFactory& factory) const override;
+
+    /// Creates a dynamically-allocated copy of this layer
+    /// @param [in] graph The graph into which this layer is being cloned
+    ComparisonLayer* Clone(Graph& graph) const override;
+
+    /// By default returns inputShapes if the number of inputs are equal to number of outputs,
+    /// otherwise infers the output shapes from given input shapes and layer properties.
+    /// @param [in] inputShapes The input shapes layer has.
+    /// @return A vector to the inferred output shape.
+    std::vector<TensorShape> InferOutputShapes(const std::vector<TensorShape>& inputShapes) const override;
+
+    /// Check if the input tensor shape(s) will lead to a valid configuration
+    /// of @ref ComparisonLayer
+    void ValidateTensorShapesFromInputs() override;
+
+    void Accept(ILayerVisitor& visitor) const override;
+
+protected:
+    /// Constructor to create a ComparisonLayer
+    /// @param [in] param ComparisonDescriptor to configure the ComparisonLayer
+    /// @param [in] name Optional name for the layer
+    ComparisonLayer(const ComparisonDescriptor& param, const char* name);
+
+    /// Default destructor
+    ~ComparisonLayer() = default;
+};
+
+} // namespace armnn