IVGCVSW-2510 Ref workload implementation for Gather operator

 * add implemenentation for GatherQueueDescriptor validate function
 * add FirstInputTypedWorkload to allow type check on the first input tensor only
 * add ref workload implemenentation for float and uint8
 * add Gather layer support in Ref
 * unit tests

Change-Id: I4578a3211f11d24aa29d15bcf7f45b0445bcd1ee

1 files changed, 36 insertions, 0 deletions

diff --git a/src/backends/reference/workloads/RefGatherWorkload.hpp b/src/backends/reference/workloads/RefGatherWorkload.hpp
new file mode 100644
index 0000000000..27827490e3
--- /dev/null
+++ b/src/backends/reference/workloads/RefGatherWorkload.hpp
@@ -0,0 +1,36 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+#include <backendsCommon/Workload.hpp>
+#include <backendsCommon/WorkloadData.hpp>
+
+#include <armnn/TypesUtils.hpp>
+
+namespace armnn
+{
+
+template <armnn::DataType DataType>
+class RefGatherWorkload : public FirstInputTypedWorkload<GatherQueueDescriptor, DataType>
+{
+public:
+
+    static const std::string& GetName()
+    {
+        static const std::string name = std::string("RefGather") + GetDataTypeName(DataType) + "Workload";
+        return name;
+    }
+
+    using FirstInputTypedWorkload<GatherQueueDescriptor, DataType>::m_Data;
+    using FirstInputTypedWorkload<GatherQueueDescriptor, DataType>::FirstInputTypedWorkload;
+
+    void Execute() const override;
+};
+
+using RefGatherFloat32Workload = RefGatherWorkload<DataType::Float32>;
+using RefGatherUint8Workload = RefGatherWorkload<DataType::QuantisedAsymm8>;
+
+} // namespace armnn