IVGCVSW-1898 : Ref backend folder structure

* Reference backend is renamed to backends/reference as per
  https://confluence.arm.com/display/MLENG/Pluggable+backends

Change-Id: I27a13c274eb60995dfb459e3c49c0e2f60bcd32c

1 files changed, 58 insertions, 0 deletions

diff --git a/src/backends/reference/workloads/Broadcast.hpp b/src/backends/reference/workloads/Broadcast.hpp
new file mode 100644
index 0000000000..e92ed0598d
--- /dev/null
+++ b/src/backends/reference/workloads/Broadcast.hpp
@@ -0,0 +1,58 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include <armnn/Tensor.hpp>
+
+#include <functional>
+
+namespace armnn
+{
+
+struct BroadcastLoop
+{
+    BroadcastLoop(const TensorShape& inShape0, const TensorShape& inShape1, const TensorShape& outShape);
+
+    unsigned int GetNumDimensions()
+    {
+        return static_cast<unsigned int>(m_DimData.size());
+    }
+
+    template <typename T0, typename T1, typename U, typename Func>
+    void Unroll(Func operationFunc,
+                unsigned int dimension,
+                const T0* inData0,
+                const T1* inData1,
+                U* outData)
+    {
+        if (dimension >= GetNumDimensions())
+        {
+            *outData = operationFunc(*inData0, *inData1);
+            return;
+        }
+
+        for (unsigned int i = 0; i < m_DimData[dimension].m_DimSize; i++)
+        {
+            Unroll(operationFunc, dimension + 1, inData0, inData1, outData);
+
+            inData0 += m_DimData[dimension].m_Stride1;
+            inData1 += m_DimData[dimension].m_Stride2;
+            outData += m_DimData[dimension].m_StrideOut;
+        }
+    }
+
+private:
+    // Struct to hold the dimension data.
+    struct BroadcastDimensionData
+    {
+        unsigned int m_DimSize;
+        unsigned int m_StrideOut;
+        unsigned int m_Stride1;
+        unsigned int m_Stride2;
+    };
+
+    std::vector<BroadcastDimensionData> m_DimData;
+};
+
+} //namespace armnn
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