IVGCVSW-5410 Add front-end support for CAST

IVGCVSW-5415 Add TfLiteParser support for CAST

 * Added front end support for CAST, including support in the
Reference workload, Serialization, Deserializtion, Unit tests, and
TfLiteParser.

Signed-off-by: mathad01 <matthew.haddon@arm.com>
Change-Id: Iaf670ca5912a21ed6bc84f7f83a68b42154846bb

1 files changed, 40 insertions, 0 deletions

diff --git a/src/backends/reference/workloads/RefCastWorkload.cpp b/src/backends/reference/workloads/RefCastWorkload.cpp
new file mode 100644
index 0000000000..7080415e5d
--- /dev/null
+++ b/src/backends/reference/workloads/RefCastWorkload.cpp
@@ -0,0 +1,40 @@
+//
+// Copyright © 2021 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include "RefCastWorkload.hpp"
+#include "RefWorkloadUtils.hpp"
+#include <armnnUtils/FloatingPointConverter.hpp>
+#include <ResolveType.hpp>
+#include "Encoders.hpp"
+#include "Decoders.hpp"
+
+namespace
+{
+    void Cast(armnn::Decoder<float>& in, armnn::Encoder<float>& out, const uint32_t numElements )
+    {
+        for (unsigned int i = 0; i < numElements; i++)
+        {
+            out.Set(in.Get());
+            ++in;
+            ++out;
+        }
+    }
+}
+
+namespace armnn
+{
+
+    void RefCastWorkload::Execute() const
+    {
+        ARMNN_SCOPED_PROFILING_EVENT(Compute::CpuRef, "RefCastWorkload_Execute");
+        const TensorInfo& inputInfo = GetTensorInfo(m_Data.m_Inputs[0]);
+        const TensorInfo& outputInfo = GetTensorInfo(m_Data.m_Outputs[0]);
+
+        Cast(*MakeDecoder<float>(inputInfo, m_Data.m_Inputs[0]->Map()),
+             *MakeEncoder<float>(outputInfo, m_Data.m_Outputs[0]->Map()),
+             inputInfo.GetNumElements());
+    }
+
+} //namespace armnn
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