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/armnn/layers/CastLayer.hpp b/src/armnn/layers/CastLayer.hpp
new file mode 100644
index 0000000000..8a9ea43934
--- /dev/null
+++ b/src/armnn/layers/CastLayer.hpp
@@ -0,0 +1,40 @@
+//
+// Copyright © 2021 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+#include "Layer.hpp"
+
+namespace armnn
+{
+
+/// This layer represents a cast operation
+class CastLayer : public Layer
+{
+public:
+    /// Makes a workload for the Cast type.
+    /// @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 IWorkloadFactory &factory) const override;
+
+    /// Creates a dynamically-allocated copy of this layer.
+    /// @param [in] graph The graph into which this layer is being cloned.
+    CastLayer* Clone(Graph& graph) const override;
+
+    /// Check if the input tensor shape(s)
+    /// will lead to a valid configuration of @ref ConvertFp16ToFp32Layer.
+    /// @param [in] shapeInferenceMethod Indicates if output shape shall be overwritten or just validated.
+    void ValidateTensorShapesFromInputs() override;
+
+    void Accept(ILayerVisitor& visitor) const override;
+
+protected:
+    /// Constructor to create a CastLayer.
+    CastLayer(const char *name);
+
+    /// Default destructor
+    ~CastLayer() = default;
+};
+} // namespace armnn
\ No newline at end of file