IVGCVSW-3231 Add reference workload support for SpaceToDepth

* Added reference workload for SpaceToDepth
* Added unit tests for float32 & uint8
* Minor sort refactoring to RefWorkloads.hpp to alphabetical order

Change-Id: I2e01f8101650e2aae102a8a32bc0064f067141ab
Signed-off-by: Keith Davis <keith.davis@arm.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/src/backends/reference/RefLayerSupport.cpp b/src/backends/reference/RefLayerSupport.cpp
index 077aa1ce3a..a1807819e3 100644
--- a/src/backends/reference/RefLayerSupport.cpp
+++ b/src/backends/reference/RefLayerSupport.cpp
@@ -1282,6 +1282,33 @@ bool RefLayerSupport::IsSpaceToBatchNdSupported(const TensorInfo& input,
     return supported;
 }
 
+bool RefLayerSupport::IsSpaceToDepthSupported(const TensorInfo& input,
+                             const TensorInfo& output,
+                             const SpaceToDepthDescriptor& descriptor,
+                             Optional<std::string&> reasonIfUnsupported) const
+{
+
+    ignore_unused(descriptor);
+    bool supported = true;
+
+    std::array<DataType,2> supportedTypes =
+    {
+        DataType::Float32,
+        DataType::QuantisedAsymm8,
+    };
+
+    supported &= CheckSupportRule(TypeAnyOf(input, supportedTypes), reasonIfUnsupported,
+        "Reference SpaceToDepth: input type not supported");
+
+    supported &= CheckSupportRule(TypeAnyOf(output, supportedTypes), reasonIfUnsupported,
+        "Reference SpaceToDepth: output type not supported");
+
+    supported &= CheckSupportRule(TypesAreEqual(input, output), reasonIfUnsupported,
+        "Reference SpaceToDepth: input and output types are mismatched");
+
+    return supported;
+}
+
 bool RefLayerSupport::IsSplitterSupported(const TensorInfo& input,
                                           const ViewsDescriptor& descriptor,
                                           Optional<std::string&> reasonIfUnsupported) const