IVGCVSW-6806 Add Unidirectional Sequence Lstm support to Neon

 * Corrected TensorInfo order for IsUnidirectionalSequenceLstmSupported
    * outputStateOut TensorInfo is not optional.
    * cellStateOut TensorInfo is not optional.
    * TensorInfo Order matches other QLSTM/LSTM layers.
 * Added missing parameters to UnidirectionalSequenceLstmOperator for
   delegate.
 * Added quantized UnidirectionalSequenceLstm support to Neon

!android-nn-driver:7457

Signed-off-by: Mike Kelly <mike.kelly@arm.com>
Change-Id: I26dde1bb96793dd25eb9081ca5ae5f63752288c4

1 files changed, 14 insertions, 1 deletions

diff --git a/src/backends/neon/NeonWorkloadFactory.cpp b/src/backends/neon/NeonWorkloadFactory.cpp
index 7d94dafc9a..c83e8b3e6d 100644
--- a/src/backends/neon/NeonWorkloadFactory.cpp
+++ b/src/backends/neon/NeonWorkloadFactory.cpp
@@ -558,7 +558,20 @@ std::unique_ptr<IWorkload> NeonWorkloadFactory::CreateWorkload(LayerType type,
         case LayerType::UnidirectionalSequenceLstm :
         {
             auto desc = PolymorphicDowncast<const UnidirectionalSequenceLstmQueueDescriptor*>(&descriptor);
-            return MakeWorkloadHelper<NeonUnidirectionalSequenceLstmFloatWorkload, NullWorkload>(*desc, info);
+
+            if ((info.m_InputTensorInfos[0].GetDataType() == armnn::DataType::Float32) &&
+                (info.m_InputTensorInfos[1].GetDataType() == armnn::DataType::Float32) &&
+                (info.m_InputTensorInfos[2].GetDataType() == armnn::DataType::Float32) &&
+                (info.m_OutputTensorInfos[0].GetDataType() == armnn::DataType::Float32) &&
+                (info.m_OutputTensorInfos[1].GetDataType() == armnn::DataType::Float32) &&
+                (info.m_OutputTensorInfos[2].GetDataType() == armnn::DataType::Float32))
+            {
+                return std::make_unique<NeonUnidirectionalSequenceLstmFloatWorkload>(*desc, info);
+            }
+            else
+            {
+                return std::make_unique<NeonUnidirectionalSequenceLstmWorkload>(*desc, info);
+            }
         }
         default:
             return nullptr;