IVGCVSW-3236 Extend Ref LSTM with layer normalization support

* Add descriptor values
* Update lstm queue descriptor validate function
* Update lstm workload
* Update isLstmSupported (Cl and Ref), LayerSupportBase, ILayerSupport
* Update lstm layer
* Add unit tests

Signed-off-by: Jan Eilers <jan.eilers@arm.com>
Change-Id: I932175d550facfb342325051eaa7bd2084ebdc18
Signed-off-by: Jan Eilers <jan.eilers@arm.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/armnn/layers/LstmLayer.hpp b/src/armnn/layers/LstmLayer.hpp
index bfea5d8232..584d8e2547 100644
--- a/src/armnn/layers/LstmLayer.hpp
+++ b/src/armnn/layers/LstmLayer.hpp
@@ -11,6 +11,18 @@ namespace armnn
 
 class ScopedCpuTensorHandle;
 
+struct LstmOptLayerNormParameters
+{
+    /// A unique pointer to represent 1D weights tensor with dimensions [num_units].
+    std::unique_ptr<ScopedCpuTensorHandle> m_InputLayerNormWeights;
+    /// A unique pointer to represent 1D weights tensor with dimensions [num_units].
+    std::unique_ptr<ScopedCpuTensorHandle> m_ForgetLayerNormWeights;
+    /// A unique pointer to represent 1D weights tensor with dimensions [num_units].
+    std::unique_ptr<ScopedCpuTensorHandle> m_CellLayerNormWeights;
+    /// A unique pointer to represent 1D weights tensor with dimensions [num_units].
+    std::unique_ptr<ScopedCpuTensorHandle> m_OutputLayerNormWeights;
+};
+
 struct LstmOptCifgParameters
 {
     /// A unique pointer to represent 2D weights tensor with dimensions [input_size, num_units].
@@ -70,6 +82,7 @@ public:
     LstmOptCifgParameters m_CifgParameters;
     LstmOptProjectionParameters m_ProjectionParameters;
     LstmOptPeepholeParameters m_PeepholeParameters;
+    LstmOptLayerNormParameters m_LayerNormParameters;
 
     /// Makes a workload for the LSTM type.
     /// @param [in] graph The graph where this layer can be found.