IVGCVSW-4259 Add frontend and reference workload for UnaryOperationLayer

* Added new layer named ElementwiseUnary
* Deprecated existing Abs/Rsqrt layer functions
* Updated existing Abs/Rsqrt test infrastructure to use new layer
* Added boilerplate for new Exp,Neg,Sqrt elemwise op layers
* AbsQuantize test removed pending future commit
* Serialization support added

!android-nn-driver:2550

Change-Id: Ic595c645925e17b45db568187fd05646daf2e87f
Signed-off-by: josh minor <josh.minor@arm.com>

1 files changed, 51 insertions, 2 deletions

diff --git a/src/armnnDeserializer/Deserializer.cpp b/src/armnnDeserializer/Deserializer.cpp
index 6077d057c4..99ee0b5b2d 100644
--- a/src/armnnDeserializer/Deserializer.cpp
+++ b/src/armnnDeserializer/Deserializer.cpp
@@ -203,6 +203,7 @@ m_ParserFunctions(Layer_MAX+1, &Deserializer::ParseUnsupportedLayer)
     m_ParserFunctions[Layer_DequantizeLayer]             = &Deserializer::ParseDequantize;
     m_ParserFunctions[Layer_DetectionPostProcessLayer]   = &Deserializer::ParseDetectionPostProcess;
     m_ParserFunctions[Layer_DivisionLayer]               = &Deserializer::ParseDivision;
+    m_ParserFunctions[Layer_ElementwiseUnaryLayer]       = &Deserializer::ParseElementwiseUnary;
     m_ParserFunctions[Layer_EqualLayer]                  = &Deserializer::ParseEqual;
     m_ParserFunctions[Layer_FullyConnectedLayer]         = &Deserializer::ParseFullyConnected;
     m_ParserFunctions[Layer_FloorLayer]                  = &Deserializer::ParseFloor;
@@ -457,6 +458,25 @@ armnn::ComparisonOperation ToComparisonOperation(armnnSerializer::ComparisonOper
     }
 }
 
+armnn::UnaryOperation ToUnaryOperation(armnnSerializer::UnaryOperation operation)
+{
+    switch (operation)
+    {
+        case armnnSerializer::UnaryOperation::UnaryOperation_Abs:
+            return armnn::UnaryOperation::Abs;
+        case armnnSerializer::UnaryOperation::UnaryOperation_Rsqrt:
+            return armnn::UnaryOperation::Rsqrt;
+        case armnnSerializer::UnaryOperation::UnaryOperation_Sqrt:
+            return armnn::UnaryOperation::Sqrt;
+        case armnnSerializer::UnaryOperation::UnaryOperation_Exp:
+            return armnn::UnaryOperation::Exp;
+        case armnnSerializer::UnaryOperation::UnaryOperation_Neg:
+            return armnn::UnaryOperation::Neg;
+        default:
+            throw armnn::InvalidArgumentException("Unary operation unknown");
+    }
+}
+
 armnn::ResizeMethod ToResizeMethod(armnnSerializer::ResizeMethod method)
 {
     switch (method)
@@ -926,7 +946,8 @@ void Deserializer::ParseAbs(armnnDeserializer::Deserializer::GraphPtr graph, uns
 
     auto layerName = GetLayerName(graph, layerIndex);
 
-    IConnectableLayer* layer = m_Network->AddAbsLayer(layerName.c_str());
+    armnn::ElementwiseUnaryDescriptor descriptor(armnn::UnaryOperation::Abs);
+    IConnectableLayer* layer = m_Network->AddElementwiseUnaryLayer(descriptor, layerName.c_str());
     armnn::TensorInfo outputTensorInfo = ToTensorInfo(outputs[0]);
     layer->GetOutputSlot(0).SetTensorInfo(outputTensorInfo);
 
@@ -1496,6 +1517,33 @@ void Deserializer::ParseComparison(GraphPtr graph, unsigned int layerIndex)
     RegisterOutputSlots(graph, layerIndex, layer);
 }
 
+void Deserializer::ParseElementwiseUnary(GraphPtr graph, unsigned int layerIndex)
+{
+    CHECK_LAYERS(graph, 0, layerIndex);
+    CHECK_LOCATION();
+
+    auto inputs = GetInputs(graph, layerIndex);
+    CHECK_VALID_SIZE(inputs.size(), 1);
+
+    auto outputs = GetOutputs(graph, layerIndex);
+    CHECK_VALID_SIZE(outputs.size(), 1);
+
+    auto fbLayer      = graph->layers()->Get(layerIndex)->layer_as_ElementwiseUnaryLayer();
+    auto fbDescriptor = fbLayer->descriptor();
+
+    armnn::ElementwiseUnaryDescriptor descriptor;
+    descriptor.m_Operation = ToUnaryOperation(fbDescriptor->operation());
+
+    const std::string& layerName = GetLayerName(graph, layerIndex);
+    IConnectableLayer* layer     = m_Network->AddElementwiseUnaryLayer(descriptor, layerName.c_str());
+
+    armnn::TensorInfo outputTensorInfo = ToTensorInfo(outputs[0]);
+    layer->GetOutputSlot(0).SetTensorInfo(outputTensorInfo);
+
+    RegisterInputSlots(graph, layerIndex, layer);
+    RegisterOutputSlots(graph, layerIndex, layer);
+}
+
 void Deserializer::ParseConcat(GraphPtr graph, unsigned int layerIndex)
 {
     CHECK_LAYERS(graph, 0, layerIndex);
@@ -2135,8 +2183,9 @@ void Deserializer::ParseRsqrt(GraphPtr graph, unsigned int layerIndex)
     CHECK_VALID_SIZE(outputs.size(), 1);
 
     auto layerName = GetLayerName(graph, layerIndex);
-    IConnectableLayer* layer = m_Network->AddRsqrtLayer(layerName.c_str());
 
+    armnn::ElementwiseUnaryDescriptor descriptor(armnn::UnaryOperation::Rsqrt);
+    IConnectableLayer* layer = m_Network->AddElementwiseUnaryLayer(descriptor, layerName.c_str());
     armnn::TensorInfo outputTensorInfo = ToTensorInfo(outputs[0]);
     layer->GetOutputSlot(0).SetTensorInfo(outputTensorInfo);