5 files changed, 56 insertions, 2 deletions
diff --git a/src/armnnSerializer/ArmnnSchema.fbs b/src/armnnSerializer/ArmnnSchema.fbs
index 552c2cc056..9b23d8508c 100644
--- a/src/armnnSerializer/ArmnnSchema.fbs
+++ b/src/armnnSerializer/ArmnnSchema.fbs
@@ -101,7 +101,8 @@ enum LayerType : uint {
     Equal = 17,
     Maximum = 18,
     Normalization = 19,
-    Pad = 20
+    Pad = 20,
+    Rsqrt = 21
 }
 
 // Base layer table to be used as part of other layers
@@ -334,6 +335,10 @@ table PadDescriptor {
     padList:[uint];
 }
 
+table RsqrtLayer {
+    base:LayerBase;
+}
+
 union Layer {
     ActivationLayer,
     AdditionLayer,
@@ -355,7 +360,8 @@ union Layer {
     EqualLayer,
     MaximumLayer,
     NormalizationLayer,
-    PadLayer
+    PadLayer,
+    RsqrtLayer
 }
 
 table AnyLayer {
diff --git a/src/armnnSerializer/Serializer.cpp b/src/armnnSerializer/Serializer.cpp
index 868a36d42e..5f9ca13198 100644
--- a/src/armnnSerializer/Serializer.cpp
+++ b/src/armnnSerializer/Serializer.cpp
@@ -379,6 +379,14 @@ void SerializerVisitor::VisitReshapeLayer(const armnn::IConnectableLayer* layer,
     CreateAnyLayer(flatBufferReshapeLayer.o, serializer::Layer::Layer_ReshapeLayer);
 }
 
+void SerializerVisitor::VisitRsqrtLayer(const armnn::IConnectableLayer* layer, const char* name)
+{
+    auto fbRsqrtBaseLayer = CreateLayerBase(layer, serializer::LayerType::LayerType_Rsqrt);
+    auto fbRsqrtLayer     = serializer::CreateRsqrtLayer(m_flatBufferBuilder, fbRsqrtBaseLayer);
+
+    CreateAnyLayer(fbRsqrtLayer.o, serializer::Layer::Layer_RsqrtLayer);
+}
+
 // Build FlatBuffer for Softmax Layer
 void SerializerVisitor::VisitSoftmaxLayer(const armnn::IConnectableLayer* layer,
                                           const armnn::SoftmaxDescriptor& softmaxDescriptor,
diff --git a/src/armnnSerializer/Serializer.hpp b/src/armnnSerializer/Serializer.hpp
index ef56c25f2c..6e92a067b6 100644
--- a/src/armnnSerializer/Serializer.hpp
+++ b/src/armnnSerializer/Serializer.hpp
@@ -114,6 +114,9 @@ public:
                            const armnn::ReshapeDescriptor& reshapeDescriptor,
                            const char* name = nullptr) override;
 
+    void VisitRsqrtLayer(const armnn::IConnectableLayer* layer,
+                         const char* name = nullptr) override;
+
     void VisitSoftmaxLayer(const armnn::IConnectableLayer* layer,
                            const armnn::SoftmaxDescriptor& softmaxDescriptor,
                            const char* name = nullptr) override;
diff --git a/src/armnnSerializer/SerializerSupport.md b/src/armnnSerializer/SerializerSupport.md
index a77e8860a2..b9bc0d4479 100644
--- a/src/armnnSerializer/SerializerSupport.md
+++ b/src/armnnSerializer/SerializerSupport.md
@@ -23,6 +23,7 @@ The Arm NN SDK Serializer currently supports the following layers:
 * Permute
 * Pooling2d
 * Reshape
+* Rsqrt
 * Softmax
 * SpaceToBatchNd
 
diff --git a/src/armnnSerializer/test/SerializerTests.cpp b/src/armnnSerializer/test/SerializerTests.cpp
index 110bf0c581..515689a777 100644
--- a/src/armnnSerializer/test/SerializerTests.cpp
+++ b/src/armnnSerializer/test/SerializerTests.cpp
@@ -1021,4 +1021,40 @@ BOOST_AUTO_TEST_CASE(SerializeDeserializePad)
                                             {outputTensorInfo.GetShape()});
 }
 
+BOOST_AUTO_TEST_CASE(SerializeRsqrt)
+{
+    class VerifyRsqrtName : public armnn::LayerVisitorBase<armnn::VisitorNoThrowPolicy>
+    {
+    public:
+        void VisitRsqrtLayer(const armnn::IConnectableLayer*, const char* name) override
+        {
+            BOOST_TEST(name == "rsqrt");
+        }
+    };
+
+    const armnn::TensorInfo tensorInfo({ 3, 1, 2 }, armnn::DataType::Float32);
+
+    armnn::INetworkPtr network = armnn::INetwork::Create();
+    armnn::IConnectableLayer* const inputLayer  = network->AddInputLayer(0);
+    armnn::IConnectableLayer* const rsqrtLayer  = network->AddRsqrtLayer("rsqrt");
+    armnn::IConnectableLayer* const outputLayer = network->AddOutputLayer(0);
+
+    inputLayer->GetOutputSlot(0).Connect(rsqrtLayer->GetInputSlot(0));
+    rsqrtLayer->GetOutputSlot(0).Connect(outputLayer->GetInputSlot(0));
+
+    inputLayer->GetOutputSlot(0).SetTensorInfo(tensorInfo);
+    rsqrtLayer->GetOutputSlot(0).SetTensorInfo(tensorInfo);
+
+    armnn::INetworkPtr deserializedNetwork = DeserializeNetwork(SerializeNetwork(*network));
+    BOOST_CHECK(deserializedNetwork);
+
+    VerifyRsqrtName nameChecker;
+    deserializedNetwork->Accept(nameChecker);
+
+    CheckDeserializedNetworkAgainstOriginal(*network,
+                                            *deserializedNetwork,
+                                            {tensorInfo.GetShape()},
+                                            {tensorInfo.GetShape()});
+}
+
 BOOST_AUTO_TEST_SUITE_END()