IVGCVSW-3830 Add NEON workload for RSQRT

Signed-off-by: Aron Virginas-Tar <Aron.Virginas-Tar@arm.com>
Change-Id: Ida590b7d28dbee40e496794c42b682d740427cca
diff --git a/src/backends/neon/test/NeonCreateWorkloadTests.cpp b/src/backends/neon/test/NeonCreateWorkloadTests.cpp
index 643ecd5..6a4f612 100644
--- a/src/backends/neon/test/NeonCreateWorkloadTests.cpp
+++ b/src/backends/neon/test/NeonCreateWorkloadTests.cpp
@@ -181,6 +181,36 @@
                                       DataType::QuantisedAsymm8>();
 }
 
+template <typename WorkloadType,
+          typename DescriptorType,
+          typename LayerType,
+          armnn::DataType DataType>
+static void NeonCreateElementwiseUnaryWorkloadTest()
+{
+    Graph graph;
+    NeonWorkloadFactory factory =
+        NeonWorkloadFactoryHelper::GetFactory(NeonWorkloadFactoryHelper::GetMemoryManager());
+
+    auto workload = CreateElementwiseUnaryWorkloadTest
+        <WorkloadType, DescriptorType, LayerType, DataType>(factory, graph);
+
+    DescriptorType queueDescriptor = workload->GetData();
+
+    auto inputHandle  = boost::polymorphic_downcast<IAclTensorHandle*>(queueDescriptor.m_Inputs[0]);
+    auto outputHandle = boost::polymorphic_downcast<IAclTensorHandle*>(queueDescriptor.m_Outputs[0]);
+
+    BOOST_TEST(TestNeonTensorHandleInfo(inputHandle, TensorInfo({2, 3}, DataType)));
+    BOOST_TEST(TestNeonTensorHandleInfo(outputHandle, TensorInfo({2, 3}, DataType)));
+}
+
+BOOST_AUTO_TEST_CASE(CreateRsqrtFloat32Workload)
+{
+    NeonCreateElementwiseUnaryWorkloadTest<NeonRsqrtWorkload,
+                                           RsqrtQueueDescriptor,
+                                           RsqrtLayer,
+                                           DataType::Float32>();
+}
+
 template <typename BatchNormalizationWorkloadType, typename armnn::DataType DataType>
 static void NeonCreateBatchNormalizationWorkloadTest(DataLayout dataLayout)
 {
diff --git a/src/backends/neon/test/NeonLayerTests.cpp b/src/backends/neon/test/NeonLayerTests.cpp
index d9f78e8..0566567 100644
--- a/src/backends/neon/test/NeonLayerTests.cpp
+++ b/src/backends/neon/test/NeonLayerTests.cpp
@@ -859,6 +859,12 @@
 
 ARMNN_AUTO_TEST_CASE(AbsZero, AbsZeroTest<DataType::Float32>)
 
+// Rsqrt
+ARMNN_AUTO_TEST_CASE(Rsqrt2d, Rsqrt2dTest<DataType::Float32>)
+ARMNN_AUTO_TEST_CASE(Rsqrt3d, Rsqrt3dTest<DataType::Float32>)
+ARMNN_AUTO_TEST_CASE(RsqrtZero, RsqrtZeroTest<DataType::Float32>)
+ARMNN_AUTO_TEST_CASE(RsqrtNegative, RsqrtNegativeTest<DataType::Float32>)
+
 #if defined(ARMNNREF_ENABLED)
 
 // The ARMNN_COMPARE_REF_AUTO_TEST_CASE and the ARMNN_COMPARE_REF_FIXTURE_TEST_CASE test units are not available