IVGCVSW-3722 Add front end support for ArgMinMax

Change-Id: I31c5616bea3097f30cde68442d3222e0b0fe2235
Signed-off-by: Nikhil Raj <nikhil.raj@arm.com>

8 files changed, 66 insertions, 0 deletions

diff --git a/src/backends/backendsCommon/LayerSupportBase.cpp b/src/backends/backendsCommon/LayerSupportBase.cpp
index 464ec4e108..a8d1eaddc3 100644
--- a/src/backends/backendsCommon/LayerSupportBase.cpp
+++ b/src/backends/backendsCommon/LayerSupportBase.cpp
@@ -57,6 +57,13 @@ bool LayerSupportBase::IsAdditionSupported(const TensorInfo& input0,
     return DefaultLayerSupport(__func__, __FILE__, __LINE__, reasonIfUnsupported);
 }
 
+bool LayerSupportBase::IsArgMinMaxSupported(const armnn::TensorInfo &input, const armnn::TensorInfo &output,
+                                            const armnn::ArgMinMaxDescriptor& descriptor,
+                                            armnn::Optional<std::string &> reasonIfUnsupported) const
+{
+    return DefaultLayerSupport(__func__, __FILE__, __LINE__, reasonIfUnsupported);
+}
+
 bool LayerSupportBase::IsBatchNormalizationSupported(const TensorInfo& input,
                                                      const TensorInfo& output,
                                                      const TensorInfo& mean,
diff --git a/src/backends/backendsCommon/LayerSupportBase.hpp b/src/backends/backendsCommon/LayerSupportBase.hpp
index 3cf3d4e672..25dbdf2906 100644
--- a/src/backends/backendsCommon/LayerSupportBase.hpp
+++ b/src/backends/backendsCommon/LayerSupportBase.hpp
@@ -27,6 +27,11 @@ public:
                              const TensorInfo& output,
                              Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const override;
 
+    bool IsArgMinMaxSupported(const TensorInfo& input,
+                              const TensorInfo& output,
+                              const ArgMinMaxDescriptor& descriptor,
+                              Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const override;
+
     bool IsBatchNormalizationSupported(const TensorInfo& input,
                                        const TensorInfo& output,
                                        const TensorInfo& mean,
diff --git a/src/backends/backendsCommon/WorkloadData.cpp b/src/backends/backendsCommon/WorkloadData.cpp
index fed159bd60..e7e6d5235d 100644
--- a/src/backends/backendsCommon/WorkloadData.cpp
+++ b/src/backends/backendsCommon/WorkloadData.cpp
@@ -461,6 +461,29 @@ void ActivationQueueDescriptor::Validate(const WorkloadInfo& workloadInfo) const
     ValidateTensorShapesMatch(inputTensorInfo, outputTensorInfo, descriptorName, "input", "output");
 }
 
+void ArgMinMaxQueueDescriptor::Validate(const WorkloadInfo& workloadInfo) const
+{
+    const std::string descriptorName{"ArgMinMaxQueueDescriptor"};
+
+    ValidateNumInputs(workloadInfo,  descriptorName, 1);
+    ValidateNumOutputs(workloadInfo, descriptorName, 1);
+
+    const TensorInfo& inputTensorInfo  = workloadInfo.m_InputTensorInfos[0];
+    const TensorInfo& outputTensorInfo = workloadInfo.m_OutputTensorInfos[0];
+
+    std::vector<DataType> supportedTypes =
+            {
+                    DataType::Float16,
+                    DataType::Float32,
+                    DataType::QuantisedAsymm8,
+                    DataType::QuantisedSymm16
+            };
+
+    ValidateDataTypes(inputTensorInfo, supportedTypes, descriptorName);
+    ValidateTensorDataTypesMatch(inputTensorInfo, outputTensorInfo, descriptorName, "input", "output");
+    ValidateTensorShapesMatch(inputTensorInfo, outputTensorInfo, descriptorName, "input", "output");
+}
+
 void SoftmaxQueueDescriptor::Validate(const WorkloadInfo& workloadInfo) const
 {
     const std::string descriptorName{"SoftmaxQueueDescriptor"};
diff --git a/src/backends/backendsCommon/WorkloadData.hpp b/src/backends/backendsCommon/WorkloadData.hpp
index a43c7cccdb..751d37fd25 100644
--- a/src/backends/backendsCommon/WorkloadData.hpp
+++ b/src/backends/backendsCommon/WorkloadData.hpp
@@ -132,6 +132,11 @@ struct ActivationQueueDescriptor : QueueDescriptorWithParameters<ActivationDescr
     void Validate(const WorkloadInfo& workloadInfo) const;
 };
 
+struct ArgMinMaxQueueDescriptor : QueueDescriptorWithParameters<ArgMinMaxDescriptor>
+{
+    void Validate(const WorkloadInfo& workloadInfo) const;
+};
+
 // Fully connected layer workload data.
 struct FullyConnectedQueueDescriptor : QueueDescriptorWithParameters<FullyConnectedDescriptor>
 {
diff --git a/src/backends/backendsCommon/WorkloadDataFwd.hpp b/src/backends/backendsCommon/WorkloadDataFwd.hpp
index abee3166f4..d4352c7a8a 100644
--- a/src/backends/backendsCommon/WorkloadDataFwd.hpp
+++ b/src/backends/backendsCommon/WorkloadDataFwd.hpp
@@ -14,6 +14,7 @@ struct SoftmaxQueueDescriptor;
 struct SplitterQueueDescriptor;
 struct ConcatQueueDescriptor;
 struct ActivationQueueDescriptor;
+struct ArgMinMaxQueueDescriptor;
 struct FullyConnectedQueueDescriptor;
 struct PermuteQueueDescriptor;
 struct Pooling2dQueueDescriptor;
diff --git a/src/backends/backendsCommon/WorkloadFactory.cpp b/src/backends/backendsCommon/WorkloadFactory.cpp
index 9d081af8e9..17bd98b349 100644
--- a/src/backends/backendsCommon/WorkloadFactory.cpp
+++ b/src/backends/backendsCommon/WorkloadFactory.cpp
@@ -102,6 +102,20 @@ bool IWorkloadFactory::IsLayerSupported(const BackendId& backendId,
                                         reason);
             break;
         }
+        case LayerType::ArgMinMax:
+        {
+            auto cLayer = boost::polymorphic_downcast<const ArgMinMaxLayer*>(&layer);
+            const ArgMinMaxDescriptor& descriptor = cLayer->GetParameters();
+
+            const TensorInfo& input = layer.GetInputSlot(0).GetConnection()->GetTensorInfo();
+            const TensorInfo& output = layer.GetOutputSlot(0).GetTensorInfo();
+            result = layerSupportObject->IsArgMinMaxSupported(
+                    OverrideDataType(input, dataType),
+                    OverrideDataType(output, dataType),
+                    descriptor,
+                    reason);
+            break;
+        }
         case LayerType::BatchNormalization:
         {
             auto cLayer = boost::polymorphic_downcast<const BatchNormalizationLayer*>(&layer);
@@ -979,6 +993,12 @@ std::unique_ptr<IWorkload> IWorkloadFactory::CreateAddition(const AdditionQueueD
     return std::unique_ptr<IWorkload>();
 }
 
+std::unique_ptr<IWorkload> IWorkloadFactory::CreateArgMinMax(const ArgMinMaxQueueDescriptor& descriptor,
+                                                             const WorkloadInfo& info) const
+{
+    return std::unique_ptr<IWorkload>();
+}
+
 std::unique_ptr<IWorkload> IWorkloadFactory::CreateBatchNormalization(
     const BatchNormalizationQueueDescriptor& descriptor, const WorkloadInfo& info) const
 {
diff --git a/src/backends/backendsCommon/WorkloadFactory.hpp b/src/backends/backendsCommon/WorkloadFactory.hpp
index d0164b202d..6fd334b49c 100644
--- a/src/backends/backendsCommon/WorkloadFactory.hpp
+++ b/src/backends/backendsCommon/WorkloadFactory.hpp
@@ -58,6 +58,9 @@ public:
     virtual std::unique_ptr<IWorkload> CreateAddition(const AdditionQueueDescriptor& descriptor,
                                                       const WorkloadInfo&            info) const;
 
+    virtual std::unique_ptr<IWorkload> CreateArgMinMax(const ArgMinMaxQueueDescriptor& descriptor,
+                                                       const WorkloadInfo&            info) const;
+
     virtual std::unique_ptr<IWorkload> CreateBatchNormalization(const BatchNormalizationQueueDescriptor& descriptor,
                                                                 const WorkloadInfo& info) const;
 
diff --git a/src/backends/backendsCommon/test/IsLayerSupportedTestImpl.hpp b/src/backends/backendsCommon/test/IsLayerSupportedTestImpl.hpp
index caf5e588f7..1dc9e9700f 100644
--- a/src/backends/backendsCommon/test/IsLayerSupportedTestImpl.hpp
+++ b/src/backends/backendsCommon/test/IsLayerSupportedTestImpl.hpp
@@ -391,6 +391,8 @@ DECLARE_LAYER_POLICY_2_PARAM(Activation)
 
 DECLARE_LAYER_POLICY_1_PARAM(Addition)
 
+DECLARE_LAYER_POLICY_2_PARAM(ArgMinMax)
+
 DECLARE_LAYER_POLICY_2_PARAM(BatchNormalization)
 
 DECLARE_LAYER_POLICY_2_PARAM(BatchToSpaceNd)