IVGCVSW-3813 Add Unary Elementwise Operation 'NEG' support to the android-nn-driver

* Implemented ClNegWorkload
* Implemented NeonNegWorkload
* Enabled 'NEG' operator on CL and Neon as well as Ref
* Implemented unit tests for 'NEG' operator

Signed-off-by: Sadik Armagan <sadik.armagan@arm.com>
Change-Id: I3d7a892692716636cae6bdf8ddd238e3d1ea064f

4 files changed, 74 insertions, 0 deletions

diff --git a/src/backends/neon/workloads/CMakeLists.txt b/src/backends/neon/workloads/CMakeLists.txt
index a932f8b852..8160710f65 100644
--- a/src/backends/neon/workloads/CMakeLists.txt
+++ b/src/backends/neon/workloads/CMakeLists.txt
@@ -56,6 +56,8 @@ list(APPEND armnnNeonBackendWorkloads_sources
     NeonMultiplicationWorkload.hpp
     NeonDivisionWorkload.cpp
     NeonDivisionWorkload.hpp
+    NeonNegWorkload.cpp
+    NeonNegWorkload.hpp
     NeonNormalizationFloatWorkload.cpp
     NeonNormalizationFloatWorkload.hpp
     NeonPadWorkload.cpp
diff --git a/src/backends/neon/workloads/NeonNegWorkload.cpp b/src/backends/neon/workloads/NeonNegWorkload.cpp
new file mode 100644
index 0000000000..afe05583fd
--- /dev/null
+++ b/src/backends/neon/workloads/NeonNegWorkload.cpp
@@ -0,0 +1,43 @@
+//
+// Copyright © 2020 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include "NeonNegWorkload.hpp"
+
+#include "NeonWorkloadUtils.hpp"
+
+#include <aclCommon/ArmComputeTensorHandle.hpp>
+#include <aclCommon/ArmComputeTensorUtils.hpp>
+
+#include <boost/cast.hpp>
+
+namespace armnn
+{
+
+arm_compute::Status NeonNegWorkloadValidate(const TensorInfo& input, const TensorInfo& output)
+{
+    const arm_compute::TensorInfo aclInput  = armcomputetensorutils::BuildArmComputeTensorInfo(input);
+    const arm_compute::TensorInfo aclOutput = armcomputetensorutils::BuildArmComputeTensorInfo(output);
+
+    return arm_compute::NENegLayer::validate(&aclInput, &aclOutput);
+}
+
+NeonNegWorkload::NeonNegWorkload(const ElementwiseUnaryQueueDescriptor& descriptor, const WorkloadInfo& info)
+    : BaseWorkload<ElementwiseUnaryQueueDescriptor>(descriptor, info)
+{
+    m_Data.ValidateInputsOutputs("NeonNegWorkload", 1, 1);
+
+    arm_compute::ITensor& input  = boost::polymorphic_downcast<IAclTensorHandle*>(m_Data.m_Inputs[0])->GetTensor();
+    arm_compute::ITensor& output = boost::polymorphic_downcast<IAclTensorHandle*>(m_Data.m_Outputs[0])->GetTensor();
+
+    m_NegLayer.configure(&input, &output);
+}
+
+void NeonNegWorkload::Execute() const
+{
+    ARMNN_SCOPED_PROFILING_EVENT_NEON("NeonNegWorkload_Execute");
+    m_NegLayer.run();
+}
+
+} // namespace armnn
diff --git a/src/backends/neon/workloads/NeonNegWorkload.hpp b/src/backends/neon/workloads/NeonNegWorkload.hpp
new file mode 100644
index 0000000000..7b2ed17a3e
--- /dev/null
+++ b/src/backends/neon/workloads/NeonNegWorkload.hpp
@@ -0,0 +1,28 @@
+//
+// Copyright © 2020 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+#include <backendsCommon/Workload.hpp>
+
+#include <arm_compute/core/Error.h>
+#include <arm_compute/runtime/NEON/functions/NEElementwiseUnaryLayer.h>
+
+namespace armnn
+{
+
+arm_compute::Status NeonNegWorkloadValidate(const TensorInfo& input, const TensorInfo& output);
+
+class NeonNegWorkload : public BaseWorkload<ElementwiseUnaryQueueDescriptor>
+{
+public:
+    NeonNegWorkload(const ElementwiseUnaryQueueDescriptor& descriptor, const WorkloadInfo& info);
+    virtual void Execute() const override;
+
+private:
+    mutable arm_compute::NENegLayer m_NegLayer;
+};
+
+} // namespace armnn
diff --git a/src/backends/neon/workloads/NeonWorkloads.hpp b/src/backends/neon/workloads/NeonWorkloads.hpp
index 52cd76f14b..e28d120de7 100644
--- a/src/backends/neon/workloads/NeonWorkloads.hpp
+++ b/src/backends/neon/workloads/NeonWorkloads.hpp
@@ -31,6 +31,7 @@
 #include "NeonConcatWorkload.hpp"
 #include "NeonMinimumWorkload.hpp"
 #include "NeonMultiplicationWorkload.hpp"
+#include "NeonNegWorkload.hpp"
 #include "NeonNormalizationFloatWorkload.hpp"
 #include "NeonPadWorkload.hpp"
 #include "NeonPermuteWorkload.hpp"