1 files changed, 100 insertions, 0 deletions
diff --git a/src/backends/cl/workloads/ClConcatWorkload.cpp b/src/backends/cl/workloads/ClConcatWorkload.cpp
new file mode 100644
index 0000000000..ee4ba6b65f
--- /dev/null
+++ b/src/backends/cl/workloads/ClConcatWorkload.cpp
@@ -0,0 +1,100 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+#include "ClConcatWorkload.hpp"
+#include "ClWorkloadUtils.hpp"
+#include <aclCommon/ArmComputeTensorUtils.hpp>
+#include <backendsCommon/CpuTensorHandle.hpp>
+#include <cl/ClTensorHandle.hpp>
+#include <cl/ClLayerSupport.hpp>
+
+#include <arm_compute/core/Types.h>
+
+#include <boost/polymorphic_pointer_cast.hpp>
+
+namespace armnn
+{
+using namespace armcomputetensorutils;
+
+namespace
+{
+size_t CalcAxis(const MergerDescriptor& desc)
+{
+    return (desc.GetNumDimensions() - desc.GetConcatAxis()) - 1;
+}
+} //namespace
+
+arm_compute::Status ClConcatWorkloadValidate(const std::vector<const TensorInfo*>& inputs,
+                                             const TensorInfo& output,
+                                             const MergerDescriptor& descriptor)
+{
+    std::vector<arm_compute::TensorInfo> aclInputs;
+    for (const TensorInfo* input : inputs)
+    {
+        arm_compute::TensorInfo aclInputInfo = BuildArmComputeTensorInfo(*input, armnn::DataLayout::NCHW);
+        aclInputs.emplace_back(aclInputInfo);
+    }
+    const arm_compute::TensorInfo aclOutputInfo = BuildArmComputeTensorInfo(output);
+    std::vector<arm_compute::ITensorInfo*> aclInputPtrs;
+    for (arm_compute::ITensorInfo& input : aclInputs)
+    {
+        aclInputPtrs.emplace_back(&input);
+    }
+
+    size_t aclAxis = CalcAxis(descriptor);
+    return arm_compute::CLConcatenateLayer::validate(aclInputPtrs, &aclOutputInfo, aclAxis);
+}
+
+ClConcatWorkload::ClConcatWorkload(const MergerQueueDescriptor& descriptor, const WorkloadInfo& info)
+: BaseWorkload<MergerQueueDescriptor>(descriptor, info)
+{
+    bool allInputsAreSubtensors = true;
+
+    // Check that all inputs are sub-tensors
+    for (auto input : descriptor.m_Inputs)
+    {
+        if (!input->GetParent())
+        {
+            // Non sub-tensor input found so we need to execute the merger function
+            allInputsAreSubtensors = false;
+            break;
+        }
+    }
+
+    if (allInputsAreSubtensors)
+    {
+        // Can skip configuring the merger function since it's not executed
+        return;
+    }
+
+    std::vector<arm_compute::ICLTensor *> aclInputs;
+    for (auto input : m_Data.m_Inputs)
+    {
+        arm_compute::ICLTensor& aclInput  = boost::polymorphic_pointer_downcast<IClTensorHandle>(input)->GetTensor();
+        aclInputs.emplace_back(&aclInput);
+    }
+    arm_compute::ICLTensor& output = boost::polymorphic_pointer_downcast<IClTensorHandle>(
+                                                                         m_Data.m_Outputs[0])->GetTensor();
+
+    // Create the layer function
+    m_Layer.reset(new arm_compute::CLConcatenateLayer());
+
+    // Configure input and output tensors
+    size_t aclAxis = CalcAxis(descriptor.m_Parameters);
+    m_Layer->configure(aclInputs, &output, aclAxis);
+
+    // Prepare
+    m_Layer->prepare();
+}
+
+void ClConcatWorkload::Execute() const
+{
+    if (m_Layer)
+    {
+        ARMNN_SCOPED_PROFILING_EVENT_CL("ClConcatWorkload_Execute");
+        m_Layer->run();
+    }
+}
+
+} //namespace armnn
+\ No newline at end of file