IVGCVSW-2131 Implementation of StridedSlice operation

   * Added ACl Implementation to ArmNN
   * Added helper function for setting CL Strided Slice arguments

Change-Id: Ie10d387fdb054027ea9b8782743d270bb72949c1

1 files changed, 92 insertions, 0 deletions

diff --git a/src/backends/cl/workloads/ClStridedSliceWorkload.cpp b/src/backends/cl/workloads/ClStridedSliceWorkload.cpp
new file mode 100644
index 0000000000..e51fa34233
--- /dev/null
+++ b/src/backends/cl/workloads/ClStridedSliceWorkload.cpp
@@ -0,0 +1,92 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include "ClStridedSliceWorkload.hpp"
+
+#include "ClWorkloadUtils.hpp"
+
+#include <aclCommon/ArmComputeUtils.hpp>
+#include <aclCommon/ArmComputeTensorUtils.hpp>
+
+#include <backendsCommon/CpuTensorHandle.hpp>
+
+#include <cl/ClLayerSupport.hpp>
+#include <cl/ClTensorHandle.hpp>
+#include <cl/ClLayerSupport.hpp>
+
+namespace armnn
+{
+
+using namespace armcomputetensorutils;
+
+arm_compute::Status ClStridedSliceWorkloadValidate(const TensorInfo& input,
+                                                   const TensorInfo& output,
+                                                   const StridedSliceDescriptor& descriptor)
+{
+    const arm_compute::TensorInfo aclInputInfo = BuildArmComputeTensorInfo(input, descriptor.m_DataLayout);
+    const arm_compute::TensorInfo aclOutputInfo = BuildArmComputeTensorInfo(output, descriptor.m_DataLayout);
+
+    arm_compute::Coordinates starts;
+    arm_compute::Coordinates ends;
+    arm_compute::Coordinates strides;
+
+    std::tie(starts, ends, strides) = SetClStridedSliceData(descriptor.m_Begin, descriptor.m_End, descriptor.m_Stride);
+
+    int32_t begin_mask = descriptor.m_BeginMask;
+    int32_t end_mask = descriptor.m_EndMask;
+    int32_t shrink_axis_mask = descriptor.m_ShrinkAxisMask;
+
+    return arm_compute::CLStridedSlice::validate(&aclInputInfo,
+                                        &aclOutputInfo,
+                                        starts,
+                                        ends,
+                                        strides,
+                                        begin_mask,
+                                        end_mask,
+                                        shrink_axis_mask);
+}
+
+ClStridedSliceWorkload::ClStridedSliceWorkload(const StridedSliceQueueDescriptor& descriptor,
+                                               const WorkloadInfo& info)
+    : BaseWorkload<StridedSliceQueueDescriptor>(descriptor, info)
+{
+    m_Data.ValidateInputsOutputs("ClStridedSliceWorkload", 1, 1);
+
+    arm_compute::ICLTensor& input = static_cast<IClTensorHandle*>(m_Data.m_Inputs[0])->GetTensor();
+    arm_compute::ICLTensor& output = static_cast<IClTensorHandle*>(m_Data.m_Outputs[0])->GetTensor();
+
+    arm_compute::Coordinates starts;
+    arm_compute::Coordinates ends;
+    arm_compute::Coordinates strides;
+
+    std::tie(starts, ends, strides) = SetClStridedSliceData(m_Data.m_Parameters.m_Begin,
+                                                            m_Data.m_Parameters.m_End,
+                                                            m_Data.m_Parameters.m_Stride);
+
+    int32_t begin_mask = m_Data.m_Parameters.m_BeginMask;
+    int32_t end_mask = m_Data.m_Parameters.m_EndMask;
+    int32_t shrink_axis_mask = m_Data.m_Parameters.m_ShrinkAxisMask;
+
+    arm_compute::DataLayout aclDataLayout = ConvertDataLayout(m_Data.m_Parameters.m_DataLayout);
+    input.info()->set_data_layout(aclDataLayout);
+    output.info()->set_data_layout(aclDataLayout);
+
+    m_StridedSliceLayer.configure(&input,
+                                  &output,
+                                  starts,
+                                  ends,
+                                  strides,
+                                  begin_mask,
+                                  end_mask,
+                                  shrink_axis_mask);
+}
+
+void ClStridedSliceWorkload::Execute() const
+{
+    ARMNN_SCOPED_PROFILING_EVENT_CL("ClStridedSliceWorkload_Execute");
+    RunClFunction(m_StridedSliceLayer, CHECK_LOCATION());
+}
+
+} //namespace armnn