Add StridedSliceLayerNode to graph API

Signed-off-by: thecha01 <theo.charalambous@arm.com>
Change-Id: I6d6fb2b053c74e35a86841621486bc0cd34b12b3
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/3911
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>

16 files changed, 379 insertions, 0 deletions

diff --git a/arm_compute/core/Types.h b/arm_compute/core/Types.h
index 022e20dadc..c0e0683fe6 100644
--- a/arm_compute/core/Types.h
+++ b/arm_compute/core/Types.h
@@ -1690,6 +1690,44 @@ private:
     bool     _is_scaled;
 };
 
+class StridedSliceLayerInfo
+{
+public:
+    /** Default Constructor
+     *
+     * @param[in] begin_mask       (Optional) If the ith bit of begin_mask is set, starts[i] is ignored and the fullest possible range in that dimension is used instead.
+     * @param[in] end_mask         (Optional) If the ith bit of end_mask is set, ends[i] is ignored and the fullest possible range in that dimension is used instead.
+     * @param[in] shrink_axis_mask (Optional) If the ith bit of shrink_axis_mask is set, it implies that the ith specification shrinks the dimensionality by 1.
+     */
+    StridedSliceLayerInfo(int32_t begin_mask = 0, int32_t end_mask = 0, int32_t shrink_axis_mask = 0)
+        : _begin_mask(begin_mask), _end_mask(end_mask), _shrink_axis_mask(shrink_axis_mask)
+    {
+    }
+
+    /* Get the begin mask value */
+    int32_t begin_mask() const
+    {
+        return _begin_mask;
+    }
+
+    /* Get the end mask value */
+    int32_t end_mask() const
+    {
+        return _end_mask;
+    }
+
+    /* Get the shrink axis mask value */
+    int32_t shrink_axis_mask() const
+    {
+        return _shrink_axis_mask;
+    }
+
+private:
+    int32_t _begin_mask;
+    int32_t _end_mask;
+    int32_t _shrink_axis_mask;
+};
+
 /** Convolution Layer Weights Information class. This class stores the necessary information to compute convolution layer when the weights are already reshaped */
 class WeightsInfo
 {
diff --git a/arm_compute/graph/GraphBuilder.h b/arm_compute/graph/GraphBuilder.h
index 4948f5845e..ff40497667 100644
--- a/arm_compute/graph/GraphBuilder.h
+++ b/arm_compute/graph/GraphBuilder.h
@@ -520,6 +520,19 @@ public:
      * @return Node ID of the created node, EmptyNodeID in case of error
      */
     static NodeID add_stack_node(Graph &g, NodeParams params, const std::vector<NodeIdxPair> &inputs, int axis);
+    /** Adds a strided slice node to the graph
+     *
+     * @param[in] g       Graph to add the node to
+     * @param[in] params  Common node parameters
+     * @param[in] input   Input to the strided slice layer node as a NodeID-Index pair
+     * @param[in] starts  The starts of the dimensions of the input tensor to be sliced. The length must be of rank(input).
+     * @param[in] ends    The ends of the dimensions of the input tensor to be sliced. The length must be of rank(input).
+     * @param[in] strides The strides of the dimensions of the input tensor to be sliced. The length must be of rank(input).
+     * @param[in] info    Contains masks for the starts, ends and strides
+     *
+     * @return Node ID of the created node, EmptyNodeID in case of error
+     */
+    static NodeID add_strided_slice_node(Graph &g, NodeParams params, NodeIdxPair input, Coordinates &starts, Coordinates &ends, BiStrides &strides, StridedSliceLayerInfo info);
     /** Adds an upsample layer to the graph
      *
      * @param[in] g                 Graph to add the node to
diff --git a/arm_compute/graph/TypePrinter.h b/arm_compute/graph/TypePrinter.h
index 281de36bb2..c24f6e159c 100644
--- a/arm_compute/graph/TypePrinter.h
+++ b/arm_compute/graph/TypePrinter.h
@@ -170,6 +170,9 @@ inline ::std::ostream &operator<<(::std::ostream &os, const NodeType &node_type)
         case NodeType::StackLayer:
             os << "StackLayer";
             break;
+        case NodeType::StridedSliceLayer:
+            os << "StridedSliceLayer";
+            break;
         case NodeType::UpsampleLayer:
             os << "UpsampleLayer";
             break;
diff --git a/arm_compute/graph/Types.h b/arm_compute/graph/Types.h
index 82015114ba..bb54b60ec0 100644
--- a/arm_compute/graph/Types.h
+++ b/arm_compute/graph/Types.h
@@ -175,6 +175,7 @@ enum class NodeType
     SliceLayer,
     SplitLayer,
     StackLayer,
+    StridedSliceLayer,
     UpsampleLayer,
     UnaryEltwiseLayer,
     YOLOLayer,
diff --git a/arm_compute/graph/backends/FunctionHelpers.h b/arm_compute/graph/backends/FunctionHelpers.h
index 570e981e98..5b0e7d174c 100644
--- a/arm_compute/graph/backends/FunctionHelpers.h
+++ b/arm_compute/graph/backends/FunctionHelpers.h
@@ -1673,6 +1673,49 @@ std::unique_ptr<arm_compute::IFunction> create_stack_layer(StackLayerNode &node)
 
     return RETURN_UNIQUE_PTR(func);
 }
+
+/** Create a backend slice layer function
+ *
+ * @tparam StridedSliceLayerFunction Backend strided slice function
+ * @tparam TargetInfo                Target-specific information
+ *
+ * @param[in] node Node to create the backend function for
+ *
+ * @return Backend strided slice layer function
+ */
+template <typename StridedSliceLayerFunction, typename TargetInfo>
+std::unique_ptr<IFunction> create_strided_slice_layer(StridedSliceLayerNode &node)
+{
+    validate_node<TargetInfo>(node, 1 /* expected inputs */, 1 /* expected outputs */);
+
+    // Extract IO and info
+    typename TargetInfo::TensorType *input   = get_backing_tensor<TargetInfo>(node.input(0));
+    typename TargetInfo::TensorType *output  = get_backing_tensor<TargetInfo>(node.output(0));
+    Coordinates                      starts  = node.starts();
+    Coordinates                      ends    = node.ends();
+    BiStrides                        strides = node.strides();
+    StridedSliceLayerInfo            info    = node.strided_slice_info();
+
+    ARM_COMPUTE_ERROR_ON(input == nullptr);
+    ARM_COMPUTE_ERROR_ON(output == nullptr);
+
+    // Create and configure function
+    auto func = support::cpp14::make_unique<StridedSliceLayerFunction>();
+    func->configure(input, output, starts, ends, strides, info.begin_mask(), info.end_mask(), info.shrink_axis_mask());
+
+    // Log info
+    ARM_COMPUTE_LOG_GRAPH_INFO("Instantiated "
+                               << node.name()
+                               << " Type: " << node.type()
+                               << " Target: " << TargetInfo::TargetType
+                               << " Data Type: " << input->info()->data_type()
+                               << " Input shape: " << input->info()->tensor_shape()
+                               << " Output shape: " << output->info()->tensor_shape()
+                               << std::endl);
+
+    return RETURN_UNIQUE_PTR(func);
+}
+
 /** Create a backend Upsample layer function
  *
  * @tparam UpsampleLayerFunction Backend Upsample function
diff --git a/arm_compute/graph/backends/ValidateHelpers.h b/arm_compute/graph/backends/ValidateHelpers.h
index 0259bfb930..fcebc5c418 100644
--- a/arm_compute/graph/backends/ValidateHelpers.h
+++ b/arm_compute/graph/backends/ValidateHelpers.h
@@ -556,6 +556,32 @@ Status validate_slice_layer(SliceLayerNode &node)
     return SliceLayer::validate(input, output, starts, ends);
 }
 
+/** Validates a Strided Slice layer node
+ *
+ * @tparam StridedSliceLayer Strided Slice layer function type
+ *
+ * @param[in] node Node to validate
+ *
+ * @return Status
+ */
+template <typename StridedSliceLayer>
+Status validate_strided_slice_layer(StridedSliceLayerNode &node)
+{
+    ARM_COMPUTE_LOG_GRAPH_VERBOSE("Validating StridedSlice node with ID : " << node.id() << " and Name: " << node.name() << std::endl);
+    ARM_COMPUTE_RETURN_ERROR_ON(node.num_inputs() != 1);
+    ARM_COMPUTE_RETURN_ERROR_ON(node.num_outputs() != 1);
+
+    // Extract IO and info
+    arm_compute::ITensorInfo   *input   = get_backing_tensor_info(node.input(0));
+    arm_compute::ITensorInfo   *output  = get_backing_tensor_info(node.output(0));
+    const Coordinates           starts  = node.starts();
+    const Coordinates           ends    = node.ends();
+    const BiStrides             strides = node.strides();
+    const StridedSliceLayerInfo info    = node.strided_slice_info();
+
+    return StridedSliceLayer::validate(input, output, starts, ends, strides, info.begin_mask(), info.end_mask(), info.shrink_axis_mask());
+}
+
 /** Validates a Upsample layer node
  *
  * @tparam UpsampleLayer Upsample layer type
diff --git a/arm_compute/graph/frontend/Layers.h b/arm_compute/graph/frontend/Layers.h
index 65100a3bd5..2dd8b31ccf 100644
--- a/arm_compute/graph/frontend/Layers.h
+++ b/arm_compute/graph/frontend/Layers.h
@@ -1333,6 +1333,36 @@ private:
     int                                     _axis;
 };
 
+/** StridedSlice Layer */
+class StridedSliceLayer final : public ILayer
+{
+public:
+    /** Construct a strided slice layer.
+     *
+     * @param[in] starts             The starts of the dimensions of the input tensor to be sliced. The length must be of rank(input).
+     * @param[in] ends               The ends of the dimensions of the input tensor to be sliced. The length must be of rank(input).
+     * @param[in] strides            The strides of the dimensions of the input tensor to be sliced. The length must be of rank(input).
+     * @param[in] strided_slice_info Contains masks for the starts, ends and strides
+     */
+    StridedSliceLayer(Coordinates &starts, Coordinates &ends, BiStrides &strides, StridedSliceLayerInfo strided_slice_info)
+        : _starts(starts), _ends(ends), _strides(strides), _info(strided_slice_info)
+    {
+    }
+
+    NodeID create_layer(IStream &s) override
+    {
+        NodeParams  common_params = { name(), s.hints().target_hint };
+        NodeIdxPair input         = { s.tail_node(), 0 };
+        return GraphBuilder::add_strided_slice_node(s.graph(), common_params, input, _starts, _ends, _strides, _info);
+    }
+
+private:
+    Coordinates           _starts;
+    Coordinates           _ends;
+    BiStrides             _strides;
+    StridedSliceLayerInfo _info;
+};
+
 /** Upsample Layer */
 class UpsampleLayer final : public ILayer
 {
diff --git a/arm_compute/graph/nodes/Nodes.h b/arm_compute/graph/nodes/Nodes.h
index 6df7ffab69..0e4ccd067d 100644
--- a/arm_compute/graph/nodes/Nodes.h
+++ b/arm_compute/graph/nodes/Nodes.h
@@ -63,6 +63,7 @@
 #include "arm_compute/graph/nodes/SoftmaxLayerNode.h"
 #include "arm_compute/graph/nodes/SplitLayerNode.h"
 #include "arm_compute/graph/nodes/StackLayerNode.h"
+#include "arm_compute/graph/nodes/StridedSliceLayerNode.h"
 #include "arm_compute/graph/nodes/UpsampleLayerNode.h"
 #include "arm_compute/graph/nodes/YOLOLayerNode.h"
 
diff --git a/arm_compute/graph/nodes/NodesFwd.h b/arm_compute/graph/nodes/NodesFwd.h
index 63632848af..f829955fb1 100644
--- a/arm_compute/graph/nodes/NodesFwd.h
+++ b/arm_compute/graph/nodes/NodesFwd.h
@@ -69,6 +69,7 @@ class SoftmaxLayerNode;
 class SliceLayerNode;
 class SplitLayerNode;
 class StackLayerNode;
+class StridedSliceLayerNode;
 class UpsampleLayerNode;
 class YOLOLayerNode;
 } // namespace graph
diff --git a/arm_compute/graph/nodes/StridedSliceLayerNode.h b/arm_compute/graph/nodes/StridedSliceLayerNode.h
new file mode 100644
index 0000000000..6039f312b3
--- /dev/null
+++ b/arm_compute/graph/nodes/StridedSliceLayerNode.h
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2020 Arm Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef ARM_COMPUTE_GRAPH_STRIDED_SLICE_LAYER_NODE_H
+#define ARM_COMPUTE_GRAPH_STRIDED_SLICE_LAYER_NODE_H
+
+#include "arm_compute/graph/INode.h"
+
+#include <tuple>
+
+namespace arm_compute
+{
+namespace graph
+{
+/** Slice Layer node */
+class StridedSliceLayerNode final : public INode
+{
+public:
+    /** Default Constructor
+     *
+     * @param[in] starts             The starts of the dimensions of the input tensor to be sliced. The length must be of rank(input).
+     * @param[in] ends               The ends of the dimensions of the input tensor to be sliced. The length must be of rank(input).
+     * @param[in] strides            The strides of the dimensions of the input tensor to be sliced. The length must be of rank(input).
+     * @param[in] strided_slice_info Contains masks for the starts, ends and strides
+     */
+    StridedSliceLayerNode(const Coordinates    &starts,
+                          const Coordinates    &ends,
+                          const BiStrides      &strides,
+                          StridedSliceLayerInfo strided_slice_info);
+    /** Computes slice layer output descriptor
+     *
+     * @param[in] input_descriptor Descriptor of the input tensor
+     * @param[in] starts           The starts of the dimensions of the input tensor to be sliced. The length must be of rank(input).
+     * @param[in] ends             The ends of the dimensions of the input tensor to be sliced. The length must be of rank(input).
+     * @param[in] strides          The strides of the dimensions of the input tensor to be sliced. The length must be of rank(input).
+     * @param[in] info             Contains masks for the starts, ends and strides
+     *
+     * @return  Output descriptor
+     */
+    static TensorDescriptor compute_output_descriptor(const TensorDescriptor &input_descriptor,
+                                                      const Coordinates      &starts,
+                                                      const Coordinates      &ends,
+                                                      const BiStrides        &strides,
+                                                      StridedSliceLayerInfo   info);
+    /** Start coordinates accessor
+     *
+     * @return Start coordinates of the dimensions
+     */
+    Coordinates starts() const;
+    /** End coordinates accessor
+     *
+     * @return End coordinates of the dimensions
+     */
+    Coordinates ends() const;
+    /** Strides vector accessor
+     *
+     * @return End coordinates of the dimensions
+     */
+    BiStrides strides() const;
+
+    StridedSliceLayerInfo strided_slice_info() const;
+
+    // Inherited overridden methods:
+    NodeType         type() const override;
+    bool             forward_descriptors() override;
+    TensorDescriptor configure_output(size_t idx) const override;
+    void accept(INodeVisitor &v) override;
+
+private:
+    Coordinates           _starts;
+    Coordinates           _ends;
+    BiStrides             _strides;
+    StridedSliceLayerInfo _info;
+};
+} // namespace graph
+} // namespace arm_compute
+#endif /* ARM_COMPUTE_GRAPH_STRIDED_SLICE_LAYER_NODE_H */
diff --git a/src/graph/GraphBuilder.cpp b/src/graph/GraphBuilder.cpp
index 01520421f0..a3953329d2 100644
--- a/src/graph/GraphBuilder.cpp
+++ b/src/graph/GraphBuilder.cpp
@@ -706,6 +706,11 @@ NodeID GraphBuilder::add_split_node(Graph &g, NodeParams params, NodeIdxPair inp
     return create_simple_single_input_output_node<SplitLayerNode>(g, params, input, num_splits, axis);
 }
 
+NodeID GraphBuilder::add_strided_slice_node(Graph &g, NodeParams params, NodeIdxPair input, Coordinates &starts, Coordinates &ends, BiStrides &strides, StridedSliceLayerInfo info)
+{
+    return create_simple_single_input_output_node<StridedSliceLayerNode>(g, params, input, starts, ends, strides, info);
+}
+
 NodeID GraphBuilder::add_stack_node(Graph &g, NodeParams params, const std::vector<NodeIdxPair> &inputs, int axis)
 {
     return create_simple_multiple_input_single_output_node<StackLayerNode>(g, params, inputs, inputs.size(), axis);
diff --git a/src/graph/backends/CL/CLFunctionsFactory.cpp b/src/graph/backends/CL/CLFunctionsFactory.cpp
index 59db9129ab..594ad0a05a 100644
--- a/src/graph/backends/CL/CLFunctionsFactory.cpp
+++ b/src/graph/backends/CL/CLFunctionsFactory.cpp
@@ -306,6 +306,8 @@ std::unique_ptr<IFunction> CLFunctionFactory::create(INode *node, GraphContext &
             return detail::create_softmax_layer<CLSoftmaxLayer, CLTargetInfo>(*polymorphic_downcast<SoftmaxLayerNode *>(node), ctx);
         case NodeType::StackLayer:
             return detail::create_stack_layer<CLStackLayer, CLTargetInfo>(*polymorphic_downcast<StackLayerNode *>(node));
+        case NodeType::StridedSliceLayer:
+            return detail::create_strided_slice_layer<CLStridedSlice, CLTargetInfo>(*polymorphic_downcast<StridedSliceLayerNode *>(node));
         case NodeType::UpsampleLayer:
             return detail::create_upsample_layer<CLUpsampleLayer, CLTargetInfo>(*polymorphic_downcast<UpsampleLayerNode *>(node), ctx);
         case NodeType::YOLOLayer:
diff --git a/src/graph/backends/CL/CLNodeValidator.cpp b/src/graph/backends/CL/CLNodeValidator.cpp
index ee77d58052..08d2f917ca 100644
--- a/src/graph/backends/CL/CLNodeValidator.cpp
+++ b/src/graph/backends/CL/CLNodeValidator.cpp
@@ -104,6 +104,8 @@ Status CLNodeValidator::validate(INode *node)
             return detail::validate_roi_align_layer<CLROIAlignLayer>(*polymorphic_downcast<ROIAlignLayerNode *>(node));
         case NodeType::SliceLayer:
             return detail::validate_slice_layer<CLSlice>(*polymorphic_downcast<SliceLayerNode *>(node));
+        case NodeType::StridedSliceLayer:
+            return detail::validate_strided_slice_layer<CLStridedSlice>(*polymorphic_downcast<StridedSliceLayerNode *>(node));
         case NodeType::UpsampleLayer:
             return detail::validate_upsample_layer<CLUpsampleLayer>(*polymorphic_downcast<UpsampleLayerNode *>(node));
         case NodeType::YOLOLayer:
diff --git a/src/graph/backends/NEON/NEFunctionFactory.cpp b/src/graph/backends/NEON/NEFunctionFactory.cpp
index d292977665..82f1abba9e 100644
--- a/src/graph/backends/NEON/NEFunctionFactory.cpp
+++ b/src/graph/backends/NEON/NEFunctionFactory.cpp
@@ -189,6 +189,8 @@ std::unique_ptr<IFunction> NEFunctionFactory::create(INode *node, GraphContext &
             return detail::create_softmax_layer<NESoftmaxLayer, NETargetInfo>(*polymorphic_downcast<SoftmaxLayerNode *>(node), ctx);
         case NodeType::StackLayer:
             return detail::create_stack_layer<NEStackLayer, NETargetInfo>(*polymorphic_downcast<StackLayerNode *>(node));
+        case NodeType::StridedSliceLayer:
+            return detail::create_strided_slice_layer<NEStridedSlice, NETargetInfo>(*polymorphic_downcast<StridedSliceLayerNode *>(node));
         case NodeType::UpsampleLayer:
             return detail::create_upsample_layer<NEUpsampleLayer, NETargetInfo>(*polymorphic_downcast<UpsampleLayerNode *>(node), ctx);
         case NodeType::YOLOLayer:
diff --git a/src/graph/backends/NEON/NENodeValidator.cpp b/src/graph/backends/NEON/NENodeValidator.cpp
index 0f860b63f3..46f0051468 100644
--- a/src/graph/backends/NEON/NENodeValidator.cpp
+++ b/src/graph/backends/NEON/NENodeValidator.cpp
@@ -104,6 +104,8 @@ Status NENodeValidator::validate(INode *node)
             return ARM_COMPUTE_CREATE_ERROR(arm_compute::ErrorCode::RUNTIME_ERROR, "Unsupported operation : ROIAlignLayer");
         case NodeType::SliceLayer:
             return ARM_COMPUTE_CREATE_ERROR(arm_compute::ErrorCode::RUNTIME_ERROR, "Unsupported operation : SliceLayer");
+        case NodeType::StridedSliceLayer:
+            return detail::validate_strided_slice_layer<NEStridedSlice>(*polymorphic_downcast<StridedSliceLayerNode *>(node));
         case NodeType::UpsampleLayer:
             return detail::validate_upsample_layer<NEUpsampleLayer>(*polymorphic_downcast<UpsampleLayerNode *>(node));
         case NodeType::YOLOLayer:
diff --git a/src/graph/nodes/StridedSliceLayerNode.cpp b/src/graph/nodes/StridedSliceLayerNode.cpp
new file mode 100644
index 0000000000..6a1a724bb3
--- /dev/null
+++ b/src/graph/nodes/StridedSliceLayerNode.cpp
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2020 Arm Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include "arm_compute/graph/nodes/StridedSliceLayerNode.h"
+
+#include "arm_compute/core/Utils.h"
+#include "arm_compute/core/utils/misc/ShapeCalculator.h"
+#include "arm_compute/graph/Graph.h"
+#include "arm_compute/graph/INodeVisitor.h"
+
+namespace arm_compute
+{
+namespace graph
+{
+StridedSliceLayerNode::StridedSliceLayerNode(const Coordinates    &starts,
+                                             const Coordinates    &ends,
+                                             const BiStrides      &strides,
+                                             StridedSliceLayerInfo info)
+    : _starts(starts), _ends(ends), _strides(strides), _info(std::move(info))
+{
+    _input_edges.resize(1, EmptyEdgeID);
+    _outputs.resize(1, NullTensorID);
+}
+
+Coordinates StridedSliceLayerNode::starts() const
+{
+    return _starts;
+}
+
+Coordinates StridedSliceLayerNode::ends() const
+{
+    return _ends;
+}
+
+BiStrides StridedSliceLayerNode::strides() const
+{
+    return _strides;
+}
+
+StridedSliceLayerInfo StridedSliceLayerNode::strided_slice_info() const
+{
+    return _info;
+}
+
+TensorDescriptor StridedSliceLayerNode::compute_output_descriptor(const TensorDescriptor &input_descriptor,
+                                                                  const Coordinates      &starts,
+                                                                  const Coordinates      &ends,
+                                                                  const BiStrides        &strides,
+                                                                  StridedSliceLayerInfo   info)
+{
+    using namespace arm_compute::helpers::tensor_transform;
+
+    TensorDescriptor output_desc = input_descriptor;
+    output_desc.shape            = compute_strided_slice_output_shape(input_descriptor.shape, starts, ends, strides,
+                                                                      info.begin_mask(), info.end_mask(), info.shrink_axis_mask());
+
+    return output_desc;
+}
+
+bool StridedSliceLayerNode::forward_descriptors()
+{
+    if((input_id(0) != NullTensorID) && (output_id(0) != NullTensorID))
+    {
+        Tensor *dst = output(0);
+        ARM_COMPUTE_ERROR_ON(dst == nullptr);
+        dst->desc() = configure_output(0);
+        return true;
+    }
+    return false;
+}
+
+TensorDescriptor StridedSliceLayerNode::configure_output(size_t idx) const
+{
+    ARM_COMPUTE_UNUSED(idx);
+    ARM_COMPUTE_ERROR_ON(idx >= _outputs.size());
+
+    const Tensor *src = input(0);
+    ARM_COMPUTE_ERROR_ON(src == nullptr);
+
+    return compute_output_descriptor(src->desc(), _starts, _ends, _strides, _info);
+}
+
+NodeType StridedSliceLayerNode::type() const
+{
+    return NodeType::StridedSliceLayer;
+}
+
+void StridedSliceLayerNode::accept(INodeVisitor &v)
+{
+    v.visit(*this);
+}
+} // namespace graph
+} // namespace arm_compute