Remove (CL/NE)UpsampleLayer in favor to (NE/CL)Scale

Upsample functions and kernels can be replaced with the Scale as they
provide same functionality

Partially resolves: COMPMID-3996

Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Change-Id: Ic2f9ba352c183aa87d69d551d5c172d0f22119e8
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4679
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>

7 files changed, 1 insertions, 181 deletions

diff --git a/arm_compute/graph/GraphBuilder.h b/arm_compute/graph/GraphBuilder.h
index 54bb33d1a4..8c727e3c8e 100644
--- a/arm_compute/graph/GraphBuilder.h
+++ b/arm_compute/graph/GraphBuilder.h
@@ -571,17 +571,6 @@ public:
      * @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
-     * @param[in] params            Common node parameters
-     * @param[in] input             Input to the yolo layer node as a NodeID-Index pair
-     * @param[in] info              Upsample layer stride info
-     * @param[in] upsampling_policy Upsampling policy used
-     *
-     * @return Node ID of the created node, EmptyNodeID in case of error
-     */
-    static NodeID add_upsample_node(Graph &g, NodeParams params, NodeIdxPair input, Size2D info, InterpolationPolicy upsampling_policy);
     /** Adds a yolo layer to the graph
      *
      * @param[in] g        Graph to add the node to
diff --git a/arm_compute/graph/backends/FunctionHelpers.h b/arm_compute/graph/backends/FunctionHelpers.h
index 18fdb9f3bb..873957e6b7 100644
--- a/arm_compute/graph/backends/FunctionHelpers.h
+++ b/arm_compute/graph/backends/FunctionHelpers.h
@@ -1619,7 +1619,7 @@ std::unique_ptr<IFunction> create_resize_layer(ResizeLayerNode &node)
 
     // Create and configure function
     auto func = std::make_unique<ResizeLayerFunction>();
-    func->configure(input, output, ScaleKernelInfo{ policy, BorderMode::CONSTANT });
+    func->configure(input, output, ScaleKernelInfo{ policy, BorderMode::CONSTANT, PixelValue(), SamplingPolicy::CENTER, false, false });
 
     // Log info
     ARM_COMPUTE_LOG_GRAPH_INFO("Instantiated "
@@ -1840,51 +1840,6 @@ std::unique_ptr<IFunction> create_strided_slice_layer(StridedSliceLayerNode &nod
 
     return RETURN_UNIQUE_PTR(func);
 }
-
-/** Create a backend Upsample layer function
- *
- * @tparam UpsampleLayerFunction Backend Upsample function
- * @tparam TargetInfo            Target-specific information
- *
- * @param[in] node Node to create the backend function for
- * @param[in] ctx  Graph context
- *
- * @return Backend Upsample layer function
- */
-template <typename UpsampleLayerFunction, typename TargetInfo>
-std::unique_ptr<IFunction> create_upsample_layer(UpsampleLayerNode &node, GraphContext &ctx)
-{
-    ARM_COMPUTE_UNUSED(ctx);
-    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));
-    const Size2D                     info              = node.info();
-    const InterpolationPolicy        upsampling_policy = node.upsampling_policy();
-    ARM_COMPUTE_ERROR_ON(upsampling_policy != InterpolationPolicy::NEAREST_NEIGHBOR);
-    ARM_COMPUTE_ERROR_ON(info.x() != 2 || info.y() != 2);
-    ARM_COMPUTE_ERROR_ON(input == nullptr);
-    ARM_COMPUTE_ERROR_ON(output == nullptr);
-
-    // Create and configure function
-    auto func = std::make_unique<UpsampleLayerFunction>();
-    func->configure(input, output, info, upsampling_policy);
-
-    // 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()
-                               << " Strides: " << info
-                               << " Upsampling policy: " << upsampling_policy
-                               << std::endl);
-
-    return RETURN_UNIQUE_PTR(func);
-}
 } // namespace detail
 } // namespace backends
 } // namespace graph
diff --git a/arm_compute/graph/backends/ValidateHelpers.h b/arm_compute/graph/backends/ValidateHelpers.h
index df1c17697b..f8cb1c12e9 100644
--- a/arm_compute/graph/backends/ValidateHelpers.h
+++ b/arm_compute/graph/backends/ValidateHelpers.h
@@ -654,28 +654,6 @@ Status validate_strided_slice_layer(StridedSliceLayerNode &node)
     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
- *
- * @param[in] node Node to validate
- *
- * @return Status
- */
-template <typename UpsampleLayer>
-Status validate_upsample_layer(UpsampleLayerNode &node)
-{
-    ARM_COMPUTE_LOG_GRAPH_VERBOSE("Validating UpsampleLayer 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 input and output
-    arm_compute::ITensorInfo *input  = detail::get_backing_tensor_info(node.input(0));
-    arm_compute::ITensorInfo *output = get_backing_tensor_info(node.output(0));
-
-    // Validate function
-    return UpsampleLayer::validate(input, output, node.info(), node.upsampling_policy());
-}
 /** Validates a element-wise layer node
  *
  * @param[in] node Node to validate
diff --git a/arm_compute/graph/frontend/Layers.h b/arm_compute/graph/frontend/Layers.h
index dfe7842aa1..c4de4013b2 100644
--- a/arm_compute/graph/frontend/Layers.h
+++ b/arm_compute/graph/frontend/Layers.h
@@ -1459,32 +1459,6 @@ private:
     StridedSliceLayerInfo _info;
 };
 
-/** Upsample Layer */
-class UpsampleLayer final : public ILayer
-{
-public:
-    /** Construct a Upsample layer.
-     *
-     * @param[in] info              Stride info
-     * @param[in] upsampling_policy Upsampling policy
-     */
-    UpsampleLayer(Size2D info, InterpolationPolicy upsampling_policy)
-        : _info(info), _upsampling_policy(upsampling_policy)
-    {
-    }
-
-    NodeID create_layer(IStream &s) override
-    {
-        NodeParams  common_params = { name(), s.hints().target_hint };
-        NodeIdxPair input         = { s.tail_node(), 0 };
-        return GraphBuilder::add_upsample_node(s.graph(), common_params, input, _info, _upsampling_policy);
-    }
-
-private:
-    Size2D              _info;
-    InterpolationPolicy _upsampling_policy;
-};
-
 /** YOLO Layer */
 class YOLOLayer final : public ILayer
 {
diff --git a/arm_compute/graph/nodes/Nodes.h b/arm_compute/graph/nodes/Nodes.h
index 9a6f982da7..edb1876722 100644
--- a/arm_compute/graph/nodes/Nodes.h
+++ b/arm_compute/graph/nodes/Nodes.h
@@ -67,6 +67,5 @@
 #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"
 
 #endif /* ARM_COMPUTE_GRAPH_NODES_H */
diff --git a/arm_compute/graph/nodes/NodesFwd.h b/arm_compute/graph/nodes/NodesFwd.h
index b46b5d5f09..485361296a 100644
--- a/arm_compute/graph/nodes/NodesFwd.h
+++ b/arm_compute/graph/nodes/NodesFwd.h
@@ -73,7 +73,6 @@ class SliceLayerNode;
 class SplitLayerNode;
 class StackLayerNode;
 class StridedSliceLayerNode;
-class UpsampleLayerNode;
 } // namespace graph
 } // namespace arm_compute
 #endif /* ARM_COMPUTE_GRAPH_NODES_FWD_H */
diff --git a/arm_compute/graph/nodes/UpsampleLayerNode.h b/arm_compute/graph/nodes/UpsampleLayerNode.h
deleted file mode 100644
index 8e43ac23f3..0000000000
--- a/arm_compute/graph/nodes/UpsampleLayerNode.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * Copyright (c) 2018-2019 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_UPSAMPLE_LAYER_NODE_H
-#define ARM_COMPUTE_GRAPH_UPSAMPLE_LAYER_NODE_H
-
-#include "arm_compute/graph/INode.h"
-
-namespace arm_compute
-{
-namespace graph
-{
-/** Upsample Layer node */
-class UpsampleLayerNode final : public INode
-{
-public:
-    /** Constructor
-     *
-     * @param[in] info              Stride info
-     * @param[in] upsampling_policy Upsampling policy
-     */
-    UpsampleLayerNode(Size2D info, InterpolationPolicy upsampling_policy);
-    /** Stride info metadata accessor
-     *
-     * @return The stride info of the layer
-     */
-    Size2D info() const;
-    /** Upsampling policy metadata accessor
-     *
-     * @return The upsampling policy of the layer
-     */
-    InterpolationPolicy upsampling_policy() const;
-    /** Computes upsample output descriptor
-     *
-     * @param[in] input_descriptor Input descriptor
-     * @param[in] info             Stride information
-     *
-     * @return Output descriptor
-     */
-    static TensorDescriptor compute_output_descriptor(const TensorDescriptor &input_descriptor, Size2D info);
-
-    // 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:
-    Size2D              _info;
-    InterpolationPolicy _upsampling_policy;
-};
-} // namespace graph
-} // namespace arm_compute
-#endif /* ARM_COMPUTE_GRAPH_UPSAMPLE_LAYER_NODE_H */