OptimizeConsecutiveReshapesImpl Class Reference

#include <OptimizeConsecutiveReshapes.hpp>

Public Member Functions
void	Run (Graph &graph, InputSlot &connection) const
	Run for every connection between a base ReshapeLayer and a child ReshapeLayer.

Protected Member Functions
	OptimizeConsecutiveReshapesImpl ()=default
	~OptimizeConsecutiveReshapesImpl ()=default

Detailed Description

Definition at line 14 of file OptimizeConsecutiveReshapes.hpp.

Constructor & Destructor Documentation

OptimizeConsecutiveReshapesImpl()

OptimizeConsecutiveReshapesImpl ( )

protecteddefault

~OptimizeConsecutiveReshapesImpl()

~OptimizeConsecutiveReshapesImpl ( )

protecteddefault

Member Function Documentation

Run()

void Run ( Graph & graph, InputSlot & connection ) const

inline

Run for every connection between a base ReshapeLayer and a child ReshapeLayer.

Inserts an equivalent ReshapeLayer that bypasses both for that connection.

Definition at line 19 of file OptimizeConsecutiveReshapes.hpp.

    {
        Layer& base = connection.GetConnectedOutputSlot()->GetOwningLayer();
        Layer& child = connection.GetOwningLayer();
 
        ARMNN_ASSERT(base.GetType() == LayerType::Reshape);
        ARMNN_ASSERT(child.GetType() == LayerType::Reshape);
 
        OutputSlot* parentOut = base.GetInputSlot(0).GetConnectedOutputSlot();
 
        const TensorInfo& inInfo = parentOut->GetTensorInfo();
        const TensorInfo& outInfo = child.GetOutputHandler().GetTensorInfo();
 
        // This Optimization is only appropriate when the base ReshapeLayer is connected to the child ReshapeLayer
        // and no other Layer.
        if (base.GetOutputSlot(0).GetNumConnections() > 1)
        {
            return;
        }
 
        if (inInfo.GetShape() != outInfo.GetShape())
        {
            // Inserts equivalent reshape before base layer.
            const std::string name = std::string("merged-") + base.GetName() + std::string("-with-") + child.GetName();
            const ReshapeDescriptor descriptor{outInfo.GetShape()};
            auto& newReshape = *graph.InsertNewLayer<ReshapeLayer>(base.GetInputSlot(0), descriptor, name.c_str());
 
            // Parent is now the new layer.
            parentOut = &newReshape.GetOutputSlot();
        }
 
        // Moves connections in child output to parent layer.
        // Child layer will be removed as it's left unconnected.
        // Base layer will be removed if left unconnected.
        child.GetOutputSlot().MoveAllConnections(*parentOut);
    }

References ARMNN_ASSERT, InputSlot::GetConnectedOutputSlot(), Layer::GetInputSlot(), Layer::GetName(), OutputSlot::GetNumConnections(), Layer::GetOutputHandler(), Layer::GetOutputSlot(), InputSlot::GetOwningLayer(), OutputSlot::GetOwningLayer(), TensorInfo::GetShape(), OutputHandler::GetTensorInfo(), OutputSlot::GetTensorInfo(), Layer::GetType(), Graph::InsertNewLayer(), OutputSlot::MoveAllConnections(), and armnn::Reshape.

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The documentation for this class was generated from the following file:

• src/armnn/optimizations/OptimizeConsecutiveReshapes.hpp