pooling_node.h

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#pragma once
 
#include "sdfg/data_flow/library_nodes/math/tensor/tensor_node.h"
 
#include "sdfg/codegen/dispatchers/block_dispatcher.h"
#include "sdfg/data_flow/library_nodes/math/tensor/spatial_tensor_node.h"
#include "sdfg/serializer/json_serializer.h"
 
namespace sdfg {
namespace math {
namespace tensor {
 
inline data_flow::LibraryNodeCode LibraryNodeType_Pooling("ml::Pooling");

enum class PoolingMode {
    Max, 
    Sum, 
    Avg 
};

class PoolingNode : public SpatialTensorNode {
protected:
    PoolingMode mode_;
 
public:
    PoolingNode(
        size_t element_id,
        const DebugInfo& debug_info,
        const graph::Vertex vertex,
        data_flow::DataFlowGraph& parent,
        PoolingMode mode,
        const std::vector<symbolic::Expression>& shape,
        const std::vector<symbolic::Expression>& kernel_shape,
        const std::vector<symbolic::Expression>& strides,
        const std::vector<symbolic::Expression>& pads,
        const std::vector<symbolic::Expression>& dilations,
        QuantizationType quantization = QUANTIZATION_MATCH_INPUTS,
        const data_flow::ImplementationType& impl_type = data_flow::ImplementationType_NONE
    );
 
    PoolingMode mode() const {
        return mode_;
    }
 
    void validate(const Function& function) const override;
 
    passes::LibNodeExpander::ExpandOutcome
    expand(passes::LibNodeExpander::ExpandContext& context, structured_control_flow::Block& block) override;
 
    bool supports_integer_types() const override {
        return true;
    }
 
    std::unique_ptr<data_flow::DataFlowNode>
    clone(size_t element_id, const graph::Vertex vertex, data_flow::DataFlowGraph& parent) const override;
 
    std::string toStr() const override;
 
    static std::string mode_to_string(PoolingMode mode);
    static PoolingMode string_to_mode(const std::string& str);
 
    symbolic::Expression flop() const override;
 
    data_flow::PointerAccessType pointer_access_type(int input_idx) const override;
};

class PoolingNodeSerializer : public SpatialTensorNodeBaseSerializer {
public:
    nlohmann::json serialize(const data_flow::LibraryNode& library_node) override;
 
    data_flow::LibraryNode& deserialize(
        const nlohmann::json& j, builder::StructuredSDFGBuilder& builder, structured_control_flow::Block& parent
    ) override;
};
 
} // namespace tensor
} // namespace math
} // namespace sdfg