template <class BinaryOp, class TfCumOp>
class ConvertLoweredCumOp : public OpConversionPattern<mhlo::ReduceWindowOp> {
 public:
  using OpConversionPattern::OpConversionPattern;

  virtual bool IsInitValue(const DenseElementsAttr& attr) const = 0;

  LogicalResult matchAndRewrite(
      mhlo::ReduceWindowOp rw, OpAdaptor adaptor,
      ConversionPatternRewriter& rewriter) const final {