tensorflow::Padding padding;
    if (!GetPaddingFromString(op.getPadding().str(), &padding).ok())
      return failure();

    auto out_backprop_ty =
        mlir::dyn_cast<RankedTensorType>(op.getOutBackprop().getType());
    auto filter_ty = mlir::dyn_cast<RankedTensorType>(op.getFilter().getType());

    // With the exception of out_backprop's batch dimension, out_backprop and