auto padding_const =
          rewriter.create<TF::ConstOp>(op->getLoc(), padding_attr);

      // Add Pad op.
      auto pad_output_type = UnrankedTensorType::get(elem_type);
      input = rewriter.create<TF::PadOp>(op->getLoc(), pad_output_type, input,
                                         padding_const);

      // Set Conv padding to `VALID` since padding has been handled by Pad op.