//
// is lowered to:
//
//   %sum0 = "tf.AddV2"(%0, %1)
//   %sum1 = "tf.AddV2"(%2, %3)
//   %sum2 = "tf.AddV2"(%sum0, %sum1)
//   %result = "tf.AddV2"(%sum2, %4)
//
class LowerAddNOp : public RewritePattern {
 public:
  explicit LowerAddNOp(MLIRContext *context)
      : RewritePattern(AddNOp::getOperationName(), 1, context,
                       {AddV2Op::getOperationName()}) {}

  LogicalResult matchAndRewrite(Operation *op,