We present an abstract machine for a strong call-by-need strategy in the lambda calculus. The machine has been derived automatically from a higher-order evaluator that uses the technique of memothunks to implement laziness. The derivation has been done with the use of an off-the-shelf transformation tool implementing the "functional correspondence" between higher-order interpreters and abstract machines, and it yields a simple and concise description of the machine. We prove that the resulting machine conservatively extends the lazy version of Krivine machine for the weak call-by-need strategy, and that it simulates the normal-order strategy in bilinear number of steps.

@article{paperbot1482,
  title = {A simple and efficient implementation of strong call by need by an abstract machine},
  author = {Małgorzata Biernacka and Witold Charatonik and Tomasz Drab},
  journal = {Proceedings of the ACM on Programming Languages},
  volume = {6},
  number = {ICFP},
  year = {2022},
  doi = {10.1145/3549822}
}