Offline specialisation in Prolog using a hand-written compiler generator

Michael Leuschel, Jesper Jorgensen, Maurice Bruynooghe, Wim Vanhoof

Résultats de recherche: Contribution à un journal/une revueArticleRevue par des pairs


The so called “cogen approach” to program specialisation, writing a compiler generator instead of a specialiser, has been used with considerable success in partial evaluation of both functional and imperative languages. This paper demonstrates that the cogen approach is also applicable to the specialisation of logic programs (called partial deduction) and leads to effective specialisers. Moreover, using good binding-time annotations, the speed-ups of the specialised programs are comparable to the speed-ups obtained with online specialisers. The paper first develops a generic approach to offline partial deduction and then a specific offline partial deduction method, leading to the offline system LIX for pure logic programs. While this is a usable specialiser by itself, it is used to develop the cogen system LOGEN. Given a program, a specification of what inputs will be static, and an annotation specifying which calls should be unfolded, LOGEN generates a specialised specialiser for the program at hand. Running this specialiser with particular values for the static inputs results in the specialised program. While this requires two steps instead of one, the efficiency of the specialisation process is improved in situations where the same program is specialised multiple times. The paper also presents and evaluates an automatic binding-time analysis that is able to derive the annotations. While the derived annotations are still suboptimal compared to hand-crafted ones, they enable non-expert users to use the LOGEN system in a fully automated way. Finally, LOGEN is extended so as to directly support a large part of Prolog's declarative and non-declarative features and so as to be able to perform so called mixline specialisations.
langue originaleAnglais
Pages (de - à)139-191
Nombre de pages53
journalTheory and Practice of Logic Programming
Numéro de publication1-2
Date de mise en ligne précoce6 janv. 2004
Les DOIs
Etat de la publicationPublié - janv. 2004

Empreinte digitale

Examiner les sujets de recherche de « Offline specialisation in Prolog using a hand-written compiler generator ». Ensemble, ils forment une empreinte digitale unique.

Contient cette citation