Row-Polymorphic Types for Strategic Rewriting
Abstract
We present a type system for strategy languages that express program transformations as compositions of rewrite rules. Our row-polymorphic type system assists compiler engineers to write correct strategies by statically rejecting non meaningful compositions of rewrites that otherwise would fail during rewriting at runtime. Furthermore, our type system enables reasoning about how rewriting transforms the shape of the computational program. We present a formalization of our language at its type system and demonstrate its practical use for expressing compiler optimization strategies. Our type system builds the foundation for many interesting future applications, including verifying the correctness of program transformations and synthesizing program transformations from specifications encoded as types.
Cite
@article{arxiv.2103.13390,
title = {Row-Polymorphic Types for Strategic Rewriting},
author = {Rongxiao Fu and Xueying Qin and Ornela Dardha and Michel Steuwer},
journal= {arXiv preprint arXiv:2103.13390},
year = {2021}
}