# Compiling without continuations

@article{Maurer2017CompilingWC,
title={Compiling without continuations},
author={Luke Maurer and P. Downen and Zena M. Ariola and Simon PEYTON JONES},
journal={Proceedings of the 38th ACM SIGPLAN Conference on Programming Language Design and Implementation},
year={2017}
}
• Published 14 June 2017
• Computer Science
• Proceedings of the 38th ACM SIGPLAN Conference on Programming Language Design and Implementation
Many fields of study in compilers give rise to the concept of a join point—a place where different execution paths come together. Join points are often treated as functions or continuations, but we believe it is time to study them in their own right. We show that adding join points to a direct-style functional intermediate language is a simple but powerful change that allows new optimizations to be performed, including a significant improvement to list fusion. Finally, we report on recent work…
22 Citations

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## References

SHOWING 1-10 OF 29 REFERENCES
Compiling with Continuations
This book shows how continuation-passing style is used as an intermediate representation to perform optimizations and program transformations to create practical optimizing compilers for modern languages like ML.
• Computer Science
Sci. Comput. Program.
• 1998
Let-floating: moving bindings to give faster programs
• Computer Science
ICFP '96
• 1996
Let-floating has not received much explicit attention in the past, but measurements show that it is an important group of transformations (at least for lazy languages), offering a reduction of more than 30% in heap allocation and 15% in execution time.
SSA is functional programming
The SSA community draws pictures of graphs with basic blocks and flow edges, and the functional-language community writes lexically nested functions, but (as Richard Kelsey recently pointed out) they’re both doing exactly the same thing in different notation.
Rabbit: A Compiler for Scheme
A compiler for the lexically-scoped dialect of LISP known as SCHEME, which handles only a small basis set which reflects the semantics of lambda-calculus, and serves to produce code as good as that produced by more traditional compilers.
Shrinking Reductions in SML.NET
• Computer Science
IFL
• 2004
This is the first implementation and evaluation of a linear-time rewriting algorithm proposed by Appel and Jim, working with a mutable, pointer-based term representation, which significantly outperforms the existing functional algorithm.
Compiling with continuations, continued
We present a series of CPS-based intermediate languages suitable for functional language compilation, arguing that they have practical benefits over direct-style languages based on A-normal form
Contification using dominators
• Computer Science
ICFP '01
• 2001
This paper gives a formal presentation of contification in MLton, a whole-program optimizing Standard ML compiler, as well as a new algorithm based on the dominator tree of a program's call graph that is optimal.
A Functional Perspective on SSA Optimisation Algorithms
• Computer Science
Electron. Notes Theor. Comput. Sci.
• 2003