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Orderofevaluation Analysis for Destructive Updates in Strict Functional Languages with Flat Aggregates
 

Summary: Order­of­evaluation Analysis for Destructive Updates in Strict Functional
Languages with Flat Aggregates
A.V.S. Sastry, William Clinger and Zena Ariola
Department of Computer Science
University of Oregon
Eugene, OR, 97403
email: [sastry, will, ariola]@cs.uoregon.edu
Abstract
The aggregate update problem in functional languages is
concerned with detecting cases where a functional array up­
date operation can be implemented destructively in constant
time. Previous work on this problem has assumed a fixed
order of evaluation of expressions. In this paper, we devise a
simple analysis, for strict functional languages with flat ag­
gregates, that derives a good order of evaluation for making
the updates destructive. Our work improves Hudak's work
[14] on abstract reference counting, which assumes fixed or­
der of evaluation and uses the domain of sticky reference
counts. Our abstract reference counting uses a 2­point do­
main. We show that for programs with no aliasing, our anal­

  

Source: Ariola, Zena M. - Department of Computer and Information Science, University of Oregon

 

Collections: Computer Technologies and Information Sciences