Results 1  10
of
46
Projections for strictness analysis
 Proceedings of the ACM ConferenceonFunctional Programming Languages and Computer Architecture (FPCA '87). LNCS
, 1987
"... ..."
(Show Context)
A Semantic Model of Reference Counting and its Abstraction
 In Proceedings ACM Conference on Lisp and Functional Programming
, 1986
"... Interpretation of Reference Counting The semantics presented thus far is exact, and thus evaluating a particular reference count may not terminate, any more than a program in the standard semantics would. For use by a compiler we must choose a suitable abstraction (i.e., approximation) that will gu ..."
Abstract

Cited by 69 (0 self)
 Add to MetaCart
(Show Context)
Interpretation of Reference Counting The semantics presented thus far is exact, and thus evaluating a particular reference count may not terminate, any more than a program in the standard semantics would. For use by a compiler we must choose a suitable abstraction (i.e., approximation) that will guarantee termination yet still provide useful information about the true reference counts. For us a suitable abstraction is one in which the inferred reference count is at least as great as the true one; i.e., we wish to err on the side of thinking there are more pointers to an object than there actually are. In this section we methodically develop such an abstraction in which: (1) the base domains are abstracted to powersets of finite approximations, (2) the primitive functions are abstracted similarly, (3) an abstract interpretation is thus induced on R p and R, and finally (4) a collecting interpretation of expressions is developed. 4.1 Preliminaries To set up things to come, we first gi...
Single Assignment C  efficient support for highlevel array operations in a functional setting
, 2003
"... ..."
Assignments for applicative languages
 Conf. on Functional Program. Lang. and Comput. Arch
, 1991
"... We propose a theoretical framework for adding assignments and dynamic data to functional languages without violating their semantic properties. This differs from semifunctional languages like Scheme and ML in that values of expressions remain static and sideeffectfree. A new form of abstraction c ..."
Abstract

Cited by 37 (10 self)
 Add to MetaCart
We propose a theoretical framework for adding assignments and dynamic data to functional languages without violating their semantic properties. This differs from semifunctional languages like Scheme and ML in that values of expressions remain static and sideeffectfree. A new form of abstraction called observer is designed to encapsulate stateoriented computation from the remaining purely applicative computation. The type system ensures that observers are combined linearly, allowing an implementation in terms of a global store. The utility of this extension is in manipulating shared dynamic data embedded in data structures. Evaluation of welltyped programs is ChurchRosser. Thus, programs produce the same results whether an eager or lazy evaluation order is used (assuming termination). A simple, sound logic permits reasoning about welltyped programs. The benefits of this work include greater expressive power and efficiency (compared to applicative languages), while retaining simplicity of reasoning.
The Design, Implementation and Evaluation of Jade, a Portable, Implicitly Parallel Programming Language
 Dept. of Computer Science, Stanford Univ
, 1994
"... ii ..."
(Show Context)
Equal Rights for Functional Objects or, The More Things Change, The More They Are the Same
, 1993
"... DATA TYPES A. Comparing Type Objects There has been as much confusion over type identity as there has been over object identity, although the type identity problem is usually referred to as the type equivalence problem [Aho86,s.6.3] [Wegbreit74] [Welsh77]. The type identity problem is to determine ..."
Abstract

Cited by 23 (7 self)
 Add to MetaCart
DATA TYPES A. Comparing Type Objects There has been as much confusion over type identity as there has been over object identity, although the type identity problem is usually referred to as the type equivalence problem [Aho86,s.6.3] [Wegbreit74] [Welsh77]. The type identity problem is to determine when two types are equal, so that type checking can be done in a programming language. 22 Algol68 takes the point of view of "structural" equivalence, in which nonrecursive types that are built up from primitive types using the same type constructors in the same order should compare equal, while Ada takes the point of view of "name" equivalence, in which types are equivalent if and only if they have the same name. We will ignore the software engineering issues of which kind of type equivalence makes for betterengineered programs, and focus on the basic issue of type equivalence itself. We note that if a type system offers the type TYPEi.e., it offers firstclass representations of typ...
Inductive Graphs and Functional Graph Algorithms
, 2001
"... We propose a new style of writing graph algorithms in functional languages which is based on an alternative view of graphs as inductively defined data types. We show how this graph model can be implemented efficiently, and then we demonstrate how graph algorithms can be succinctly given by recursive ..."
Abstract

Cited by 18 (2 self)
 Add to MetaCart
We propose a new style of writing graph algorithms in functional languages which is based on an alternative view of graphs as inductively defined data types. We show how this graph model can be implemented efficiently, and then we demonstrate how graph algorithms can be succinctly given by recursive function definitions based on the inductive graph view. We also regard this as a contribution to the teaching of algorithms and data structures in functional languages since we can use the functionalstyle graph algorithms instead of the imperative algorithms that are dominant today. Keywords: Graphs in Functional Languages, Recursive Graph Algorithms, Teaching Graph Algorithms in Functional Languages
Copy elimination in functional languages
 in: POPL ’89: Proceedings of the 16th ACM SIGPLANSIGACT symposium on Principles of programming languages
, 1989
"... Copy elimination is an important optimization for compiling functional languages. Copies arise because these languages lack the concepts of state and variable; hence updating an object involves a copy in a naive implementation. Copies are also possible if proper targeting has not been carried out in ..."
Abstract

Cited by 18 (0 self)
 Add to MetaCart
(Show Context)
Copy elimination is an important optimization for compiling functional languages. Copies arise because these languages lack the concepts of state and variable; hence updating an object involves a copy in a naive implementation. Copies are also possible if proper targeting has not been carried out inside functions and across function calls. Targeting is the proper selection of a storage area for evaluating an expression. By abstracting a collection of functions by a target operator, we compute targets of function bodies that can then be used to define an optimized interpreter to eliminate copies due to updates and copies across function calls. The language we consider is typed lambda calculus with higherorder functions and special constructs for array operations. Our approach can eliminate copies in divide and conquer problems like quicksort and bitonic sort that previous approaches could not handle. We also present some results of implementing a compiler for a single assignment language called SAL on some small but tough programs. Our results indicate that it is possible to approach a performance comparable to imperative languages like Pascal. 1
Shallow Binding Makes Functional Arrays Fast
 ACM SIGPLAN notices
, 1991
"... this paper is the first to make the connection with the literature on variablebinding environments. ..."
Abstract

Cited by 16 (2 self)
 Add to MetaCart
this paper is the first to make the connection with the literature on variablebinding environments.