A simple mechanism for improving the accuracy and efficiency of instruction-level disambiguation

Steven Novack, Joseph Hummel, Alexandru Nicolau

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Compilers typically treat source-level and instruction-level issues as independent phases of compilation so that much of the information that might be available to source-level systems of transformations about the semantics of the high-level language and its implementation, as well as the algorithm in some cases, is generally “lost in the translation”, making it unavailable to instruction-level systems of transformations. While this separation of concerns reduces the complexity of the compiler and facilitates porting the compiler to different source/target combinations, it also forces the costly recomputation at the instruction-level of much of the information that was already available to the higher level, and in many cases introduces spurious dependencies that can not be eliminated by instruction-level analysis alone. In this paper we present a simple mechanism for retaining algorithm and source language semantics information for use in instruction-level disambiguation, while retaining the ease of porting the compiler to different source/target combinations, and without noticeably increasing the complexity of the compiler. Simulation results show that our mechanism provides a significant increase in both performance, resulting from more accurate higher level data dependence information, and efficiency, as instruction-level dependence analysis no longer needs to recompute information that was already available at the higher level.

Original languageEnglish (US)
Title of host publicationLanguages and Compilers for Parallel Computing - 8th International Workshop, LCPC 1995, Proceedings
EditorsChua-Huang Huang, Ponnuswamy Sadayappan, Utpal Banerjee, David Gelernter, Alex Nicolau, David Padua
PublisherSpringer Verlag
Pages289-303
Number of pages15
ISBN (Print)9783540607656
DOIs
StatePublished - 1996
Event8th International Workshop on Languages and Compilers for Parallel Computing, LCPC 1995 - Columbus, United States
Duration: Aug 10 1995Aug 12 1995

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume1033
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Other

Other8th International Workshop on Languages and Compilers for Parallel Computing, LCPC 1995
Country/TerritoryUnited States
CityColumbus
Period8/10/958/12/95

ASJC Scopus subject areas

  • Theoretical Computer Science
  • General Computer Science

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