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A region analysis algorithm for the live variables problem

  • Z. Czech

Research output: Contribution to journalArticlepeer-review

Abstract

An algorithm to solve the "live variables" problem on reducible flow graphs is presented. It is based on the concept of a region of a flow graph. The algorithm is compared for time complexity with the well-known round-robin version of the iterative algorithm on "self-replicating" families of reducible flow graphs. The results of comparison are inconclusive in that the region analysis algorithm requires fewer bit-vector operations on some graphs and more on others.

Original languageEnglish
Pages (from-to)193-210
Number of pages18
JournalComputing
Volume33
Issue number3-4
DOIs
Publication statusPublished - Sept 1984

Keywords

  • AMS Subject Classifications: 68C25, 68B10, 68E10
  • Global program optimization
  • data flow analysis
  • flow graph
  • interval analysis
  • live variables
  • reducibility
  • time complexity

ASJC Scopus subject areas

  • Software
  • Theoretical Computer Science
  • Numerical Analysis
  • Computer Science Applications
  • Computational Theory and Mathematics
  • Computational Mathematics

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