Processor modeling and code selection for retargetable compilation

  • Authors:
  • J. Van Praet;D. Lanneer;W. Geurts;G. Goossens

  • Affiliations:
  • Target Compiler Technologies N.V., Leuven, Belgium;Target Compiler Technologies N.V., Leuven, Belgium;Target Compiler Technologies N.V., Leuven, Belgium;Target Compiler Technologies N.V., Leuven, Belgium

  • Venue:
  • ACM Transactions on Design Automation of Electronic Systems (TODAES)
  • Year:
  • 2001

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Abstract

Embedded processors in electronic systems typically are tuned to a few applications. Development of processor-specific compilers is prohibitively expensive and, as a result, such compilers, if existing, yield code of an unacceptable quality. To improve this code quality, we developed a processor model that captures the connectivity, the parallelism, and all architectural peculiarities of an embedded processor. We also implemented a retargetable and optimizing compiler working on this model. We present the graph-based processor model, and formally define the code generation task as binding the intermediate representation of an application to this model. We also present a new method for code selection, based on this processor model, that is capable of handling directed acyclic graphs instead of trees.