OORS: An Object-Oriented Rewrite System with Applications in Retargetable Code Generation and Optimization


Retargeting a compiler's back end to a new architecture is a time-consuming process. This becomes an evident problem in the area of programmable graphics hardware (graphics processing units, GPUs) or embedded processors, where architectural changes are faster than elsewhere. We propose the object-oriented rewrite system OORS to overcome this problem.

Using the OORS language, a compiler developer can express the code generation and optimization phase in terms of cost-annotated rewrite rules supporting complex non-linear matching and replacing patterns. Retargetability is achieved by organizing rules into profiles, one for each supported target architecture. Featuring a rule and profile inheritance mechanism, OORS makes the reuse of existing specification possible. This is an improvement regarding traditional approaches. Altogether OORS increases the maintainability of the compiler's back end and thus both decreases the complexity and reduces the effort of the retargeting process. To show the potential of this approach, we have implemented a code generation and a code optimization pattern matcher supporting different target architectures using the OORS language and introduced them in a GPU compiler.

paper (PDF)

BibTeX information

 author={Gernot Gebhard and Philipp Lucas},
 title={{OORS}: An Object-Oriented Rewrite System with Applications in
     Retargetable Code Generation and Optimization},
 booktitle={Proceedings of the 1st Workshop on Advances in Programming
  Languages (WAPL'07)},
 editor={Marjan Mernik},

More information

An extended version is available as a journal paper.

For more information about OORS, please visit the OORS homepage.

back to publications

Valid XHTML 1.0 Strict, valid CSS.

Best viewed with any browser.

Author: Philipp Lucas.