ADJUSTING A PROGRAM TRANSFORMATION FOR LEGALITY

Author:

BASTOUL CÉDRIC1,FEAUTRIER PAUL2

Affiliation:

1. Laboratoire PRiSM, Université de Versailles Saint Quentin, 45 avenue des États-Unis, 78035 Versailles Cedex, France

2. LIP, École Normale Supérieure de Lyon, 46 Allée d'Italie, 60364 Lyon, France

Abstract

Program transformations are one of the most valuable compiler techniques to improve parallelism or data locality. However, restructuring compilers have a hard time coping with data dependences. A typical solution is to focus on program parts where the dependences are simple enough to enable any transformation. For more complex problems is only addressed the question of checking whether a transformation is legal or not. In this paper we propose to go further. Starting from a transformation with no guarantee on legality, we show how we can correct it for dependence satisfaction. Two directions are explored: first when transformation properties can be explicitly expressed and second when they are implicit as in the data locality transformation case. Generating code having the best properties is a direct application of this result.

Publisher

World Scientific Pub Co Pte Lt

Subject

Hardware and Architecture,Theoretical Computer Science,Software

Cited by 4 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Modeling the conflicting demands of parallelism and Temporal/Spatial locality in affine scheduling;Proceedings of the 27th International Conference on Compiler Construction;2018-02-24

2. Mapping deviation: a technique to adapt or to guard loop transformation intuitions for legality;Proceedings of the 25th International Conference on Compiler Construction;2016-03-17

3. The numerical template toolbox: A modern C++ design for scientific computing;Journal of Parallel and Distributed Computing;2014-12

4. Polyhedral Bubble Insertion: A Method to Improve Nested Loop Pipelining for High-Level Synthesis;IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems;2013-03

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