Array-access analysis: Difference between revisions

Revision as of 17:25, 18 December 2005

Revision as of 17:26, 18 December 2005

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The major data type manipulated in scientific programs is obviously array. The define/use analysis on a whole array is insufficent to aggressive [[compiler optimization]]s like [[auto parallelization]] and [[array privatization]]. Array access analyis aims to get the knowledge of which portion or even elements of the array is accessed by a certain code segment([[basic block]],[[loop]]s, or even [[procedure]] level).

Array access analysis can be largely categoried into exact (or reference-list-based) and summary methods for the different tradeoff of accuracy and complexity. Exact methods are precise but very costly in terms of computation and space storage, while summary methods are approximate but can be done fast and economically.