Demand-driven Inlining in a Region-based Optimizer for ILP Architectures

Thomas P. Way; Lori L. Pollock

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arXiv · cs/0604043

Demand-driven Inlining in a Region-based Optimizer for ILP Architectures

Thomas P. Way·Lori L. Pollock

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Abstract

Region-based compilation repartitions a program into more desirable compilation units using profiling information and procedure inlining to enable region formation analysis. Heuristics play a key role in determining when it is most beneficial to inline procedures during region formation. An ILP optimizing compiler using a region-based approach restructures a program to better reflect dynamic behavior and increase interprocedural optimization and scheduling opportunities. This paper presents an interprocedural compilation technique which performs procedure inlining on-demand, rather than as a separate phase, to improve the ability of a region-based optimizer to control code growth, compilation time and memory usage while improving performance. The interprocedural region formation algorithm utilizes a demand-driven, heuristics-guided approach to inlining, restructuring an input program into interprocedural regions. Experimental results are presented to demonstrate the impact of the algorithm and several inlining heuristics upon a number of traditional and novel compilation characteristics within a region-based ILP compiler and simulator.

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BibTeX RIS

Thomas P. Way, Lori L. Pollock. 2006-04-11. Demand-driven Inlining in a Region-based Optimizer for ILP Architectures. https://arxiv.org/abs/cs/0604043

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