Performance enhancement of embedded software based on new register allocation technique

In this paper, a register allocation technique that translates memory accesses to register accesses is presented to enhance embedded software performance. In the proposed method, a source code is profiled to generate a memory trace. From the profiling results, target functions with high dynamic call...

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Bibliographic Details
Published in:Microprocessors and microsystems 2005-05, Vol.29 (4), p.177-187
Main Authors: Lee, Jong-Yeol, Cho, Seong-IK, Park, In-Cheol
Format: Article
Language:English
Subjects:
Embedded software
Memory access
Profiling
Register access
Register allocation
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Summary:In this paper, a register allocation technique that translates memory accesses to register accesses is presented to enhance embedded software performance. In the proposed method, a source code is profiled to generate a memory trace. From the profiling results, target functions with high dynamic call counts are selected, and the proposed register allocation technique is applied only to the target functions to save the compilation time. The memory trace of the target functions is searched for the memory accesses that result in cycle count reduction when replaced by register accesses, and they are translated to register accesses by modifying the intermediate code and allocating promotion registers. The experiments on MediaBench and DSPstone benchmark programs show that the proposed method increases the performance by 14 and 18% on the average for ARM and MCORE, respectively.
ISSN:0141-9331
1872-9436
DOI:10.1016/j.micpro.2004.10.001