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Software Power Optimization via Post-Link-Time Binary Rewriting£ Abstract

By Saumya Debray, Robert Muth and Scott Watterson

Abstract

It is well known that compiler optimizations can significantly reduce the energy usage of a program. However, the traditional model of compilation imposes inherent limits on the extent of code optimization possible at compile time. In particular, analyses and optimizations are typically limited to individual procedures, and hence cannot cross procedural and module boundaries as well as the boundaries between application and library code. These limitations can be overcome by carrying out additional code optimization on the object file obtained after linking has been carried out. These optimizations are complementary to those carried out by the compiler. Our experiments indicate that significant improvements in energy usage can be obtained via post-link-time code optimization, even for programs that have been subjected to extensive compile-time optimization.

Year: 2009
OAI identifier: oai:CiteSeerX.psu:10.1.1.134.9157
Provided by: CiteSeerX
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