An Experimental Evaluation of Compiler Optimizations on Code Size

Juliano Henrique FoleissAnderson Faustino da SilvaLinnyer Beatrys Ruiz

Traditional compiler optimizations have been widely used to generate good quality code. Currently, such optimizations are becom- ing increasingly important in wireless sensor networks, due to memory constraints. In this paper, we evaluate the effect of AVR-GCC optimizations on the code size for wireless sensor applications on MANA-M mote. Our analysis shows that code size reduction due to single optimization classes deemed too shy, even for the most effective ones. In the other hand, the combination of optimizations, characterized by AVR-GCC's optimization levels, can lead to drastically improved code size.

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