Influence of compiler optimizations on system power

Abstract

High-level compiler optimizations have been widely used to achieve speedups on array-based codes. Such optimizations are becoming increasingly important in embedded signal processing and multimedia systems. The focus of these optimizations has traditionally been on improving performance. However, energy constraints are of critical importance in battery-operated embedded devices. In this paper, we present an experimental evaluation of several state-of-the-art compiler optimizations on energy consumption, considering both the processor core (datapath) and memory system. This is in contrast to many of the previous works that have considered them in isolation.