An Empirical Evaluation of the Influence of the Load-Store Unit on WCET Analysis

Mohamed Abdel Maksoud & Jan Reineke
Due to the complexity of today�s micro-architectures, the micro-architectural analysis usually constitutes the most time-consuming step in worst-case execution time (WCET) analysis. In this paper, we investigate the influence of the design of the load-store unit (LSU) in the PowerPC 7448 on WCET analysis. To this end, we introduce a simplified variant of the existing design of the LSU by reducing its queue sizes. Using AbsInt's aiT WCET analysis toolchain we determine the resulting WCET...