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A case for static branch prediction in real-time systems

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3 Author(s)
C. Burguiere ; Inst. de Recherche en Informatique de Toulouse, France ; C. Rochange ; P. Sainrat

Taking dynamic branch prediction into account in WCET determination turns out to be complex, particularly because of the possible interferences between branches. In this paper we argue the case for using static instead of dynamic branch prediction: the aliasing problem is swept away and, in many cases, the estimated worst-case numbers of branch mispredictions are reduced. We propose a method to predict each branch at compile time. Experimental results show how effective this approach can be.

Published in:

11th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications (RTCSA'05)

Date of Conference:

17-19 Aug. 2005