Chapter 4 Introduction
Chapter 4 Introduction
Chapter 4 Introduction
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Morgan Kaufmann Publishers 31 January 20131-Bit Predictor: Shortcomingn Inner loop branches mispredicted twice!outer: ……inner: ……beq …, …, inner…beq …, …, outern Mispredict as takenon last iteration of inner loopn Then mispredict as not takenon first iteration of inner loop next time aroundCSE 420 <strong>Chapter</strong> 4 — The Processor — 912-Bit Predictorn Only change predictionon two successive mispredictions“weak”“strong”CSE 420 <strong>Chapter</strong> 4 — The Processor — 92
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