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This document provides a detailed overview of the LRU (Least Recently Used) mechanism in the context of the BrIT (Branch Instruction Target) and BrTa (Branch Target Address). It examines the layout of BTB (Branch Target Buffer) from Set 0 to Set 7, discussing its function, design, and implications for performance. The layout is not to scale, but it offers insight into how the mechanism operates within the system to manage branch predictions efficiently.
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