Two-level (correlated) branch predictor

Tag: two-level-predictor

Aliases: correlated predictor, Yeh-Patt predictor

A direction predictor that maintains a recent-outcome history (Branch History Register, BHR) and uses it together with the branch PC to index a Pattern History Table of 2-bit counters. Captures self- and cross-branch correlation that a single bimodal counter misses.

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