Intel's "Branch Predictor" Improves Performance by Using a PHR

Intel's "Branch Predictor" Improves Performance by Using a PHR

University of California San Diego

In software, frequent branching occurs as programs navigate different paths based on varying data values. This predictor anticipates future branch outcomes by referencing past histories stored within prediction tables. Previous attacks have exploited this mechanism by analyzing entries in these tables to discern recent branch tendencies at specific addresses.

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