Software instructed dynamic branch history pattern adjustment
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United States of America Patent
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May 2, 2017
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N/A
app pub date -
Dec 15, 2015
filing date -
Dec 15, 2015
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Abstract
Techniques relate to dynamic branch history pattern adjustment. Past histories of branch instruction results are collected as part of a branch history pattern. A branch prediction structure with a pattern history buffer predicts a direction of a branch instruction using the branch history pattern. The branch prediction structure executes one or more branch history pattern recording adjustment instructions prior to one or more branch instructions. Executing the one or more branch history pattern recording adjustment instructions changes default behaviors of recording and usage of the branch history pattern.
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