OPERATING SYSTEM AWARE BRANCH PREDICTOR USING A DYNAMICALLY RECONFIGURABLE BRANCH HISTORY TABLE

OPERATING SYSTEM AWARE BRANCH PREDICTOR USING A DYNAMICALLY RECONFIGURABLE BRANCH HISTORY TABLE

A processor resource manager assigns a branch history resource to a first execution mode. The branch history resource is utilized for predicting a branch direction of a branch instruction. Next, the resource manager logs a number of branch mispredictions that occur while the processor executes a sec...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BELL, JR. ROBERT H, CHEN WEN-TZER THOMAS
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:A processor resource manager assigns a branch history resource to a first execution mode. The branch history resource is utilized for predicting a branch direction of a branch instruction. Next, the resource manager logs a number of branch mispredictions that occur while the processor executes a second execution mode. The resource manager, in turn, reassigns the branch history resource to the second execution mode based upon the number of branch mispredictions.