Branch prediction power reduction

In one embodiment, a microprocessor is provided. The microprocessor includes instruction memory and a branch prediction unit. The branch prediction unit is configured to use information from the instruction memory to selectively power up the branch prediction unit from a powered-down state when fetc...

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Bibliographic Details
Main Authors AGGARWAL, ANEESH, KOSCHORECK, KEVIN, WASSON, PAUL, SEGELKEN, ROSS
Format Patent
LanguageChinese
English
Published 01.10.2015
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:In one embodiment, a microprocessor is provided. The microprocessor includes instruction memory and a branch prediction unit. The branch prediction unit is configured to use information from the instruction memory to selectively power up the branch prediction unit from a powered-down state when fetched instruction data includes a branch instruction and maintain the branch prediction unit in the powered-down state when the fetched instruction data does not include a branch instruction in order to reduce power consumption of the microprocessor during instruction fetch operations.
Bibliography:Application Number: TW20132114411