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METHOD AND APPARATUS FOR REDUCING POWER CONSUMPTION IN A PROCESSOR BY POWERING DOWN AN INSTRUCTION FETCH UNIT
METHOD AND APPARATUS FOR REDUCING POWER CONSUMPTION IN A PROCESSOR BY POWERING DOWN AN INSTRUCTION FETCH UNIT
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机译:通过关断指令抓取单元来减少处理器中的功耗的方法和装置
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摘要
An apparatus and method are described for reducing power consumption in a processor by powering down an instruction fetch unit. For example one embodiment of a method comprises: detecting a branch the branch having addressing information associated therewith; comparing the addressing information with entries in an instruction prefetch buffer to determine whether an executable instruction loop exists within the prefetch buffer; wherein if an instruction loop is detected as a result of the comparison then powering down an instruction fetch unit and/or components thereof; and streaming instructions directly from the prefetch buffer until a clearing condition is detected.
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