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Method and Apparatus for Inhibiting Fetch Throttling When a Processor Encounters a Low Confidence Branch Instruction in an Information Handling System
Method and Apparatus for Inhibiting Fetch Throttling When a Processor Encounters a Low Confidence Branch Instruction in an Information Handling System
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机译:当处理器遇到信息处理系统中的低置信度分支指令时,禁止取回节流的方法和装置
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摘要
An information handling system includes a processor that throttles an instruction fetcher whenever a group of instructions in a branch instruction queue together exhibits a confidence in the accuracy of branch predictions of branch instructions therein that is less than a first predetermined threshold confidence threshold. In one embodiment, the processor includes a fetch throttle controller that inhibits fetch throttling by the instruction fetcher when confidence in the accuracy of a branch prediction for a particular currently issued branch instruction exhibits less than a second predetermined threshold confidence threshold.
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