发明名称 |
Method and apparatus for inhibiting fetch throttling when a processor encounters a low confidence branch instruction in an information handling system |
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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申请公布号 |
US8006070(B2) |
申请公布日期 |
2011.08.23 |
申请号 |
US20070951112 |
申请日期 |
2007.12.05 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
GSCHWIND MICHAEL KARL;PHILHOWER ROBERT ALAN;YEUNG RAYMOND CHEUNG |
分类号 |
G06F9/30;G06F7/38;G06F9/00;G06F9/40;G06F9/44;G06F15/00 |
主分类号 |
G06F9/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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