发明名称 |
USING RESULTS OF SPECULATIVE BRANCHES TO PREDICT BRANCHES DURING NON-SPECULATIVE EXECUTION |
摘要 |
One embodiment of the present invention provides a system that facilitates storing results of resolvable branches during speculative execution, and then using the results to predict the same branches during non-speculative execution. During operation, the system executes code within a processor. Upon encountering a stall condition, the system speculatively executes the code from the point of the stall, without committing results of the speculative execution to the architectural state of the processor. Upon encountering a branch instruction that is resolved during speculative execution, the system stores the result of the resolved branch in a branch queue, so that the result can be subsequently used to predict the branch during non-speculative execution. |
申请公布号 |
WO2005098615(A3) |
申请公布日期 |
2006.06.29 |
申请号 |
WO2005US10729 |
申请日期 |
2005.03.30 |
申请人 |
SUN MICROSYSTEMS, INC.;TREMBLAY, MARC;CHAUDHRY, SHAILDENDER;JACOBSON, QUINN A. |
发明人 |
TREMBLAY, MARC;CHAUDHRY, SHAILDENDER;JACOBSON, QUINN A. |
分类号 |
G06F9/38;G06F9/00 |
主分类号 |
G06F9/38 |
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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