发明名称 |
Method and system for software control of hardware branch prediction mechanism in a data processor |
摘要 |
A method and system is disclosed for software manipulation of hardware prediction mechanism in a data processor with software prediction. The hardware branch prediction mechanism is enhanced with at least two bits for path prediction. These bits are settable by a software and are capable of overriding the hardware branch prediction mechanism. Branch prediction information is encoded into a branch instruction in the software. This information includes a pre-determined value for each bit. Finally, a branch path of said instruction is predicted based on the value of the bits.
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申请公布号 |
US6662360(B1) |
申请公布日期 |
2003.12.09 |
申请号 |
US19990407105 |
申请日期 |
1999.09.27 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
HAY ROBERT WILLIAM;KAHLE JAMES ALLAN;KONIGSBURG BRIAN R.;LEVITAN DAVID STEPHEN;SINHAROY BALARAM |
分类号 |
G06F9/38;(IPC1-7):G06F9/44;G06F9/45;G06F15/00 |
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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