发明授权
- 专利标题: System and method of correcting a branch misprediction
- 专利标题(中): 校正分支错误预测的系统和方法
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申请号: US11061981申请日: 2005-02-18
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公开(公告)号: US07152155B2公开(公告)日: 2006-12-19
- 发明人: Michael Scott McIlvaine , James Norris Dieffenderfer , Jeffrey Todd Bridges , Thomas Andrew Sartorius
- 申请人: Michael Scott McIlvaine , James Norris Dieffenderfer , Jeffrey Todd Bridges , Thomas Andrew Sartorius
- 申请人地址: US CA San Diego
- 专利权人: Qualcomm Incorporated
- 当前专利权人: Qualcomm Incorporated
- 当前专利权人地址: US CA San Diego
- 代理商 Nicholas J. Pauley; Philip R. Wadsworth; Charles D. Brown
- 主分类号: G06F9/38
- IPC分类号: G06F9/38
摘要:
When a branch misprediction in a pipelined processor is discovered, if the mispredicted branch instruction is not the last uncommitted instruction in the pipelines, older uncommitted instructions are checked for dependency on a long latency operation. If one is discovered, all uncommitted instructions are flushed from the pipelines without waiting for the dependency to be resolved. The branch prediction is corrected, and the branch instruction and all flushed instructions older than the branch instruction are re-fetched and executed.
公开/授权文献
- US20060190707A1 System and method of correcting a branch misprediction 公开/授权日:2006-08-24
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