发明申请
- 专利标题: System, method and device for queuing branch predictions
- 专利标题(中): 排队分支预测的系统,方法和设备
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申请号: US10748173申请日: 2003-12-31
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公开(公告)号: US20050149708A1公开(公告)日: 2005-07-07
- 发明人: Tal Gat , Franck Sala , Eran Altshuler
- 申请人: Tal Gat , Franck Sala , Eran Altshuler
- 主分类号: G06F9/38
- IPC分类号: G06F9/38 ; G06F9/44
摘要:
A system, method and device for storing branch predictions in a queue that may be connected to a branch prediction unit, and for delivering the stored predictions to an instruction fetch unit. A look up may be made of for example two sequential lines, and for example a segmented cache of a branch prediction unit may generate predictions of an address having an even numbered index by referring to for example a first side of the cache, and an address with an odd numbered index by referring to for example a second side of the cache. Branch predictions for two sequential lines may be generated during for example a prediction period such as two clock cycles. In some embodiments, a next instruction pointer of a branch prediction unit may be independent or decoupled from of a next instruction pointer of an instruction fetch unit.
公开/授权文献
- US07430657B2 System, method and device for queuing branch predictions 公开/授权日:2008-09-30
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