发明授权
- 专利标题: Look-ahead load pre-fetch in a processor
- 专利标题(中): 在处理器中预先加载预取
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申请号: US09922551申请日: 2001-08-02
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公开(公告)号: US08171266B2公开(公告)日: 2012-05-01
- 发明人: Alan H. Karp , Rajiv Gupta
- 申请人: Alan H. Karp , Rajiv Gupta
- 申请人地址: US TX Houston
- 专利权人: Hewlett-Packard Development Company, L.P.
- 当前专利权人: Hewlett-Packard Development Company, L.P.
- 当前专利权人地址: US TX Houston
- 主分类号: G06F12/00
- IPC分类号: G06F12/00
摘要:
A method for look-ahead load pre-fetching that reduces the effects of instruction stalls caused by high latency instructions. Look-ahead load pre-fetching is accomplished by searching an instruction stream for load memory instructions while the instruction stream is stalled waiting for completion of a previous instruction in the instruction stream. A pre-fetch operation is issued for each load memory instruction found. The pre-fetch operations cause data for the corresponding load memory instructions to be copied to a cache, thereby avoiding long latencies in the subsequent execution of the load memory instructions.
公开/授权文献
- US20030046518A1 Look-ahead load pre-fetch in a processor 公开/授权日:2003-03-06
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