Invention Grant
- Patent Title: Look-ahead load pre-fetch in a processor
- Patent Title (中): 在处理器中预先加载预取
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Application No.: US09922551Application Date: 2001-08-02
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Publication No.: US08171266B2Publication Date: 2012-05-01
- Inventor: Alan H. Karp , Rajiv Gupta
- Applicant: Alan H. Karp , Rajiv Gupta
- Applicant Address: US TX Houston
- Assignee: Hewlett-Packard Development Company, L.P.
- Current Assignee: Hewlett-Packard Development Company, L.P.
- Current Assignee Address: US TX Houston
- Main IPC: G06F12/00
- IPC: G06F12/00

Abstract:
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.
Public/Granted literature
- US20030046518A1 Look-ahead load pre-fetch in a processor Public/Granted day:2003-03-06
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