发明授权
- 专利标题: Reducing pipeline restart penalty
- 专利标题(中): 减少管道重新开始罚球
-
申请号: US12768641申请日: 2010-04-27
-
公开(公告)号: US09086889B2公开(公告)日: 2015-07-21
- 发明人: Martin Karlsson , Sherman H. Yip , Shailender Chaudhry
- 申请人: Martin Karlsson , Sherman H. Yip , Shailender Chaudhry
- 申请人地址: US CA Redwood Shores
- 专利权人: Oracle International Corporation
- 当前专利权人: Oracle International Corporation
- 当前专利权人地址: US CA Redwood Shores
- 代理机构: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.
- 主分类号: G06F9/38
- IPC分类号: G06F9/38 ; G06F12/08
摘要:
Techniques are disclosed relating to reducing the latency of restarting a pipeline in a processor that implements scouting. In one embodiment, the processor may reduce pipeline restart latency using two instruction fetch units that are configured to fetch and re-fetch instructions in parallel with one another. In some embodiments, the processor may reduce pipeline restart latency by initiating re-fetching instructions in response to determining that a commit operation is to be attempted with respect to one or more deferred instructions. In other embodiments, the processor may reduce pipeline restart latency by initiating re-fetching instructions in response to receiving an indication that a request for a set of data has been received by a cache, where the indication is sent by the cache before determining whether the data is present in the cache or not.
公开/授权文献
- US20110264862A1 REDUCING PIPELINE RESTART PENALTY 公开/授权日:2011-10-27
信息查询