发明授权
- 专利标题: Reducing store-hit-loads in an out-of-order processor
- 专利标题(中): 减少无序处理器中的存储命中负载
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申请号: US13235174申请日: 2011-09-16
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公开(公告)号: US09069563B2公开(公告)日: 2015-06-30
- 发明人: Brian R. Konigsburg , David S. Levitan , Brian R. Mestan , David Mui
- 申请人: Brian R. Konigsburg , David S. Levitan , Brian R. Mestan , David Mui
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: Yudell Isidore PLLC
- 代理商 Matthew Baca
- 主分类号: G06F9/312
- IPC分类号: G06F9/312 ; G06F9/38
摘要:
A technique for reducing store-hit-loads in an out-of-order processor includes storing a store address of a store instruction associated with a store-hit-load (SHL) pipeline flush in an SHL entry. In response to detecting another SHL pipeline flush for the store address, a current count associated with the SHL entry is updated. In response to the current count associated with the SHL entry reaching a first terminal count, a dependency for the store instruction is created such that execution of a younger load instruction with a load address that overlaps the store address stalls until the store instruction executes.
公开/授权文献
- US20130073833A1 REDUCING STORE-HIT-LOADS IN AN OUT-OF-ORDER PROCESSOR 公开/授权日:2013-03-21
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