Invention Grant
- Patent Title: Reducing store-hit-loads in an out-of-order processor
- Patent Title (中): 减少无序处理器中的存储命中负载
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Application No.: US13235174Application Date: 2011-09-16
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Publication No.: US09069563B2Publication Date: 2015-06-30
- Inventor: Brian R. Konigsburg , David S. Levitan , Brian R. Mestan , David Mui
- Applicant: Brian R. Konigsburg , David S. Levitan , Brian R. Mestan , David Mui
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Yudell Isidore PLLC
- Agent Matthew Baca
- Main IPC: G06F9/312
- IPC: G06F9/312 ; G06F9/38

Abstract:
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.
Public/Granted literature
- US20130073833A1 REDUCING STORE-HIT-LOADS IN AN OUT-OF-ORDER PROCESSOR Public/Granted day:2013-03-21
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