Invention Grant
US07711929B2 Method and system for tracking instruction dependency in an out-of-order processor
失效
用于跟踪乱序处理器中的指令依赖性的方法和系统
- Patent Title: Method and system for tracking instruction dependency in an out-of-order processor
- Patent Title (中): 用于跟踪乱序处理器中的指令依赖性的方法和系统
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Application No.: US11847530Application Date: 2007-08-30
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Publication No.: US07711929B2Publication Date: 2010-05-04
- Inventor: William E. Burky , Krishnan Kailas
- Applicant: William E. Burky , Krishnan Kailas
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Dillon & Yudell LLP
- Main IPC: G06F9/30
- IPC: G06F9/30
Abstract:
A method of tracking instruction dependency in a processor issuing instructions speculatively includes recording in an instruction dependency array (IDA) an entry for each instruction that indicates data dependencies, if any, upon other active instructions. An output vector read out from the IDA indicates data readiness based upon which instructions have previously been selected for issue. The output vector is used to select and read out issue-ready instructions from an instruction buffer.
Public/Granted literature
- US20090063823A1 Method and System for Tracking Instruction Dependency in an Out-of-Order Processor Public/Granted day:2009-03-05
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