Invention Grant
US07711930B2 Apparatus and method for decreasing the latency between instruction cache and a pipeline processor
失效
用于减少指令高速缓存和流水线处理器之间的等待时间的装置和方法
- Patent Title: Apparatus and method for decreasing the latency between instruction cache and a pipeline processor
- Patent Title (中): 用于减少指令高速缓存和流水线处理器之间的等待时间的装置和方法
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Application No.: US11868557Application Date: 2007-10-08
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Publication No.: US07711930B2Publication Date: 2010-05-04
- Inventor: James N. Dieffenderfer , Richard W. Doing , Brian M. Stempel , Steven R. Testa , Kenichi Tsuchiya
- Applicant: James N. Dieffenderfer , Richard W. Doing , Brian M. Stempel , Steven R. Testa , Kenichi Tsuchiya
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Thomas E. Tyson; Joscelyn G. Cockburn; Mark E. McBurney
- Main IPC: G06F9/30
- IPC: G06F9/30 ; G06F9/38

Abstract:
A method and apparatus for executing instructions in a pipeline processor. The method decreases the latency between an instruction cache and a pipeline processor when bubbles occur in the processing stream due to an execution of a branch correction, or when an interrupt changes the sequence of an instruction stream. The latency is reduced when a decode stage for detecting branch prediction and a related instruction queue location have invalid data representing a bubble in the processing stream. Instructions for execution are inserted in parallel into the decode stage and instruction queue, thereby reducing by one cycle time the length of the pipeline stage.
Public/Granted literature
- US20080177981A1 APPARATUS AND METHOD FOR DECREASING THE LATENCY BETWEEN INSTRUCTION CACHE AND A PIPELINE PROCESSOR Public/Granted day:2008-07-24
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