发明授权
- 专利标题: Superscalar microprocessor employing a way prediction unit to predict the way of an instruction fetch address and to concurrently provide a branch prediction address corresponding to the fetch address
- 专利标题(中): 超标量微处理器采用方式预测单元来预测指令获取地址的方式并且同时提供对应于获取地址的分支预测地址
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申请号: US826884申请日: 1997-04-08
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公开(公告)号: US5764946A公开(公告)日: 1998-06-09
- 发明人: Thang M. Tran , James K. Pickett
- 申请人: Thang M. Tran , James K. Pickett
- 申请人地址: CA Sunnyvale
- 专利权人: Advanced Micro Devices
- 当前专利权人: Advanced Micro Devices
- 当前专利权人地址: CA Sunnyvale
- 主分类号: G06F9/38
- IPC分类号: G06F9/38 ; G06F12/08 ; G06F12/00 ; G06F13/00
摘要:
A superscalar microprocessor is provided employing a way prediction unit which predicts the next fetch address as well as the way of the instruction cache that the current fetch address hits in while the instructions associated with the current fetch are being read from the instruction cache. The microprocessor may achieve high frequency operation while using an associative instruction cache. An instruction fetch can be made every clock cycle using the predicted fetch address from the way prediction unit until an incorrect next fetch address or an incorrect way is predicted. The instructions from the predicted way are provided to the instruction processing pipelines of the superscalar microprocessor each clock cycle.
公开/授权文献
- US5259405A Structure of a barette 公开/授权日:1993-11-09
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