发明授权
- 专利标题： Outstanding load miss buffer with shared entries
- 专利标题（中）： 具有共享条目的突出负载丢失缓冲区
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申请号： US13250544申请日： 2011-09-30
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公开(公告)号： US08850121B1公开(公告)日： 2014-09-30
- 发明人: Matthew W. Ashcraft , John Gregory Favor , David A. Kruckemyer
- 申请人： Matthew W. Ashcraft , John Gregory Favor , David A. Kruckemyer
- 申请人地址： US CA Sunnyvale
- 专利权人： Applied Micro Circuits Corporation
- 当前专利权人： Applied Micro Circuits Corporation
- 当前专利权人地址： US CA Sunnyvale
- 代理机构： Amin, Turocy & Watson, LLP
- 主分类号： G06F12/08
- IPC分类号： G06F12/08
摘要：
A load/store unit with an outstanding load miss buffer and a load miss result buffer is configured to read data from a memory system having a level one cache. Missed load instructions are stored in the outstanding load miss buffer. The load/store unit retrieves data for multiple dependent missed load instructions using a single cache access and stores the data in the load miss result buffer. The outstanding load miss buffer stores a first missed load instruction in a first primary entry. Additional missed load instructions that are dependent on the first missed load instructions are stored in dependent entries of the first primary entry or in shared entries. If a shared entry is used for a missed load instruction the shared entry is associated with the primary entry.