- 专利标题: Folded instruction fetch pipeline
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申请号: US17835352申请日: 2022-06-08
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公开(公告)号: US11880685B2公开(公告)日: 2024-01-23
- 发明人: John G. Favor , Michael N. Michael , Vihar Soneji
- 申请人: Ventana Micro Systems Inc.
- 申请人地址: US CA Cupertino
- 专利权人: Ventana Micro Systems Inc.
- 当前专利权人: Ventana Micro Systems Inc.
- 当前专利权人地址: US CA Cupertino
- 代理机构: Huffman Law Group, PC
- 代理商 E. Alan Davis
- 主分类号: G06F9/38
- IPC分类号: G06F9/38
摘要:
An instruction fetch pipeline includes first, second, and third sub-pipelines that respectively include: a TLB that receives a fetch virtual address, a tag random access memory (RAM) of a physically-indexed physically-tagged set associative instruction cache that receives a predicted set index, and a data RAM that receives the predicted set index and a predicted way number that specifies a way of the entry from which a block of instructions was previously fetched. The predicted set index specifies the instruction cache set that includes the entry. The three sub-pipelines respectively initiate in parallel: a TLB access using the fetch virtual address to obtain a translation thereof into a fetch physical address that includes a tag, a tag RAM access using the predicted set index to read a set of tags, and a data RAM access using the predicted set index and the predicted way number to fetch the block of instructions.
公开/授权文献
- US12014178B2 Folded instruction fetch pipeline 公开/授权日:2024-06-18
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