发明授权
US08161264B2 Techniques for data prefetching using indirect addressing with offset
有权
使用间接寻址偏移量进行数据预取的技术
- 专利标题: Techniques for data prefetching using indirect addressing with offset
- 专利标题(中): 使用间接寻址偏移量进行数据预取的技术
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申请号: US12024246申请日: 2008-02-01
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公开(公告)号: US08161264B2公开(公告)日: 2012-04-17
- 发明人: Ravi K. Arimilli , Balaram Sinharoy , William E. Speight , Lixin Zhang
- 申请人: Ravi K. Arimilli , Balaram Sinharoy , William E. Speight , Lixin Zhang
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: Yudell Isidore Ng Russell PLLC
- 主分类号: G06F13/00
- IPC分类号: G06F13/00
摘要:
A technique for performing data prefetching using indirect addressing includes determining a first memory address of a pointer associated with a data prefetch instruction. Content, that is included in a first data block (e.g., a first cache line) of a memory, at the first memory address is then fetched. An offset is then added to the content of the memory at the first memory address to provide a first offset memory address. A second memory address is then determined based on the first offset memory address. A second data block (e.g., a second cache line) that includes data at the second memory address is then fetched (e.g., from the memory or another memory). A data prefetch instruction may be indicated by a unique operational code (opcode), a unique extended opcode, or a field (including one or more bits) in an instruction.
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