发明申请
US20070239810A1 METHOD AND APPARATUS FOR PROVIDING PACKED SHIFT OPERATIONS IN A PROCESSOR
失效
在处理器中提供包装移位操作的方法和装置
- 专利标题: METHOD AND APPARATUS FOR PROVIDING PACKED SHIFT OPERATIONS IN A PROCESSOR
- 专利标题(中): 在处理器中提供包装移位操作的方法和装置
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申请号: US11758767申请日: 2007-06-06
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公开(公告)号: US20070239810A1公开(公告)日: 2007-10-11
- 发明人: DERRICK LIN , Punit Minocha , Alexander Peleg , Yaakov Yaari , Millind Mittal , Larry Mennemeier , Benny Eitan
- 申请人: DERRICK LIN , Punit Minocha , Alexander Peleg , Yaakov Yaari , Millind Mittal , Larry Mennemeier , Benny Eitan
- 主分类号: G06F17/00
- IPC分类号: G06F17/00
摘要:
A method and apparatus for providing, in a processor, a shift operation on a packed data element having multiple values. One embodiment of a central processing unit (CPU) includes instruction fetch logic to fetch a single-instruction-multiple-data (SIMD) shift instruction. A register stores a multiple data elements to be operated upon by the SIMD shift instruction. A barrel shifter concurrently shifts the data elements in a bit-wise manner by a variable number of bit positions in response to the SIMD shift instruction.
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