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

METHOD AND APPARATUS FOR PROVIDING PACKED SHIFT OPERATIONS IN A PROCESSOR
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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