METHODS APPARATUS INSTRUCTIONS AND LOGIC TO PROVIDE VECTOR POPULATION COUNT FUNCTIONALITY

摘要

The instructions and logic provide SIMD vector population count functionality. Some embodiments store a plurality of bits of data in each data field of a vector register or portion of n data fields of a memory vector. At the processor, SIMD instructions for the vector population count are executed to determine, for that portion of the n data fields in the vector register or memory vector, the occurrence of binary values equal to each of one or more first predetermined binary values And the one or more first counts corresponding to the one or more first predetermined binary values, the counted occurrences are stored in a portion of the destination register corresponding to a portion of n data fields in the vector register or memory vector.