| 摘要 |
A data processing apparatus is disclosed. The apparatus comprises a register data store comprising a plurality of registers. The apparatus further comprises a data processor operable to perform in parallel a data processing operation on data elements; and decode logic responsive to a single vector-by-scalar instruction to control the data processor so as to specify one of the plurality of registers as a first source register operable to store a plurality of source data elements, to specify another of the plurality of registers as a second source register operable to store a plurality of selectable data elements, to select one of said selectable data elements as a scalar operand and to perform a vector-by-scalar operation in parallel on the source data elements, each vector-by-scalar operation causing a resultant data element to be generated from a source data element and the scalar operand. By providing a source register which contains selectable data elements it is possible to select one of those data elements as a scalar operand and to perform multiple vector-by-scalar operations in parallel using the same scalar operand on all source data elements.
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