Computing device, information processing apparatus, and method of controlling computing device

An information processing apparatus comprising:

• a computing device comprising:
• an instruction decoding unit that decodes a multiple data processing instruction performing a processing operation on multiple data comprising first data and second data,
• a plurality of first allocatable registers to hold data,
• a plurality of second allocatable registers to hold data,
• an allocatable register selection unit that selects one of the first allocatable registers and one of the second allocatable registers based on a decoding result of the multiple data processing instruction, respectively,
• a first processing unit that performs first processing on the first data based on the decoding result of the multiple data processing instruction and makes the selected first allocatable register hold a first processing result obtained as a result of the first processing,
• a second processing unit that performs second processing on the second data based on the decoding result of the multiple data processing instruction and makes the selected second allocatable register hold a second processing result obtained as a result of the second processing,
• a, first result register that stores the first processing result held in the selected first allocatable register, and
• a second result register that stores the second processing result held in the selected second allocatable register;
• and
• a storage device coupled to the computing device to store the first data and the second data.

A method of controlling a computing device, the method comprising:

• decoding an instruction that is entered and selecting result registers as a destination of processing results of the instruction;
• selecting allocatable registers as temporary storage of processing results, based on a result of said decoding;
• processing data based on the result of said decoding;
• storing results of the processing in the allocatable registers selected by the selecting;
• and
• transferring the stored results of the processing from the allocatable registers selected by the selecting to the result registers selected by the decoding;
• wherein the decoding decodes a multiple data processing instruction that performs a processing operation on multiple data including first data and second data, and selects the result registers, one from a first result register set and another from a second result register set, to store each result of the processing operation, and wherein
• the selecting selects the allocatable registers, one from a first allocatable register set and another from a second allocatable register set,
• the processing performs first processing on the first data and sends a first processing result of the first processing to the allocatable register selected from the first allocatable register set,
• the processing further performs second processing on the second data and send a second processing result of the second processing to the allocatable register selected from the second allocatable register set,
• the transferring transfers the first processing result from the allocatable register selected from the first allocatable register set to the result register selected from the first result register set, and
• the transferring further transfers the second processing result from the allocatable register selected from the second allocatable register set to the result register selected from the second result register set.