| 摘要 |
PROBLEM TO BE SOLVED: To efficiently execute prefetch by minimizing the problem of cache contamination or the like by inserting a prefetch instruction into an instruction stream based on execution time information in an arithmetic processor equipped with a cache memory. SOLUTION: This arithmetic processing unit is executed by dynamically inserting a prefetch instruction to previously instruct the transfer of data from a main memory to a cache memory into an instruction column, and provided with a means for selecting the instruction being the target of prefetch processing from among instructions resulting in cache mistakes, a means for predicting a memory access address at the time of executing the instruction being the target of the prefetch processing, a means for deciding the inserting position of the prefetch instruction corresponding to the instruction being the target of prefetch processing into the instruction column, and a means for inserting the prefetch instruction whose operand has the predicted memory access address into the decided inserting position. COPYRIGHT: (C)2003,JPO
|
