PREDICTING AND AVOIDING OPERAND-STORE-COMPARE HAZARD IN OUT-OF-ORDER MICROPROCESSOR

摘要

PROBLEM TO BE SOLVED: To provide a method and information processing system for managing load and store operations executed by an out-of-order method.SOLUTION: At least one of a load instruction and a store instruction is executed. A determination is made that an operand store compare hazard has been encountered. Entries 402 and 403 within an operand store compare hazard prediction table 116 are created based on the determination. The entries 402 and 403 include at least instruction addresses 404 and 412 of the instruction that has been executed and hazard indicating flags 406 and 416 associated with the instruction. The hazard indicating flags 406 and 416 indicate that the instruction has encountered the operand store compare hazard. When a load instruction is associated with the hazard indicating flag, the load instruction becomes dependent upon all store instructions associated with a substantially similar flag.