Computer-implemented method for carrying out selective jump instruction prediction in e.g. digital special or general purpose computer, involves blocking jump instruction prediction after prediction blocking instruction is executed

摘要

The method involves detecting an instruction for blocking jump instruction prediction in a stream of instructions by a processor e.g. CPU. The jump instruction prediction is blocked by a prediction blockage module (124) at a predetermined number of jump instructions after the instruction for blocking the jump instruction prediction is executed by the processor based on detection of prediction blocking instruction. A preset condition e.g. type of code, is detected by a condition detection module (121) based on the stream of instructions by the processor. Independent claims are also included for the following: (1) a computer system for carrying out selective jump instruction prediction (2) a computer program product comprising instructions to carry out selective jump instruction prediction.