BRANCH PREDICTING METHOD AND RELATED APPARATUS

摘要

A branch predicting method and a related apparatus. Applied in a server, the processor comprises: a first BTAC that stores information about a mapping between a register identifier and a predicted target jump-to address, and a second BTAC that stores information about a mapping between a field of a program counter and a predicted target jump-to address. The brand predicting method comprises: reading an instruction from an instruction buffer; if determining that the instruction satisfies a register prediction condition, obtaining a predicted target jump-to address of the instruction from the first BTAC according to a register identifier of the instruction; and if determining that the instruction does not satisfy the register prediction condition, obtaining a predicted target jump-to address of the instruction from the second BTAC according to a program counter of the instruction. Therefore, the problem that branch prediction accuracy is affected during BTAC sharing is effectively solved.