发明名称 Branch predicting apparatus and branch predicting method
摘要 A branch history stores execution history information of branch instructions, and predicts presence of a branch instruction and a corresponding branch destination. A first return address stack stores, when an execution of a call instruction of a subroutine is completed, address information of a return destination of a corresponding return instruction. A second return address stack stores, when presence of a call instruction of a subroutine is predicted, address information of a return destination of a corresponding return instruction. An output selecting unit selects, when presence of a return instruction is predicted, if address information is stored in the second return address stack, the address information as a result of the branch prediction with a highest priority, and outputs the address information selected.
申请公布号 US2006149948(A1) 申请公布日期 2006.07.06
申请号 US20050065712 申请日期 2005.02.25
申请人 FUJITSU LIMITED 发明人 YOKOI MEGUMI
分类号 G06F9/00 主分类号 G06F9/00
代理机构 代理人
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