Invention Grant
- Patent Title: Branch predicting apparatus and branch predicting method
- Patent Title (中): 分支预测装置和分支预测方法
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Application No.: US10995158Application Date: 2004-11-24
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Publication No.: US07757071B2Publication Date: 2010-07-13
- Inventor: Megumi Yokoi , Masaki Ukai
- Applicant: Megumi Yokoi , Masaki Ukai
- Applicant Address: JP Kawasaki
- Assignee: Fujitsu Limited
- Current Assignee: Fujitsu Limited
- Current Assignee Address: JP Kawasaki
- Agency: Staas & Halsey LLP
- Priority: JP2004-222399 20040729
- Main IPC: G06F9/00
- IPC: G06F9/00

Abstract:
A return address in response to a return instruction corresponding to a call instruction is stored in a return address stack when a branch history detects presence of the call instruction. When the branch history detects the presence of the return instruction before a branch reservation station completes executing the call instruction, the return address in response to the return instruction is not stored in the return address stack. If so, an output selection circuit predicts a correct return target using information stored in the return address stack.
Public/Granted literature
- US20060026410A1 Branch predicting apparatus and branch predicting method Public/Granted day:2006-02-02
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