发明申请
US20060026410A1 Branch predicting apparatus and branch predicting method 失效
分支预测装置和分支预测方法

  • 专利标题: Branch predicting apparatus and branch predicting method
  • 专利标题(中): 分支预测装置和分支预测方法
  • 申请号: US10995158
    申请日: 2004-11-24
  • 公开(公告)号: US20060026410A1
    公开(公告)日: 2006-02-02
  • 发明人: Megumi YokoiMasaki Ukai
  • 申请人: Megumi YokoiMasaki Ukai
  • 申请人地址: JP Kawasaki
  • 专利权人: Fujitsu Limited
  • 当前专利权人: Fujitsu Limited
  • 当前专利权人地址: JP Kawasaki
  • 优先权: JP2004-222399 20040729
  • 主分类号: G06F9/44
  • IPC分类号: G06F9/44
Branch predicting apparatus and branch predicting method
摘要:
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.
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