Invention Grant
US08745362B2 Operating system aware branch predictor using a dynamically reconfigurable branch history table
有权
使用动态可重配置分支历史表的操作系统感知分支预测器
- Patent Title: Operating system aware branch predictor using a dynamically reconfigurable branch history table
- Patent Title (中): 使用动态可重配置分支历史表的操作系统感知分支预测器
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Application No.: US12823288Application Date: 2010-06-25
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Publication No.: US08745362B2Publication Date: 2014-06-03
- Inventor: Robert H. Bell, Jr. , Wen-Tzer Thomas Chen
- Applicant: Robert H. Bell, Jr. , Wen-Tzer Thomas Chen
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: VanLeeuwen & VanLeeuwen
- Agent Matthew W. Baca
- Main IPC: G06F9/00
- IPC: G06F9/00
Abstract:
A processor resource manager assigns a branch history resource to a first execution mode. The branch history resource is utilized for predicting a branch direction of a branch instruction. Next, the resource manager logs a number of branch mispredictions that occur while the processor executes a second execution mode. The resource manager, in turn, reassigns the branch history resource to the second execution mode based upon the number of branch mispredictions.
Public/Granted literature
- US20110320793A1 OPERATING SYSTEM AWARE BRANCH PREDICTOR USING A DYNAMICALLY RECONFIGURABLE BRANCH HISTORY TABLE Public/Granted day:2011-12-29
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