Invention Grant
- Patent Title: Hybrid and aggregrate branch prediction system with a tagged branch orientation predictor for prediction override or pass-through
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Application No.: US16380737Application Date: 2019-04-10
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Publication No.: US11416257B2Publication Date: 2022-08-16
- Inventor: Naga P. Gorti , Ehsan Fatehi , Nicholas R. Orzol , Christian Zoellin , Edmund J. Gieske
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Patterson + Sheridan, LLP
- Main IPC: G06F9/38
- IPC: G06F9/38 ; G06F11/34
Abstract:
Branch prediction in an instruction using a tag orientation predictor (TOP) is described. When a branch instruction is hotly mis-predicted by a hybrid branch predictor, the branch is tracked over a longer time period using the TOP. Once the TOP has collected enough data to confidently predict a branch prediction, the TOP is used to override a branch prediction from the hybrid predictor when the TOP branch prediction.
Public/Granted literature
- US20200326951A1 TAGGED BRANCH ORIENTATION PREDICTOR Public/Granted day:2020-10-15
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