Invention Grant
- Patent Title: Address manipulation using indices and tags
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Application No.: US16739540Application Date: 2020-01-10
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Publication No.: US11080062B2Publication Date: 2021-08-03
- Inventor: Parthiv Pota , Sanjay Patel , Raj Kumar Singh Parihar
- Applicant: MIPS Tech, LLC
- Applicant Address: US CA Santa Clara
- Assignee: MIPS Tech, LLC
- Current Assignee: MIPS Tech, LLC
- Current Assignee Address: US CA Santa Clara
- Agency: Fernandez & Associates, LLP
- Main IPC: G06F9/38
- IPC: G06F9/38 ; G06F9/30

Abstract:
Techniques are disclosed for address manipulation using indices and tags. A first index is generated from bits of a processor program counter, where the first index is used to access a branch predictor bimodal table. A first branch prediction is provided from the bimodal table, based on the first index. The first branch prediction is matched against N tables, where the tables contain prior branch histories, and where: the branch history in table T(N) is of greater length than the branch history of table T(N−1), and the branch history in table T(N−1) is of greater length than the branch history of table T(N−2). A processor address is manipulated using a greatest length of hits of branch prediction matches from the N tables, based on one or more hits occurring. The branch predictor address is manipulated using the first branch prediction from the bimodal table, based on zero hits occurring.
Public/Granted literature
- US20200225955A1 ADDRESS MANIPULATION USING INDICES AND TAGS Public/Granted day:2020-07-16
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