Invention Grant
- Patent Title: Branch trace history compression
- Patent Title (中): 分支跟踪历史压缩
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Application No.: US12827916Application Date: 2010-06-30
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Publication No.: US08489866B2Publication Date: 2013-07-16
- Inventor: Brian Robert Mestan , Mauricio Jose Serrano
- Applicant: Brian Robert Mestan , Mauricio Jose Serrano
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Yee & Associates, P.C.
- Agent Libby Z. Toub
- Main IPC: G06F9/00
- IPC: G06F9/00

Abstract:
A method, data processing system, and computer program product for managing a branch trace environment. In response to a branch being taken for a first branch instruction that is conditional and direct in the branch instructions, a performance monitoring unit stores an effective address of the first branch instruction into a first entry in a set of entries in a memory. The performance monitoring unit counts each branch not taken in processing the branch instructions occurring after the first branch instruction to form a branch count. In response to a branch being taken during processing of subsequent branch instructions in the branch instructions after the first branch instruction, the performance monitoring unit determines whether to create a second entry in the set of entries in the memory using the branch count with a set of rules identifying when the second entry is to be made.
Public/Granted literature
- US20120005463A1 BRANCH TRACE HISTORY COMPRESSION Public/Granted day:2012-01-05
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