Method and apparatus for profiling of non-instrumented programs and dynamic processing of profile data
US6233678A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1998 |
| Grant date | May 15, 2001 |
| Priority date | — |
| Expiry date | Nov 5, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/323
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method are shown for collecting a branch history value of a program executing in a processor. A current start address register latches a program count value in response to a trace termination condition, such as an indirect branch instruction. A current branch history register is cleared in response to the trace termination condition and shifts in a branch outcome value of the processor in response to a conditional direct branch instruction. A last trace start address latches the content of the current trace start address and a last branch history register latches the content of the current branch history register when a trace termination condition occurs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.