Stick and spoke replay with selectable delays
US6912648B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2001 |
| Grant date | Jun 28, 2005 |
| Priority date | — |
| Expiry date | Apr 30, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/3842
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for stick and spoke replay in a processor. The method of one embodiment comprises dispatching an instruction for execution. The instruction is speculatively executed. It is determined whether the instruction executed correctly. The instruction is routed to a replay mechanism if the instruction did not execute correctly. It is determined incorrect execution of the instruction is due to a long latency operation. The instruction is routed for immediate re-execution if the incorrect execution is not due to the long latency operation. The routing of the instruction for re-execution is delayed if the incorrect execution is due to the long latency operation. The instruction is re-executed if the instruction did not execute correctly. The instruction is retired if the instruction executed correctly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.