Method and apparatus for replacing data in an operand latch of a pipeline stage in a processor during a stall
US6401195B1 · kind B1 · utility
6Cited by
5References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 30, 1998 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Dec 30, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/3867
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one method, a hazard on a register is detected based on the register ID from a latch of a first stage of a processor pipeline. The pipeline is stalled after a stale value of the register is stored in a latch of a later stage of the pipeline. The stale value in the latch is then replaced with a fresh value while the pipeline is stalled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.