High bandwidth logical register flush recovery
US11068267B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2019 |
| Grant date | Jul 20, 2021 |
| Priority date | — |
| Expiry date | Apr 24, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1471
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An aspect includes receiving a flush request at a processing unit that is in a current state defined by contents of registers in a register file. The processing unit includes a plurality of slices and the flush request includes an identifier of a previously issued instruction. The processing unit is restored to a previous state defined by contents of the registers in the register file prior to the previously issued instruction being issued. The restoring includes searching previous state buffers in at least two of the plurality of slices to locate data describing the contents of the registers in the register file prior to the previously issued instruction being issued. The restoring also includes combining the located data to generate results of the searching and updating the contents of the registers in the register file using a single port based at least in part on the results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.