Information handling system with real and virtual load/store instruction issue queue
US8041928B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2008 |
| Grant date | Oct 18, 2011 |
| Priority date | — |
| Expiry date | Dec 3, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/3851
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An information handling system includes a processor that may perform issue queue virtual load/store instruction operations. The issue queue maintains load and store instructions with a real/virtual dependency flag. The issue queue provides storage resources for real and virtual load/store instructions. Real load/store instructions execute in a load store unit LSU. Virtual load/store instructions are pending execution in the LSU. The LSU may keep track of each virtual load/store instruction within the issue queue by thread, type, and pointer data. Provided that all dependencies are clear for a pending virtual load/store instruction, the LSU marks the pending virtual load/store instruction as real. The pending virtual load/store instruction may then issue to the LSU as a real load/store instruction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.