Data cache virtual hint way prediction, and applications thereof
US7594079B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2006 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Jan 24, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/6082
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A virtual hint based data cache way prediction scheme, and applications thereof. In an embodiment, a processor retrieves data from a data cache based on a virtual hint value or an alias way prediction value and forwards the data to dependent instructions before a physical address for the data is available. After the physical address is available, the physical address is compared to a physical address tag value for the forwarded data to verify that the forwarded data is the correct data. If the forwarded data is the correct data, a hit signal is generated. If the forwarded data is not the correct data, a miss signal is generated. Any instructions that operate on incorrect data are invalidated and/or replayed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.