Processor with increased efficiency via control word prediction
US8819397B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2011 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Mar 29, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/3842
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatuses are provided for increased efficiency in a processor via control word prediction. The apparatus comprises an operational unit capable of determining whether an instruction will change a first control word to a second control word for processing dependent instructions. Execution units process the dependent instructions using a predicted control word and compare the second control word to the predicted control word. A scheduling unit causes the execution units to reprocess the dependent instructions when the predicted control word does not match the second control word. The method comprises determining that an instruction will change a first control word to a second control word and processing the dependent instructions using a predicted control word. The second control word is compared to the predicted control word and the dependent instructions are reprocessed using the second control word when the predicted control word does not match the second control word.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.