Controlling execution of instructions for a processing pipeline having first out-of order execution circuitry and second execution circuitry
US9952871B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2015 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Jan 25, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/3889
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus comprises a processing pipeline comprising out-of-order execution circuitry and second execution circuitry. Control circuitry monitors at least one reordering metric indicative of an extent to which instructions are executed out of order by the out-of-order execution circuitry, and controls whether instructions are executed using the out-of-order execution circuitry or the second execution circuitry based on the reordering metric. A speculation metric indicative of a fraction of executed instructions that are flushed due to a mis-speculation can also be used to determine whether to execute instructions on first or second execution circuitry having different performance or energy consumption characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.