Dynamic thread sharing in branch prediction structures
US9898299B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2015 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | Mar 21, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/4806
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments relate to multithreaded branch prediction. An aspect includes a system for dynamically evaluating how to share entries of a multithreaded branch prediction structure. The system includes a first-level branch target buffer coupled to a processor circuit. The processor circuit is configured to perform a method. The method includes receiving a search request to locate branch prediction information associated with the search request, and searching for an entry corresponding to the search request in the first-level branch prediction structure. The entry is not allowed based on a thread state of the entry indicating that the entry has caused a problem on a thread associated with the thread state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.