Conditional branch prediction using a long history
US10318304B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 25, 2015 |
| Grant date | Jun 11, 2019 |
| Priority date | — |
| Expiry date | Feb 23, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/3848
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and conditional branch predictors for predicting an outcome of a conditional branch instruction in a program executed by a processor using a long conditional branch history include generating a first index from a first portion of the conditional branch history and a second index from a second portion of the conditional branch history. The first index is then used to identify an entry in a first pattern history table including first prediction information; and the second index is used to identify an entry in a second pattern history table including second prediction information. The outcome of the conditional branch is predicted based on the first and second prediction information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.