Validating prediction for branches in a cluster via comparison of predicted and condition selected tentative target addresses and validation of branch conditions
US6304960A · kind A · utility
43Cited by
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25Claims
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Key dates
| Filing date | Aug 6, 1998 |
| Grant date | Oct 16, 2001 |
| Priority date | — |
| Expiry date | Aug 6, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/3861
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for validating branch predictions for clusters of branch instructions includes an address validation module and a condition validation module. The address validation module determines target addresses for the branches in the cluster. One of the determined target addresses is selected, using predicted branch directions. The selected target address is compared with a predicted target address, and resolved branch directions are compared with predicted branch directions. A misprediction is indicated if either comparison fails.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.