Load-store dependency predictor PC hashing
US9600289B2 · kind B2 · utility
6Cited by
68References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 2012 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | Apr 22, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/9014
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and processors for managing load-store dependencies in an out-of-order instruction pipeline. A load store dependency predictor includes a table for storing entries for load-store pairs that have been found to be dependent and execute out of order. Each entry in the table includes hashed values to identify load and store operations. When a load or store operation is detected, the PC and an architectural register number are used to create a hashed value that can be used to uniquely identify the operation. Then, the load store dependency predictor table is searched for any matching entries with the same hashed value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.