Method and apparatus for fast, speculative floating point register renaming
US6697933B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2000 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Mar 30, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/3858
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
According to one aspect of the invention, a method is provided in which a current instance of an instruction is received. The current instance of the instruction contains a reference to a logical floating point register. A first rename phase is performed to convert the current's instance reference to the logical floating point register into a reference to an absolute register. A second rename phase is performed in parallel with the first rename phase to convert the reference to the absolute register into a reference to a physical register, based upon results obtained from performing the first rename phase with respect to a previous instance of the instruction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.