Early exit transformations for software pipelining
US6571385B1 · kind B1 · utility
26Cited by
9References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1999 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Mar 22, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/30094
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention is directed to the transformation of software loops having early exit conditions, thereby allowing the loops to be more effectively converted to a single basic block for software pipelining. The invention assigns a predicate register for each early exit condition of the software loop. The predicate registers are set when the corresponding early exit condition is satisfied. In this manner, when the loop terminates the predicate registers can be examined to indicate which early exit conditions were satisfied. The invention produces loops having a lower recurrence II and resource II than conventional techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.