| 摘要 |
The present invention provides a system and method for prioritizing floating-point instructions in a cascaded pipeline. The system includes a cascaded delayed execution pipeline unit having a plurality of execution pipelines that execute instructions in a common issue group in a delayed manner relative to each other. The system further includes circuitry configured to: (1) receive an issue group of instructions; (2) determine if at least one floating-point instruction is in the issue group, if so scheduling the least one floating-point instruction in a one of the plurality of execution pipelines based upon a first prioritization scheme; (3) determine if there is an issue conflict for one of the plurality of execution pipelines; (4) resolve the issue conflict by scheduling one floating-point instruction causing the issue conflict in a different execution pipeline; and (5) schedule execution of the issue group of instructions in the cascaded delayed execution pipeline unit. |
