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US07676656B2 Minimizing unscheduled D-cache miss pipeline stalls in a cascaded delayed execution pipeline 失效
最小化级联延迟执行管道中的非计划D缓存未命中流水线停顿

Minimizing unscheduled D-cache miss pipeline stalls in a cascaded delayed execution pipeline
Abstract:
A method and apparatus for minimizing unscheduled D-cache miss pipeline stalls is provided. In one embodiment, execution of an instruction in a processor is scheduled. The processor may have at least one cascaded delayed execution pipeline unit having two or more execution pipelines that execute instructions in a common issue group in a delayed manner relative to each other. The method includes receiving an issue group of instructions, determining if a first instruction in the issue group is a load instruction, and if so, scheduling the first instruction to be executed in a pipeline in which execution is not delayed with respect to another pipeline in the cascaded delayed execution pipeline unit.
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