Invention Grant
US07769987B2 Single hot forward interconnect scheme for delayed execution pipelines 有权
用于延迟执行管道的单个热向前互连方案

Single hot forward interconnect scheme for delayed execution pipelines
Abstract:
A method and apparatus for forwarding data in a processor. The method includes providing at least one cascaded delayed execution pipeline unit having a first pipeline and a second pipeline, wherein the second pipeline executes instructions in a common issue group in a delayed manner relative to the first pipeline. The method further includes determining if a first instruction being executed in the first pipeline modifies data in a data register which is accessed by a second instruction being executed in the second pipeline. If the first instruction being executed in the first pipeline modifies data in the data register which is accessed by the second instruction being executed in the second pipeline, the modified data is forwarded from the first pipeline to the second pipeline.
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