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
- Patent Title: Single hot forward interconnect scheme for delayed execution pipelines
- Patent Title (中): 用于延迟执行管道的单个热向前互连方案
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Application No.: US11769104Application Date: 2007-06-27
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Publication No.: US07769987B2Publication Date: 2010-08-03
- Inventor: David Arnold Luick
- Applicant: David Arnold Luick
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Patterson & Sheridan LLP
- Main IPC: G06F9/38
- IPC: G06F9/38

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.
Public/Granted literature
- US20090006819A1 Single Hot Forward Interconnect Scheme for Delayed Execution Pipelines Public/Granted day:2009-01-01
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