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US 2003/0154364 A1Published application
Mechanism for instruction data forwarding in a pipeline processor
AssigneeHitachi, Ltd.
InventorsCHIH-JUI PENG, LEW CHUA-EOAN
Life of this patent
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Abstract
A method for forwarding data within a pipeline of a pipelined data processor having a plurality of execution pipeline stages where each stage accepts a plurality of operand inputs and generates a result. The result generated by each execution pipeline stage is selectively coupled to an operand input of one of the execution pipeline stages.
Claims9
A method for forwarding data within a pipeline of a pipelined data processor comprising the steps of:
- providing a plurality of execution pipeline stages where each stage accepts a plurality of operand inputs and generates a result;
- selectively coupling the result generated by each execution pipeline stage to an operand input of one of the execution pipeline stages.
A data processor comprising:
- a plurality of execution pipeline stages where each stage accepts a plurality of operand inputs and generates a result;
- a results bus distributing the generated results from each of the execution pipeline stages throughout the plurality of pipeline stages;
- a multiplexor associated with each execution pipeline stage operative to selectively couple the results bus to an operand input of the associated execution pipeline stages.
Dependencies are inferred from the claim text.