Stick and spoke replay with selectable delays

Details Stick and spoke replay with selectable delays Stick and spoke replay with selectable delays

2005-06-28

2005-06-28

Chan, Eddie (Department: 2183)

Electrical computers and digital processing systems: processing

Dynamic instruction dependency checking, monitoring or...

Reducing an impact of a stall or pipeline bubble

Reexamination Certificate

active

06912648

ABSTRACT:
A method for stick and spoke replay in a processor. The method of one embodiment comprises dispatching an instruction for execution. The instruction is speculatively executed. It is determined whether the instruction executed correctly. The instruction is routed to a replay mechanism if the instruction did not execute correctly. It is determined incorrect execution of the instruction is due to a long latency operation. The instruction is routed for immediate re-execution if the incorrect execution is not due to the long latency operation. The routing of the instruction for re-execution is delayed if the incorrect execution is due to the long latency operation. The instruction is re-executed if the instruction did not execute correctly. The instruction is retired if the instruction executed correctly.

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The Authoritative Dictionary of IEEE Standard Terms, 7th Ed., 2000, p. 716.

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