Electrical computers and digital processing systems: processing – Dynamic instruction dependency checking – monitoring or... – Commitment control or register bypass
Reexamination Certificate
2005-10-04
2005-10-04
Chan, Eddie (Department: 2183)
Electrical computers and digital processing systems: processing
Dynamic instruction dependency checking, monitoring or...
Commitment control or register bypass
Reexamination Certificate
active
06952764
ABSTRACT:
A method for stopping replay tornadoes in a processor. The method of one embodiment comprises scheduling an instruction for execution speculatively. A determination is made whether the instruction executed correctly. The instruction is routed to a replay mechanism if the instruction did not execute correctly. A determination is made whether a replay tornado exists. The instruction is routed for re-execution if the instruction executed incorrectly and no replay tornado exists. Breaking the replay tornado if the replay tornado exists. Replay safe instructions in the pipeline are retired. Non-replay safe instructions in the pipeline are marked for re-execution. The non-replay safe instructions are rescheduled for re-execution.
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Hammarlund Per
Jourdan Stephan
Sager David J.
Chan Eddie
Li Aimee J.
Shah Ami Patel
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