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.
