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If the mispredict happen, is there a mechanism to abort the instructions(have been fetched or decoded)?
If there is the mechanism, how does it work?
Thanks very much!
For an in-order processor the mispredicted instructions are not executed and for an out-of-order one the any results that have been generated assuming the predicted path of the branch are discarded. Is there something more specific you are asking about? There's a Wikipedia article about out-of-order execution at
Out-of-order execution - Wikipedia, the free encyclopedia
ARM will not give information about how the internals of the processors work in public forums - it's not information developers need to know in order to make effective use of the CPUs.
Regards, Pete