Hi,

I'm currently studying some graph reduction passes.
It seems that LoopPeeling is only used when certain flag is turn on. I'm 
curious about the status and usage of this pass

Also, though the algorithm does the eligibility check, it doesn't do any 
suitability check - it just peels the first iteration anyway. To me, this 
doesn't make much sense, since force peeling the first iteration not always 
give you performance improvement. Is there any specific reasons for doing 
this?

Thank you.

Bekket

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