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2010 Jul 08
1
[LLVMdev] Why shouldn't function entry blocks have predecessors?
It's past 3 AM here, so maybe I really shouldn't be answering in this state of awakeness. However, what I understand from your example is that loops with counters must be entered from another block in order to use the phi instruction correctly, not that it should be invalid to branch to the entry block. It seems to me that it makes sense to go back to the entry point if looping is not