[LLVMdev] [PATCH] Add functionality to scc_iterator

[Patrick Simmons]

Chris Lattner wrote:
> On Aug 7, 2009, at 12:51 PM, Vikram S. Adve wrote:
>
>   
>> Checking if a graph node is in a cycle or not must be a relatively
>> common query.  E.g., we used this on DS graphs to decide if DS node
>> represented multiple objects or a single object.  It's the basic query
>> to decide if a function is part of a recursive computation (a cycle in
>> the call graph).  CFGs happen to have special code for natural loops
>> but you could use this query to handle irreducible loops as well.
>>     
>
> These typically don't use the scciterator though.
>
> -Chris
>
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>   
Is there a better method for checking whether a basic block is part of a 
cycle I should be using?

--Patrick

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