[LLVMdev] idf_iterator and MachineFunctions

[Gordon Henriksen]

On 2007-03-18, at 03:22, Lang Hames wrote:

> Is there a recommended way to find the final block (the one with  
> successors={}) in a machine function?

This isn't a property of the CFG in the general case. However, the  
UnifyFunctionExitNodes transformation/analysis provides it. From  
getAnalysis<UnifyFunctionExitNodes>().getReturnBlock(), you can visit  
the basic block predecessors recursively.

— Gordon

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