[llvm-commits] Fix for MachineSink creating zombie defines

[Jan Sjodin]

>>  I was unsure if this is desirable for the generic function. Is that the 

> better place for this?
> 
> I can't imagine any user of SplitCriticalEdge would not want to
> preserve live-ins... and it looks like the other current caller,
> MachineLICM, suffers from the same issue.
> 


I attached a modified patch.

In MacineBasicBlock::SplitCriticalEdge it handles the case of LiveVariables,
Why is there both LiveVariables and livins?

- Jan
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