Chandler Carruth c6334579e9 [LCG] Teach the ref edge removal to handle a ref edge that is trivial ...

due to a call cycle.

This actually crashed the ref removal before.

I've added a unittest that covers this kind of interesting graph
structure and mutation.

llvm-svn: 290645

2016-12-28 02:24:58 +00:00

79 KiB

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