David Majnemer 5554edabef [CloneFunction] Don't remove unrelated nodes from the CGSSC ...

CGSCC use a WeakVH to track call sites.  RAUW a call within a function
can result in that WeakVH getting confused about whether or not the call
site is still around.

llvm-svn: 279268

2016-08-19 16:37:40 +00:00

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