Jakob Stoklund Olesen dff6a6e4f1 Teach ConnectedVNInfoEqClasses::Classify to deal with unused values. ...

We don't want unused values forming their own equivalence classes, so we lump
them all together in one class, and then merge them with the class of the last
used value.

llvm-svn: 117670

2010-10-29 17:37:29 +00:00

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