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Commit 76ac8f82 authored by Chris Lattner's avatar Chris Lattner
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Rework GlobalValue::removeDeadConstantUsers to always remove dead constant 

exprs hanging off a global, even if the global is not otherwise dead.  This
requires some tricky iterator gymnastics.

This implements Transforms/GlobalOpt/constantexpr-dangle.ll by deleting a
constantexpr that made it appear that the address of the function was taken.

llvm-svn: 34608
parent 49c505c6
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