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Commit 0a12729f authored by Duncan P. N. Exon Smith's avatar Duncan P. N. Exon Smith
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SimplifyCFG: Avoid dereferencing end() 

When comparing a User* to a BasicBlock::iterator in
passingValueIsAlwaysUndefined, don't dereference the iterator in case it
is end().

llvm-svn: 278872
parent 39eec466
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