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50c05c91f9
It seems that when I fixed this, almost exactly a year ago, I did not quite do it correctly. When we have duplicate block predecessors, we can indeed not have different incoming values for the same block, but we *must* have duplicate entries. So, instead of skipping the duplicates, we explicitly add the duplicate incoming values. Fixes PR20442. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214423 91177308-0d34-0410-b5e6-96231b3b80d8
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