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Commit b4563109 authored by Sanjay Patel's avatar Sanjay Patel
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[SimplifyCFG] avoid crashing after simplifying a switch (PR42737) 

Later code in TryToSimplifyUncondBranchFromEmptyBlock() assumes that
we have cleaned up unreachable blocks, but that was not happening
with this switch transform.

llvm-svn: 367037
parent cbeff368
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