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e7fdef420d
IR that hasn't been through SimplifyCFG can look like this: br i1 %b, label %r, label %r Make sure we don't create duplicate Machine CFG edges in this case. Fix the machine code verifier to accept conditional branches with a single CFG edge. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162230 91177308-0d34-0410-b5e6-96231b3b80d8
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