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      1 ; RUN: opt < %s -postdomtree -analyze | FileCheck %s
      2 define internal void @f() {
      3 entry:
      4   br i1 1, label %a, label %b
      5 
      6 a:
      7 br label %c
      8 
      9 b:
     10 br label %c
     11 
     12 c:
     13   br i1 undef, label %bb35, label %bb3.i
     14 
     15 bb3.i:
     16   br label %bb3.i
     17 
     18 bb35.loopexit3:
     19   br label %bb35
     20 
     21 bb35:
     22   ret void
     23 }
     24 ; CHECK: [4] %entry
     25