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