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; REQUIRES: asserts
; RUN: opt  < %s -passes='print<domfrontier>'  2>&1 | FileCheck %s

define void @a_linear_impl_fig_1() nounwind {
0:
  br label %1
1:
  br label %2
2:
  br label %3
3:
  br i1 1, label %12, label %4
4:
  br i1 1, label %5, label %1
5:
  br i1 1, label %8, label %6
6:
  br i1 1, label %7, label %4
7:
  ret void
8:
  br i1 1, label %9, label %1
9:
  br label %10
10:
  br i1 1, label %13, label %11
11:
  br i1 1, label %9, label %8
12:
  br i1 1, label %2, label %1
13:
   switch i32 0, label %1 [ i32 0, label %9
                              i32 1, label %8]
}

; CHECK: DominanceFrontier for function: a_linear_impl_fig_1
; CHECK-DAG:  DomFrontier for BB %0 is:
; CHECK-DAG:  DomFrontier for BB %11 is:   %{{[8|9]}} %{{[8|9]}}
; CHECK-DAG:  DomFrontier for BB %1 is:    %1
; CHECK-DAG:  DomFrontier for BB %2 is:    %{{[1|2]}} %{{[1|2]}}
; CHECK-DAG:  DomFrontier for BB %3 is:    %{{[1|2]}} %{{[1|2]}}
; CHECK-DAG:  DomFrontier for BB %12 is:   %{{[1|2]}} %{{[1|2]}}
; CHECK-DAG:  DomFrontier for BB %4 is:    %{{[1|4]}} %{{[1|4]}}
; CHECK-DAG:  DomFrontier for BB %5 is:    %{{[1|4]}} %{{[1|4]}}
; CHECK-DAG:  DomFrontier for BB %8 is:    %{{[1|8]}} %{{[1|8]}}
; CHECK-DAG:  DomFrontier for BB %6 is:    %4
; CHECK-DAG:  DomFrontier for BB %7 is:
; CHECK-DAG:  DomFrontier for BB %9 is:    %{{[1|8|9]}} %{{[1|8|9]}} %{{[1|8|9]}}
; CHECK-DAG:  DomFrontier for BB %10 is:   %{{[1|8|9]}} %{{[1|8|9]}} %{{[1|8|9]}}
; CHECK-DAG:  DomFrontier for BB %13 is:   %{{[1|8|9]}} %{{[1|8|9]}} %{{[1|8|9]}}