Imported Upstream version 5.18.0.205

Former-commit-id: 7f59f7e792705db773f1caecdaa823092f4e2927

external/llvm/test/Analysis/PostDominators/pr6047_d.ll

@@ -0,0 +1,32 @@
+; RUN: opt < %s -postdomtree -analyze | FileCheck %s
+define internal void @f() {
+entry:
+  br i1 1, label %a, label %b
+
+a:
+br label %c
+
+b:
+br label %c
+
+c:
+  br i1 undef, label %bb35, label %bb3.i
+
+bb3.i:
+  br label %bb3.i
+
+bb35.loopexit3:
+  br label %bb35
+
+bb35:
+  ret void
+}
+; CHECK: Inorder PostDominator Tree:
+; CHECK-NEXT:   [1]  <<exit node>>
+; CHECK-NEXT:     [2] %bb35
+; CHECK-NEXT:       [3] %bb35.loopexit3
+; CHECK-NEXT:     [2] %c
+; CHECK-NEXT:       [3] %a
+; CHECK-NEXT:       [3] %entry
+; CHECK-NEXT:       [3] %b
+; CHECK-NEXT:     [2] %bb3.i