; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -tut-simplifycfg -tut-simplifycfg-version=v1 < %s -S -verify-dom-info | FileCheck %s
; RUN: opt -tut-simplifycfg -tut-simplifycfg-version=v2 < %s -S -verify-dom-info | FileCheck %s
; RUN: opt -tut-simplifycfg -tut-simplifycfg-version=v3 < %s -S -verify-dom-info | FileCheck %s

; Check that we do not crash when we remove edges multiple times in
; the DomTreeUpdater.
define void @test() {
; CHECK-LABEL: @test(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    switch i8 undef, label [[IF_THEN_EPIL:%.*]] [
; CHECK-NEXT:    i8 32, label [[FOR_INC_EPIL:%.*]]
; CHECK-NEXT:    i8 46, label [[FOR_INC_EPIL]]
; CHECK-NEXT:    i8 95, label [[FOR_INC_EPIL]]
; CHECK-NEXT:    i8 45, label [[FOR_INC_EPIL]]
; CHECK-NEXT:    i8 126, label [[FOR_INC_EPIL]]
; CHECK-NEXT:    ]
; CHECK:       if.then.epil:
; CHECK-NEXT:    unreachable
; CHECK:       for.inc.epil:
; CHECK-NEXT:    ret void
;
entry:
  br label %for.body.epil

for.body.epil:                                    ; preds = %entry
  switch i8 undef, label %if.then.epil [
  i8 32, label %for.inc.epil
  i8 46, label %for.inc.epil
  i8 95, label %for.inc.epil
  i8 45, label %for.inc.epil
  i8 126, label %for.inc.epil
  ]

if.then.epil:                                     ; preds = %for.body.epil
  unreachable

for.inc.epil:                                     ; preds = %for.body.epil, %for.body.epil, %for.body.epil, %for.body.epil, %for.body.epil
  ret void
}