;; Check that we don't crash. PR37300.
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt %s -S -simplifycfg -simplifycfg-require-and-preserve-domtree=1 | FileCheck %s

define void @patatino() {
; CHECK-LABEL: @patatino(
; CHECK-NEXT:  bb:
; CHECK-NEXT:    ret void
;
bb:
  %tmp = icmp eq i32 7, 0
  br label %bb3
bb3:                                              ; preds = %bb2, %bb
  br label %bb36
bb5:                                              ; preds = %bb4
  %tmp7 = icmp ne i32 7, 0
  %tmp8 = and i1 true, %tmp7
  br i1 %tmp8, label %bb16, label %bb14
bb9:                                              ; preds = %bb33, %bb10
  br label %bb18
bb10:                                             ; preds = %bb19, %bb13
  %tmp11 = add nsw i32 2, 1
  %tmp12 = icmp eq i32 %tmp11, 0
  br i1 %tmp12, label %bb17, label %bb9
bb13:                                             ; preds = %bb18, %bb13
  br label %bb10
bb14:                                             ; preds = %bb17, %bb6, %bb5
  br label %bb35
bb16:                                             ; preds = %bb6
  br label %bb31
bb17:                                             ; preds = %bb32, %bb10
  br label %bb14
bb18:                                             ; preds = %bb9
  br label %bb13
bb21:                                             ; preds = %bb31, %bb23
  %tmp22 = phi i32 [ 0, %bb23 ], [ 0, %bb31 ]
  br label %bb27
bb23:                                             ; preds = %bb29, %bb28, %bb26
  %tmp24 = add nsw i32 %tmp22, 1
  %tmp25 = icmp eq i32 %tmp24, 0
  br i1 %tmp25, label %bb32, label %bb21
bb27:                                             ; preds = %bb21
  br label %bb30
bb28:                                             ; preds = %bb30
  br label %bb23
bb30:                                             ; preds = %bb30, %bb27
  br label %bb28
bb31:                                             ; preds = %bb16
  br label %bb21
bb32:                                             ; preds = %bb23
  br label %bb17
bb35:                                             ; preds = %bb14
  br label %bb3
bb36:                                             ; preds = %bb3, %bb3
  br label %bb37
bb37:                                             ; preds = %bb36
  %tmp39 = and i1 %tmp, true
  br i1 %tmp39, label %bb40, label %bb67
bb40:                                             ; preds = %bb38
  br i1 %tmp, label %bb42, label %bb41
bb41:                                             ; preds = %bb40
  br label %bb43
bb42:                                             ; preds = %bb40
  br label %bb66
bb43:                                             ; preds = %bb41
  br label %bb44
bb44:                                             ; preds = %bb61, %bb43
  %tmp45 = phi i32 [ 0, %bb61 ], [ 0, %bb43 ]
  %tmp46 = phi i32 [ %tmp62, %bb61 ], [ 0, %bb43 ]
  br label %bb51
bb48:                                             ; preds = %bb47
  br label %bb49
bb49:                                             ; preds = %bb48
  %tmp50 = phi i32 [ 0, %bb48 ]
  br label %bb61
bb51:                                             ; preds = %bb44
  br label %bb52
bb52:                                             ; preds = %bb55, %bb51
  %tmp53 = phi i32 [ %tmp46, %bb51 ], [ 0, %bb55 ]
  br label %bb55
bb54:                                             ; preds = %bb52
  br label %bb55
bb55:                                             ; preds = %bb54, %bb52
  %tmp56 = phi i32 [ 0, %bb54 ], [ 0, %bb52 ]
  %tmp57 = shl i32 %tmp56, 16
  br i1 false, label %bb52, label %bb58
bb58:                                             ; preds = %bb55
  %tmp59 = phi i32 [ 0, %bb55 ]
  %tmp60 = phi i32 [ %tmp53, %bb55 ]
  br label %bb61
bb61:                                             ; preds = %bb58, %bb49
  %tmp62 = phi i32 [ %tmp59, %bb58 ], [ %tmp50, %bb49 ]
  %tmp63 = add nsw i32 %tmp45, 1
  %tmp64 = icmp eq i32 %tmp63, 0
  br i1 %tmp64, label %bb65, label %bb44
bb65:                                             ; preds = %bb61
  br label %bb66
bb66:                                             ; preds = %bb65, %bb42
  br label %bb67
bb67:                                             ; preds = %bb66, %bb38
  ret void
}