; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -fix-irreducible -unify-loop-exits -structurizecfg -enable-new-pm=0 -S | FileCheck %s
define void @irreducible_mountain_bug(i1 %Pred0, i1 %Pred1, i1 %Pred2, i1 %Pred3, i1 %Pred4, i1 %Pred5, i1 %Pred6, i1 %Pred7, i1 %Pred8, i1 %Pred9, i1 %Pred10, i1 %Pred11, i1 %Pred12, i1 %Pred13) {
; CHECK-LABEL: @irreducible_mountain_bug(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[PRED0_INV:%.*]] = xor i1 [[PRED0:%.*]], true
; CHECK-NEXT:    [[PRED1_INV:%.*]] = xor i1 [[PRED1:%.*]], true
; CHECK-NEXT:    [[PRED2_INV:%.*]] = xor i1 [[PRED2:%.*]], true
; CHECK-NEXT:    [[PRED3_INV:%.*]] = xor i1 [[PRED3:%.*]], true
; CHECK-NEXT:    [[PRED5_INV:%.*]] = xor i1 [[PRED5:%.*]], true
; CHECK-NEXT:    [[PRED4_INV:%.*]] = xor i1 [[PRED4:%.*]], true
; CHECK-NEXT:    [[PRED10_INV:%.*]] = xor i1 [[PRED10:%.*]], true
; CHECK-NEXT:    [[PRED11_INV:%.*]] = xor i1 [[PRED11:%.*]], true
; CHECK-NEXT:    [[PRED12_INV:%.*]] = xor i1 [[PRED12:%.*]], true
; CHECK-NEXT:    [[PRED13_INV:%.*]] = xor i1 [[PRED13:%.*]], true
; CHECK-NEXT:    br i1 [[PRED0_INV]], label [[IF_THEN:%.*]], label [[FLOW19:%.*]]
; CHECK:       Flow19:
; CHECK-NEXT:    [[TMP0:%.*]] = phi i1 [ false, [[FLOW3:%.*]] ], [ true, [[ENTRY:%.*]] ]
; CHECK-NEXT:    br i1 [[TMP0]], label [[IF_END:%.*]], label [[FLOW20:%.*]]
; CHECK:       if.end:
; CHECK-NEXT:    br i1 [[PRED1_INV]], label [[IF_ELSE:%.*]], label [[FLOW18:%.*]]
; CHECK:       Flow18:
; CHECK-NEXT:    [[TMP1:%.*]] = phi i1 [ false, [[IF_ELSE]] ], [ true, [[IF_END]] ]
; CHECK-NEXT:    br i1 [[TMP1]], label [[IF_THEN7:%.*]], label [[IF_END16:%.*]]
; CHECK:       if.then7:
; CHECK-NEXT:    br label [[IF_END16]]
; CHECK:       if.else:
; CHECK-NEXT:    br label [[FLOW18]]
; CHECK:       Flow20:
; CHECK-NEXT:    br label [[EXIT:%.*]]
; CHECK:       if.end16:
; CHECK-NEXT:    br i1 [[PRED2_INV]], label [[IF_THEN39:%.*]], label [[FLOW16:%.*]]
; CHECK:       Flow16:
; CHECK-NEXT:    [[TMP2:%.*]] = phi i1 [ false, [[FLOW5:%.*]] ], [ true, [[IF_END16]] ]
; CHECK-NEXT:    br i1 [[TMP2]], label [[WHILE_COND_PREHEADER:%.*]], label [[FLOW17:%.*]]
; CHECK:       while.cond.preheader:
; CHECK-NEXT:    br label [[WHILE_COND:%.*]]
; CHECK:       Flow17:
; CHECK-NEXT:    br label [[FLOW20]]
; CHECK:       while.cond:
; CHECK-NEXT:    br i1 [[PRED3_INV]], label [[LOR_RHS:%.*]], label [[FLOW12:%.*]]
; CHECK:       Flow7:
; CHECK-NEXT:    [[TMP3:%.*]] = phi i1 [ [[PRED7:%.*]], [[COND_END61:%.*]] ], [ false, [[IRR_GUARD:%.*]] ]
; CHECK-NEXT:    [[TMP4:%.*]] = phi i1 [ false, [[COND_END61]] ], [ true, [[IRR_GUARD]] ]
; CHECK-NEXT:    br i1 [[TMP4]], label [[COND_TRUE49:%.*]], label [[FLOW8:%.*]]
; CHECK:       cond.true49:
; CHECK-NEXT:    br label [[FLOW8]]
; CHECK:       Flow8:
; CHECK-NEXT:    [[TMP5:%.*]] = phi i1 [ false, [[COND_TRUE49]] ], [ true, [[FLOW7:%.*]] ]
; CHECK-NEXT:    [[TMP6:%.*]] = phi i1 [ [[PRED4_INV]], [[COND_TRUE49]] ], [ [[TMP3]], [[FLOW7]] ]
; CHECK-NEXT:    br i1 [[TMP6]], label [[WHILE_BODY63:%.*]], label [[FLOW9:%.*]]
; CHECK:       while.body63:
; CHECK-NEXT:    br i1 [[PRED5_INV]], label [[WHILE_COND47:%.*]], label [[FLOW10:%.*]]
; CHECK:       Flow9:
; CHECK-NEXT:    [[TMP7:%.*]] = phi i1 [ true, [[FLOW10]] ], [ false, [[FLOW8]] ]
; CHECK-NEXT:    [[TMP8:%.*]] = phi i1 [ false, [[FLOW10]] ], [ [[TMP5]], [[FLOW8]] ]
; CHECK-NEXT:    [[TMP9:%.*]] = phi i1 [ [[TMP15:%.*]], [[FLOW10]] ], [ true, [[FLOW8]] ]
; CHECK-NEXT:    [[DOTINV11:%.*]] = xor i1 [[TMP7]], true
; CHECK-NEXT:    [[DOTINV:%.*]] = xor i1 [[TMP8]], true
; CHECK-NEXT:    br i1 [[TMP9]], label [[LOOP_EXIT_GUARD1:%.*]], label [[IRR_GUARD]]
; CHECK:       while.cond47:
; CHECK-NEXT:    br label [[FLOW10]]
; CHECK:       cond.end61:
; CHECK-NEXT:    br label [[FLOW7]]
; CHECK:       Flow14:
; CHECK-NEXT:    [[TMP10:%.*]] = phi i1 [ false, [[FLOW15:%.*]] ], [ true, [[LOOP_EXIT_GUARD1]] ]
; CHECK-NEXT:    [[TMP11:%.*]] = phi i1 [ [[TMP14:%.*]], [[FLOW15]] ], [ [[DOTINV]], [[LOOP_EXIT_GUARD1]] ]
; CHECK-NEXT:    br label [[FLOW13:%.*]]
; CHECK:       if.then69:
; CHECK-NEXT:    br label [[FLOW15]]
; CHECK:       lor.rhs:
; CHECK-NEXT:    br label [[FLOW12]]
; CHECK:       while.end76:
; CHECK-NEXT:    br label [[FLOW6:%.*]]
; CHECK:       if.then39:
; CHECK-NEXT:    br i1 [[PRED10_INV]], label [[IF_END_I145:%.*]], label [[FLOW5]]
; CHECK:       if.end.i145:
; CHECK-NEXT:    br i1 [[PRED11_INV]], label [[IF_END8_I149:%.*]], label [[FLOW4:%.*]]
; CHECK:       if.end8.i149:
; CHECK-NEXT:    br label [[FLOW4]]
; CHECK:       if.then:
; CHECK-NEXT:    br i1 [[PRED12_INV]], label [[IF_END_I:%.*]], label [[FLOW3]]
; CHECK:       if.end.i:
; CHECK-NEXT:    br i1 [[PRED13_INV]], label [[IF_END8_I:%.*]], label [[FLOW:%.*]]
; CHECK:       if.end8.i:
; CHECK-NEXT:    br label [[FLOW]]
; CHECK:       Flow:
; CHECK-NEXT:    br label [[FLOW3]]
; CHECK:       Flow3:
; CHECK-NEXT:    br label [[FLOW19]]
; CHECK:       Flow4:
; CHECK-NEXT:    br label [[FLOW5]]
; CHECK:       Flow5:
; CHECK-NEXT:    br label [[FLOW16]]
; CHECK:       Flow6:
; CHECK-NEXT:    br label [[FLOW17]]
; CHECK:       exit:
; CHECK-NEXT:    ret void
; CHECK:       Flow12:
; CHECK-NEXT:    [[TMP12:%.*]] = phi i1 [ false, [[LOR_RHS]] ], [ true, [[WHILE_COND]] ]
; CHECK-NEXT:    [[TMP13:%.*]] = phi i1 [ [[PRED9:%.*]], [[LOR_RHS]] ], [ [[PRED3]], [[WHILE_COND]] ]
; CHECK-NEXT:    br i1 [[TMP13]], label [[IRR_GUARD]], label [[FLOW13]]
; CHECK:       irr.guard:
; CHECK-NEXT:    [[GUARD_COND_TRUE49:%.*]] = phi i1 [ [[PRED6:%.*]], [[FLOW9]] ], [ [[TMP12]], [[FLOW12]] ]
; CHECK-NEXT:    [[GUARD_COND_TRUE49_INV:%.*]] = xor i1 [[GUARD_COND_TRUE49]], true
; CHECK-NEXT:    br i1 [[GUARD_COND_TRUE49_INV]], label [[COND_END61]], label [[FLOW7]]
; CHECK:       Flow15:
; CHECK-NEXT:    [[TMP14]] = phi i1 [ [[PRED8:%.*]], [[IF_THEN69:%.*]] ], [ [[DOTINV]], [[LOOP_EXIT_GUARD2:%.*]] ]
; CHECK-NEXT:    br label [[FLOW14:%.*]]
; CHECK:       loop.exit.guard:
; CHECK-NEXT:    br i1 [[TMP16:%.*]], label [[WHILE_END76:%.*]], label [[FLOW6]]
; CHECK:       Flow10:
; CHECK-NEXT:    [[TMP15]] = phi i1 [ false, [[WHILE_COND47]] ], [ true, [[WHILE_BODY63]] ]
; CHECK-NEXT:    br label [[FLOW9]]
; CHECK:       Flow13:
; CHECK-NEXT:    [[TMP16]] = phi i1 [ [[TMP10]], [[FLOW14]] ], [ true, [[FLOW12]] ]
; CHECK-NEXT:    [[TMP17:%.*]] = phi i1 [ [[TMP11]], [[FLOW14]] ], [ true, [[FLOW12]] ]
; CHECK-NEXT:    br i1 [[TMP17]], label [[LOOP_EXIT_GUARD:%.*]], label [[WHILE_COND]]
; CHECK:       loop.exit.guard1:
; CHECK-NEXT:    br i1 [[DOTINV]], label [[LOOP_EXIT_GUARD2]], label [[FLOW14]]
; CHECK:       loop.exit.guard2:
; CHECK-NEXT:    br i1 [[DOTINV11]], label [[IF_THEN69]], label [[FLOW15]]
;
entry:
  br i1 %Pred0, label %if.end, label %if.then

if.end:
  br i1 %Pred1, label %if.then7, label %if.else

if.then7:
  br label %if.end16

if.else:
  br label %if.end16

if.end16:
  br i1 %Pred2, label %while.cond.preheader, label %if.then39

while.cond.preheader:
  br label %while.cond

while.cond:
  br i1 %Pred3, label %cond.true49, label %lor.rhs

cond.true49:
  br i1 %Pred4, label %if.then69, label %while.body63

while.body63:
  br i1 %Pred5, label %exit, label %while.cond47

while.cond47:
  br i1 %Pred6, label %cond.true49, label %cond.end61

cond.end61:
  br i1 %Pred7, label %while.body63, label %while.cond

if.then69:
  br i1 %Pred8, label %exit, label %while.cond

lor.rhs:
  br i1 %Pred9, label %cond.end61, label %while.end76

while.end76:
  br label %exit

if.then39:
  br i1 %Pred10, label %exit, label %if.end.i145

if.end.i145:
  br i1 %Pred11, label %exit, label %if.end8.i149

if.end8.i149:
  br label %exit

if.then:
  br i1 %Pred12, label %exit, label %if.end.i

if.end.i:
  br i1 %Pred13, label %exit, label %if.end8.i

if.end8.i:
  br label %exit

exit:
  ret void
}