; LLVM IR from Lakhankumawat/LearnCPP :: T-Tree/G-GenricTree/IterativePreorderandPostorder.ll (Z24iterativePreAndPostOrderP4Node)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::stack" = type { %"class.std::deque" }
%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<std::pair<Node *, int>, std::allocator<std::pair<Node *, int>>>::_Deque_impl" }
%"struct.std::_Deque_base<std::pair<Node *, int>, std::allocator<std::pair<Node *, int>>>::_Deque_impl" = type { %"struct.std::_Deque_base<std::pair<Node *, int>, std::allocator<std::pair<Node *, int>>>::_Deque_impl_data" }
%"struct.std::_Deque_base<std::pair<Node *, int>, std::allocator<std::pair<Node *, int>>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }
%"struct.std::pair" = type <{ ptr, i32, [4 x i8] }>
%"class.std::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }
%class.Node = type { i32, %"class.std::vector" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<Node *, std::allocator<Node *>>::_Vector_impl" }
%"struct.std::_Vector_base<Node *, std::allocator<Node *>>::_Vector_impl" = type { %"struct.std::_Vector_base<Node *, std::allocator<Node *>>::_Vector_impl_data" }
%"struct.std::_Vector_base<Node *, std::allocator<Node *>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@.str = external hidden unnamed_addr constant [2 x i8], align 1
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_Z24iterativePreAndPostOrderP4Node(ptr noundef %0) #0 personality ptr @__gxx_personality_v0 {
  %2 = alloca ptr, align 8
  %3 = alloca %"class.std::stack", align 8
  %4 = alloca %"struct.std::pair", align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca %"class.std::__cxx11::basic_string", align 8
  %9 = alloca %"class.std::__cxx11::basic_string", align 8
  %10 = alloca %"struct.std::pair", align 8
  %11 = alloca %"class.std::__cxx11::basic_string", align 8
  %12 = alloca %"class.std::__cxx11::basic_string", align 8
  %13 = alloca %"struct.std::pair", align 8
  %14 = alloca i32, align 4
  %15 = alloca %"class.std::__cxx11::basic_string", align 8
  %16 = alloca %"class.std::__cxx11::basic_string", align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 80, ptr %3) #6
  call void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEEC2IS6_vEEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
  call void @llvm.lifetime.start.p0(i64 16, ptr %4) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #6
  store i32 -1, ptr %5, align 4, !tbaa !9
  invoke void @_ZNSt4pairIP4NodeiEC2IRS1_iTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS6_S7_EEEbE4typeELb1EEEOS6_OS7_(ptr noundef nonnull align 8 dereferenceable(12) %4, ptr noundef nonnull align 8 dereferenceable(8) %2, ptr noundef nonnull align 4 dereferenceable(4) %5)
          to label %17 unwind label %42

17:                                               ; preds = %1
  invoke void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE4pushEOS3_(ptr noundef nonnull align 8 dereferenceable(80) %3, ptr noundef nonnull align 8 dereferenceable(12) %4)
          to label %18 unwind label %42

18:                                               ; preds = %17
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 16, ptr %4) #6
  call void @llvm.lifetime.start.p0(i64 32, ptr %8) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %8) #6
  call void @llvm.lifetime.start.p0(i64 32, ptr %9) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %9) #6
  br label %19

19:                                               ; preds = %117, %18
  %20 = invoke noundef i64 @_ZNKSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
          to label %21 unwind label %46

21:                                               ; preds = %19
  %22 = icmp ugt i64 %20, 0
  br i1 %22, label %23, label %119

23:                                               ; preds = %21
  call void @llvm.lifetime.start.p0(i64 16, ptr %10) #6
  %24 = invoke noundef nonnull align 8 dereferenceable(12) ptr @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
          to label %25 unwind label %50

25:                                               ; preds = %23
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %10, ptr align 8 %24, i64 16, i1 false)
  invoke void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
          to label %26 unwind label %50

26:                                               ; preds = %25
  %27 = getelementptr inbounds %"struct.std::pair", ptr %10, i32 0, i32 1
  %28 = load i32, ptr %27, align 8, !tbaa !11
  %29 = icmp eq i32 %28, -1
  br i1 %29, label %30, label %63

30:                                               ; preds = %26
  call void @llvm.lifetime.start.p0(i64 32, ptr %11) #6
  call void @llvm.lifetime.start.p0(i64 32, ptr %12) #6
  %31 = getelementptr inbounds %"struct.std::pair", ptr %10, i32 0, i32 0
  %32 = load ptr, ptr %31, align 8, !tbaa !13
  %33 = getelementptr inbounds %class.Node, ptr %32, i32 0, i32 0
  %34 = load i32, ptr %33, align 8, !tbaa !14
  call void @_ZNSt7__cxx119to_stringEi(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %12, i32 noundef %34) #6
  invoke void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_PKS5_(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %11, ptr noundef nonnull align 8 dereferenceable(32) %12, ptr noundef @.str)
          to label %35 unwind label %54

35:                                               ; preds = %30
  %36 = invoke noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %8, ptr noundef nonnull align 8 dereferenceable(32) %11)
          to label %37 unwind label %58

37:                                               ; preds = %35
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %11) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %12) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %12) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %11) #6
  %38 = getelementptr inbounds %"struct.std::pair", ptr %10, i32 0, i32 1
  %39 = load i32, ptr %38, align 8, !tbaa !11
  %40 = add nsw i32 %39, 1
  store i32 %40, ptr %38, align 8, !tbaa !11
  invoke void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE4pushERKS3_(ptr noundef nonnull align 8 dereferenceable(80) %3, ptr noundef nonnull align 8 dereferenceable(12) %10)
          to label %41 unwind label %50

41:                                               ; preds = %37
  br label %117

42:                                               ; preds = %17, %1
  %43 = landingpad { ptr, i32 }
          cleanup
  %44 = extractvalue { ptr, i32 } %43, 0
  store ptr %44, ptr %6, align 8
  %45 = extractvalue { ptr, i32 } %43, 1
  store i32 %45, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 16, ptr %4) #6
  br label %129

46:                                               ; preds = %125, %123, %121, %119, %19
  %47 = landingpad { ptr, i32 }
          cleanup
  %48 = extractvalue { ptr, i32 } %47, 0
  store ptr %48, ptr %6, align 8
  %49 = extractvalue { ptr, i32 } %47, 1
  store i32 %49, ptr %7, align 4
  br label %128

50:                                               ; preds = %37, %25, %23
  %51 = landingpad { ptr, i32 }
          cleanup
  %52 = extractvalue { ptr, i32 } %51, 0
  store ptr %52, ptr %6, align 8
  %53 = extractvalue { ptr, i32 } %51, 1
  store i32 %53, ptr %7, align 4
  br label %118

54:                                               ; preds = %30
  %55 = landingpad { ptr, i32 }
          cleanup
  %56 = extractvalue { ptr, i32 } %55, 0
  store ptr %56, ptr %6, align 8
  %57 = extractvalue { ptr, i32 } %55, 1
  store i32 %57, ptr %7, align 4
  br label %62

58:                                               ; preds = %35
  %59 = landingpad { ptr, i32 }
          cleanup
  %60 = extractvalue { ptr, i32 } %59, 0
  store ptr %60, ptr %6, align 8
  %61 = extractvalue { ptr, i32 } %59, 1
  store i32 %61, ptr %7, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %11) #6
  br label %62

62:                                               ; preds = %58, %54
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %12) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %12) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %11) #6
  br label %118

63:                                               ; preds = %26
  %64 = getelementptr inbounds %"struct.std::pair", ptr %10, i32 0, i32 1
  %65 = load i32, ptr %64, align 8, !tbaa !11
  %66 = icmp sge i32 %65, 0
  br i1 %66, label %67, label %99

67:                                               ; preds = %63
  %68 = getelementptr inbounds %"struct.std::pair", ptr %10, i32 0, i32 1
  %69 = load i32, ptr %68, align 8, !tbaa !11
  %70 = sext i32 %69 to i64
  %71 = getelementptr inbounds %"struct.std::pair", ptr %10, i32 0, i32 0
  %72 = load ptr, ptr %71, align 8, !tbaa !13
  %73 = getelementptr inbounds %class.Node, ptr %72, i32 0, i32 1
  %74 = call noundef i64 @_ZNKSt6vectorIP4NodeSaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %73) #6
  %75 = icmp ult i64 %70, %74
  br i1 %75, label %76, label %99

76:                                               ; preds = %67
  call void @llvm.lifetime.start.p0(i64 16, ptr %13) #6
  %77 = getelementptr inbounds %"struct.std::pair", ptr %10, i32 0, i32 0
  %78 = load ptr, ptr %77, align 8, !tbaa !13
  %79 = getelementptr inbounds %class.Node, ptr %78, i32 0, i32 1
  %80 = getelementptr inbounds %"struct.std::pair", ptr %10, i32 0, i32 1
  %81 = load i32, ptr %80, align 8, !tbaa !11
  %82 = sext i32 %81 to i64
  %83 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIP4NodeSaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %79, i64 noundef %82) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #6
  store i32 -1, ptr %14, align 4, !tbaa !9
  invoke void @_ZNSt4pairIP4NodeiEC2IRS1_iTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS6_S7_EEEbE4typeELb1EEEOS6_OS7_(ptr noundef nonnull align 8 dereferenceable(12) %13, ptr noundef nonnull align 8 dereferenceable(8) %83, ptr noundef nonnull align 4 dereferenceable(4) %14)
          to label %84 unwind label %90

84:                                               ; preds = %76
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #6
  %85 = getelementptr inbounds %"struct.std::pair", ptr %10, i32 0, i32 1
  %86 = load i32, ptr %85, align 8, !tbaa !11
  %87 = add nsw i32 %86, 1
  store i32 %87, ptr %85, align 8, !tbaa !11
  invoke void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE4pushERKS3_(ptr noundef nonnull align 8 dereferenceable(80) %3, ptr noundef nonnull align 8 dereferenceable(12) %10)
          to label %88 unwind label %94

88:                                               ; preds = %84
  invoke void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE4pushERKS3_(ptr noundef nonnull align 8 dereferenceable(80) %3, ptr noundef nonnull align 8 dereferenceable(12) %13)
          to label %89 unwind label %94

89:                                               ; preds = %88
  call void @llvm.lifetime.end.p0(i64 16, ptr %13) #6
  br label %116

90:                                               ; preds = %76
  %91 = landingpad { ptr, i32 }
          cleanup
  %92 = extractvalue { ptr, i32 } %91, 0
  store ptr %92, ptr %6, align 8
  %93 = extractvalue { ptr, i32 } %91, 1
  store i32 %93, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #6
  br label %98

94:                                               ; preds = %88, %84
  %95 = landingpad { ptr, i32 }
          cleanup
  %96 = extractvalue { ptr, i32 } %95, 0
  store ptr %96, ptr %6, align 8
  %97 = extractvalue { ptr, i32 } %95, 1
  store i32 %97, ptr %7, align 4
  br label %98

98:                                               ; preds = %94, %90
  call void @llvm.lifetime.end.p0(i64 16, ptr %13) #6
  br label %118

99:                                               ; preds = %67, %63
  call void @llvm.lifetime.start.p0(i64 32, ptr %15) #6
  call void @llvm.lifetime.start.p0(i64 32, ptr %16) #6
  %100 = getelementptr inbounds %"struct.std::pair", ptr %10, i32 0, i32 0
  %101 = load ptr, ptr %100, align 8, !tbaa !13
  %102 = getelementptr inbounds %class.Node, ptr %101, i32 0, i32 0
  %103 = load i32, ptr %102, align 8, !tbaa !14
  call void @_ZNSt7__cxx119to_stringEi(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %16, i32 noundef %103) #6
  invoke void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_PKS5_(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %15, ptr noundef nonnull align 8 dereferenceable(32) %16, ptr noundef @.str)
          to label %104 unwind label %107

104:                                              ; preds = %99
  %105 = invoke noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %9, ptr noundef nonnull align 8 dereferenceable(32) %15)
          to label %106 unwind label %111

106:                                              ; preds = %104
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %15) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %16) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %16) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %15) #6
  br label %116

107:                                              ; preds = %99
  %108 = landingpad { ptr, i32 }
          cleanup
  %109 = extractvalue { ptr, i32 } %108, 0
  store ptr %109, ptr %6, align 8
  %110 = extractvalue { ptr, i32 } %108, 1
  store i32 %110, ptr %7, align 4
  br label %115

111:                                              ; preds = %104
  %112 = landingpad { ptr, i32 }
          cleanup
  %113 = extractvalue { ptr, i32 } %112, 0
  store ptr %113, ptr %6, align 8
  %114 = extractvalue { ptr, i32 } %112, 1
  store i32 %114, ptr %7, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %15) #6
  br label %115

115:                                              ; preds = %111, %107
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %16) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %16) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %15) #6
  br label %118

116:                                              ; preds = %106, %89
  br label %117

117:                                              ; preds = %116, %41
  call void @llvm.lifetime.end.p0(i64 16, ptr %10) #6
  br label %19, !llvm.loop !20

118:                                              ; preds = %115, %98, %62, %50
  call void @llvm.lifetime.end.p0(i64 16, ptr %10) #6
  br label %128

119:                                              ; preds = %21
  %120 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull align 8 dereferenceable(32) %8)
          to label %121 unwind label %46

121:                                              ; preds = %119
  %122 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %120, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %123 unwind label %46

123:                                              ; preds = %121
  %124 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull align 8 dereferenceable(32) %9)
          to label %125 unwind label %46

125:                                              ; preds = %123
  %126 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %124, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %127 unwind label %46

127:                                              ; preds = %125
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %9) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %9) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %8) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %8) #6
  call void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %3) #6
  call void @llvm.lifetime.end.p0(i64 80, ptr %3) #6
  ret void

128:                                              ; preds = %118, %46
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %9) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %9) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %8) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %8) #6
  br label %129

129:                                              ; preds = %128, %42
  call void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %3) #6
  call void @llvm.lifetime.end.p0(i64 80, ptr %3) #6
  br label %130

130:                                              ; preds = %129
  %131 = load ptr, ptr %6, align 8
  %132 = load i32, ptr %7, align 4
  %133 = insertvalue { ptr, i32 } poison, ptr %131, 0
  %134 = insertvalue { ptr, i32 } %133, i32 %132, 1
  resume { ptr, i32 } %134
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEEC2IS6_vEEv(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE4pushEOS3_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 8 dereferenceable(12)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIP4NodeiEC2IRS1_iTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS6_S7_EEEbE4typeELb1EEEOS6_OS7_(ptr noundef nonnull align 8 dereferenceable(12), ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(4)) unnamed_addr #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(12) ptr @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80)) #2 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_PKS5_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), ptr noundef) #4

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt7__cxx119to_stringEi(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, i32 noundef) #5

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLERKS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE4pushERKS3_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 8 dereferenceable(12)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIP4NodeSaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIP4NodeSaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(32)) #4

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #4

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #5 align 2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #5 = { inlinehint mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #6 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 8}
!12 = !{!"_ZTSSt4pairIP4NodeiE", !6, i64 0, !10, i64 8}
!13 = !{!12, !6, i64 0}
!14 = !{!15, !10, i64 0}
!15 = !{!"_ZTS4Node", !10, i64 0, !16, i64 8}
!16 = !{!"_ZTSSt6vectorIP4NodeSaIS1_EE", !17, i64 0}
!17 = !{!"_ZTSSt12_Vector_baseIP4NodeSaIS1_EE", !18, i64 0}
!18 = !{!"_ZTSNSt12_Vector_baseIP4NodeSaIS1_EE12_Vector_implE", !19, i64 0}
!19 = !{!"_ZTSNSt12_Vector_baseIP4NodeSaIS1_EE17_Vector_impl_dataE", !6, i64 0, !6, i64 8, !6, i64 16}
!20 = distinct !{!20, !21}
!21 = !{!"llvm.loop.mustprogress"}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::stack" = type { %"class.std::deque" }
%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<std::pair<Node *, int>, std::allocator<std::pair<Node *, int>>>::_Deque_impl" }
%"struct.std::_Deque_base<std::pair<Node *, int>, std::allocator<std::pair<Node *, int>>>::_Deque_impl" = type { %"struct.std::_Deque_base<std::pair<Node *, int>, std::allocator<std::pair<Node *, int>>>::_Deque_impl_data" }
%"struct.std::_Deque_base<std::pair<Node *, int>, std::allocator<std::pair<Node *, int>>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }
%"struct.std::pair" = type <{ ptr, i32, [4 x i8] }>
%"class.std::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }

@.str = external hidden unnamed_addr constant [2 x i8], align 1
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_Z24iterativePreAndPostOrderP4Node(ptr noundef %0) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %2 = alloca ptr, align 8
  %3 = alloca %"class.std::stack", align 8
  %4 = alloca %"struct.std::pair", align 8
  %5 = alloca i32, align 4
  %6 = alloca %"class.std::__cxx11::basic_string", align 8
  %7 = alloca %"class.std::__cxx11::basic_string", align 8
  %8 = alloca %"struct.std::pair", align 8
  %9 = alloca %"class.std::__cxx11::basic_string", align 8
  %10 = alloca %"class.std::__cxx11::basic_string", align 8
  %11 = alloca %"struct.std::pair", align 8
  %12 = alloca i32, align 4
  %13 = alloca %"class.std::__cxx11::basic_string", align 8
  %14 = alloca %"class.std::__cxx11::basic_string", align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 80, ptr nonnull %3) #6
  call void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEEC2IS6_vEEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %4) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #6
  store i32 -1, ptr %5, align 4, !tbaa !9
  call void @_ZNSt4pairIP4NodeiEC2IRS1_iTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS6_S7_EEEbE4typeELb1EEEOS6_OS7_(ptr noundef nonnull align 8 dereferenceable(12) %4, ptr noundef nonnull align 8 dereferenceable(8) %2, ptr noundef nonnull align 4 dereferenceable(4) %5)
  invoke void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE4pushEOS3_(ptr noundef nonnull align 8 dereferenceable(80) %3, ptr noundef nonnull align 8 dereferenceable(12) %4)
          to label %15 unwind label %30

15:                                               ; preds = %1
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #6
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %4) #6
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %6) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #6
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %7) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #6
  %16 = call noundef i64 @_ZNKSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
  %.not14 = icmp eq i64 %16, 0
  br i1 %.not14, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %15
  %17 = getelementptr inbounds i8, ptr %8, i64 8
  br label %18

18:                                               ; preds = %.lr.ph, %72
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %8) #6
  %19 = call noundef nonnull align 8 dereferenceable(12) ptr @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %8, ptr noundef nonnull align 8 dereferenceable(16) %19, i64 16, i1 false)
  call void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
  %20 = load i32, ptr %17, align 8, !tbaa !11
  %21 = icmp eq i32 %20, -1
  br i1 %21, label %22, label %41

22:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %9) #6
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %10) #6
  %23 = load ptr, ptr %8, align 8, !tbaa !13
  %24 = load i32, ptr %23, align 8, !tbaa !14
  call void @_ZNSt7__cxx119to_stringEi(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %10, i32 noundef %24) #6
  invoke void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_PKS5_(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %9, ptr noundef nonnull align 8 dereferenceable(32) %10, ptr noundef nonnull @.str)
          to label %25 unwind label %36

25:                                               ; preds = %22
  %26 = invoke noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %6, ptr noundef nonnull align 8 dereferenceable(32) %9)
          to label %27 unwind label %38

27:                                               ; preds = %25
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %9) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %10) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %10) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %9) #6
  %28 = load i32, ptr %17, align 8, !tbaa !11
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr %17, align 8, !tbaa !11
  invoke void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE4pushERKS3_(ptr noundef nonnull align 8 dereferenceable(80) %3, ptr noundef nonnull align 8 dereferenceable(12) %8)
          to label %72 unwind label %34

30:                                               ; preds = %1
  %31 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #6
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %4) #6
  br label %84

32:                                               ; preds = %80, %78, %76, %._crit_edge
  %33 = landingpad { ptr, i32 }
          cleanup
  br label %83

34:                                               ; preds = %27
  %35 = landingpad { ptr, i32 }
          cleanup
  br label %74

36:                                               ; preds = %22
  %37 = landingpad { ptr, i32 }
          cleanup
  br label %40

38:                                               ; preds = %25
  %39 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %9) #6
  br label %40

40:                                               ; preds = %38, %36
  %.pn8 = phi { ptr, i32 } [ %39, %38 ], [ %37, %36 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %10) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %10) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %9) #6
  br label %74

41:                                               ; preds = %18
  %42 = icmp sgt i32 %20, -1
  br i1 %42, label %43, label %61

43:                                               ; preds = %41
  %44 = zext nneg i32 %20 to i64
  %45 = load ptr, ptr %8, align 8, !tbaa !13
  %46 = getelementptr inbounds i8, ptr %45, i64 8
  %47 = call noundef i64 @_ZNKSt6vectorIP4NodeSaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %46) #6
  %48 = icmp ugt i64 %47, %44
  br i1 %48, label %49, label %61

49:                                               ; preds = %43
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %11) #6
  %50 = load ptr, ptr %8, align 8, !tbaa !13
  %51 = getelementptr inbounds i8, ptr %50, i64 8
  %52 = load i32, ptr %17, align 8, !tbaa !11
  %53 = sext i32 %52 to i64
  %54 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIP4NodeSaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %51, i64 noundef %53) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %12) #6
  store i32 -1, ptr %12, align 4, !tbaa !9
  call void @_ZNSt4pairIP4NodeiEC2IRS1_iTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS6_S7_EEEbE4typeELb1EEEOS6_OS7_(ptr noundef nonnull align 8 dereferenceable(12) %11, ptr noundef nonnull align 8 dereferenceable(8) %54, ptr noundef nonnull align 4 dereferenceable(4) %12)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %12) #6
  %55 = load i32, ptr %17, align 8, !tbaa !11
  %56 = add nsw i32 %55, 1
  store i32 %56, ptr %17, align 8, !tbaa !11
  invoke void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE4pushERKS3_(ptr noundef nonnull align 8 dereferenceable(80) %3, ptr noundef nonnull align 8 dereferenceable(12) %8)
          to label %57 unwind label %59

57:                                               ; preds = %49
  invoke void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE4pushERKS3_(ptr noundef nonnull align 8 dereferenceable(80) %3, ptr noundef nonnull align 8 dereferenceable(12) %11)
          to label %58 unwind label %59

58:                                               ; preds = %57
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %11) #6
  br label %72

59:                                               ; preds = %57, %49
  %60 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %11) #6
  br label %74

61:                                               ; preds = %43, %41
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %13) #6
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %14) #6
  %62 = load ptr, ptr %8, align 8, !tbaa !13
  %63 = load i32, ptr %62, align 8, !tbaa !14
  call void @_ZNSt7__cxx119to_stringEi(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %14, i32 noundef %63) #6
  invoke void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_PKS5_(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %13, ptr noundef nonnull align 8 dereferenceable(32) %14, ptr noundef nonnull @.str)
          to label %64 unwind label %67

64:                                               ; preds = %61
  %65 = invoke noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %7, ptr noundef nonnull align 8 dereferenceable(32) %13)
          to label %66 unwind label %69

66:                                               ; preds = %64
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %13) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %14) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %14) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %13) #6
  br label %72

67:                                               ; preds = %61
  %68 = landingpad { ptr, i32 }
          cleanup
  br label %71

69:                                               ; preds = %64
  %70 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %13) #6
  br label %71

71:                                               ; preds = %69, %67
  %.pn = phi { ptr, i32 } [ %70, %69 ], [ %68, %67 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %14) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %14) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %13) #6
  br label %74

72:                                               ; preds = %58, %66, %27
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %8) #6
  %73 = call noundef i64 @_ZNKSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
  %.not = icmp eq i64 %73, 0
  br i1 %.not, label %._crit_edge, label %18, !llvm.loop !20

74:                                               ; preds = %71, %59, %40, %34
  %.pn10 = phi { ptr, i32 } [ %35, %34 ], [ %.pn8, %40 ], [ %60, %59 ], [ %.pn, %71 ]
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %8) #6
  br label %83

._crit_edge:                                      ; preds = %72, %15
  %75 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull align 8 dereferenceable(32) %6)
          to label %76 unwind label %32

76:                                               ; preds = %._crit_edge
  %77 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %75, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %78 unwind label %32

78:                                               ; preds = %76
  %79 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull align 8 dereferenceable(32) %7)
          to label %80 unwind label %32

80:                                               ; preds = %78
  %81 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %79, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %82 unwind label %32

82:                                               ; preds = %80
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %7) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %6) #6
  call void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %3) #6
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %3) #6
  ret void

83:                                               ; preds = %74, %32
  %.pn10.pn = phi { ptr, i32 } [ %.pn10, %74 ], [ %33, %32 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %7) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %6) #6
  br label %84

84:                                               ; preds = %83, %30
  %.pn10.pn.pn = phi { ptr, i32 } [ %.pn10.pn, %83 ], [ %31, %30 ]
  call void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %3) #6
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %3) #6
  resume { ptr, i32 } %.pn10.pn.pn
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEEC2IS6_vEEv(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE4pushEOS3_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 8 dereferenceable(12)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIP4NodeiEC2IRS1_iTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS6_S7_EEEbE4typeELb1EEEOS6_OS7_(ptr noundef nonnull align 8 dereferenceable(12), ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(4)) unnamed_addr #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(12) ptr @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_PKS5_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), ptr noundef) local_unnamed_addr #4

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt7__cxx119to_stringEi(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, i32 noundef) local_unnamed_addr #5

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLERKS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEE4pushERKS3_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 8 dereferenceable(12)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIP4NodeSaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIP4NodeSaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #4

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #4

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackISt4pairIP4NodeiESt5dequeIS3_SaIS3_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #5 align 2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #5 = { inlinehint mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #6 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 8}
!12 = !{!"_ZTSSt4pairIP4NodeiE", !6, i64 0, !10, i64 8}
!13 = !{!12, !6, i64 0}
!14 = !{!15, !10, i64 0}
!15 = !{!"_ZTS4Node", !10, i64 0, !16, i64 8}
!16 = !{!"_ZTSSt6vectorIP4NodeSaIS1_EE", !17, i64 0}
!17 = !{!"_ZTSSt12_Vector_baseIP4NodeSaIS1_EE", !18, i64 0}
!18 = !{!"_ZTSNSt12_Vector_baseIP4NodeSaIS1_EE12_Vector_implE", !19, i64 0}
!19 = !{!"_ZTSNSt12_Vector_baseIP4NodeSaIS1_EE17_Vector_impl_dataE", !6, i64 0, !6, i64 8, !6, i64 16}
!20 = distinct !{!20, !21}
!21 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass