; LLVM IR from HarshCasper/NeoAlgo :: C-Plus-Plus/stack (Check_for_balanced_parenthesis)

; 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::stack" = type { %"class.std::deque" }
%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<char, std::allocator<char>>::_Deque_impl" }
%"struct.std::_Deque_base<char, std::allocator<char>>::_Deque_impl" = type { %"struct.std::_Deque_base<char, std::allocator<char>>::_Deque_impl_data" }
%"struct.std::_Deque_base<char, std::allocator<char>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_Z19areBracketsBalancedNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef %0) #0 personality ptr @__gxx_personality_v0 {
  %2 = alloca i1, align 1
  %3 = alloca ptr, align 8
  %4 = alloca %"class.std::stack", align 8
  %5 = alloca i8, align 1
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 80, ptr %4) #4
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEEC2IS2_vEEv(ptr noundef nonnull align 8 dereferenceable(80) %4)
  call void @llvm.lifetime.start.p0(i64 1, ptr %5) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %10

10:                                               ; preds = %104, %1
  %11 = load i32, ptr %6, align 4, !tbaa !9
  %12 = sext i32 %11 to i64
  %13 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %14 = icmp ult i64 %12, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %10
  store i32 2, ptr %7, align 4
  br label %107

16:                                               ; preds = %10
  %17 = load i32, ptr %6, align 4, !tbaa !9
  %18 = sext i32 %17 to i64
  %19 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %18)
          to label %20 unwind label %46

20:                                               ; preds = %16
  %21 = load i8, ptr %19, align 1, !tbaa !11
  %22 = sext i8 %21 to i32
  %23 = icmp eq i32 %22, 40
  br i1 %23, label %40, label %24

24:                                               ; preds = %20
  %25 = load i32, ptr %6, align 4, !tbaa !9
  %26 = sext i32 %25 to i64
  %27 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %26)
          to label %28 unwind label %46

28:                                               ; preds = %24
  %29 = load i8, ptr %27, align 1, !tbaa !11
  %30 = sext i8 %29 to i32
  %31 = icmp eq i32 %30, 91
  br i1 %31, label %40, label %32

32:                                               ; preds = %28
  %33 = load i32, ptr %6, align 4, !tbaa !9
  %34 = sext i32 %33 to i64
  %35 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %34)
          to label %36 unwind label %46

36:                                               ; preds = %32
  %37 = load i8, ptr %35, align 1, !tbaa !11
  %38 = sext i8 %37 to i32
  %39 = icmp eq i32 %38, 123
  br i1 %39, label %40, label %50

40:                                               ; preds = %36, %28, %20
  %41 = load i32, ptr %6, align 4, !tbaa !9
  %42 = sext i32 %41 to i64
  %43 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %42)
          to label %44 unwind label %46

44:                                               ; preds = %40
  invoke void @_ZNSt5stackIcSt5dequeIcSaIcEEE4pushERKc(ptr noundef nonnull align 8 dereferenceable(80) %4, ptr noundef nonnull align 1 dereferenceable(1) %43)
          to label %45 unwind label %46

45:                                               ; preds = %44
  br label %104

46:                                               ; preds = %91, %89, %77, %75, %63, %61, %54, %50, %44, %40, %32, %24, %16
  %47 = landingpad { ptr, i32 }
          cleanup
  %48 = extractvalue { ptr, i32 } %47, 0
  store ptr %48, ptr %8, align 8
  %49 = extractvalue { ptr, i32 } %47, 1
  store i32 %49, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  br label %118

50:                                               ; preds = %36
  %51 = invoke noundef zeroext i1 @_ZNKSt5stackIcSt5dequeIcSaIcEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %4)
          to label %52 unwind label %46

52:                                               ; preds = %50
  br i1 %51, label %53, label %54

53:                                               ; preds = %52
  store i1 false, ptr %2, align 1
  store i32 1, ptr %7, align 4
  br label %107

54:                                               ; preds = %52
  %55 = load i32, ptr %6, align 4, !tbaa !9
  %56 = sext i32 %55 to i64
  %57 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %56)
          to label %58 unwind label %46

58:                                               ; preds = %54
  %59 = load i8, ptr %57, align 1, !tbaa !11
  %60 = sext i8 %59 to i32
  switch i32 %60, label %103 [
    i32 41, label %61
    i32 125, label %75
    i32 93, label %89
  ]

61:                                               ; preds = %58
  %62 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %4)
          to label %63 unwind label %46

63:                                               ; preds = %61
  %64 = load i8, ptr %62, align 1, !tbaa !11
  store i8 %64, ptr %5, align 1, !tbaa !11
  invoke void @_ZNSt5stackIcSt5dequeIcSaIcEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %4)
          to label %65 unwind label %46

65:                                               ; preds = %63
  %66 = load i8, ptr %5, align 1, !tbaa !11
  %67 = sext i8 %66 to i32
  %68 = icmp eq i32 %67, 123
  br i1 %68, label %73, label %69

69:                                               ; preds = %65
  %70 = load i8, ptr %5, align 1, !tbaa !11
  %71 = sext i8 %70 to i32
  %72 = icmp eq i32 %71, 91
  br i1 %72, label %73, label %74

73:                                               ; preds = %69, %65
  store i1 false, ptr %2, align 1
  store i32 1, ptr %7, align 4
  br label %107

74:                                               ; preds = %69
  br label %103

75:                                               ; preds = %58
  %76 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %4)
          to label %77 unwind label %46

77:                                               ; preds = %75
  %78 = load i8, ptr %76, align 1, !tbaa !11
  store i8 %78, ptr %5, align 1, !tbaa !11
  invoke void @_ZNSt5stackIcSt5dequeIcSaIcEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %4)
          to label %79 unwind label %46

79:                                               ; preds = %77
  %80 = load i8, ptr %5, align 1, !tbaa !11
  %81 = sext i8 %80 to i32
  %82 = icmp eq i32 %81, 40
  br i1 %82, label %87, label %83

83:                                               ; preds = %79
  %84 = load i8, ptr %5, align 1, !tbaa !11
  %85 = sext i8 %84 to i32
  %86 = icmp eq i32 %85, 91
  br i1 %86, label %87, label %88

87:                                               ; preds = %83, %79
  store i1 false, ptr %2, align 1
  store i32 1, ptr %7, align 4
  br label %107

88:                                               ; preds = %83
  br label %103

89:                                               ; preds = %58
  %90 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %4)
          to label %91 unwind label %46

91:                                               ; preds = %89
  %92 = load i8, ptr %90, align 1, !tbaa !11
  store i8 %92, ptr %5, align 1, !tbaa !11
  invoke void @_ZNSt5stackIcSt5dequeIcSaIcEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %4)
          to label %93 unwind label %46

93:                                               ; preds = %91
  %94 = load i8, ptr %5, align 1, !tbaa !11
  %95 = sext i8 %94 to i32
  %96 = icmp eq i32 %95, 40
  br i1 %96, label %101, label %97

97:                                               ; preds = %93
  %98 = load i8, ptr %5, align 1, !tbaa !11
  %99 = sext i8 %98 to i32
  %100 = icmp eq i32 %99, 123
  br i1 %100, label %101, label %102

101:                                              ; preds = %97, %93
  store i1 false, ptr %2, align 1
  store i32 1, ptr %7, align 4
  br label %107

102:                                              ; preds = %97
  br label %103

103:                                              ; preds = %102, %88, %74, %58
  br label %104

104:                                              ; preds = %103, %45
  %105 = load i32, ptr %6, align 4, !tbaa !9
  %106 = add nsw i32 %105, 1
  store i32 %106, ptr %6, align 4, !tbaa !9
  br label %10, !llvm.loop !12

107:                                              ; preds = %101, %87, %73, %53, %15
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  %108 = load i32, ptr %7, align 4
  switch i32 %108, label %116 [
    i32 2, label %109
  ]

109:                                              ; preds = %107
  %110 = invoke noundef zeroext i1 @_ZNKSt5stackIcSt5dequeIcSaIcEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %4)
          to label %111 unwind label %112

111:                                              ; preds = %109
  store i1 %110, ptr %2, align 1
  store i32 1, ptr %7, align 4
  br label %116

112:                                              ; preds = %109
  %113 = landingpad { ptr, i32 }
          cleanup
  %114 = extractvalue { ptr, i32 } %113, 0
  store ptr %114, ptr %8, align 8
  %115 = extractvalue { ptr, i32 } %113, 1
  store i32 %115, ptr %9, align 4
  br label %118

116:                                              ; preds = %111, %107
  call void @llvm.lifetime.end.p0(i64 1, ptr %5) #4
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %4) #4
  call void @llvm.lifetime.end.p0(i64 80, ptr %4) #4
  %117 = load i1, ptr %2, align 1
  ret i1 %117

118:                                              ; preds = %112, %46
  call void @llvm.lifetime.end.p0(i64 1, ptr %5) #4
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %4) #4
  call void @llvm.lifetime.end.p0(i64 80, ptr %4) #4
  br label %119

119:                                              ; preds = %118
  %120 = load ptr, ptr %8, align 8
  %121 = load i32, ptr %9, align 4
  %122 = insertvalue { ptr, i32 } poison, ptr %120, 0
  %123 = insertvalue { ptr, i32 } %122, i32 %121, 1
  resume { ptr, i32 } %123
}

; 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 @_ZNSt5stackIcSt5dequeIcSaIcEEEC2IS2_vEEv(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEE4pushERKc(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 1 dereferenceable(1)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt5stackIcSt5dequeIcSaIcEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) #2 align 2

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #3 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 = { 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 #4 = { 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 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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::stack" = type { %"class.std::deque" }
%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<char, std::allocator<char>>::_Deque_impl" }
%"struct.std::_Deque_base<char, std::allocator<char>>::_Deque_impl" = type { %"struct.std::_Deque_base<char, std::allocator<char>>::_Deque_impl_data" }
%"struct.std::_Deque_base<char, std::allocator<char>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_Z19areBracketsBalancedNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef %0) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %2 = alloca %"class.std::stack", align 8
  call void @llvm.lifetime.start.p0(i64 80, ptr nonnull %2) #4
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEEC2IS2_vEEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  %3 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %.not26.not = icmp eq i64 %3, 0
  br i1 %.not26.not, label %.critedge, label %.lr.ph

.lr.ph:                                           ; preds = %1, %34
  %indvars.iv = phi i64 [ %indvars.iv.next, %34 ], [ 0, %1 ]
  %4 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %indvars.iv)
  %5 = load i8, ptr %4, align 1, !tbaa !5
  %6 = icmp eq i8 %5, 40
  br i1 %6, label %15, label %7

7:                                                ; preds = %.lr.ph
  %8 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %indvars.iv)
  %9 = load i8, ptr %8, align 1, !tbaa !5
  %10 = icmp eq i8 %9, 91
  br i1 %10, label %15, label %11

11:                                               ; preds = %7
  %12 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %indvars.iv)
  %13 = load i8, ptr %12, align 1, !tbaa !5
  %14 = icmp eq i8 %13, 123
  br i1 %14, label %15, label %19

15:                                               ; preds = %11, %7, %.lr.ph
  %16 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %indvars.iv)
  invoke void @_ZNSt5stackIcSt5dequeIcSaIcEEE4pushERKc(ptr noundef nonnull align 8 dereferenceable(80) %2, ptr noundef nonnull align 1 dereferenceable(1) %16)
          to label %34 unwind label %17

17:                                               ; preds = %15
  %18 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %2) #4
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %2) #4
  resume { ptr, i32 } %18

19:                                               ; preds = %11
  %20 = call noundef zeroext i1 @_ZNKSt5stackIcSt5dequeIcSaIcEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  br i1 %20, label %.loopexit, label %21

21:                                               ; preds = %19
  %22 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %indvars.iv)
  %23 = load i8, ptr %22, align 1, !tbaa !5
  switch i8 %23, label %34 [
    i8 41, label %24
    i8 125, label %28
    i8 93, label %31
  ]

24:                                               ; preds = %21
  %25 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  %26 = load i8, ptr %25, align 1, !tbaa !5
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  %27 = and i8 %26, -33
  %or.cond = icmp eq i8 %27, 91
  br i1 %or.cond, label %.loopexit, label %34

28:                                               ; preds = %21
  %29 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  %30 = load i8, ptr %29, align 1, !tbaa !5
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  switch i8 %30, label %34 [
    i8 91, label %.loopexit
    i8 40, label %.loopexit
  ]

31:                                               ; preds = %21
  %32 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  %33 = load i8, ptr %32, align 1, !tbaa !5
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  switch i8 %33, label %34 [
    i8 123, label %.loopexit
    i8 40, label %.loopexit
  ]

34:                                               ; preds = %31, %28, %21, %24, %15
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %35 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %.not = icmp ugt i64 %35, %indvars.iv.next
  br i1 %.not, label %.lr.ph, label %.critedge, !llvm.loop !8

.critedge:                                        ; preds = %34, %1
  %36 = call noundef zeroext i1 @_ZNKSt5stackIcSt5dequeIcSaIcEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  br label %.loopexit

.loopexit:                                        ; preds = %19, %24, %28, %28, %31, %31, %.critedge
  %.1 = phi i1 [ %36, %.critedge ], [ false, %31 ], [ false, %31 ], [ false, %28 ], [ false, %28 ], [ false, %24 ], [ false, %19 ]
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %2) #4
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %2) #4
  ret i1 %.1
}

; 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 @_ZNSt5stackIcSt5dequeIcSaIcEEEC2IS2_vEEv(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) local_unnamed_addr #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEE4pushERKc(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 1 dereferenceable(1)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt5stackIcSt5dequeIcSaIcEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #2 align 2

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #3 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 = { 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 #4 = { 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


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