; LLVM IR from Saikat2407/DSA_Hacktoberfest2023 :: c++/STACKS&QUEUE/S3.ll/Z7isValidNSt7 (cxx1112basic_stringIcSt11char_traitsIcESaIcEEE)

; 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 }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEEC2IS2_vEEv(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #1 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt5stackIcSt5dequeIcSaIcEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80)) #2 align 2

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_Z7isValidNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef %0) #1 personality ptr @__gxx_personality_v0 {
  %2 = alloca i1, align 1
  %3 = alloca ptr, align 8
  %4 = alloca %"class.std::stack", align 8
  %5 = alloca ptr, align 8
  %6 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %7 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %8 = alloca i32, align 4
  %9 = alloca i8, align 1
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  %12 = alloca i8, align 1
  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 8, ptr %5) #4
  store ptr %0, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = call ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(32) %13) #4
  %15 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %6, i32 0, i32 0
  store ptr %14, ptr %15, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = call ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(32) %16) #4
  %18 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %7, i32 0, i32 0
  store ptr %17, ptr %18, align 8
  br label %19

19:                                               ; preds = %86, %1
  %20 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8) %6, ptr noundef nonnull align 8 dereferenceable(8) %7) #4
  br i1 %20, label %22, label %21

21:                                               ; preds = %19
  store i32 2, ptr %8, align 4
  br label %89

22:                                               ; preds = %19
  call void @llvm.lifetime.start.p0(i64 1, ptr %9) #4
  %23 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #4
  %24 = load i8, ptr %23, align 1, !tbaa !9
  store i8 %24, ptr %9, align 1, !tbaa !9
  %25 = load i8, ptr %9, align 1, !tbaa !9
  %26 = sext i8 %25 to i32
  %27 = icmp eq i32 %26, 40
  br i1 %27, label %36, label %28

28:                                               ; preds = %22
  %29 = load i8, ptr %9, align 1, !tbaa !9
  %30 = sext i8 %29 to i32
  %31 = icmp eq i32 %30, 123
  br i1 %31, label %36, label %32

32:                                               ; preds = %28
  %33 = load i8, ptr %9, align 1, !tbaa !9
  %34 = sext i8 %33 to i32
  %35 = icmp eq i32 %34, 91
  br i1 %35, label %36, label %42

36:                                               ; preds = %32, %28, %22
  invoke void @_ZNSt5stackIcSt5dequeIcSaIcEEE4pushERKc(ptr noundef nonnull align 8 dereferenceable(80) %4, ptr noundef nonnull align 1 dereferenceable(1) %9)
          to label %37 unwind label %38

37:                                               ; preds = %36
  br label %82

38:                                               ; preds = %42, %36
  %39 = landingpad { ptr, i32 }
          cleanup
  %40 = extractvalue { ptr, i32 } %39, 0
  store ptr %40, ptr %10, align 8
  %41 = extractvalue { ptr, i32 } %39, 1
  store i32 %41, ptr %11, align 4
  br label %88

42:                                               ; preds = %32
  %43 = invoke noundef i64 @_ZNKSt5stackIcSt5dequeIcSaIcEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %4)
          to label %44 unwind label %38

44:                                               ; preds = %42
  %45 = icmp eq i64 %43, 0
  br i1 %45, label %46, label %47

46:                                               ; preds = %44
  store i1 false, ptr %2, align 1
  store i32 1, ptr %8, align 4
  br label %83

47:                                               ; preds = %44
  call void @llvm.lifetime.start.p0(i64 1, ptr %12) #4
  %48 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %4)
          to label %49 unwind label %76

49:                                               ; preds = %47
  %50 = load i8, ptr %48, align 1, !tbaa !9
  store i8 %50, ptr %12, align 1, !tbaa !9
  invoke void @_ZNSt5stackIcSt5dequeIcSaIcEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %4)
          to label %51 unwind label %76

51:                                               ; preds = %49
  %52 = load i8, ptr %9, align 1, !tbaa !9
  %53 = sext i8 %52 to i32
  %54 = icmp eq i32 %53, 41
  br i1 %54, label %55, label %59

55:                                               ; preds = %51
  %56 = load i8, ptr %12, align 1, !tbaa !9
  %57 = sext i8 %56 to i32
  %58 = icmp eq i32 %57, 40
  br i1 %58, label %75, label %59

59:                                               ; preds = %55, %51
  %60 = load i8, ptr %9, align 1, !tbaa !9
  %61 = sext i8 %60 to i32
  %62 = icmp eq i32 %61, 93
  br i1 %62, label %63, label %67

63:                                               ; preds = %59
  %64 = load i8, ptr %12, align 1, !tbaa !9
  %65 = sext i8 %64 to i32
  %66 = icmp eq i32 %65, 91
  br i1 %66, label %75, label %67

67:                                               ; preds = %63, %59
  %68 = load i8, ptr %9, align 1, !tbaa !9
  %69 = sext i8 %68 to i32
  %70 = icmp eq i32 %69, 125
  br i1 %70, label %71, label %80

71:                                               ; preds = %67
  %72 = load i8, ptr %12, align 1, !tbaa !9
  %73 = sext i8 %72 to i32
  %74 = icmp eq i32 %73, 123
  br i1 %74, label %75, label %80

75:                                               ; preds = %71, %63, %55
  store i32 3, ptr %8, align 4
  br label %81

76:                                               ; preds = %49, %47
  %77 = landingpad { ptr, i32 }
          cleanup
  %78 = extractvalue { ptr, i32 } %77, 0
  store ptr %78, ptr %10, align 8
  %79 = extractvalue { ptr, i32 } %77, 1
  store i32 %79, ptr %11, align 4
  call void @llvm.lifetime.end.p0(i64 1, ptr %12) #4
  br label %88

80:                                               ; preds = %71, %67
  store i1 false, ptr %2, align 1
  store i32 1, ptr %8, align 4
  br label %81

81:                                               ; preds = %80, %75
  call void @llvm.lifetime.end.p0(i64 1, ptr %12) #4
  br label %83

82:                                               ; preds = %37
  store i32 0, ptr %8, align 4
  br label %83

83:                                               ; preds = %82, %81, %46
  call void @llvm.lifetime.end.p0(i64 1, ptr %9) #4
  %84 = load i32, ptr %8, align 4
  switch i32 %84, label %89 [
    i32 0, label %85
    i32 3, label %86
  ]

85:                                               ; preds = %83
  br label %86

86:                                               ; preds = %85, %83
  %87 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #4
  br label %19

88:                                               ; preds = %76, %38
  call void @llvm.lifetime.end.p0(i64 1, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  br label %100

89:                                               ; preds = %83, %21
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  %90 = load i32, ptr %8, align 4
  switch i32 %90, label %98 [
    i32 2, label %91
  ]

91:                                               ; preds = %89
  %92 = invoke noundef zeroext i1 @_ZNKSt5stackIcSt5dequeIcSaIcEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %4)
          to label %93 unwind label %94

93:                                               ; preds = %91
  store i1 %92, ptr %2, align 1
  store i32 1, ptr %8, align 4
  br label %98

94:                                               ; preds = %91
  %95 = landingpad { ptr, i32 }
          cleanup
  %96 = extractvalue { ptr, i32 } %95, 0
  store ptr %96, ptr %10, align 8
  %97 = extractvalue { ptr, i32 } %95, 1
  store i32 %97, ptr %11, align 4
  br label %100

98:                                               ; preds = %93, %89
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %4) #4
  call void @llvm.lifetime.end.p0(i64 80, ptr %4) #4
  %99 = load i1, ptr %2, align 1
  ret i1 %99

100:                                              ; preds = %94, %88
  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 %101

101:                                              ; preds = %100
  %102 = load ptr, ptr %10, align 8
  %103 = load i32, ptr %11, align 4
  %104 = insertvalue { ptr, i32 } poison, ptr %102, 0
  %105 = insertvalue { ptr, i32 } %104, i32 %103, 1
  resume { ptr, i32 } %105
}

; Function Attrs: mustprogress nounwind uwtable
declare ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(32)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(32)) #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 1 dereferenceable(1) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

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

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = !{!7, !7, i64 0}


; 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 }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEEC2IS2_vEEv(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #1 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt5stackIcSt5dequeIcSaIcEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #2 align 2

; 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 #1 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) #0

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_Z7isValidNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef %0) local_unnamed_addr #1 personality ptr @__gxx_personality_v0 {
  %2 = alloca %"class.std::stack", align 8
  %3 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %4 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %5 = alloca i8, align 1
  call void @llvm.lifetime.start.p0(i64 80, ptr nonnull %2) #4
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEEC2IS2_vEEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  %6 = call ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  store ptr %6, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  %7 = call ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  store ptr %7, ptr %4, align 8
  %8 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #4
  br i1 %8, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1, %select.unfold
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %5) #4
  %9 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #4
  %10 = load i8, ptr %9, align 1, !tbaa !5
  store i8 %10, ptr %5, align 1, !tbaa !5
  switch i8 %10, label %14 [
    i8 123, label %11
    i8 91, label %11
    i8 40, label %11
  ]

11:                                               ; preds = %.lr.ph, %.lr.ph, %.lr.ph
  invoke void @_ZNSt5stackIcSt5dequeIcSaIcEEE4pushERKc(ptr noundef nonnull align 8 dereferenceable(80) %2, ptr noundef nonnull align 1 dereferenceable(1) %5)
          to label %select.unfold unwind label %12

12:                                               ; preds = %11
  %13 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  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 } %13

14:                                               ; preds = %.lr.ph
  %15 = call noundef i64 @_ZNKSt5stackIcSt5dequeIcSaIcEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  %16 = icmp eq i64 %15, 0
  br i1 %16, label %31, label %17

17:                                               ; preds = %14
  %18 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  %19 = load i8, ptr %18, align 1, !tbaa !5
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  %20 = load i8, ptr %5, align 1, !tbaa !5
  %21 = icmp eq i8 %20, 41
  %22 = icmp eq i8 %19, 40
  %or.cond8 = select i1 %21, i1 %22, i1 false
  br i1 %or.cond8, label %select.unfold, label %23

23:                                               ; preds = %17
  %24 = icmp eq i8 %20, 93
  %25 = icmp eq i8 %19, 91
  %or.cond11 = select i1 %24, i1 %25, i1 false
  br i1 %or.cond11, label %select.unfold, label %26

26:                                               ; preds = %23
  %27 = icmp eq i8 %20, 125
  %28 = icmp eq i8 %19, 123
  %or.cond14 = select i1 %27, i1 %28, i1 false
  br i1 %or.cond14, label %select.unfold, label %31

select.unfold:                                    ; preds = %26, %23, %17, %11
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5) #4
  %29 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #4
  %30 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #4
  br i1 %30, label %.lr.ph, label %._crit_edge

31:                                               ; preds = %14, %26
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  br label %33

._crit_edge:                                      ; preds = %select.unfold, %1
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  %32 = call noundef zeroext i1 @_ZNKSt5stackIcSt5dequeIcSaIcEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  br label %33

33:                                               ; preds = %31, %._crit_edge
  %.4 = phi i1 [ %32, %._crit_edge ], [ false, %31 ]
  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 %.4
}

; Function Attrs: mustprogress nounwind uwtable
declare ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 1 dereferenceable(1) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 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

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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"}


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