; LLVM IR from JanaSabuj/cppdump :: Old/BIGINTEGER/BIGADD.ll/Z6BIGADDRNSt7 (cxx1112basic_stringIcSt11char_traitsIcESaIcEEES5_)

; 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::__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.std::allocator" = type { i8 }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }

@.str = external hidden unnamed_addr constant [1 x i8], align 1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6BIGADDRNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES5_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8 %0, ptr noundef nonnull align 8 dereferenceable(32) %1, ptr noundef nonnull align 8 dereferenceable(32) %2) #0 personality ptr @__gxx_personality_v0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i1, align 1
  %11 = alloca %"class.std::allocator", align 1
  %12 = alloca ptr, align 8
  %13 = alloca i32, align 4
  %14 = alloca i32, align 4
  %15 = alloca i32, align 4
  %16 = alloca i32, align 4
  %17 = alloca i32, align 4
  %18 = alloca i32, align 4
  %19 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %20 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  store ptr %0, ptr %4, align 8
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %21) #5
  %23 = load ptr, ptr %6, align 8, !tbaa !5
  %24 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %23) #5
  %25 = icmp ugt i64 %22, %24
  br i1 %25, label %26, label %29

26:                                               ; preds = %3
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  call void @_ZSt4swapIcSt11char_traitsIcESaIcEEvRNSt7__cxx1112basic_stringIT_T0_T1_EES9_(ptr noundef nonnull align 8 dereferenceable(32) %27, ptr noundef nonnull align 8 dereferenceable(32) %28) #5
  br label %29

29:                                               ; preds = %26, %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  %30 = load ptr, ptr %5, align 8, !tbaa !5
  %31 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %30) #5
  %32 = trunc i64 %31 to i32
  store i32 %32, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  %33 = load ptr, ptr %6, align 8, !tbaa !5
  %34 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %33) #5
  %35 = trunc i64 %34 to i32
  store i32 %35, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #5
  %36 = load i32, ptr %8, align 4, !tbaa !9
  %37 = load i32, ptr %7, align 4, !tbaa !9
  %38 = sub nsw i32 %36, %37
  store i32 %38, ptr %9, align 4, !tbaa !9
  store i1 false, ptr %10, align 1
  call void @llvm.lifetime.start.p0(i64 1, ptr %11) #5
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %11) #5
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef @.str, ptr noundef nonnull align 1 dereferenceable(1) %11)
          to label %39 unwind label %46

39:                                               ; preds = %29
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %11) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %11) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #5
  store i32 0, ptr %14, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %15) #5
  %40 = load i32, ptr %7, align 4, !tbaa !9
  %41 = sub nsw i32 %40, 1
  store i32 %41, ptr %15, align 4, !tbaa !9
  br label %42

42:                                               ; preds = %80, %39
  %43 = load i32, ptr %15, align 4, !tbaa !9
  %44 = icmp sge i32 %43, 0
  br i1 %44, label %50, label %45

45:                                               ; preds = %42
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #5
  br label %87

46:                                               ; preds = %29
  %47 = landingpad { ptr, i32 }
          cleanup
  %48 = extractvalue { ptr, i32 } %47, 0
  store ptr %48, ptr %12, align 8
  %49 = extractvalue { ptr, i32 } %47, 1
  store i32 %49, ptr %13, align 4
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %11) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %11) #5
  br label %147

50:                                               ; preds = %42
  call void @llvm.lifetime.start.p0(i64 4, ptr %16) #5
  %51 = load ptr, ptr %5, align 8, !tbaa !5
  %52 = load i32, ptr %15, align 4, !tbaa !9
  %53 = sext i32 %52 to i64
  %54 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %51, i64 noundef %53)
          to label %55 unwind label %83

55:                                               ; preds = %50
  %56 = load i8, ptr %54, align 1, !tbaa !11
  %57 = sext i8 %56 to i32
  %58 = sub nsw i32 %57, 48
  %59 = load ptr, ptr %6, align 8, !tbaa !5
  %60 = load i32, ptr %15, align 4, !tbaa !9
  %61 = load i32, ptr %9, align 4, !tbaa !9
  %62 = add nsw i32 %60, %61
  %63 = sext i32 %62 to i64
  %64 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %59, i64 noundef %63)
          to label %65 unwind label %83

65:                                               ; preds = %55
  %66 = load i8, ptr %64, align 1, !tbaa !11
  %67 = sext i8 %66 to i32
  %68 = sub nsw i32 %67, 48
  %69 = add nsw i32 %58, %68
  %70 = load i32, ptr %14, align 4, !tbaa !9
  %71 = add nsw i32 %69, %70
  store i32 %71, ptr %16, align 4, !tbaa !9
  %72 = load i32, ptr %16, align 4, !tbaa !9
  %73 = srem i32 %72, 10
  %74 = add nsw i32 %73, 48
  %75 = trunc i32 %74 to i8
  %76 = invoke noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLEc(ptr noundef nonnull align 8 dereferenceable(32) %0, i8 noundef signext %75)
          to label %77 unwind label %83

77:                                               ; preds = %65
  %78 = load i32, ptr %16, align 4, !tbaa !9
  %79 = sdiv i32 %78, 10
  store i32 %79, ptr %14, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %16) #5
  br label %80

80:                                               ; preds = %77
  %81 = load i32, ptr %15, align 4, !tbaa !9
  %82 = add nsw i32 %81, -1
  store i32 %82, ptr %15, align 4, !tbaa !9
  br label %42, !llvm.loop !12

83:                                               ; preds = %65, %55, %50
  %84 = landingpad { ptr, i32 }
          cleanup
  %85 = extractvalue { ptr, i32 } %84, 0
  store ptr %85, ptr %12, align 8
  %86 = extractvalue { ptr, i32 } %84, 1
  store i32 %86, ptr %13, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %16) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #5
  br label %144

87:                                               ; preds = %45
  call void @llvm.lifetime.start.p0(i64 4, ptr %17) #5
  %88 = load i32, ptr %8, align 4, !tbaa !9
  %89 = load i32, ptr %7, align 4, !tbaa !9
  %90 = sub nsw i32 %88, %89
  %91 = sub nsw i32 %90, 1
  store i32 %91, ptr %17, align 4, !tbaa !9
  br label %92

92:                                               ; preds = %114, %87
  %93 = load i32, ptr %17, align 4, !tbaa !9
  %94 = icmp sge i32 %93, 0
  br i1 %94, label %96, label %95

95:                                               ; preds = %92
  call void @llvm.lifetime.end.p0(i64 4, ptr %17) #5
  br label %121

96:                                               ; preds = %92
  call void @llvm.lifetime.start.p0(i64 4, ptr %18) #5
  %97 = load ptr, ptr %6, align 8, !tbaa !5
  %98 = load i32, ptr %17, align 4, !tbaa !9
  %99 = sext i32 %98 to i64
  %100 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %97, i64 noundef %99)
          to label %101 unwind label %117

101:                                              ; preds = %96
  %102 = load i8, ptr %100, align 1, !tbaa !11
  %103 = sext i8 %102 to i32
  %104 = sub nsw i32 %103, 48
  %105 = load i32, ptr %14, align 4, !tbaa !9
  %106 = add nsw i32 %104, %105
  store i32 %106, ptr %18, align 4, !tbaa !9
  %107 = load i32, ptr %18, align 4, !tbaa !9
  %108 = srem i32 %107, 10
  %109 = add nsw i32 %108, 48
  %110 = trunc i32 %109 to i8
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE9push_backEc(ptr noundef nonnull align 8 dereferenceable(32) %0, i8 noundef signext %110)
          to label %111 unwind label %117

111:                                              ; preds = %101
  %112 = load i32, ptr %18, align 4, !tbaa !9
  %113 = sdiv i32 %112, 10
  store i32 %113, ptr %14, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %18) #5
  br label %114

114:                                              ; preds = %111
  %115 = load i32, ptr %17, align 4, !tbaa !9
  %116 = add nsw i32 %115, -1
  store i32 %116, ptr %17, align 4, !tbaa !9
  br label %92, !llvm.loop !14

117:                                              ; preds = %101, %96
  %118 = landingpad { ptr, i32 }
          cleanup
  %119 = extractvalue { ptr, i32 } %118, 0
  store ptr %119, ptr %12, align 8
  %120 = extractvalue { ptr, i32 } %118, 1
  store i32 %120, ptr %13, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %18) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %17) #5
  br label %144

121:                                              ; preds = %95
  %122 = load i32, ptr %14, align 4, !tbaa !9
  %123 = icmp ne i32 %122, 0
  br i1 %123, label %124, label %133

124:                                              ; preds = %121
  %125 = load i32, ptr %14, align 4, !tbaa !9
  %126 = add nsw i32 %125, 48
  %127 = trunc i32 %126 to i8
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE9push_backEc(ptr noundef nonnull align 8 dereferenceable(32) %0, i8 noundef signext %127)
          to label %128 unwind label %129

128:                                              ; preds = %124
  br label %133

129:                                              ; preds = %133, %124
  %130 = landingpad { ptr, i32 }
          cleanup
  %131 = extractvalue { ptr, i32 } %130, 0
  store ptr %131, ptr %12, align 8
  %132 = extractvalue { ptr, i32 } %130, 1
  store i32 %132, ptr %13, align 4
  br label %144

133:                                              ; preds = %128, %121
  %134 = call ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #5
  %135 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %19, i32 0, i32 0
  store ptr %134, ptr %135, align 8
  %136 = call ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #5
  %137 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %20, i32 0, i32 0
  store ptr %136, ptr %137, align 8
  %138 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %19, i32 0, i32 0
  %139 = load ptr, ptr %138, align 8
  %140 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %20, i32 0, i32 0
  %141 = load ptr, ptr %140, align 8
  invoke void @_ZSt7reverseIN9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEEvT_SA_(ptr %139, ptr %141)
          to label %142 unwind label %129

142:                                              ; preds = %133
  store i1 true, ptr %10, align 1
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #5
  %143 = load i1, ptr %10, align 1
  br i1 %143, label %146, label %145

144:                                              ; preds = %129, %117, %83
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %0) #5
  br label %147

145:                                              ; preds = %142
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %0) #5
  br label %146

146:                                              ; preds = %145, %142
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  ret void

147:                                              ; preds = %144, %46
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  br label %148

148:                                              ; preds = %147
  %149 = load ptr, ptr %12, align 8
  %150 = load i32, ptr %13, align 4
  %151 = insertvalue { ptr, i32 } poison, ptr %149, 0
  %152 = insertvalue { ptr, i32 } %151, i32 %150, 1
  resume { ptr, i32 } %152
}

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32)) #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZSt4swapIcSt11char_traitsIcESaIcEEvRNSt7__cxx1112basic_stringIT_T0_T1_EES9_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 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) #3

; 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) #1 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLEc(ptr noundef nonnull align 8 dereferenceable(32), i8 noundef signext) #0 align 2

; Function Attrs: mustprogress uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE9push_backEc(ptr noundef nonnull align 8 dereferenceable(32), i8 noundef signext) #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt7reverseIN9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEEvT_SA_(ptr, ptr) #4

; Function Attrs: mustprogress nounwind uwtable
declare ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(32)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(32)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 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 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 #2 = { 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 #3 = { nocallback nofree nosync 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 = { 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"}
!14 = distinct !{!14, !13}


; 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::__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.std::allocator" = type { i8 }

@.str = external hidden unnamed_addr constant [1 x i8], align 1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6BIGADDRNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES5_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8 %0, ptr noundef nonnull align 8 dereferenceable(32) %1, ptr noundef nonnull align 8 dereferenceable(32) %2) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %4 = alloca %"class.std::allocator", align 1
  %5 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %1) #5
  %6 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %2) #5
  %7 = icmp ugt i64 %5, %6
  br i1 %7, label %8, label %9

8:                                                ; preds = %3
  tail call void @_ZSt4swapIcSt11char_traitsIcESaIcEEvRNSt7__cxx1112basic_stringIT_T0_T1_EES9_(ptr noundef nonnull align 8 dereferenceable(32) %1, ptr noundef nonnull align 8 dereferenceable(32) %2) #5
  br label %9

9:                                                ; preds = %8, %3
  %10 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %1) #5
  %11 = trunc i64 %10 to i32
  %12 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %2) #5
  %13 = trunc i64 %12 to i32
  %14 = sub i32 %13, %11
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %4) #5
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #5
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull @.str, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %15 unwind label %21

15:                                               ; preds = %9
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #5
  %16 = icmp sgt i32 %11, 0
  br i1 %16, label %.lr.ph.preheader, label %.preheader

.lr.ph.preheader:                                 ; preds = %15
  %17 = and i64 %10, 2147483647
  %18 = sext i32 %14 to i64
  br label %.lr.ph

.preheader:                                       ; preds = %38, %15
  %.036.lcssa = phi i32 [ 0, %15 ], [ %34, %38 ]
  %19 = icmp sgt i32 %14, 0
  br i1 %19, label %.lr.ph49.preheader, label %._crit_edge

.lr.ph49.preheader:                               ; preds = %.preheader
  %20 = zext nneg i32 %14 to i64
  br label %.lr.ph49

21:                                               ; preds = %9
  %22 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #5
  br label %67

.lr.ph:                                           ; preds = %.lr.ph.preheader, %38
  %indvars.iv = phi i64 [ %17, %.lr.ph.preheader ], [ %indvars.iv.next, %38 ]
  %.03644 = phi i32 [ 0, %.lr.ph.preheader ], [ %34, %38 ]
  %indvars.iv.next = add nsw i64 %indvars.iv, -1
  %23 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %1, i64 noundef %indvars.iv.next)
  %24 = load i8, ptr %23, align 1, !tbaa !5
  %25 = sext i8 %24 to i32
  %26 = add nsw i64 %indvars.iv.next, %18
  %27 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef %26)
  %28 = load i8, ptr %27, align 1, !tbaa !5
  %29 = sext i8 %28 to i32
  %30 = add nsw i32 %.03644, -96
  %31 = add nsw i32 %30, %25
  %32 = add nsw i32 %31, %29
  %33 = srem i32 %32, 10
  %34 = sdiv i32 %32, 10
  %35 = trunc nsw i32 %33 to i8
  %36 = add nsw i8 %35, 48
  %37 = invoke noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLEc(ptr noundef nonnull align 8 dereferenceable(32) %0, i8 noundef signext %36)
          to label %38 unwind label %40

38:                                               ; preds = %.lr.ph
  %39 = icmp ugt i64 %indvars.iv, 1
  br i1 %39, label %.lr.ph, label %.preheader, !llvm.loop !8

40:                                               ; preds = %.lr.ph
  %41 = landingpad { ptr, i32 }
          cleanup
  br label %65

._crit_edge:                                      ; preds = %52, %.preheader
  %.137.lcssa = phi i32 [ %.036.lcssa, %.preheader ], [ %49, %52 ]
  %.not = icmp eq i32 %.137.lcssa, 0
  br i1 %.not, label %62, label %57

.lr.ph49:                                         ; preds = %.lr.ph49.preheader, %52
  %indvars.iv53 = phi i64 [ %20, %.lr.ph49.preheader ], [ %indvars.iv.next54, %52 ]
  %.13747 = phi i32 [ %.036.lcssa, %.lr.ph49.preheader ], [ %49, %52 ]
  %indvars.iv.next54 = add nsw i64 %indvars.iv53, -1
  %42 = and i64 %indvars.iv.next54, 4294967295
  %43 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef %42)
  %44 = load i8, ptr %43, align 1, !tbaa !5
  %45 = sext i8 %44 to i32
  %46 = add nsw i32 %.13747, -48
  %47 = add nsw i32 %46, %45
  %48 = srem i32 %47, 10
  %49 = sdiv i32 %47, 10
  %50 = trunc nsw i32 %48 to i8
  %51 = add nsw i8 %50, 48
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE9push_backEc(ptr noundef nonnull align 8 dereferenceable(32) %0, i8 noundef signext %51)
          to label %52 unwind label %55

52:                                               ; preds = %.lr.ph49
  %53 = trunc nuw i64 %indvars.iv53 to i32
  %54 = icmp sgt i32 %53, 1
  br i1 %54, label %.lr.ph49, label %._crit_edge, !llvm.loop !10

55:                                               ; preds = %.lr.ph49
  %56 = landingpad { ptr, i32 }
          cleanup
  br label %65

57:                                               ; preds = %._crit_edge
  %58 = trunc i32 %.137.lcssa to i8
  %59 = add i8 %58, 48
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE9push_backEc(ptr noundef nonnull align 8 dereferenceable(32) %0, i8 noundef signext %59)
          to label %62 unwind label %60

60:                                               ; preds = %62, %57
  %61 = landingpad { ptr, i32 }
          cleanup
  br label %65

62:                                               ; preds = %57, %._crit_edge
  %63 = call ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #5
  %64 = call ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #5
  invoke void @_ZSt7reverseIN9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEEvT_SA_(ptr %63, ptr %64)
          to label %66 unwind label %60

65:                                               ; preds = %60, %55, %40
  %.pn = phi { ptr, i32 } [ %41, %40 ], [ %56, %55 ], [ %61, %60 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %0) #5
  br label %67

66:                                               ; preds = %62
  ret void

67:                                               ; preds = %65, %21
  %.pn.pn = phi { ptr, i32 } [ %.pn, %65 ], [ %22, %21 ]
  resume { ptr, i32 } %.pn.pn
}

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZSt4swapIcSt11char_traitsIcESaIcEEvRNSt7__cxx1112basic_stringIT_T0_T1_EES9_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 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) #3

; 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 #1 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLEc(ptr noundef nonnull align 8 dereferenceable(32), i8 noundef signext) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE9push_backEc(ptr noundef nonnull align 8 dereferenceable(32), i8 noundef signext) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt7reverseIN9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEEvT_SA_(ptr, ptr) local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 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 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 #2 = { 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 #3 = { mustprogress nocallback nofree nosync 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 = { 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"}
!10 = distinct !{!10, !9}


; Effective O3 passes: CorrelatedValuePropagationPass,DivRemPairsPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass