; LLVM IR from ritikbanger/Hacktoberfest2022-DSA :: 09. String (Maximum_Length_with_unique_characters)

; 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::map" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<char, std::pair<const char, int>, std::_Select1st<std::pair<const char, int>>, std::less<char>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<char, std::pair<const char, int>, std::_Select1st<std::pair<const char, int>>, std::less<char>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::_Rb_tree_header" = type { %"struct.std::_Rb_tree_node_base", i64 }
%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%"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] }

@ck = external dso_local global %"class.std::map", align 8
@su = external dso_local global i32, align 4

; Function Attrs: mustprogress uwtable
define dso_local void @_Z9maxLengthPNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEii(ptr noundef %0, i32 noundef %1, i32 noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i8, align 1
  %11 = alloca i8, align 1
  %12 = alloca i32, align 4
  %13 = alloca ptr, align 8
  %14 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %15 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %16 = alloca i8, align 1
  %17 = alloca ptr, align 8
  %18 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %19 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %20 = alloca i8, align 1
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store i32 %2, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store i32 0, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  store i32 97, ptr %8, align 4, !tbaa !9
  br label %21

21:                                               ; preds = %43, %3
  %22 = load i32, ptr %8, align 4, !tbaa !9
  %23 = icmp sle i32 %22, 122
  br i1 %23, label %25, label %24

24:                                               ; preds = %21
  store i32 2, ptr %9, align 4
  br label %46

25:                                               ; preds = %21
  call void @llvm.lifetime.start.p0(i64 1, ptr %10) #4
  %26 = load i32, ptr %8, align 4, !tbaa !9
  %27 = trunc i32 %26 to i8
  store i8 %27, ptr %10, align 1, !tbaa !11
  %28 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIciSt4lessIcESaISt4pairIKciEEEixEOc(ptr noundef nonnull align 8 dereferenceable(48) @ck, ptr noundef nonnull align 1 dereferenceable(1) %10)
  %29 = load i32, ptr %28, align 4, !tbaa !9
  %30 = icmp sgt i32 %29, 1
  call void @llvm.lifetime.end.p0(i64 1, ptr %10) #4
  br i1 %30, label %31, label %32

31:                                               ; preds = %25
  store i32 1, ptr %9, align 4
  br label %46

32:                                               ; preds = %25
  call void @llvm.lifetime.start.p0(i64 1, ptr %11) #4
  %33 = load i32, ptr %8, align 4, !tbaa !9
  %34 = trunc i32 %33 to i8
  store i8 %34, ptr %11, align 1, !tbaa !11
  %35 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIciSt4lessIcESaISt4pairIKciEEEixEOc(ptr noundef nonnull align 8 dereferenceable(48) @ck, ptr noundef nonnull align 1 dereferenceable(1) %11)
  %36 = load i32, ptr %35, align 4, !tbaa !9
  %37 = icmp eq i32 %36, 1
  call void @llvm.lifetime.end.p0(i64 1, ptr %11) #4
  br i1 %37, label %38, label %41

38:                                               ; preds = %32
  %39 = load i32, ptr %7, align 4, !tbaa !9
  %40 = add nsw i32 %39, 1
  store i32 %40, ptr %7, align 4, !tbaa !9
  br label %41

41:                                               ; preds = %38, %32
  br label %42

42:                                               ; preds = %41
  br label %43

43:                                               ; preds = %42
  %44 = load i32, ptr %8, align 4, !tbaa !9
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %8, align 4, !tbaa !9
  br label %21, !llvm.loop !12

46:                                               ; preds = %31, %24
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  %47 = load i32, ptr %9, align 4
  switch i32 %47, label %110 [
    i32 2, label %48
  ]

48:                                               ; preds = %46
  %49 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %7, ptr noundef nonnull align 4 dereferenceable(4) @su)
  %50 = load i32, ptr %49, align 4, !tbaa !9
  store i32 %50, ptr @su, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #4
  %51 = load i32, ptr %5, align 4, !tbaa !9
  store i32 %51, ptr %12, align 4, !tbaa !9
  br label %52

52:                                               ; preds = %106, %48
  %53 = load i32, ptr %12, align 4, !tbaa !9
  %54 = load i32, ptr %6, align 4, !tbaa !9
  %55 = icmp slt i32 %53, %54
  br i1 %55, label %57, label %56

56:                                               ; preds = %52
  store i32 5, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  br label %109

57:                                               ; preds = %52
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #4
  %58 = load ptr, ptr %4, align 8, !tbaa !5
  %59 = load i32, ptr %12, align 4, !tbaa !9
  %60 = sext i32 %59 to i64
  %61 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %58, i64 %60
  store ptr %61, ptr %13, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %14) #4
  %62 = load ptr, ptr %13, align 8, !tbaa !5
  %63 = call ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(32) %62) #4
  %64 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %14, i32 0, i32 0
  store ptr %63, ptr %64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %15) #4
  %65 = load ptr, ptr %13, align 8, !tbaa !5
  %66 = call ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(32) %65) #4
  %67 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %15, i32 0, i32 0
  store ptr %66, ptr %67, align 8
  br label %68

68:                                               ; preds = %77, %57
  %69 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8) %14, ptr noundef nonnull align 8 dereferenceable(8) %15) #4
  br i1 %69, label %71, label %70

70:                                               ; preds = %68
  store i32 8, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %15) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %14) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #4
  br label %79

71:                                               ; preds = %68
  call void @llvm.lifetime.start.p0(i64 1, ptr %16) #4
  %72 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %14) #4
  %73 = load i8, ptr %72, align 1, !tbaa !11
  store i8 %73, ptr %16, align 1, !tbaa !11
  %74 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIciSt4lessIcESaISt4pairIKciEEEixERS3_(ptr noundef nonnull align 8 dereferenceable(48) @ck, ptr noundef nonnull align 1 dereferenceable(1) %16)
  %75 = load i32, ptr %74, align 4, !tbaa !9
  %76 = add nsw i32 %75, 1
  store i32 %76, ptr %74, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 1, ptr %16) #4
  br label %77

77:                                               ; preds = %71
  %78 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %14) #4
  br label %68

79:                                               ; preds = %70
  %80 = load ptr, ptr %4, align 8, !tbaa !5
  %81 = load i32, ptr %12, align 4, !tbaa !9
  %82 = add nsw i32 %81, 1
  %83 = load i32, ptr %6, align 4, !tbaa !9
  call void @_Z9maxLengthPNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEii(ptr noundef %80, i32 noundef %82, i32 noundef %83)
  call void @llvm.lifetime.start.p0(i64 8, ptr %17) #4
  %84 = load ptr, ptr %4, align 8, !tbaa !5
  %85 = load i32, ptr %12, align 4, !tbaa !9
  %86 = sext i32 %85 to i64
  %87 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %84, i64 %86
  store ptr %87, ptr %17, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %18) #4
  %88 = load ptr, ptr %17, align 8, !tbaa !5
  %89 = call ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(32) %88) #4
  %90 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %18, i32 0, i32 0
  store ptr %89, ptr %90, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %19) #4
  %91 = load ptr, ptr %17, align 8, !tbaa !5
  %92 = call ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(32) %91) #4
  %93 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %19, i32 0, i32 0
  store ptr %92, ptr %93, align 8
  br label %94

94:                                               ; preds = %103, %79
  %95 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8) %18, ptr noundef nonnull align 8 dereferenceable(8) %19) #4
  br i1 %95, label %97, label %96

96:                                               ; preds = %94
  store i32 10, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %19) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %18) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %17) #4
  br label %105

97:                                               ; preds = %94
  call void @llvm.lifetime.start.p0(i64 1, ptr %20) #4
  %98 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %18) #4
  %99 = load i8, ptr %98, align 1, !tbaa !11
  store i8 %99, ptr %20, align 1, !tbaa !11
  %100 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIciSt4lessIcESaISt4pairIKciEEEixERS3_(ptr noundef nonnull align 8 dereferenceable(48) @ck, ptr noundef nonnull align 1 dereferenceable(1) %20)
  %101 = load i32, ptr %100, align 4, !tbaa !9
  %102 = add nsw i32 %101, -1
  store i32 %102, ptr %100, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 1, ptr %20) #4
  br label %103

103:                                              ; preds = %97
  %104 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %18) #4
  br label %94

105:                                              ; preds = %96
  br label %106

106:                                              ; preds = %105
  %107 = load i32, ptr %12, align 4, !tbaa !9
  %108 = add nsw i32 %107, 1
  store i32 %108, ptr %12, align 4, !tbaa !9
  br label %52, !llvm.loop !14

109:                                              ; preds = %56
  store i32 0, ptr %9, align 4
  br label %110

110:                                              ; preds = %109, %46
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  %111 = load i32, ptr %9, align 4
  switch i32 %111, label %113 [
    i32 0, label %112
    i32 1, label %112
  ]

112:                                              ; preds = %110, %110
  ret void

113:                                              ; preds = %110
  unreachable
}

; 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 noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIciSt4lessIcESaISt4pairIKciEEEixEOc(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 1 dereferenceable(1)) #0 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 noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #2

; Function Attrs: mustprogress nounwind uwtable
declare ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(32)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(32)) #3 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)) #2

; 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)) #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIciSt4lessIcESaISt4pairIKciEEEixERS3_(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 1 dereferenceable(1)) #0 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)) #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 = { 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 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"}
!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::map" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<char, std::pair<const char, int>, std::_Select1st<std::pair<const char, int>>, std::less<char>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<char, std::pair<const char, int>, std::_Select1st<std::pair<const char, int>>, std::less<char>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::_Rb_tree_header" = type { %"struct.std::_Rb_tree_node_base", i64 }
%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%"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] }

@ck = external dso_local global %"class.std::map", align 8
@su = external dso_local global i32, align 4

; Function Attrs: mustprogress uwtable
define dso_local void @_Z9maxLengthPNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEii(ptr noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = alloca i32, align 4
  %5 = alloca i8, align 1
  %6 = alloca i8, align 1
  %7 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %8 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %9 = alloca i8, align 1
  %10 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %11 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %12 = alloca i8, align 1
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #4
  store i32 0, ptr %4, align 4, !tbaa !5
  br label %13

13:                                               ; preds = %3, %25
  %14 = phi i32 [ 0, %3 ], [ %26, %25 ]
  %.023 = phi i32 [ 97, %3 ], [ %27, %25 ]
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %5) #4
  %15 = trunc nuw i32 %.023 to i8
  store i8 %15, ptr %5, align 1, !tbaa !9
  %16 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIciSt4lessIcESaISt4pairIKciEEEixEOc(ptr noundef nonnull align 8 dereferenceable(48) @ck, ptr noundef nonnull align 1 dereferenceable(1) %5)
  %17 = load i32, ptr %16, align 4, !tbaa !5
  %18 = icmp sgt i32 %17, 1
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5) #4
  br i1 %18, label %.loopexit, label %19

19:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %6) #4
  store i8 %15, ptr %6, align 1, !tbaa !9
  %20 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIciSt4lessIcESaISt4pairIKciEEEixEOc(ptr noundef nonnull align 8 dereferenceable(48) @ck, ptr noundef nonnull align 1 dereferenceable(1) %6)
  %21 = load i32, ptr %20, align 4, !tbaa !5
  %22 = icmp eq i32 %21, 1
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %6) #4
  br i1 %22, label %23, label %25

23:                                               ; preds = %19
  %24 = add nsw i32 %14, 1
  store i32 %24, ptr %4, align 4, !tbaa !5
  br label %25

25:                                               ; preds = %23, %19
  %26 = phi i32 [ %24, %23 ], [ %14, %19 ]
  %27 = add nuw nsw i32 %.023, 1
  %exitcond = icmp eq i32 %27, 123
  br i1 %exitcond, label %.critedge, label %13, !llvm.loop !10

.critedge:                                        ; preds = %25
  %28 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %4, ptr noundef nonnull align 4 dereferenceable(4) @su)
  %29 = load i32, ptr %28, align 4, !tbaa !5
  store i32 %29, ptr @su, align 4, !tbaa !5
  %30 = icmp slt i32 %1, %2
  br i1 %30, label %.lr.ph28.preheader, label %.loopexit

.lr.ph28.preheader:                               ; preds = %.critedge
  %31 = sext i32 %1 to i64
  br label %.lr.ph28

.lr.ph28:                                         ; preds = %.lr.ph28.preheader, %._crit_edge26
  %indvars.iv = phi i64 [ %31, %.lr.ph28.preheader ], [ %indvars.iv.next, %._crit_edge26 ]
  %32 = getelementptr inbounds %"class.std::__cxx11::basic_string", ptr %0, i64 %indvars.iv
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %7) #4
  %33 = call ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(32) %32) #4
  store ptr %33, ptr %7, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %8) #4
  %34 = call ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(32) %32) #4
  store ptr %34, ptr %8, align 8
  %35 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8) %7, ptr noundef nonnull align 8 dereferenceable(8) %8) #4
  br i1 %35, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %.lr.ph28
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %8) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %7) #4
  %indvars.iv.next = add nsw i64 %indvars.iv, 1
  %36 = trunc i64 %indvars.iv.next to i32
  call void @_Z9maxLengthPNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEii(ptr noundef %0, i32 noundef %36, i32 noundef %2)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %10) #4
  %37 = call ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(32) %32) #4
  store ptr %37, ptr %10, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %11) #4
  %38 = call ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(32) %32) #4
  store ptr %38, ptr %11, align 8
  %39 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8) %10, ptr noundef nonnull align 8 dereferenceable(8) %11) #4
  br i1 %39, label %.lr.ph25, label %._crit_edge26

.lr.ph:                                           ; preds = %.lr.ph28, %.lr.ph
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %9) #4
  %40 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %7) #4
  %41 = load i8, ptr %40, align 1, !tbaa !9
  store i8 %41, ptr %9, align 1, !tbaa !9
  %42 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIciSt4lessIcESaISt4pairIKciEEEixERS3_(ptr noundef nonnull align 8 dereferenceable(48) @ck, ptr noundef nonnull align 1 dereferenceable(1) %9)
  %43 = load i32, ptr %42, align 4, !tbaa !5
  %44 = add nsw i32 %43, 1
  store i32 %44, ptr %42, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %9) #4
  %45 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %7) #4
  %46 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8) %7, ptr noundef nonnull align 8 dereferenceable(8) %8) #4
  br i1 %46, label %.lr.ph, label %._crit_edge

._crit_edge26:                                    ; preds = %.lr.ph25, %._crit_edge
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %11) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %10) #4
  %exitcond31.not = icmp eq i32 %36, %2
  br i1 %exitcond31.not, label %.loopexit, label %.lr.ph28, !llvm.loop !12

.lr.ph25:                                         ; preds = %._crit_edge, %.lr.ph25
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %12) #4
  %47 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %10) #4
  %48 = load i8, ptr %47, align 1, !tbaa !9
  store i8 %48, ptr %12, align 1, !tbaa !9
  %49 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIciSt4lessIcESaISt4pairIKciEEEixERS3_(ptr noundef nonnull align 8 dereferenceable(48) @ck, ptr noundef nonnull align 1 dereferenceable(1) %12)
  %50 = load i32, ptr %49, align 4, !tbaa !5
  %51 = add nsw i32 %50, -1
  store i32 %51, ptr %49, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %12) #4
  %52 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %10) #4
  %53 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEbRKNS_17__normal_iteratorIT_T0_EESD_(ptr noundef nonnull align 8 dereferenceable(8) %10, ptr noundef nonnull align 8 dereferenceable(8) %11) #4
  br i1 %53, label %.lr.ph25, label %._crit_edge26

.loopexit:                                        ; preds = %13, %._crit_edge26, %.critedge
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #4
  ret void
}

; 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 noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIciSt4lessIcESaISt4pairIKciEEEixEOc(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 1 dereferenceable(1)) local_unnamed_addr #0 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 noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #3 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 #2

; 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 #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt3mapIciSt4lessIcESaISt4pairIKciEEEixERS3_(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 1 dereferenceable(1)) local_unnamed_addr #0 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 #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 = { 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 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}
!12 = distinct !{!12, !11}


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