; LLVM IR from smv1999/CompetitiveProgrammingQuestionBank :: Strings (Longest_Substring_with_AtLeast_K_Repeating_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::unordered_map" = type { %"class.std::_Hashtable" }
%"class.std::_Hashtable" = type { ptr, i64, %"struct.std::__detail::_Hash_node_base", i64, %"struct.std::__detail::_Prime_rehash_policy", ptr }
%"struct.std::__detail::_Hash_node_base" = type { ptr }
%"struct.std::__detail::_Prime_rehash_policy" = type { float, i64 }
%"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] }

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z16longestSubstringNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEi(ptr noundef %0, i32 noundef %1) #0 personality ptr @__gxx_personality_v0 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca %"class.std::unordered_map", align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  %14 = alloca i32, align 4
  %15 = alloca i32, align 4
  %16 = alloca %"class.std::__cxx11::basic_string", align 8
  %17 = alloca i32, align 4
  %18 = alloca %"class.std::__cxx11::basic_string", align 8
  %19 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 56, ptr %6) #4
  call void @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEEC2Ev(ptr noundef nonnull align 8 dereferenceable(56) %6) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %20

20:                                               ; preds = %37, %2
  %21 = load i32, ptr %7, align 4, !tbaa !9
  %22 = sext i32 %21 to i64
  %23 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %24 = icmp ult i64 %22, %23
  br i1 %24, label %26, label %25

25:                                               ; preds = %20
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  br label %44

26:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  %27 = load i32, ptr %7, align 4, !tbaa !9
  %28 = sext i32 %27 to i64
  %29 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %28)
          to label %30 unwind label %40

30:                                               ; preds = %26
  %31 = load i8, ptr %29, align 1, !tbaa !11
  %32 = sext i8 %31 to i32
  store i32 %32, ptr %8, align 4, !tbaa !9
  %33 = invoke noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEEixEOi(ptr noundef nonnull align 8 dereferenceable(56) %6, ptr noundef nonnull align 4 dereferenceable(4) %8)
          to label %34 unwind label %40

34:                                               ; preds = %30
  %35 = load i32, ptr %33, align 4, !tbaa !9
  %36 = add nsw i32 %35, 1
  store i32 %36, ptr %33, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  br label %37

37:                                               ; preds = %34
  %38 = load i32, ptr %7, align 4, !tbaa !9
  %39 = add nsw i32 %38, 1
  store i32 %39, ptr %7, align 4, !tbaa !9
  br label %20, !llvm.loop !12

40:                                               ; preds = %30, %26
  %41 = landingpad { ptr, i32 }
          cleanup
  %42 = extractvalue { ptr, i32 } %41, 0
  store ptr %42, ptr %9, align 8
  %43 = extractvalue { ptr, i32 } %41, 1
  store i32 %43, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  br label %163

44:                                               ; preds = %25
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #4
  store i32 0, ptr %11, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #4
  %45 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %46 = trunc i64 %45 to i32
  store i32 %46, ptr %12, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #4
  store i32 0, ptr %13, align 4, !tbaa !9
  br label %47

47:                                               ; preds = %66, %44
  %48 = load i32, ptr %11, align 4, !tbaa !9
  %49 = sext i32 %48 to i64
  %50 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %51 = icmp ult i64 %49, %50
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #4
  br i1 %51, label %52, label %64

52:                                               ; preds = %47
  %53 = load i32, ptr %5, align 4, !tbaa !9
  %54 = load i32, ptr %11, align 4, !tbaa !9
  %55 = sext i32 %54 to i64
  %56 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %55)
          to label %57 unwind label %69

57:                                               ; preds = %52
  %58 = load i8, ptr %56, align 1, !tbaa !11
  %59 = sext i8 %58 to i32
  store i32 %59, ptr %14, align 4, !tbaa !9
  %60 = invoke noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEEixEOi(ptr noundef nonnull align 8 dereferenceable(56) %6, ptr noundef nonnull align 4 dereferenceable(4) %14)
          to label %61 unwind label %69

61:                                               ; preds = %57
  %62 = load i32, ptr %60, align 4, !tbaa !9
  %63 = icmp sle i32 %53, %62
  br label %64

64:                                               ; preds = %61, %47
  %65 = phi i1 [ false, %47 ], [ %63, %61 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #4
  br i1 %65, label %66, label %73

66:                                               ; preds = %64
  %67 = load i32, ptr %11, align 4, !tbaa !9
  %68 = add nsw i32 %67, 1
  store i32 %68, ptr %11, align 4, !tbaa !9
  br label %47, !llvm.loop !14

69:                                               ; preds = %57, %52
  %70 = landingpad { ptr, i32 }
          cleanup
  %71 = extractvalue { ptr, i32 } %70, 0
  store ptr %71, ptr %9, align 8
  %72 = extractvalue { ptr, i32 } %70, 1
  store i32 %72, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #4
  br label %162

73:                                               ; preds = %64
  %74 = load i32, ptr %11, align 4, !tbaa !9
  %75 = sext i32 %74 to i64
  %76 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %77 = icmp eq i64 %75, %76
  br i1 %77, label %78, label %81

78:                                               ; preds = %73
  %79 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %80 = trunc i64 %79 to i32
  store i32 %80, ptr %3, align 4
  store i32 1, ptr %15, align 4
  br label %160

81:                                               ; preds = %73
  %82 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %83 = icmp eq i64 %82, 0
  br i1 %83, label %84, label %85

84:                                               ; preds = %81
  store i32 0, ptr %3, align 4
  store i32 1, ptr %15, align 4
  br label %160

85:                                               ; preds = %81
  %86 = load i32, ptr %11, align 4, !tbaa !9
  %87 = sext i32 %86 to i64
  %88 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %89 = icmp ult i64 %87, %88
  br i1 %89, label %90, label %105

90:                                               ; preds = %85
  %91 = load i32, ptr %11, align 4, !tbaa !9
  %92 = sext i32 %91 to i64
  invoke void @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6substrEmm(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %16, ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef 0, i64 noundef %92)
          to label %93 unwind label %97

93:                                               ; preds = %90
  %94 = load i32, ptr %5, align 4, !tbaa !9
  %95 = invoke noundef i32 @_Z16longestSubstringNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEi(ptr noundef %16, i32 noundef %94)
          to label %96 unwind label %101

96:                                               ; preds = %93
  store i32 %95, ptr %12, align 4, !tbaa !9
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %16) #4
  br label %105

97:                                               ; preds = %139, %90
  %98 = landingpad { ptr, i32 }
          cleanup
  %99 = extractvalue { ptr, i32 } %98, 0
  store ptr %99, ptr %9, align 8
  %100 = extractvalue { ptr, i32 } %98, 1
  store i32 %100, ptr %10, align 4
  br label %162

101:                                              ; preds = %93
  %102 = landingpad { ptr, i32 }
          cleanup
  %103 = extractvalue { ptr, i32 } %102, 0
  store ptr %103, ptr %9, align 8
  %104 = extractvalue { ptr, i32 } %102, 1
  store i32 %104, ptr %10, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %16) #4
  br label %162

105:                                              ; preds = %96, %85
  br label %106

106:                                              ; preds = %125, %105
  %107 = load i32, ptr %11, align 4, !tbaa !9
  %108 = sext i32 %107 to i64
  %109 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %110 = icmp ult i64 %108, %109
  call void @llvm.lifetime.start.p0(i64 4, ptr %17) #4
  br i1 %110, label %111, label %123

111:                                              ; preds = %106
  %112 = load i32, ptr %11, align 4, !tbaa !9
  %113 = sext i32 %112 to i64
  %114 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %113)
          to label %115 unwind label %128

115:                                              ; preds = %111
  %116 = load i8, ptr %114, align 1, !tbaa !11
  %117 = sext i8 %116 to i32
  store i32 %117, ptr %17, align 4, !tbaa !9
  %118 = invoke noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEEixEOi(ptr noundef nonnull align 8 dereferenceable(56) %6, ptr noundef nonnull align 4 dereferenceable(4) %17)
          to label %119 unwind label %128

119:                                              ; preds = %115
  %120 = load i32, ptr %118, align 4, !tbaa !9
  %121 = load i32, ptr %5, align 4, !tbaa !9
  %122 = icmp slt i32 %120, %121
  br label %123

123:                                              ; preds = %119, %106
  %124 = phi i1 [ false, %106 ], [ %122, %119 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr %17) #4
  br i1 %124, label %125, label %132

125:                                              ; preds = %123
  %126 = load i32, ptr %11, align 4, !tbaa !9
  %127 = add nsw i32 %126, 1
  store i32 %127, ptr %11, align 4, !tbaa !9
  br label %106, !llvm.loop !15

128:                                              ; preds = %115, %111
  %129 = landingpad { ptr, i32 }
          cleanup
  %130 = extractvalue { ptr, i32 } %129, 0
  store ptr %130, ptr %9, align 8
  %131 = extractvalue { ptr, i32 } %129, 1
  store i32 %131, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %17) #4
  br label %162

132:                                              ; preds = %123
  %133 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %134 = load i32, ptr %11, align 4, !tbaa !9
  %135 = sext i32 %134 to i64
  %136 = sub i64 %133, %135
  %137 = sub i64 %136, 1
  %138 = icmp ugt i64 %137, 0
  br i1 %138, label %139, label %151

139:                                              ; preds = %132
  %140 = load i32, ptr %11, align 4, !tbaa !9
  %141 = sext i32 %140 to i64
  %142 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  invoke void @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6substrEmm(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %18, ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %141, i64 noundef %142)
          to label %143 unwind label %97

143:                                              ; preds = %139
  %144 = load i32, ptr %5, align 4, !tbaa !9
  %145 = invoke noundef i32 @_Z16longestSubstringNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEi(ptr noundef %18, i32 noundef %144)
          to label %146 unwind label %147

146:                                              ; preds = %143
  store i32 %145, ptr %13, align 4, !tbaa !9
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %18) #4
  br label %151

147:                                              ; preds = %143
  %148 = landingpad { ptr, i32 }
          cleanup
  %149 = extractvalue { ptr, i32 } %148, 0
  store ptr %149, ptr %9, align 8
  %150 = extractvalue { ptr, i32 } %148, 1
  store i32 %150, ptr %10, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %18) #4
  br label %162

151:                                              ; preds = %146, %132
  call void @llvm.lifetime.start.p0(i64 4, ptr %19) #4
  %152 = invoke noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %12, ptr noundef nonnull align 4 dereferenceable(4) %13)
          to label %153 unwind label %156

153:                                              ; preds = %151
  %154 = load i32, ptr %152, align 4, !tbaa !9
  store i32 %154, ptr %19, align 4, !tbaa !9
  %155 = load i32, ptr %19, align 4, !tbaa !9
  store i32 %155, ptr %3, align 4
  store i32 1, ptr %15, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %19) #4
  br label %160

156:                                              ; preds = %151
  %157 = landingpad { ptr, i32 }
          cleanup
  %158 = extractvalue { ptr, i32 } %157, 0
  store ptr %158, ptr %9, align 8
  %159 = extractvalue { ptr, i32 } %157, 1
  store i32 %159, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %19) #4
  br label %162

160:                                              ; preds = %153, %84, %78
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #4
  call void @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEED2Ev(ptr noundef nonnull align 8 dereferenceable(56) %6) #4
  call void @llvm.lifetime.end.p0(i64 56, ptr %6) #4
  %161 = load i32, ptr %3, align 4
  ret i32 %161

162:                                              ; preds = %156, %147, %128, %101, %97, %69
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #4
  br label %163

163:                                              ; preds = %162, %40
  call void @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEED2Ev(ptr noundef nonnull align 8 dereferenceable(56) %6) #4
  call void @llvm.lifetime.end.p0(i64 56, ptr %6) #4
  br label %164

164:                                              ; preds = %163
  %165 = load ptr, ptr %9, align 8
  %166 = load i32, ptr %10, align 4
  %167 = insertvalue { ptr, i32 } poison, ptr %165, 0
  %168 = insertvalue { ptr, i32 } %167, i32 %166, 1
  resume { ptr, i32 } %168
}

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEEC2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #2 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 uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEEixEOi(ptr noundef nonnull align 8 dereferenceable(56), ptr noundef nonnull align 4 dereferenceable(4)) #0 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress uwtable
declare void @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6substrEmm(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), i64 noundef, i64 noundef) #0 align 2

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

; Function Attrs: 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)) #3

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEED2Ev(ptr noundef nonnull align 8 dereferenceable(56)) 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"}
!14 = distinct !{!14, !13}
!15 = distinct !{!15, !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::unordered_map" = type { %"class.std::_Hashtable" }
%"class.std::_Hashtable" = type { ptr, i64, %"struct.std::__detail::_Hash_node_base", i64, %"struct.std::__detail::_Prime_rehash_policy", ptr }
%"struct.std::__detail::_Hash_node_base" = type { ptr }
%"struct.std::__detail::_Prime_rehash_policy" = type { float, i64 }
%"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] }

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z16longestSubstringNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEi(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %3 = alloca %"class.std::unordered_map", align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca %"class.std::__cxx11::basic_string", align 8
  %9 = alloca i32, align 4
  %10 = alloca %"class.std::__cxx11::basic_string", align 8
  call void @llvm.lifetime.start.p0(i64 56, ptr nonnull %3) #4
  call void @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEEC2Ev(ptr noundef nonnull align 8 dereferenceable(56) %3) #4
  %11 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %.not55 = icmp eq i64 %11, 0
  br i1 %.not55, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %19, %2
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #4
  %12 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %13 = trunc i64 %12 to i32
  store i32 %13, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #4
  store i32 0, ptr %6, align 4, !tbaa !5
  %14 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %.not56 = icmp eq i64 %14, 0
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %7) #4
  br i1 %.not56, label %.critedge, label %.lr.ph49

.lr.ph:                                           ; preds = %2, %19
  %indvars.iv = phi i64 [ %indvars.iv.next, %19 ], [ 0, %2 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #4
  %15 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %indvars.iv)
  %16 = load i8, ptr %15, align 1, !tbaa !9
  %17 = sext i8 %16 to i32
  store i32 %17, ptr %4, align 4, !tbaa !5
  %18 = invoke noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEEixEOi(ptr noundef nonnull align 8 dereferenceable(56) %3, ptr noundef nonnull align 4 dereferenceable(4) %4)
          to label %19 unwind label %24

19:                                               ; preds = %.lr.ph
  %20 = load i32, ptr %18, align 4, !tbaa !5
  %21 = add nsw i32 %20, 1
  store i32 %21, ptr %18, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #4
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %22 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %23 = icmp ugt i64 %22, %indvars.iv.next
  br i1 %23, label %.lr.ph, label %._crit_edge, !llvm.loop !10

24:                                               ; preds = %.lr.ph
  %25 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #4
  br label %86

.lr.ph49:                                         ; preds = %._crit_edge, %32
  %indvars.iv69 = phi i64 [ %indvars.iv.next70, %32 ], [ 0, %._crit_edge ]
  %26 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %indvars.iv69)
  %27 = load i8, ptr %26, align 1, !tbaa !9
  %28 = sext i8 %27 to i32
  store i32 %28, ptr %7, align 4, !tbaa !5
  %29 = invoke noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEEixEOi(ptr noundef nonnull align 8 dereferenceable(56) %3, ptr noundef nonnull align 4 dereferenceable(4) %7)
          to label %30 unwind label %35

30:                                               ; preds = %.lr.ph49
  %31 = load i32, ptr %29, align 4, !tbaa !5
  %.not = icmp slt i32 %31, %1
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #4
  br i1 %.not, label %.loopexit37, label %32

32:                                               ; preds = %30
  %indvars.iv.next70 = add nuw nsw i64 %indvars.iv69, 1
  %33 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %34 = icmp ugt i64 %33, %indvars.iv.next70
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %7) #4
  br i1 %34, label %.lr.ph49, label %.critedge, !llvm.loop !12

35:                                               ; preds = %.lr.ph49
  %36 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #4
  br label %85

.critedge:                                        ; preds = %32, %._crit_edge
  %.lcssa40 = phi i64 [ 0, %._crit_edge ], [ %indvars.iv.next70, %32 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #4
  br label %.loopexit37

.loopexit37:                                      ; preds = %30, %.critedge
  %37 = phi i64 [ %.lcssa40, %.critedge ], [ %indvars.iv69, %30 ]
  %38 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %39 = icmp eq i64 %38, %37
  %40 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  br i1 %39, label %41, label %43

41:                                               ; preds = %.loopexit37
  %42 = trunc i64 %40 to i32
  br label %84

43:                                               ; preds = %.loopexit37
  %44 = icmp eq i64 %40, 0
  br i1 %44, label %84, label %45

45:                                               ; preds = %43
  %46 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %47 = icmp ugt i64 %46, %37
  br i1 %47, label %48, label %56

48:                                               ; preds = %45
  invoke void @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6substrEmm(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %8, ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef 0, i64 noundef %37)
          to label %49 unwind label %52

49:                                               ; preds = %48
  %50 = invoke noundef i32 @_Z16longestSubstringNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEi(ptr noundef nonnull %8, i32 noundef %1)
          to label %51 unwind label %54

51:                                               ; preds = %49
  store i32 %50, ptr %5, align 4, !tbaa !5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %8) #4
  br label %56

52:                                               ; preds = %74, %48
  %53 = landingpad { ptr, i32 }
          cleanup
  br label %85

54:                                               ; preds = %49
  %55 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %8) #4
  br label %85

56:                                               ; preds = %51, %45
  %57 = and i64 %37, 4294967295
  %58 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %59 = icmp ugt i64 %58, %57
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %9) #4
  br i1 %59, label %.lr.ph53, label %.critedge2

60:                                               ; preds = %67
  %indvars.iv.next73 = add nuw nsw i64 %indvars.iv72, 1
  %61 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %62 = icmp ugt i64 %61, %indvars.iv.next73
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %9) #4
  br i1 %62, label %.lr.ph53, label %.critedge2, !llvm.loop !13

.lr.ph53:                                         ; preds = %56, %60
  %indvars.iv72 = phi i64 [ %indvars.iv.next73, %60 ], [ %57, %56 ]
  %63 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %indvars.iv72)
  %64 = load i8, ptr %63, align 1, !tbaa !9
  %65 = sext i8 %64 to i32
  store i32 %65, ptr %9, align 4, !tbaa !5
  %66 = invoke noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEEixEOi(ptr noundef nonnull align 8 dereferenceable(56) %3, ptr noundef nonnull align 4 dereferenceable(4) %9)
          to label %67 unwind label %70

67:                                               ; preds = %.lr.ph53
  %68 = load i32, ptr %66, align 4, !tbaa !5
  %69 = icmp slt i32 %68, %1
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %9) #4
  br i1 %69, label %60, label %.loopexit

70:                                               ; preds = %.lr.ph53
  %71 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %9) #4
  br label %85

.critedge2:                                       ; preds = %60, %56
  %.lcssa = phi i64 [ %57, %56 ], [ %indvars.iv.next73, %60 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %9) #4
  br label %.loopexit

.loopexit:                                        ; preds = %67, %.critedge2
  %72 = phi i64 [ %.lcssa, %.critedge2 ], [ %indvars.iv72, %67 ]
  %73 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %.neg = add nuw nsw i64 %72, 1
  %.not33 = icmp eq i64 %73, %.neg
  br i1 %.not33, label %81, label %74

74:                                               ; preds = %.loopexit
  %75 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  invoke void @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6substrEmm(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %10, ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %72, i64 noundef %75)
          to label %76 unwind label %52

76:                                               ; preds = %74
  %77 = invoke noundef i32 @_Z16longestSubstringNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEi(ptr noundef nonnull %10, i32 noundef %1)
          to label %78 unwind label %79

78:                                               ; preds = %76
  store i32 %77, ptr %6, align 4, !tbaa !5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %10) #4
  br label %81

79:                                               ; preds = %76
  %80 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %10) #4
  br label %85

81:                                               ; preds = %78, %.loopexit
  %82 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %5, ptr noundef nonnull align 4 dereferenceable(4) %6)
  %83 = load i32, ptr %82, align 4, !tbaa !5
  br label %84

84:                                               ; preds = %43, %81, %41
  %.0 = phi i32 [ %42, %41 ], [ %83, %81 ], [ 0, %43 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #4
  call void @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEED2Ev(ptr noundef nonnull align 8 dereferenceable(56) %3) #4
  call void @llvm.lifetime.end.p0(i64 56, ptr nonnull %3) #4
  ret i32 %.0

85:                                               ; preds = %79, %70, %54, %52, %35
  %.pn = phi { ptr, i32 } [ %80, %79 ], [ %53, %52 ], [ %71, %70 ], [ %55, %54 ], [ %36, %35 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #4
  br label %86

86:                                               ; preds = %85, %24
  %.pn35 = phi { ptr, i32 } [ %25, %24 ], [ %.pn, %85 ]
  call void @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEED2Ev(ptr noundef nonnull align 8 dereferenceable(56) %3) #4
  call void @llvm.lifetime.end.p0(i64 56, ptr nonnull %3) #4
  resume { ptr, i32 } %.pn35
}

; 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 nounwind uwtable
declare dso_local void @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEEC2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #2 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 uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEEixEOi(ptr noundef nonnull align 8 dereferenceable(56), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0 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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress uwtable
declare void @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6substrEmm(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), i64 noundef, i64 noundef) local_unnamed_addr #0 align 2

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

; Function Attrs: 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 #3

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEED2Ev(ptr noundef nonnull align 8 dereferenceable(56)) 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 = !{!"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}
!13 = distinct !{!13, !11}


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