; LLVM IR from TrainingByPackt/CPP-Data-Structures-and-Algorithm-Design-Principles :: Lesson8/Activity19 (Activity 19)

; 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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::vector<std::pair<int, int>>, std::allocator<std::vector<std::pair<int, int>>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<std::pair<int, int>>, std::allocator<std::vector<std::pair<int, int>>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<std::pair<int, int>>, std::allocator<std::vector<std::pair<int, int>>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<std::pair<int, int>>, std::allocator<std::vector<std::pair<int, int>>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::pair" = type { i32, i32 }
%"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::vector.3" = type { %"struct.std::_Vector_base.4" }
%"struct.std::_Vector_base.4" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@found = external dso_local global %"class.std::vector", align 8

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z14LCS_BruteForceNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES4_iiSt6vectorISt4pairIiiESaIS7_EE(ptr noundef %0, ptr noundef %1, i32 noundef %2, i32 noundef %3, ptr noundef %4) #0 personality ptr @__gxx_personality_v0 {
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca ptr, align 8
  %12 = alloca %"struct.std::pair", align 4
  %13 = alloca %"class.std::__cxx11::basic_string", align 8
  %14 = alloca %"class.std::__cxx11::basic_string", align 8
  %15 = alloca ptr, align 8
  %16 = alloca i32, align 4
  %17 = alloca %"class.std::vector.3", align 8
  %18 = alloca i32, align 4
  %19 = alloca %"class.std::__cxx11::basic_string", align 8
  %20 = alloca %"class.std::__cxx11::basic_string", align 8
  %21 = alloca %"class.std::vector.3", align 8
  %22 = alloca i32, align 4
  %23 = alloca %"class.std::__cxx11::basic_string", align 8
  %24 = alloca %"class.std::__cxx11::basic_string", align 8
  %25 = alloca %"class.std::vector.3", align 8
  store ptr %0, ptr %7, align 8, !tbaa !5
  store ptr %1, ptr %8, align 8, !tbaa !5
  store i32 %2, ptr %9, align 4, !tbaa !9
  store i32 %3, ptr %10, align 4, !tbaa !9
  store ptr %4, ptr %11, align 8, !tbaa !5
  %26 = load i32, ptr %9, align 4, !tbaa !9
  %27 = sext i32 %26 to i64
  %28 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %29 = icmp uge i64 %27, %28
  br i1 %29, label %35, label %30

30:                                               ; preds = %5
  %31 = load i32, ptr %10, align 4, !tbaa !9
  %32 = sext i32 %31 to i64
  %33 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %1) #4
  %34 = icmp uge i64 %32, %33
  br i1 %34, label %35, label %38

35:                                               ; preds = %30, %5
  call void @_ZNSt6vectorIS_ISt4pairIiiESaIS1_EESaIS3_EE9push_backERKS3_(ptr noundef nonnull align 8 dereferenceable(24) @found, ptr noundef nonnull align 8 dereferenceable(24) %4)
  %36 = call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %4) #4
  %37 = trunc i64 %36 to i32
  store i32 %37, ptr %6, align 4
  br label %126

38:                                               ; preds = %30
  %39 = load i32, ptr %9, align 4, !tbaa !9
  %40 = sext i32 %39 to i64
  %41 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %40)
  %42 = load i8, ptr %41, align 1, !tbaa !11
  %43 = sext i8 %42 to i32
  %44 = load i32, ptr %10, align 4, !tbaa !9
  %45 = sext i32 %44 to i64
  %46 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %1, i64 noundef %45)
  %47 = load i8, ptr %46, align 1, !tbaa !11
  %48 = sext i8 %47 to i32
  %49 = icmp eq i32 %43, %48
  br i1 %49, label %50, label %73

50:                                               ; preds = %38
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #4
  call void @_ZNSt4pairIiiEC2IRiS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8) %12, ptr noundef nonnull align 4 dereferenceable(4) %9, ptr noundef nonnull align 4 dereferenceable(4) %10)
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %4, ptr noundef nonnull align 4 dereferenceable(8) %12)
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %13, ptr noundef nonnull align 8 dereferenceable(32) %0)
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %14, ptr noundef nonnull align 8 dereferenceable(32) %1)
          to label %51 unwind label %59

51:                                               ; preds = %50
  %52 = load i32, ptr %9, align 4, !tbaa !9
  %53 = add nsw i32 %52, 1
  %54 = load i32, ptr %10, align 4, !tbaa !9
  %55 = add nsw i32 %54, 1
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24) %17, ptr noundef nonnull align 8 dereferenceable(24) %4)
          to label %56 unwind label %63

56:                                               ; preds = %51
  %57 = invoke noundef i32 @_Z14LCS_BruteForceNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES4_iiSt6vectorISt4pairIiiESaIS7_EE(ptr noundef %13, ptr noundef %14, i32 noundef %53, i32 noundef %55, ptr noundef %17)
          to label %58 unwind label %67

58:                                               ; preds = %56
  store i32 %57, ptr %6, align 4
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %17) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %14) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %13) #4
  br label %126

59:                                               ; preds = %50
  %60 = landingpad { ptr, i32 }
          cleanup
  %61 = extractvalue { ptr, i32 } %60, 0
  store ptr %61, ptr %15, align 8
  %62 = extractvalue { ptr, i32 } %60, 1
  store i32 %62, ptr %16, align 4
  br label %72

63:                                               ; preds = %51
  %64 = landingpad { ptr, i32 }
          cleanup
  %65 = extractvalue { ptr, i32 } %64, 0
  store ptr %65, ptr %15, align 8
  %66 = extractvalue { ptr, i32 } %64, 1
  store i32 %66, ptr %16, align 4
  br label %71

67:                                               ; preds = %56
  %68 = landingpad { ptr, i32 }
          cleanup
  %69 = extractvalue { ptr, i32 } %68, 0
  store ptr %69, ptr %15, align 8
  %70 = extractvalue { ptr, i32 } %68, 1
  store i32 %70, ptr %16, align 4
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %17) #4
  br label %71

71:                                               ; preds = %67, %63
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %14) #4
  br label %72

72:                                               ; preds = %71, %59
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %13) #4
  br label %128

73:                                               ; preds = %38
  call void @llvm.lifetime.start.p0(i64 4, ptr %18) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %19, ptr noundef nonnull align 8 dereferenceable(32) %0)
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %20, ptr noundef nonnull align 8 dereferenceable(32) %1)
          to label %74 unwind label %92

74:                                               ; preds = %73
  %75 = load i32, ptr %9, align 4, !tbaa !9
  %76 = add nsw i32 %75, 1
  %77 = load i32, ptr %10, align 4, !tbaa !9
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24) %21, ptr noundef nonnull align 8 dereferenceable(24) %4)
          to label %78 unwind label %96

78:                                               ; preds = %74
  %79 = invoke noundef i32 @_Z14LCS_BruteForceNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES4_iiSt6vectorISt4pairIiiESaIS7_EE(ptr noundef %19, ptr noundef %20, i32 noundef %76, i32 noundef %77, ptr noundef %21)
          to label %80 unwind label %100

80:                                               ; preds = %78
  store i32 %79, ptr %18, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %22) #4
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %23, ptr noundef nonnull align 8 dereferenceable(32) %0)
          to label %81 unwind label %104

81:                                               ; preds = %80
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %24, ptr noundef nonnull align 8 dereferenceable(32) %1)
          to label %82 unwind label %108

82:                                               ; preds = %81
  %83 = load i32, ptr %9, align 4, !tbaa !9
  %84 = load i32, ptr %10, align 4, !tbaa !9
  %85 = add nsw i32 %84, 1
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24) %25, ptr noundef nonnull align 8 dereferenceable(24) %4)
          to label %86 unwind label %112

86:                                               ; preds = %82
  %87 = invoke noundef i32 @_Z14LCS_BruteForceNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES4_iiSt6vectorISt4pairIiiESaIS7_EE(ptr noundef %23, ptr noundef %24, i32 noundef %83, i32 noundef %85, ptr noundef %25)
          to label %88 unwind label %116

88:                                               ; preds = %86
  store i32 %87, ptr %22, align 4, !tbaa !9
  %89 = invoke noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %18, ptr noundef nonnull align 4 dereferenceable(4) %22)
          to label %90 unwind label %116

90:                                               ; preds = %88
  %91 = load i32, ptr %89, align 4, !tbaa !9
  store i32 %91, ptr %6, align 4
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %25) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %24) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %23) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %22) #4
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %21) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %20) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %19) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %18) #4
  br label %126

92:                                               ; preds = %73
  %93 = landingpad { ptr, i32 }
          cleanup
  %94 = extractvalue { ptr, i32 } %93, 0
  store ptr %94, ptr %15, align 8
  %95 = extractvalue { ptr, i32 } %93, 1
  store i32 %95, ptr %16, align 4
  br label %125

96:                                               ; preds = %74
  %97 = landingpad { ptr, i32 }
          cleanup
  %98 = extractvalue { ptr, i32 } %97, 0
  store ptr %98, ptr %15, align 8
  %99 = extractvalue { ptr, i32 } %97, 1
  store i32 %99, ptr %16, align 4
  br label %124

100:                                              ; preds = %78
  %101 = landingpad { ptr, i32 }
          cleanup
  %102 = extractvalue { ptr, i32 } %101, 0
  store ptr %102, ptr %15, align 8
  %103 = extractvalue { ptr, i32 } %101, 1
  store i32 %103, ptr %16, align 4
  br label %123

104:                                              ; preds = %80
  %105 = landingpad { ptr, i32 }
          cleanup
  %106 = extractvalue { ptr, i32 } %105, 0
  store ptr %106, ptr %15, align 8
  %107 = extractvalue { ptr, i32 } %105, 1
  store i32 %107, ptr %16, align 4
  br label %122

108:                                              ; preds = %81
  %109 = landingpad { ptr, i32 }
          cleanup
  %110 = extractvalue { ptr, i32 } %109, 0
  store ptr %110, ptr %15, align 8
  %111 = extractvalue { ptr, i32 } %109, 1
  store i32 %111, ptr %16, align 4
  br label %121

112:                                              ; preds = %82
  %113 = landingpad { ptr, i32 }
          cleanup
  %114 = extractvalue { ptr, i32 } %113, 0
  store ptr %114, ptr %15, align 8
  %115 = extractvalue { ptr, i32 } %113, 1
  store i32 %115, ptr %16, align 4
  br label %120

116:                                              ; preds = %88, %86
  %117 = landingpad { ptr, i32 }
          cleanup
  %118 = extractvalue { ptr, i32 } %117, 0
  store ptr %118, ptr %15, align 8
  %119 = extractvalue { ptr, i32 } %117, 1
  store i32 %119, ptr %16, align 4
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %25) #4
  br label %120

120:                                              ; preds = %116, %112
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %24) #4
  br label %121

121:                                              ; preds = %120, %108
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %23) #4
  br label %122

122:                                              ; preds = %121, %104
  call void @llvm.lifetime.end.p0(i64 4, ptr %22) #4
  br label %123

123:                                              ; preds = %122, %100
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %21) #4
  br label %124

124:                                              ; preds = %123, %96
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %20) #4
  br label %125

125:                                              ; preds = %124, %92
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %19) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %18) #4
  br label %128

126:                                              ; preds = %90, %58, %35
  %127 = load i32, ptr %6, align 4
  ret i32 %127

128:                                              ; preds = %125, %72
  %129 = load ptr, ptr %15, align 8
  %130 = load i32, ptr %16, align 4
  %131 = insertvalue { ptr, i32 } poison, ptr %129, 0
  %132 = insertvalue { ptr, i32 } %131, i32 %130, 1
  resume { ptr, i32 } %132
}

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_ISt4pairIiiESaIS1_EESaIS3_EE9push_backERKS3_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 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) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(8)) #0 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIiiEC2IRiS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) unnamed_addr #1 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) 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: 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

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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}


; 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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::vector<std::pair<int, int>>, std::allocator<std::vector<std::pair<int, int>>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<std::pair<int, int>>, std::allocator<std::vector<std::pair<int, int>>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<std::pair<int, int>>, std::allocator<std::vector<std::pair<int, int>>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<std::pair<int, int>>, std::allocator<std::vector<std::pair<int, int>>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::pair" = type { i32, i32 }
%"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::vector.3" = type { %"struct.std::_Vector_base.4" }
%"struct.std::_Vector_base.4" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@found = external dso_local global %"class.std::vector", align 8

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z14LCS_BruteForceNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES4_iiSt6vectorISt4pairIiiESaIS7_EE(ptr noundef nonnull %0, ptr noundef %1, i32 noundef %2, i32 noundef %3, ptr noundef %4) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca %"struct.std::pair", align 4
  %9 = alloca %"class.std::__cxx11::basic_string", align 8
  %10 = alloca %"class.std::__cxx11::basic_string", align 8
  %11 = alloca %"class.std::vector.3", align 8
  %12 = alloca i32, align 4
  %13 = alloca %"class.std::__cxx11::basic_string", align 8
  %14 = alloca %"class.std::__cxx11::basic_string", align 8
  %15 = alloca %"class.std::vector.3", align 8
  %16 = alloca i32, align 4
  %17 = alloca %"class.std::__cxx11::basic_string", align 8
  %18 = alloca %"class.std::__cxx11::basic_string", align 8
  %19 = alloca %"class.std::vector.3", align 8
  store i32 %2, ptr %6, align 4, !tbaa !5
  store i32 %3, ptr %7, align 4, !tbaa !5
  %20 = sext i32 %2 to i64
  %21 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %.not = icmp ugt i64 %21, %20
  br i1 %.not, label %22, label %25

22:                                               ; preds = %5
  %23 = sext i32 %3 to i64
  %24 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %1) #4
  %.not12 = icmp ugt i64 %24, %23
  br i1 %.not12, label %28, label %25

25:                                               ; preds = %22, %5
  tail call void @_ZNSt6vectorIS_ISt4pairIiiESaIS1_EESaIS3_EE9push_backERKS3_(ptr noundef nonnull align 8 dereferenceable(24) @found, ptr noundef nonnull align 8 dereferenceable(24) %4)
  %26 = tail call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %4) #4
  %27 = trunc i64 %26 to i32
  br label %85

28:                                               ; preds = %22
  %29 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %20)
  %30 = load i8, ptr %29, align 1, !tbaa !9
  %31 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %1, i64 noundef %23)
  %32 = load i8, ptr %31, align 1, !tbaa !9
  %33 = icmp eq i8 %30, %32
  br i1 %33, label %34, label %51

34:                                               ; preds = %28
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %8) #4
  call void @_ZNSt4pairIiiEC2IRiS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8) %8, ptr noundef nonnull align 4 dereferenceable(4) %6, ptr noundef nonnull align 4 dereferenceable(4) %7)
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %4, ptr noundef nonnull align 4 dereferenceable(8) %8)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %8) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %9, ptr noundef nonnull align 8 dereferenceable(32) %0)
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %10, ptr noundef nonnull align 8 dereferenceable(32) %1)
          to label %35 unwind label %43

35:                                               ; preds = %34
  %36 = load i32, ptr %6, align 4, !tbaa !5
  %37 = load i32, ptr %7, align 4, !tbaa !5
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24) %11, ptr noundef nonnull align 8 dereferenceable(24) %4)
          to label %38 unwind label %45

38:                                               ; preds = %35
  %39 = add nsw i32 %37, 1
  %40 = add nsw i32 %36, 1
  %41 = invoke noundef i32 @_Z14LCS_BruteForceNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES4_iiSt6vectorISt4pairIiiESaIS7_EE(ptr noundef nonnull %9, ptr noundef nonnull %10, i32 noundef %40, i32 noundef %39, ptr noundef nonnull %11)
          to label %42 unwind label %47

42:                                               ; preds = %38
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %11) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %10) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %9) #4
  br label %85

43:                                               ; preds = %34
  %44 = landingpad { ptr, i32 }
          cleanup
  br label %50

45:                                               ; preds = %35
  %46 = landingpad { ptr, i32 }
          cleanup
  br label %49

47:                                               ; preds = %38
  %48 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %11) #4
  br label %49

49:                                               ; preds = %47, %45
  %.pn19 = phi { ptr, i32 } [ %48, %47 ], [ %46, %45 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %10) #4
  br label %50

50:                                               ; preds = %49, %43
  %.pn19.pn = phi { ptr, i32 } [ %.pn19, %49 ], [ %44, %43 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %9) #4
  br label %86

51:                                               ; preds = %28
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %12) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %13, ptr noundef nonnull align 8 dereferenceable(32) %0)
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %14, ptr noundef nonnull align 8 dereferenceable(32) %1)
          to label %52 unwind label %65

52:                                               ; preds = %51
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24) %15, ptr noundef nonnull align 8 dereferenceable(24) %4)
          to label %53 unwind label %67

53:                                               ; preds = %52
  %54 = add nsw i32 %2, 1
  %55 = invoke noundef i32 @_Z14LCS_BruteForceNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES4_iiSt6vectorISt4pairIiiESaIS7_EE(ptr noundef nonnull %13, ptr noundef nonnull %14, i32 noundef %54, i32 noundef %3, ptr noundef nonnull %15)
          to label %56 unwind label %69

56:                                               ; preds = %53
  store i32 %55, ptr %12, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %16) #4
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %17, ptr noundef nonnull align 8 dereferenceable(32) %0)
          to label %57 unwind label %71

57:                                               ; preds = %56
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %18, ptr noundef nonnull align 8 dereferenceable(32) %1)
          to label %58 unwind label %73

58:                                               ; preds = %57
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24) %19, ptr noundef nonnull align 8 dereferenceable(24) %4)
          to label %59 unwind label %75

59:                                               ; preds = %58
  %60 = add nsw i32 %3, 1
  %61 = invoke noundef i32 @_Z14LCS_BruteForceNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES4_iiSt6vectorISt4pairIiiESaIS7_EE(ptr noundef nonnull %17, ptr noundef nonnull %18, i32 noundef %2, i32 noundef %60, ptr noundef nonnull %19)
          to label %62 unwind label %77

62:                                               ; preds = %59
  store i32 %61, ptr %16, align 4, !tbaa !5
  %63 = call 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) %16)
  %64 = load i32, ptr %63, align 4, !tbaa !5
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %19) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %18) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %17) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %16) #4
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %15) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %14) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %13) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %12) #4
  br label %85

65:                                               ; preds = %51
  %66 = landingpad { ptr, i32 }
          cleanup
  br label %84

67:                                               ; preds = %52
  %68 = landingpad { ptr, i32 }
          cleanup
  br label %83

69:                                               ; preds = %53
  %70 = landingpad { ptr, i32 }
          cleanup
  br label %82

71:                                               ; preds = %56
  %72 = landingpad { ptr, i32 }
          cleanup
  br label %81

73:                                               ; preds = %57
  %74 = landingpad { ptr, i32 }
          cleanup
  br label %80

75:                                               ; preds = %58
  %76 = landingpad { ptr, i32 }
          cleanup
  br label %79

77:                                               ; preds = %59
  %78 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %19) #4
  br label %79

79:                                               ; preds = %77, %75
  %.pn = phi { ptr, i32 } [ %78, %77 ], [ %76, %75 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %18) #4
  br label %80

80:                                               ; preds = %79, %73
  %.pn.pn = phi { ptr, i32 } [ %.pn, %79 ], [ %74, %73 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %17) #4
  br label %81

81:                                               ; preds = %80, %71
  %.pn.pn.pn = phi { ptr, i32 } [ %.pn.pn, %80 ], [ %72, %71 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %16) #4
  br label %82

82:                                               ; preds = %81, %69
  %.pn.pn.pn.pn = phi { ptr, i32 } [ %.pn.pn.pn, %81 ], [ %70, %69 ]
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %15) #4
  br label %83

83:                                               ; preds = %82, %67
  %.pn.pn.pn.pn.pn = phi { ptr, i32 } [ %.pn.pn.pn.pn, %82 ], [ %68, %67 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %14) #4
  br label %84

84:                                               ; preds = %83, %65
  %.pn.pn.pn.pn.pn.pn = phi { ptr, i32 } [ %.pn.pn.pn.pn.pn, %83 ], [ %66, %65 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %13) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %12) #4
  br label %86

85:                                               ; preds = %62, %42, %25
  %.011 = phi i32 [ %27, %25 ], [ %41, %42 ], [ %64, %62 ]
  ret i32 %.011

86:                                               ; preds = %84, %50
  %.pn19.pn.pn = phi { ptr, i32 } [ %.pn19.pn, %50 ], [ %.pn.pn.pn.pn.pn.pn, %84 ]
  resume { ptr, i32 } %.pn19.pn.pn
}

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_ISt4pairIiiESaIS1_EESaIS3_EE9push_backERKS3_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 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 #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIiiEC2IRiS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) 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: 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

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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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}


; Effective O3 passes: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass