; LLVM IR from Mohammed-Shoaib/Coding-Problems :: Google/Kick Start/2021/Round A/D.ll (Z8checksumiRSt6vectorIiSaIiEES2_RS_IS1_SaIS1_EES5_)

; 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.UnionFind = type { %"class.std::vector", %"class.std::vector" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::initializer_list" = type { ptr, i64 }
%"class.std::allocator" = type { i8 }
%"class.std::reverse_iterator" = type { %"class.__gnu_cxx::__normal_iterator" }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%"class.std::tuple" = type { %"struct.std::_Tuple_impl" }
%"struct.std::_Tuple_impl" = type { %"struct.std::_Tuple_impl.5", %"struct.std::_Head_base.8" }
%"struct.std::_Tuple_impl.5" = type { %"struct.std::_Tuple_impl.6", %"struct.std::_Head_base.7" }
%"struct.std::_Tuple_impl.6" = type { %"struct.std::_Head_base" }
%"struct.std::_Head_base" = type { ptr }
%"struct.std::_Head_base.7" = type { ptr }
%"struct.std::_Head_base.8" = type { ptr }

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z8checksumiRSt6vectorIiSaIiEES2_RS_IS1_SaIS1_EES5_(i32 noundef %0, ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(24) %2, ptr noundef nonnull align 8 dereferenceable(24) %3, ptr noundef nonnull align 8 dereferenceable(24) %4) #0 personality ptr @__gxx_personality_v0 {
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  %12 = alloca %class.UnionFind, align 8
  %13 = alloca %"class.std::vector.0", align 8
  %14 = alloca i32, align 4
  %15 = alloca i32, align 4
  %16 = alloca i32, align 4
  %17 = alloca %"class.std::vector", align 8
  %18 = alloca %"class.std::initializer_list", align 8
  %19 = alloca [3 x i32], align 4
  %20 = alloca %"class.std::allocator", align 1
  %21 = alloca ptr, align 8
  %22 = alloca i32, align 4
  %23 = alloca %"class.std::reverse_iterator", align 8
  %24 = alloca %"class.std::reverse_iterator", align 8
  %25 = alloca ptr, align 8
  %26 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %27 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %28 = alloca ptr, align 8
  %29 = alloca i32, align 4
  %30 = alloca i32, align 4
  %31 = alloca i32, align 4
  %32 = alloca %"class.std::tuple", align 8
  %33 = alloca %"class.std::tuple", align 8
  store i32 %0, ptr %6, align 4, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !9
  store ptr %2, ptr %8, align 8, !tbaa !9
  store ptr %3, ptr %9, align 8, !tbaa !9
  store ptr %4, ptr %10, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #5
  store i32 0, ptr %11, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 48, ptr %12) #5
  %34 = load i32, ptr %6, align 4, !tbaa !5
  %35 = mul nsw i32 2, %34
  call void @_ZN9UnionFindC2Ei(ptr noundef nonnull align 8 dereferenceable(48) %12, i32 noundef %35)
  call void @llvm.lifetime.start.p0(i64 24, ptr %13) #5
  call void @_ZNSt6vectorIS_IiSaIiEESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %13) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #5
  store i32 0, ptr %14, align 4, !tbaa !5
  br label %36

36:                                               ; preds = %102, %5
  %37 = load i32, ptr %14, align 4, !tbaa !5
  %38 = load i32, ptr %6, align 4, !tbaa !5
  %39 = icmp slt i32 %37, %38
  br i1 %39, label %41, label %40

40:                                               ; preds = %36
  store i32 2, ptr %15, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #5
  br label %105

41:                                               ; preds = %36
  call void @llvm.lifetime.start.p0(i64 4, ptr %16) #5
  store i32 0, ptr %16, align 4, !tbaa !5
  br label %42

42:                                               ; preds = %98, %41
  %43 = load i32, ptr %16, align 4, !tbaa !5
  %44 = load i32, ptr %6, align 4, !tbaa !5
  %45 = icmp slt i32 %43, %44
  br i1 %45, label %47, label %46

46:                                               ; preds = %42
  store i32 5, ptr %15, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %16) #5
  br label %101

47:                                               ; preds = %42
  %48 = load ptr, ptr %9, align 8, !tbaa !9
  %49 = load i32, ptr %14, align 4, !tbaa !5
  %50 = sext i32 %49 to i64
  %51 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %48, i64 noundef %50) #5
  %52 = load i32, ptr %16, align 4, !tbaa !5
  %53 = sext i32 %52 to i64
  %54 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %51, i64 noundef %53) #5
  %55 = load i32, ptr %54, align 4, !tbaa !5
  %56 = icmp eq i32 %55, -1
  br i1 %56, label %57, label %97

57:                                               ; preds = %47
  %58 = load ptr, ptr %10, align 8, !tbaa !9
  %59 = load i32, ptr %14, align 4, !tbaa !5
  %60 = sext i32 %59 to i64
  %61 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %58, i64 noundef %60) #5
  %62 = load i32, ptr %16, align 4, !tbaa !5
  %63 = sext i32 %62 to i64
  %64 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %61, i64 noundef %63) #5
  %65 = load i32, ptr %64, align 4, !tbaa !5
  %66 = load i32, ptr %11, align 4, !tbaa !5
  %67 = add nsw i32 %66, %65
  store i32 %67, ptr %11, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 24, ptr %17) #5
  call void @llvm.lifetime.start.p0(i64 12, ptr %19) #5
  %68 = load ptr, ptr %10, align 8, !tbaa !9
  %69 = load i32, ptr %14, align 4, !tbaa !5
  %70 = sext i32 %69 to i64
  %71 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %68, i64 noundef %70) #5
  %72 = load i32, ptr %16, align 4, !tbaa !5
  %73 = sext i32 %72 to i64
  %74 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %71, i64 noundef %73) #5
  %75 = load i32, ptr %74, align 4, !tbaa !5
  store i32 %75, ptr %19, align 4, !tbaa !5
  %76 = getelementptr inbounds i32, ptr %19, i64 1
  %77 = load i32, ptr %14, align 4, !tbaa !5
  store i32 %77, ptr %76, align 4, !tbaa !5
  %78 = getelementptr inbounds i32, ptr %19, i64 2
  %79 = load i32, ptr %16, align 4, !tbaa !5
  store i32 %79, ptr %78, align 4, !tbaa !5
  %80 = getelementptr inbounds %"class.std::initializer_list", ptr %18, i32 0, i32 0
  store ptr %19, ptr %80, align 8, !tbaa !11
  %81 = getelementptr inbounds %"class.std::initializer_list", ptr %18, i32 0, i32 1
  store i64 3, ptr %81, align 8, !tbaa !14
  call void @llvm.lifetime.start.p0(i64 1, ptr %20) #5
  call void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %20) #5
  %82 = getelementptr inbounds { ptr, i64 }, ptr %18, i32 0, i32 0
  %83 = load ptr, ptr %82, align 8
  %84 = getelementptr inbounds { ptr, i64 }, ptr %18, i32 0, i32 1
  %85 = load i64, ptr %84, align 8
  invoke void @_ZNSt6vectorIiSaIiEEC2ESt16initializer_listIiERKS0_(ptr noundef nonnull align 8 dereferenceable(24) %17, ptr %83, i64 %85, ptr noundef nonnull align 1 dereferenceable(1) %20)
          to label %86 unwind label %88

86:                                               ; preds = %57
  invoke void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %13, ptr noundef nonnull align 8 dereferenceable(24) %17)
          to label %87 unwind label %92

87:                                               ; preds = %86
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %17) #5
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %20) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %20) #5
  call void @llvm.lifetime.end.p0(i64 12, ptr %19) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr %17) #5
  br label %97

88:                                               ; preds = %57
  %89 = landingpad { ptr, i32 }
          cleanup
  %90 = extractvalue { ptr, i32 } %89, 0
  store ptr %90, ptr %21, align 8
  %91 = extractvalue { ptr, i32 } %89, 1
  store i32 %91, ptr %22, align 4
  br label %96

92:                                               ; preds = %86
  %93 = landingpad { ptr, i32 }
          cleanup
  %94 = extractvalue { ptr, i32 } %93, 0
  store ptr %94, ptr %21, align 8
  %95 = extractvalue { ptr, i32 } %93, 1
  store i32 %95, ptr %22, align 4
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %17) #5
  br label %96

96:                                               ; preds = %92, %88
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %20) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr %20) #5
  call void @llvm.lifetime.end.p0(i64 12, ptr %19) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr %17) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %16) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #5
  br label %160

97:                                               ; preds = %87, %47
  br label %98

98:                                               ; preds = %97
  %99 = load i32, ptr %16, align 4, !tbaa !5
  %100 = add nsw i32 %99, 1
  store i32 %100, ptr %16, align 4, !tbaa !5
  br label %42, !llvm.loop !15

101:                                              ; preds = %46
  br label %102

102:                                              ; preds = %101
  %103 = load i32, ptr %14, align 4, !tbaa !5
  %104 = add nsw i32 %103, 1
  store i32 %104, ptr %14, align 4, !tbaa !5
  br label %36, !llvm.loop !17

105:                                              ; preds = %40
  call void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE6rbeginEv(ptr dead_on_unwind writable sret(%"class.std::reverse_iterator") align 8 %23, ptr noundef nonnull align 8 dereferenceable(24) %13) #5
  call void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE4rendEv(ptr dead_on_unwind writable sret(%"class.std::reverse_iterator") align 8 %24, ptr noundef nonnull align 8 dereferenceable(24) %13) #5
  invoke void @_ZSt4sortISt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPSt6vectorIiSaIiEES3_IS5_SaIS5_EEEEEEvT_SB_(ptr noundef %23, ptr noundef %24)
          to label %106 unwind label %116

106:                                              ; preds = %105
  call void @llvm.lifetime.start.p0(i64 8, ptr %25) #5
  store ptr %13, ptr %25, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %26) #5
  %107 = load ptr, ptr %25, align 8, !tbaa !9
  %108 = call ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %107) #5
  %109 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %26, i32 0, i32 0
  store ptr %108, ptr %109, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %27) #5
  %110 = load ptr, ptr %25, align 8, !tbaa !9
  %111 = call ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %110) #5
  %112 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %27, i32 0, i32 0
  store ptr %111, ptr %112, align 8
  br label %113

113:                                              ; preds = %156, %106
  %114 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt6vectorIiSaIiEES1_IS3_SaIS3_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %26, ptr noundef nonnull align 8 dereferenceable(8) %27) #5
  br i1 %114, label %120, label %115

115:                                              ; preds = %113
  store i32 8, ptr %15, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %27) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %26) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %25) #5
  br label %158

116:                                              ; preds = %105
  %117 = landingpad { ptr, i32 }
          cleanup
  %118 = extractvalue { ptr, i32 } %117, 0
  store ptr %118, ptr %21, align 8
  %119 = extractvalue { ptr, i32 } %117, 1
  store i32 %119, ptr %22, align 4
  br label %160

120:                                              ; preds = %113
  call void @llvm.lifetime.start.p0(i64 8, ptr %28) #5
  %121 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt6vectorIiSaIiEES1_IS3_SaIS3_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %26) #5
  store ptr %121, ptr %28, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %29) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %30) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %31) #5
  call void @llvm.lifetime.start.p0(i64 24, ptr %32) #5
  %122 = load ptr, ptr %28, align 8, !tbaa !9
  %123 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %122, i64 noundef 0) #5
  %124 = load ptr, ptr %28, align 8, !tbaa !9
  %125 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %124, i64 noundef 1) #5
  %126 = load ptr, ptr %28, align 8, !tbaa !9
  %127 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %126, i64 noundef 2) #5
  call void @_ZNSt5tupleIJRiS0_S0_EEC2ILb1ETnNSt9enable_ifIXclsr4_TCCIXT_EEE29__is_implicitly_constructibleIS0_S0_S0_EEEbE4typeELb1EEES0_S0_S0_(ptr noundef nonnull align 8 dereferenceable(24) %32, ptr noundef nonnull align 4 dereferenceable(4) %123, ptr noundef nonnull align 4 dereferenceable(4) %125, ptr noundef nonnull align 4 dereferenceable(4) %127) #5
  call void @llvm.lifetime.start.p0(i64 24, ptr %33) #5
  call void @_ZSt3tieIJiiiEESt5tupleIJDpRT_EES3_(ptr dead_on_unwind writable sret(%"class.std::tuple") align 8 %33, ptr noundef nonnull align 4 dereferenceable(4) %29, ptr noundef nonnull align 4 dereferenceable(4) %30, ptr noundef nonnull align 4 dereferenceable(4) %31) #5
  %128 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt5tupleIJRiS0_S0_EEaSEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %33, ptr noundef nonnull align 8 dereferenceable(24) %32) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr %33) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr %32) #5
  %129 = load i32, ptr %30, align 4, !tbaa !5
  %130 = load i32, ptr %6, align 4, !tbaa !5
  %131 = load i32, ptr %31, align 4, !tbaa !5
  %132 = add nsw i32 %130, %131
  %133 = invoke noundef zeroext i1 @_ZN9UnionFind4sameEii(ptr noundef nonnull align 8 dereferenceable(48) %12, i32 noundef %129, i32 noundef %132)
          to label %134 unwind label %151

134:                                              ; preds = %120
  br i1 %133, label %155, label %135

135:                                              ; preds = %134
  %136 = load i32, ptr %30, align 4, !tbaa !5
  %137 = load i32, ptr %6, align 4, !tbaa !5
  %138 = load i32, ptr %31, align 4, !tbaa !5
  %139 = add nsw i32 %137, %138
  invoke void @_ZN9UnionFind5unifyEii(ptr noundef nonnull align 8 dereferenceable(48) %12, i32 noundef %136, i32 noundef %139)
          to label %140 unwind label %151

140:                                              ; preds = %135
  %141 = load ptr, ptr %10, align 8, !tbaa !9
  %142 = load i32, ptr %30, align 4, !tbaa !5
  %143 = sext i32 %142 to i64
  %144 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %141, i64 noundef %143) #5
  %145 = load i32, ptr %31, align 4, !tbaa !5
  %146 = sext i32 %145 to i64
  %147 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %144, i64 noundef %146) #5
  %148 = load i32, ptr %147, align 4, !tbaa !5
  %149 = load i32, ptr %11, align 4, !tbaa !5
  %150 = sub nsw i32 %149, %148
  store i32 %150, ptr %11, align 4, !tbaa !5
  br label %155

151:                                              ; preds = %135, %120
  %152 = landingpad { ptr, i32 }
          cleanup
  %153 = extractvalue { ptr, i32 } %152, 0
  store ptr %153, ptr %21, align 8
  %154 = extractvalue { ptr, i32 } %152, 1
  store i32 %154, ptr %22, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %31) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %30) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %29) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %28) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %27) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %26) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %25) #5
  br label %160

155:                                              ; preds = %140, %134
  call void @llvm.lifetime.end.p0(i64 4, ptr %31) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %30) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %29) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %28) #5
  br label %156

156:                                              ; preds = %155
  %157 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt6vectorIiSaIiEES1_IS3_SaIS3_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %26) #5
  br label %113

158:                                              ; preds = %115
  %159 = load i32, ptr %11, align 4, !tbaa !5
  store i32 1, ptr %15, align 4
  call void @_ZNSt6vectorIS_IiSaIiEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %13) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr %13) #5
  call void @_ZN9UnionFindD2Ev(ptr noundef nonnull align 8 dereferenceable(48) %12) #5
  call void @llvm.lifetime.end.p0(i64 48, ptr %12) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #5
  ret i32 %159

160:                                              ; preds = %151, %116, %96
  call void @_ZNSt6vectorIS_IiSaIiEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %13) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr %13) #5
  call void @_ZN9UnionFindD2Ev(ptr noundef nonnull align 8 dereferenceable(48) %12) #5
  call void @llvm.lifetime.end.p0(i64 48, ptr %12) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #5
  br label %161

161:                                              ; preds = %160
  %162 = load ptr, ptr %21, align 8
  %163 = load i32, ptr %22, align 4
  %164 = insertvalue { ptr, i32 } poison, ptr %162, 0
  %165 = insertvalue { ptr, i32 } %164, i32 %163, 1
  resume { ptr, i32 } %165
}

; 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 void @_ZN9UnionFindC2Ei(ptr noundef nonnull align 8 dereferenceable(48), i32 noundef) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE9push_backEOS1_(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 void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2ESt16initializer_listIiERKS0_(ptr noundef nonnull align 8 dereferenceable(24), ptr, i64, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 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 uwtable
declare dso_local void @_ZSt4sortISt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPSt6vectorIiSaIiEES3_IS5_SaIS5_EEEEEEvT_SB_(ptr noundef, ptr noundef) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE6rbeginEv(ptr dead_on_unwind noalias writable sret(%"class.std::reverse_iterator") align 8, ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE4rendEv(ptr dead_on_unwind noalias writable sret(%"class.std::reverse_iterator") align 8, ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPSt6vectorIiSaIiEES1_IS3_SaIS3_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt6vectorIiSaIiEES1_IS3_SaIS3_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5tupleIJRiS0_S0_EEC2ILb1ETnNSt9enable_ifIXclsr4_TCCIXT_EEE29__is_implicitly_constructibleIS0_S0_S0_EEEbE4typeELb1EEES0_S0_S0_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZSt3tieIJiiiEESt5tupleIJDpRT_EES3_(ptr dead_on_unwind noalias writable sret(%"class.std::tuple") align 8, ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt5tupleIJRiS0_S0_EEaSEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZN9UnionFind4sameEii(ptr noundef nonnull align 8 dereferenceable(48), i32 noundef, i32 noundef) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN9UnionFind5unifyEii(ptr noundef nonnull align 8 dereferenceable(48), i32 noundef, i32 noundef) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt6vectorIiSaIiEES1_IS3_SaIS3_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN9UnionFindD2Ev(ptr noundef nonnull align 8 dereferenceable(48)) unnamed_addr #4 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 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 = { 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 #5 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"_ZTSSt16initializer_listIiE", !10, i64 0, !13, i64 8}
!13 = !{!"long", !7, i64 0}
!14 = !{!12, !13, i64 8}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}
!17 = distinct !{!17, !16}


; 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.UnionFind = type { %"class.std::vector", %"class.std::vector" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<int>, std::allocator<std::vector<int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator" = type { i8 }
%"class.std::reverse_iterator" = type { %"class.__gnu_cxx::__normal_iterator" }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%"class.std::tuple" = type { %"struct.std::_Tuple_impl" }
%"struct.std::_Tuple_impl" = type { %"struct.std::_Tuple_impl.5", %"struct.std::_Head_base.8" }
%"struct.std::_Tuple_impl.5" = type { %"struct.std::_Tuple_impl.6", %"struct.std::_Head_base.7" }
%"struct.std::_Tuple_impl.6" = type { %"struct.std::_Head_base" }
%"struct.std::_Head_base" = type { ptr }
%"struct.std::_Head_base.7" = type { ptr }
%"struct.std::_Head_base.8" = type { ptr }

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z8checksumiRSt6vectorIiSaIiEES2_RS_IS1_SaIS1_EES5_(i32 noundef %0, ptr nocapture noundef nonnull readnone align 8 dereferenceable(24) %1, ptr nocapture noundef nonnull readnone align 8 dereferenceable(24) %2, ptr noundef nonnull align 8 dereferenceable(24) %3, ptr noundef nonnull align 8 dereferenceable(24) %4) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %6 = alloca %class.UnionFind, align 8
  %7 = alloca %"class.std::vector.0", align 8
  %8 = alloca %"class.std::vector", align 8
  %9 = alloca [3 x i32], align 4
  %10 = alloca %"class.std::allocator", align 1
  %11 = alloca %"class.std::reverse_iterator", align 8
  %12 = alloca %"class.std::reverse_iterator", align 8
  %13 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %14 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %15 = alloca i32, align 4
  %16 = alloca i32, align 4
  %17 = alloca i32, align 4
  %18 = alloca %"class.std::tuple", align 8
  %19 = alloca %"class.std::tuple", align 8
  call void @llvm.lifetime.start.p0(i64 48, ptr nonnull %6) #5
  %20 = shl nsw i32 %0, 1
  call void @_ZN9UnionFindC2Ei(ptr noundef nonnull align 8 dereferenceable(48) %6, i32 noundef %20)
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %7) #5
  call void @_ZNSt6vectorIS_IiSaIiEESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #5
  %21 = icmp sgt i32 %0, 0
  br i1 %21, label %.preheader.lr.ph, label %._crit_edge49

.preheader.lr.ph:                                 ; preds = %5
  %22 = getelementptr inbounds i8, ptr %9, i64 4
  %23 = getelementptr inbounds i8, ptr %9, i64 8
  %wide.trip.count60 = zext nneg i32 %0 to i64
  br label %.preheader.us

.preheader.us:                                    ; preds = %._crit_edge.us, %.preheader.lr.ph
  %indvars.iv57 = phi i64 [ %indvars.iv.next58, %._crit_edge.us ], [ 0, %.preheader.lr.ph ]
  %.048.us = phi i32 [ %.2.us, %._crit_edge.us ], [ 0, %.preheader.lr.ph ]
  %24 = trunc nuw nsw i64 %indvars.iv57 to i32
  br label %25

25:                                               ; preds = %.preheader.us, %41
  %indvars.iv = phi i64 [ 0, %.preheader.us ], [ %indvars.iv.next, %41 ]
  %.146.us = phi i32 [ %.048.us, %.preheader.us ], [ %.2.us, %41 ]
  %26 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %indvars.iv57) #5
  %27 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %26, i64 noundef %indvars.iv) #5
  %28 = load i32, ptr %27, align 4, !tbaa !5
  %29 = icmp eq i32 %28, -1
  br i1 %29, label %30, label %41

30:                                               ; preds = %25
  %31 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %indvars.iv57) #5
  %32 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %31, i64 noundef %indvars.iv) #5
  %33 = load i32, ptr %32, align 4, !tbaa !5
  %34 = add nsw i32 %33, %.146.us
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %8) #5
  call void @llvm.lifetime.start.p0(i64 12, ptr nonnull %9) #5
  %35 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %indvars.iv57) #5
  %36 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %35, i64 noundef %indvars.iv) #5
  %37 = load i32, ptr %36, align 4, !tbaa !5
  store i32 %37, ptr %9, align 4, !tbaa !5
  store i32 %24, ptr %22, align 4, !tbaa !5
  %38 = trunc nuw nsw i64 %indvars.iv to i32
  store i32 %38, ptr %23, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %10) #5
  call void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %10) #5
  invoke void @_ZNSt6vectorIiSaIiEEC2ESt16initializer_listIiERKS0_(ptr noundef nonnull align 8 dereferenceable(24) %8, ptr nonnull %9, i64 3, ptr noundef nonnull align 1 dereferenceable(1) %10)
          to label %39 unwind label %.split.us

39:                                               ; preds = %30
  invoke void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %7, ptr noundef nonnull align 8 dereferenceable(24) %8)
          to label %40 unwind label %.split53.us

40:                                               ; preds = %39
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %8) #5
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %10) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %10) #5
  call void @llvm.lifetime.end.p0(i64 12, ptr nonnull %9) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %8) #5
  br label %41

41:                                               ; preds = %40, %25
  %.2.us = phi i32 [ %34, %40 ], [ %.146.us, %25 ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count60
  br i1 %exitcond.not, label %._crit_edge.us, label %25, !llvm.loop !9

._crit_edge.us:                                   ; preds = %41
  %indvars.iv.next58 = add nuw nsw i64 %indvars.iv57, 1
  %exitcond61.not = icmp eq i64 %indvars.iv.next58, %wide.trip.count60
  br i1 %exitcond61.not, label %._crit_edge49, label %.preheader.us, !llvm.loop !11

.split.us:                                        ; preds = %30
  %42 = landingpad { ptr, i32 }
          cleanup
  br label %44

.split53.us:                                      ; preds = %39
  %43 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %8) #5
  br label %44

._crit_edge49:                                    ; preds = %._crit_edge.us, %5
  %.0.lcssa = phi i32 [ 0, %5 ], [ %.2.us, %._crit_edge.us ]
  call void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE6rbeginEv(ptr dead_on_unwind nonnull writable sret(%"class.std::reverse_iterator") align 8 %11, ptr noundef nonnull align 8 dereferenceable(24) %7) #5
  call void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE4rendEv(ptr dead_on_unwind nonnull writable sret(%"class.std::reverse_iterator") align 8 %12, ptr noundef nonnull align 8 dereferenceable(24) %7) #5
  invoke void @_ZSt4sortISt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPSt6vectorIiSaIiEES3_IS5_SaIS5_EEEEEEvT_SB_(ptr noundef nonnull %11, ptr noundef nonnull %12)
          to label %45 unwind label %49

44:                                               ; preds = %.split53.us, %.split.us
  %.pn = phi { ptr, i32 } [ %43, %.split53.us ], [ %42, %.split.us ]
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %10) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %10) #5
  call void @llvm.lifetime.end.p0(i64 12, ptr nonnull %9) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %8) #5
  br label %78

45:                                               ; preds = %._crit_edge49
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %13) #5
  %46 = call ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %7) #5
  store ptr %46, ptr %13, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %14) #5
  %47 = call ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %7) #5
  store ptr %47, ptr %14, align 8
  %48 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt6vectorIiSaIiEES1_IS3_SaIS3_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %13, ptr noundef nonnull align 8 dereferenceable(8) %14) #5
  br i1 %48, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %75, %45
  %.3.lcssa = phi i32 [ %.0.lcssa, %45 ], [ %.4, %75 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %14) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %13) #5
  call void @_ZNSt6vectorIS_IiSaIiEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %7) #5
  call void @_ZN9UnionFindD2Ev(ptr noundef nonnull align 8 dereferenceable(48) %6) #5
  call void @llvm.lifetime.end.p0(i64 48, ptr nonnull %6) #5
  ret i32 %.3.lcssa

49:                                               ; preds = %._crit_edge49
  %50 = landingpad { ptr, i32 }
          cleanup
  br label %78

.lr.ph:                                           ; preds = %45, %75
  %.355 = phi i32 [ %.4, %75 ], [ %.0.lcssa, %45 ]
  %51 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt6vectorIiSaIiEES1_IS3_SaIS3_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %13) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %15) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %16) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %17) #5
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %18) #5
  %52 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %51, i64 noundef 0) #5
  %53 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %51, i64 noundef 1) #5
  %54 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %51, i64 noundef 2) #5
  call void @_ZNSt5tupleIJRiS0_S0_EEC2ILb1ETnNSt9enable_ifIXclsr4_TCCIXT_EEE29__is_implicitly_constructibleIS0_S0_S0_EEEbE4typeELb1EEES0_S0_S0_(ptr noundef nonnull align 8 dereferenceable(24) %18, ptr noundef nonnull align 4 dereferenceable(4) %52, ptr noundef nonnull align 4 dereferenceable(4) %53, ptr noundef nonnull align 4 dereferenceable(4) %54) #5
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %19) #5
  call void @_ZSt3tieIJiiiEESt5tupleIJDpRT_EES3_(ptr dead_on_unwind nonnull writable sret(%"class.std::tuple") align 8 %19, ptr noundef nonnull align 4 dereferenceable(4) %15, ptr noundef nonnull align 4 dereferenceable(4) %16, ptr noundef nonnull align 4 dereferenceable(4) %17) #5
  %55 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt5tupleIJRiS0_S0_EEaSEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %19, ptr noundef nonnull align 8 dereferenceable(24) %18) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %19) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %18) #5
  %56 = load i32, ptr %16, align 4, !tbaa !5
  %57 = load i32, ptr %17, align 4, !tbaa !5
  %58 = add nsw i32 %57, %0
  %59 = invoke noundef zeroext i1 @_ZN9UnionFind4sameEii(ptr noundef nonnull align 8 dereferenceable(48) %6, i32 noundef %56, i32 noundef %58)
          to label %60 unwind label %73

60:                                               ; preds = %.lr.ph
  br i1 %59, label %75, label %61

61:                                               ; preds = %60
  %62 = load i32, ptr %16, align 4, !tbaa !5
  %63 = load i32, ptr %17, align 4, !tbaa !5
  %64 = add nsw i32 %63, %0
  call void @_ZN9UnionFind5unifyEii(ptr noundef nonnull align 8 dereferenceable(48) %6, i32 noundef %62, i32 noundef %64)
  %65 = load i32, ptr %16, align 4, !tbaa !5
  %66 = sext i32 %65 to i64
  %67 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %66) #5
  %68 = load i32, ptr %17, align 4, !tbaa !5
  %69 = sext i32 %68 to i64
  %70 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %67, i64 noundef %69) #5
  %71 = load i32, ptr %70, align 4, !tbaa !5
  %72 = sub nsw i32 %.355, %71
  br label %75

73:                                               ; preds = %.lr.ph
  %74 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %17) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %16) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %15) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %14) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %13) #5
  br label %78

75:                                               ; preds = %61, %60
  %.4 = phi i32 [ %.355, %60 ], [ %72, %61 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %17) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %16) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %15) #5
  %76 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt6vectorIiSaIiEES1_IS3_SaIS3_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %13) #5
  %77 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt6vectorIiSaIiEES1_IS3_SaIS3_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %13, ptr noundef nonnull align 8 dereferenceable(8) %14) #5
  br i1 %77, label %.lr.ph, label %._crit_edge

78:                                               ; preds = %73, %49, %44
  %.pn.pn = phi { ptr, i32 } [ %.pn, %44 ], [ %74, %73 ], [ %50, %49 ]
  call void @_ZNSt6vectorIS_IiSaIiEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %7) #5
  call void @_ZN9UnionFindD2Ev(ptr noundef nonnull align 8 dereferenceable(48) %6) #5
  call void @llvm.lifetime.end.p0(i64 48, ptr nonnull %6) #5
  resume { ptr, i32 } %.pn.pn
}

; 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 void @_ZN9UnionFindC2Ei(ptr noundef nonnull align 8 dereferenceable(48), i32 noundef) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE9push_backEOS1_(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 void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2ESt16initializer_listIiERKS0_(ptr noundef nonnull align 8 dereferenceable(24), ptr, i64, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

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

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortISt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPSt6vectorIiSaIiEES3_IS5_SaIS5_EEEEEEvT_SB_(ptr noundef, ptr noundef) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE6rbeginEv(ptr dead_on_unwind noalias writable sret(%"class.std::reverse_iterator") align 8, ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE4rendEv(ptr dead_on_unwind noalias writable sret(%"class.std::reverse_iterator") align 8, ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPSt6vectorIiSaIiEES1_IS3_SaIS3_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt6vectorIiSaIiEES1_IS3_SaIS3_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5tupleIJRiS0_S0_EEC2ILb1ETnNSt9enable_ifIXclsr4_TCCIXT_EEE29__is_implicitly_constructibleIS0_S0_S0_EEEbE4typeELb1EEES0_S0_S0_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZSt3tieIJiiiEESt5tupleIJDpRT_EES3_(ptr dead_on_unwind noalias writable sret(%"class.std::tuple") align 8, ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt5tupleIJRiS0_S0_EEaSEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZN9UnionFind4sameEii(ptr noundef nonnull align 8 dereferenceable(48), i32 noundef, i32 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN9UnionFind5unifyEii(ptr noundef nonnull align 8 dereferenceable(48), i32 noundef, i32 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt6vectorIiSaIiEES1_IS3_SaIS3_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN9UnionFindD2Ev(ptr noundef nonnull align 8 dereferenceable(48)) unnamed_addr #4 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 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 = { 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 #5 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


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