; LLVM IR from duc0/ContestNeko :: CPPProjects (CentroidDecomposition)

; 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::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%class.WeightedTree = type { %"class.std::vector", %"class.std::vector.0", %"class.std::vector.5", i32, i32 }
%"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 }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = 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 }
%"class.std::vector.5" = type { %"struct.std::_Vector_base.6" }
%"struct.std::_Vector_base.6" = 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.CentroidDecomposition = type { ptr, %"class.std::vector.5", i32, %"class.std::vector.10", i32, %"class.std::vector.5" }
%"class.std::vector.10" = type { %"struct.std::_Bvector_base" }
%"struct.std::_Bvector_base" = type { %"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl" }
%"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl" = type { %"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl_data" }
%"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl_data" = type { %"struct.std::_Bit_iterator", %"struct.std::_Bit_iterator", ptr }
%"struct.std::_Bit_iterator" = type { %"struct.std::_Bit_iterator_base.base", [4 x i8] }
%"struct.std::_Bit_iterator_base.base" = type <{ ptr, i32 }>

@.str = external hidden unnamed_addr constant [14 x i8], align 1
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [2 x i8], align 1
@stdin = external global ptr, align 8
@_ZSt3cin = external global %"class.std::basic_istream", align 8

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

declare ptr @freopen(ptr noundef, ptr noundef, ptr noundef) #1

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #1

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #3

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #3

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #4 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca %class.WeightedTree, align 8
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca %class.CentroidDecomposition, align 8
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %12 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %13 = load ptr, ptr @stdin, align 8, !tbaa !5
  %14 = call ptr @freopen(ptr noundef @.str, ptr noundef @.str.3, ptr noundef %13)
  call void @llvm.lifetime.start.p0(i64 80, ptr %2) #7
  call void @_ZN12WeightedTreeIiEC2Ev(ptr noundef nonnull align 8 dereferenceable(80) %2)
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #7
  %15 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %3)
          to label %16 unwind label %25

16:                                               ; preds = %0
  %17 = load i32, ptr %3, align 4, !tbaa !9
  invoke void @_ZN12WeightedTreeIiE5resetEi(ptr noundef nonnull align 8 dereferenceable(80) %2, i32 noundef %17)
          to label %18 unwind label %25

18:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #7
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %19

19:                                               ; preds = %37, %18
  %20 = load i32, ptr %6, align 4, !tbaa !9
  %21 = load i32, ptr %3, align 4, !tbaa !9
  %22 = sub nsw i32 %21, 1
  %23 = icmp slt i32 %20, %22
  br i1 %23, label %29, label %24

24:                                               ; preds = %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #7
  br label %44

25:                                               ; preds = %44, %16, %0
  %26 = landingpad { ptr, i32 }
          cleanup
  %27 = extractvalue { ptr, i32 } %26, 0
  store ptr %27, ptr %4, align 8
  %28 = extractvalue { ptr, i32 } %26, 1
  store i32 %28, ptr %5, align 4
  br label %99

29:                                               ; preds = %19
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #7
  %30 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %7)
          to label %31 unwind label %40

31:                                               ; preds = %29
  %32 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %30, ptr noundef nonnull align 4 dereferenceable(4) %8)
          to label %33 unwind label %40

33:                                               ; preds = %31
  %34 = load i32, ptr %7, align 4, !tbaa !9
  %35 = load i32, ptr %8, align 4, !tbaa !9
  invoke void @_ZN12WeightedTreeIiE7addEdgeEiii(ptr noundef nonnull align 8 dereferenceable(80) %2, i32 noundef %34, i32 noundef %35, i32 noundef 1)
          to label %36 unwind label %40

36:                                               ; preds = %33
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #7
  br label %37

37:                                               ; preds = %36
  %38 = load i32, ptr %6, align 4, !tbaa !9
  %39 = add nsw i32 %38, 1
  store i32 %39, ptr %6, align 4, !tbaa !9
  br label %19, !llvm.loop !11

40:                                               ; preds = %33, %31, %29
  %41 = landingpad { ptr, i32 }
          cleanup
  %42 = extractvalue { ptr, i32 } %41, 0
  store ptr %42, ptr %4, align 8
  %43 = extractvalue { ptr, i32 } %41, 1
  store i32 %43, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #7
  br label %99

44:                                               ; preds = %24
  invoke void @_ZN12WeightedTreeIiE7setRootEi(ptr noundef nonnull align 8 dereferenceable(80) %2, i32 noundef 1)
          to label %45 unwind label %25

45:                                               ; preds = %44
  call void @llvm.lifetime.start.p0(i64 112, ptr %9) #7
  invoke void @_ZN21CentroidDecompositionIiEC2ERK12WeightedTreeIiE(ptr noundef nonnull align 8 dereferenceable(112) %9, ptr noundef nonnull align 8 dereferenceable(80) %2)
          to label %46 unwind label %52

46:                                               ; preds = %45
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #7
  store i32 1, ptr %10, align 4, !tbaa !9
  br label %47

47:                                               ; preds = %64, %46
  %48 = load i32, ptr %10, align 4, !tbaa !9
  %49 = load i32, ptr %3, align 4, !tbaa !9
  %50 = icmp sle i32 %48, %49
  br i1 %50, label %56, label %51

51:                                               ; preds = %47
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #7
  br label %71

52:                                               ; preds = %45
  %53 = landingpad { ptr, i32 }
          cleanup
  %54 = extractvalue { ptr, i32 } %53, 0
  store ptr %54, ptr %4, align 8
  %55 = extractvalue { ptr, i32 } %53, 1
  store i32 %55, ptr %5, align 4
  br label %98

56:                                               ; preds = %47
  %57 = load i32, ptr %10, align 4, !tbaa !9
  %58 = invoke noundef i32 @_ZNK21CentroidDecompositionIiE8getLabelEi(ptr noundef nonnull align 8 dereferenceable(112) %9, i32 noundef %57)
          to label %59 unwind label %67

59:                                               ; preds = %56
  %60 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %58)
          to label %61 unwind label %67

61:                                               ; preds = %59
  %62 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %60, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %63 unwind label %67

63:                                               ; preds = %61
  br label %64

64:                                               ; preds = %63
  %65 = load i32, ptr %10, align 4, !tbaa !9
  %66 = add nsw i32 %65, 1
  store i32 %66, ptr %10, align 4, !tbaa !9
  br label %47, !llvm.loop !13

67:                                               ; preds = %61, %59, %56
  %68 = landingpad { ptr, i32 }
          cleanup
  %69 = extractvalue { ptr, i32 } %68, 0
  store ptr %69, ptr %4, align 8
  %70 = extractvalue { ptr, i32 } %68, 1
  store i32 %70, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #7
  br label %97

71:                                               ; preds = %51
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #7
  store i32 1, ptr %11, align 4, !tbaa !9
  br label %72

72:                                               ; preds = %88, %71
  %73 = load i32, ptr %11, align 4, !tbaa !9
  %74 = load i32, ptr %3, align 4, !tbaa !9
  %75 = icmp sle i32 %73, %74
  br i1 %75, label %77, label %76

76:                                               ; preds = %72
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #7
  br label %95

77:                                               ; preds = %72
  %78 = load i32, ptr %11, align 4, !tbaa !9
  %79 = invoke noundef i32 @_ZNK21CentroidDecompositionIiE8getLabelEi(ptr noundef nonnull align 8 dereferenceable(112) %9, i32 noundef %78)
          to label %80 unwind label %91

80:                                               ; preds = %77
  %81 = sub nsw i32 %79, 1
  %82 = add nsw i32 %81, 65
  %83 = trunc i32 %82 to i8
  %84 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i8 noundef signext %83)
          to label %85 unwind label %91

85:                                               ; preds = %80
  %86 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %84, ptr noundef @.str.2)
          to label %87 unwind label %91

87:                                               ; preds = %85
  br label %88

88:                                               ; preds = %87
  %89 = load i32, ptr %11, align 4, !tbaa !9
  %90 = add nsw i32 %89, 1
  store i32 %90, ptr %11, align 4, !tbaa !9
  br label %72, !llvm.loop !14

91:                                               ; preds = %85, %80, %77
  %92 = landingpad { ptr, i32 }
          cleanup
  %93 = extractvalue { ptr, i32 } %92, 0
  store ptr %93, ptr %4, align 8
  %94 = extractvalue { ptr, i32 } %92, 1
  store i32 %94, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #7
  br label %97

95:                                               ; preds = %76
  store i32 0, ptr %1, align 4
  call void @_ZN21CentroidDecompositionIiED2Ev(ptr noundef nonnull align 8 dereferenceable(112) %9) #7
  call void @llvm.lifetime.end.p0(i64 112, ptr %9) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #7
  call void @_ZN12WeightedTreeIiED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %2) #7
  call void @llvm.lifetime.end.p0(i64 80, ptr %2) #7
  %96 = load i32, ptr %1, align 4
  ret i32 %96

97:                                               ; preds = %91, %67
  call void @_ZN21CentroidDecompositionIiED2Ev(ptr noundef nonnull align 8 dereferenceable(112) %9) #7
  br label %98

98:                                               ; preds = %97, %52
  call void @llvm.lifetime.end.p0(i64 112, ptr %9) #7
  br label %99

99:                                               ; preds = %98, %40, %25
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #7
  call void @_ZN12WeightedTreeIiED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %2) #7
  call void @llvm.lifetime.end.p0(i64 80, ptr %2) #7
  br label %100

100:                                              ; preds = %99
  %101 = load ptr, ptr %4, align 8
  %102 = load i32, ptr %5, align 4
  %103 = insertvalue { ptr, i32 } poison, ptr %101, 0
  %104 = insertvalue { ptr, i32 } %103, i32 %102, 1
  resume { ptr, i32 } %104
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN12WeightedTreeIiEC2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #5 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #1

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN12WeightedTreeIiE5resetEi(ptr noundef nonnull align 8 dereferenceable(80), i32 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN12WeightedTreeIiE7addEdgeEiii(ptr noundef nonnull align 8 dereferenceable(80), i32 noundef, i32 noundef, i32 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN12WeightedTreeIiE7setRootEi(ptr noundef nonnull align 8 dereferenceable(80), i32 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN21CentroidDecompositionIiEC2ERK12WeightedTreeIiE(ptr noundef nonnull align 8 dereferenceable(112), ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZNK21CentroidDecompositionIiE8getLabelEi(ptr noundef nonnull align 8 dereferenceable(112), i32 noundef) #5 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8), i8 noundef signext) #3

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN21CentroidDecompositionIiED2Ev(ptr noundef nonnull align 8 dereferenceable(112)) unnamed_addr #6 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN12WeightedTreeIiED2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #6 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "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 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 = { mustprogress norecurse 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 = { 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 #6 = { 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 #7 = { 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 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !12}


; 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::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%class.WeightedTree = type { %"class.std::vector", %"class.std::vector.0", %"class.std::vector.5", i32, i32 }
%"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 }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = 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 }
%"class.std::vector.5" = type { %"struct.std::_Vector_base.6" }
%"struct.std::_Vector_base.6" = 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.CentroidDecomposition = type { ptr, %"class.std::vector.5", i32, %"class.std::vector.10", i32, %"class.std::vector.5" }
%"class.std::vector.10" = type { %"struct.std::_Bvector_base" }
%"struct.std::_Bvector_base" = type { %"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl" }
%"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl" = type { %"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl_data" }
%"struct.std::_Bvector_base<std::allocator<bool>>::_Bvector_impl_data" = type { %"struct.std::_Bit_iterator", %"struct.std::_Bit_iterator", ptr }
%"struct.std::_Bit_iterator" = type { %"struct.std::_Bit_iterator_base.base", [4 x i8] }
%"struct.std::_Bit_iterator_base.base" = type <{ ptr, i32 }>

@.str = external hidden unnamed_addr constant [14 x i8], align 1
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [2 x i8], align 1
@stdin = external local_unnamed_addr global ptr, align 8
@_ZSt3cin = external global %"class.std::basic_istream", align 8

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

declare ptr @freopen(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #1

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

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #3

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #3

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #4 personality ptr @__gxx_personality_v0 {
  %1 = alloca %class.WeightedTree, align 8
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca %class.CentroidDecomposition, align 8
  %6 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %7 = load ptr, ptr @stdin, align 8, !tbaa !5
  %8 = tail call ptr @freopen(ptr noundef nonnull @.str, ptr noundef nonnull @.str.3, ptr noundef %7)
  call void @llvm.lifetime.start.p0(i64 80, ptr nonnull %1) #7
  call void @_ZN12WeightedTreeIiEC2Ev(ptr noundef nonnull align 8 dereferenceable(80) %1)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #7
  %9 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
          to label %10 unwind label %14

10:                                               ; preds = %0
  %11 = load i32, ptr %2, align 4, !tbaa !9
  invoke void @_ZN12WeightedTreeIiE5resetEi(ptr noundef nonnull align 8 dereferenceable(80) %1, i32 noundef %11)
          to label %.preheader22 unwind label %14

.preheader22:                                     ; preds = %10
  %12 = load i32, ptr %2, align 4, !tbaa !9
  %13 = icmp sgt i32 %12, 1
  br i1 %13, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %22, %.preheader22
  invoke void @_ZN12WeightedTreeIiE7setRootEi(ptr noundef nonnull align 8 dereferenceable(80) %1, i32 noundef 1)
          to label %29 unwind label %14

14:                                               ; preds = %._crit_edge, %10, %0
  %15 = landingpad { ptr, i32 }
          cleanup
  br label %56

.lr.ph:                                           ; preds = %.preheader22, %22
  %.01123 = phi i32 [ %23, %22 ], [ 0, %.preheader22 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #7
  %16 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %3)
          to label %17 unwind label %27

17:                                               ; preds = %.lr.ph
  %18 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %16, ptr noundef nonnull align 4 dereferenceable(4) %4)
          to label %19 unwind label %27

19:                                               ; preds = %17
  %20 = load i32, ptr %3, align 4, !tbaa !9
  %21 = load i32, ptr %4, align 4, !tbaa !9
  invoke void @_ZN12WeightedTreeIiE7addEdgeEiii(ptr noundef nonnull align 8 dereferenceable(80) %1, i32 noundef %20, i32 noundef %21, i32 noundef 1)
          to label %22 unwind label %27

22:                                               ; preds = %19
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #7
  %23 = add nuw nsw i32 %.01123, 1
  %24 = load i32, ptr %2, align 4, !tbaa !9
  %25 = add nsw i32 %24, -1
  %26 = icmp slt i32 %23, %25
  br i1 %26, label %.lr.ph, label %._crit_edge, !llvm.loop !11

27:                                               ; preds = %19, %17, %.lr.ph
  %28 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #7
  br label %56

29:                                               ; preds = %._crit_edge
  call void @llvm.lifetime.start.p0(i64 112, ptr nonnull %5) #7
  invoke void @_ZN21CentroidDecompositionIiEC2ERK12WeightedTreeIiE(ptr noundef nonnull align 8 dereferenceable(112) %5, ptr noundef nonnull align 8 dereferenceable(80) %1)
          to label %.preheader21 unwind label %32

.preheader21:                                     ; preds = %29
  %30 = load i32, ptr %2, align 4, !tbaa !9
  %.not24 = icmp slt i32 %30, 1
  br i1 %.not24, label %._crit_edge30, label %.lr.ph26

.preheader:                                       ; preds = %38
  %31 = icmp slt i32 %40, 1
  br i1 %31, label %._crit_edge30, label %.lr.ph29

32:                                               ; preds = %29
  %33 = landingpad { ptr, i32 }
          cleanup
  br label %55

.lr.ph26:                                         ; preds = %.preheader21, %38
  %.01025 = phi i32 [ %39, %38 ], [ 1, %.preheader21 ]
  %34 = call noundef i32 @_ZNK21CentroidDecompositionIiE8getLabelEi(ptr noundef nonnull align 8 dereferenceable(112) %5, i32 noundef %.01025)
  %35 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %34)
          to label %36 unwind label %41

36:                                               ; preds = %.lr.ph26
  %37 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %35, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %38 unwind label %41

38:                                               ; preds = %36
  %39 = add nuw nsw i32 %.01025, 1
  %40 = load i32, ptr %2, align 4, !tbaa !9
  %.not.not = icmp slt i32 %.01025, %40
  br i1 %.not.not, label %.lr.ph26, label %.preheader, !llvm.loop !13

41:                                               ; preds = %36, %.lr.ph26
  %42 = landingpad { ptr, i32 }
          cleanup
  br label %54

._crit_edge30:                                    ; preds = %49, %.preheader21, %.preheader
  call void @_ZN21CentroidDecompositionIiED2Ev(ptr noundef nonnull align 8 dereferenceable(112) %5) #7
  call void @llvm.lifetime.end.p0(i64 112, ptr nonnull %5) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #7
  call void @_ZN12WeightedTreeIiED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %1) #7
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %1) #7
  ret i32 0

.lr.ph29:                                         ; preds = %.preheader, %49
  %.028 = phi i32 [ %50, %49 ], [ 1, %.preheader ]
  %43 = call noundef i32 @_ZNK21CentroidDecompositionIiE8getLabelEi(ptr noundef nonnull align 8 dereferenceable(112) %5, i32 noundef %.028)
  %44 = trunc i32 %43 to i8
  %45 = add i8 %44, 64
  %46 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i8 noundef signext %45)
          to label %47 unwind label %52

47:                                               ; preds = %.lr.ph29
  %48 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %46, ptr noundef nonnull @.str.2)
          to label %49 unwind label %52

49:                                               ; preds = %47
  %50 = add nuw nsw i32 %.028, 1
  %51 = load i32, ptr %2, align 4, !tbaa !9
  %.not16.not = icmp slt i32 %.028, %51
  br i1 %.not16.not, label %.lr.ph29, label %._crit_edge30, !llvm.loop !14

52:                                               ; preds = %47, %.lr.ph29
  %53 = landingpad { ptr, i32 }
          cleanup
  br label %54

54:                                               ; preds = %52, %41
  %.pn = phi { ptr, i32 } [ %42, %41 ], [ %53, %52 ]
  call void @_ZN21CentroidDecompositionIiED2Ev(ptr noundef nonnull align 8 dereferenceable(112) %5) #7
  br label %55

55:                                               ; preds = %54, %32
  %.pn.pn = phi { ptr, i32 } [ %.pn, %54 ], [ %33, %32 ]
  call void @llvm.lifetime.end.p0(i64 112, ptr nonnull %5) #7
  br label %56

56:                                               ; preds = %55, %27, %14
  %.pn19 = phi { ptr, i32 } [ %28, %27 ], [ %.pn.pn, %55 ], [ %15, %14 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #7
  call void @_ZN12WeightedTreeIiED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %1) #7
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %1) #7
  resume { ptr, i32 } %.pn19
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN12WeightedTreeIiEC2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #5 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #1

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN12WeightedTreeIiE5resetEi(ptr noundef nonnull align 8 dereferenceable(80), i32 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN12WeightedTreeIiE7addEdgeEiii(ptr noundef nonnull align 8 dereferenceable(80), i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN12WeightedTreeIiE7setRootEi(ptr noundef nonnull align 8 dereferenceable(80), i32 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN21CentroidDecompositionIiEC2ERK12WeightedTreeIiE(ptr noundef nonnull align 8 dereferenceable(112), ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZNK21CentroidDecompositionIiE8getLabelEi(ptr noundef nonnull align 8 dereferenceable(112), i32 noundef) local_unnamed_addr #5 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8), i8 noundef signext) local_unnamed_addr #3

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN21CentroidDecompositionIiED2Ev(ptr noundef nonnull align 8 dereferenceable(112)) unnamed_addr #6 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN12WeightedTreeIiED2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #6 align 2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "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 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 = { mustprogress norecurse 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 = { 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 #6 = { 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 #7 = { 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 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !12}


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