; LLVM IR from forestLoop/Learning-ITMO-Academy-Pilot-Course :: disjoint-sets-union (1-B)

; 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_istream" = type { ptr, i64, %"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_ostream" = type { ptr, %"class.std::basic_ios" }
%class.UnionFindMinMax = type { %"class.std::vector", %"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::__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::tuple" = type { %"struct.std::_Tuple_impl" }
%"struct.std::_Tuple_impl" = type { %"struct.std::_Tuple_impl.3", %"struct.std::_Head_base.6" }
%"struct.std::_Tuple_impl.3" = type { %"struct.std::_Tuple_impl.4", %"struct.std::_Head_base.5" }
%"struct.std::_Tuple_impl.4" = type { %"struct.std::_Head_base" }
%"struct.std::_Head_base" = type { i32 }
%"struct.std::_Head_base.5" = type { i32 }
%"struct.std::_Head_base.6" = type { i32 }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str = external hidden unnamed_addr constant [6 x i8], align 1
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca %class.UnionFindMinMax, align 8
  %5 = alloca %"class.std::__cxx11::basic_string", align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca ptr, align 8
  %11 = alloca %"class.std::tuple", align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #7
  br label %12

12:                                               ; preds = %81, %0
  %13 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %14 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %13, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %15 = load ptr, ptr %14, align 8, !tbaa !5
  %16 = getelementptr i8, ptr %15, i64 -24
  %17 = load i64, ptr %16, align 8
  %18 = getelementptr inbounds i8, ptr %14, i64 %17
  %19 = call noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264) %18)
  br i1 %19, label %20, label %83

20:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 72, ptr %4) #7
  %21 = load i32, ptr %2, align 4, !tbaa !8
  %22 = add nsw i32 %21, 1
  %23 = sext i32 %22 to i64
  call void @_ZN15UnionFindMinMaxC2Em(ptr noundef nonnull align 8 dereferenceable(72) %4, i64 noundef %23)
  call void @llvm.lifetime.start.p0(i64 32, ptr %5) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %5) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #7
  br label %24

24:                                               ; preds = %80, %20
  %25 = load i32, ptr %3, align 4, !tbaa !8
  %26 = add nsw i32 %25, -1
  store i32 %26, ptr %3, align 4, !tbaa !8
  %27 = icmp ne i32 %25, 0
  br i1 %27, label %28, label %81

28:                                               ; preds = %24
  %29 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(32) %5)
          to label %30 unwind label %41

30:                                               ; preds = %28
  %31 = invoke noundef zeroext i1 @_ZSteqIcSt11char_traitsIcESaIcEEbRKNSt7__cxx1112basic_stringIT_T0_T1_EEPKS5_(ptr noundef nonnull align 8 dereferenceable(32) %5, ptr noundef @.str)
          to label %32 unwind label %41

32:                                               ; preds = %30
  br i1 %31, label %33, label %45

33:                                               ; preds = %32
  %34 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %6)
          to label %35 unwind label %41

35:                                               ; preds = %33
  %36 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %34, ptr noundef nonnull align 4 dereferenceable(4) %7)
          to label %37 unwind label %41

37:                                               ; preds = %35
  %38 = load i32, ptr %6, align 4, !tbaa !8
  %39 = load i32, ptr %7, align 4, !tbaa !8
  invoke void @_ZN15UnionFindMinMax5UnionEii(ptr noundef nonnull align 8 dereferenceable(72) %4, i32 noundef %38, i32 noundef %39)
          to label %40 unwind label %41

40:                                               ; preds = %37
  br label %80

41:                                               ; preds = %45, %37, %35, %33, %30, %28
  %42 = landingpad { ptr, i32 }
          cleanup
  %43 = extractvalue { ptr, i32 } %42, 0
  store ptr %43, ptr %8, align 8
  %44 = extractvalue { ptr, i32 } %42, 1
  store i32 %44, ptr %9, align 4
  br label %82

45:                                               ; preds = %32
  %46 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %6)
          to label %47 unwind label %41

47:                                               ; preds = %45
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #7
  call void @llvm.lifetime.start.p0(i64 12, ptr %11) #7
  %48 = load i32, ptr %6, align 4, !tbaa !8
  invoke void @_ZN15UnionFindMinMax3GetEi(ptr dead_on_unwind writable sret(%"class.std::tuple") align 4 %11, ptr noundef nonnull align 8 dereferenceable(72) %4, i32 noundef %48)
          to label %49 unwind label %71

49:                                               ; preds = %47
  store ptr %11, ptr %10, align 8, !tbaa !11
  %50 = load ptr, ptr %10, align 8, !tbaa !11
  %51 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3getILm0EJiiiEERKNSt13tuple_elementIXT_ESt5tupleIJDpT0_EEE4typeERKS4_(ptr noundef nonnull align 4 dereferenceable(12) %50) #7
  %52 = load i32, ptr %51, align 4, !tbaa !8
  %53 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %52)
          to label %54 unwind label %75

54:                                               ; preds = %49
  %55 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %53, ptr noundef @.str.1)
          to label %56 unwind label %75

56:                                               ; preds = %54
  %57 = load ptr, ptr %10, align 8, !tbaa !11
  %58 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3getILm1EJiiiEERKNSt13tuple_elementIXT_ESt5tupleIJDpT0_EEE4typeERKS4_(ptr noundef nonnull align 4 dereferenceable(12) %57) #7
  %59 = load i32, ptr %58, align 4, !tbaa !8
  %60 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %55, i32 noundef %59)
          to label %61 unwind label %75

61:                                               ; preds = %56
  %62 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %60, ptr noundef @.str.1)
          to label %63 unwind label %75

63:                                               ; preds = %61
  %64 = load ptr, ptr %10, align 8, !tbaa !11
  %65 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3getILm2EJiiiEERKNSt13tuple_elementIXT_ESt5tupleIJDpT0_EEE4typeERKS4_(ptr noundef nonnull align 4 dereferenceable(12) %64) #7
  %66 = load i32, ptr %65, align 4, !tbaa !8
  %67 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %62, i32 noundef %66)
          to label %68 unwind label %75

68:                                               ; preds = %63
  %69 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %67, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %70 unwind label %75

70:                                               ; preds = %68
  call void @llvm.lifetime.end.p0(i64 12, ptr %11) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #7
  br label %80

71:                                               ; preds = %47
  %72 = landingpad { ptr, i32 }
          cleanup
  %73 = extractvalue { ptr, i32 } %72, 0
  store ptr %73, ptr %8, align 8
  %74 = extractvalue { ptr, i32 } %72, 1
  store i32 %74, ptr %9, align 4
  br label %79

75:                                               ; preds = %68, %63, %61, %56, %54, %49
  %76 = landingpad { ptr, i32 }
          cleanup
  %77 = extractvalue { ptr, i32 } %76, 0
  store ptr %77, ptr %8, align 8
  %78 = extractvalue { ptr, i32 } %76, 1
  store i32 %78, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 12, ptr %11) #7
  br label %79

79:                                               ; preds = %75, %71
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #7
  br label %82

80:                                               ; preds = %70, %40
  br label %24, !llvm.loop !13

81:                                               ; preds = %24
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %5) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr %5) #7
  call void @_ZN15UnionFindMinMaxD2Ev(ptr noundef nonnull align 8 dereferenceable(72) %4) #7
  call void @llvm.lifetime.end.p0(i64 72, ptr %4) #7
  br label %12, !llvm.loop !15

82:                                               ; preds = %79, %41
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %5) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr %5) #7
  call void @_ZN15UnionFindMinMaxD2Ev(ptr noundef nonnull align 8 dereferenceable(72) %4) #7
  call void @llvm.lifetime.end.p0(i64 72, ptr %4) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #7
  br label %84

83:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #7
  ret i32 0

84:                                               ; preds = %82
  %85 = load ptr, ptr %8, align 8
  %86 = load i32, ptr %9, align 4
  %87 = insertvalue { ptr, i32 } poison, ptr %85, 0
  %88 = insertvalue { ptr, i32 } %87, i32 %86, 1
  resume { ptr, i32 } %88
}

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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #2

; Function Attrs: mustprogress uwtable
declare noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264)) #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN15UnionFindMinMaxC2Em(ptr noundef nonnull align 8 dereferenceable(72), i64 noundef) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #4 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(32)) #2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZSteqIcSt11char_traitsIcESaIcEEbRKNSt7__cxx1112basic_stringIT_T0_T1_EEPKS5_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef) #5

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN15UnionFindMinMax5UnionEii(ptr noundef nonnull align 8 dereferenceable(72), i32 noundef, i32 noundef) #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN15UnionFindMinMax3GetEi(ptr dead_on_unwind noalias writable sret(%"class.std::tuple") align 4, ptr noundef nonnull align 8 dereferenceable(72), i32 noundef) #3 align 2

; 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) #6

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3getILm0EJiiiEERKNSt13tuple_elementIXT_ESt5tupleIJDpT0_EEE4typeERKS4_(ptr noundef nonnull align 4 dereferenceable(12)) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3getILm1EJiiiEERKNSt13tuple_elementIXT_ESt5tupleIJDpT0_EEE4typeERKS4_(ptr noundef nonnull align 4 dereferenceable(12)) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3getILm2EJiiiEERKNSt13tuple_elementIXT_ESt5tupleIJDpT0_EEE4typeERKS4_(ptr noundef nonnull align 4 dereferenceable(12)) #4

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #3 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)) #6

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

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #4 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN15UnionFindMinMaxD2Ev(ptr noundef nonnull align 8 dereferenceable(72)) unnamed_addr #5 align 2

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress 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 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 = { 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 #6 = { 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 #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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"any pointer", !10, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


; 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_istream" = type { ptr, i64, %"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_ostream" = type { ptr, %"class.std::basic_ios" }
%class.UnionFindMinMax = type { %"class.std::vector", %"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::__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::tuple" = type { %"struct.std::_Tuple_impl" }
%"struct.std::_Tuple_impl" = type { %"struct.std::_Tuple_impl.3", %"struct.std::_Head_base.6" }
%"struct.std::_Tuple_impl.3" = type { %"struct.std::_Tuple_impl.4", %"struct.std::_Head_base.5" }
%"struct.std::_Tuple_impl.4" = type { %"struct.std::_Head_base" }
%"struct.std::_Head_base" = type { i32 }
%"struct.std::_Head_base.5" = type { i32 }
%"struct.std::_Head_base.6" = type { i32 }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str = external hidden unnamed_addr constant [6 x i8], align 1
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca %class.UnionFindMinMax, align 8
  %4 = alloca %"class.std::__cxx11::basic_string", align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca %"class.std::tuple", align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #7
  %8 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
  %9 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %8, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %10 = load ptr, ptr %9, align 8, !tbaa !5
  %11 = getelementptr i8, ptr %10, i64 -24
  %12 = load i64, ptr %11, align 8
  %13 = getelementptr inbounds i8, ptr %9, i64 %12
  %14 = call noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264) %13)
  br i1 %14, label %.lr.ph11, label %._crit_edge12

.lr.ph11:                                         ; preds = %0, %._crit_edge
  call void @llvm.lifetime.start.p0(i64 72, ptr nonnull %3) #7
  %15 = load i32, ptr %1, align 4, !tbaa !8
  %16 = add nsw i32 %15, 1
  %17 = sext i32 %16 to i64
  call void @_ZN15UnionFindMinMaxC2Em(ptr noundef nonnull align 8 dereferenceable(72) %3, i64 noundef %17)
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %4) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #7
  %18 = load i32, ptr %2, align 4, !tbaa !8
  %19 = add nsw i32 %18, -1
  store i32 %19, ptr %2, align 4, !tbaa !8
  %.not9 = icmp eq i32 %18, 0
  br i1 %.not9, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph11, %59
  %20 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(32) %4)
          to label %21 unwind label %30

21:                                               ; preds = %.lr.ph
  %22 = call noundef zeroext i1 @_ZSteqIcSt11char_traitsIcESaIcEEbRKNSt7__cxx1112basic_stringIT_T0_T1_EEPKS5_(ptr noundef nonnull align 8 dereferenceable(32) %4, ptr noundef nonnull @.str)
  br i1 %22, label %23, label %32

23:                                               ; preds = %21
  %24 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %5)
          to label %25 unwind label %30

25:                                               ; preds = %23
  %26 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %24, ptr noundef nonnull align 4 dereferenceable(4) %6)
          to label %27 unwind label %30

27:                                               ; preds = %25
  %28 = load i32, ptr %5, align 4, !tbaa !8
  %29 = load i32, ptr %6, align 4, !tbaa !8
  invoke void @_ZN15UnionFindMinMax5UnionEii(ptr noundef nonnull align 8 dereferenceable(72) %3, i32 noundef %28, i32 noundef %29)
          to label %59 unwind label %30

30:                                               ; preds = %32, %27, %25, %23, %.lr.ph
  %31 = landingpad { ptr, i32 }
          cleanup
  br label %69

32:                                               ; preds = %21
  %33 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %5)
          to label %34 unwind label %30

34:                                               ; preds = %32
  call void @llvm.lifetime.start.p0(i64 12, ptr nonnull %7) #7
  %35 = load i32, ptr %5, align 4, !tbaa !8
  invoke void @_ZN15UnionFindMinMax3GetEi(ptr dead_on_unwind nonnull writable sret(%"class.std::tuple") align 4 %7, ptr noundef nonnull align 8 dereferenceable(72) %3, i32 noundef %35)
          to label %36 unwind label %55

36:                                               ; preds = %34
  %37 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3getILm0EJiiiEERKNSt13tuple_elementIXT_ESt5tupleIJDpT0_EEE4typeERKS4_(ptr noundef nonnull align 4 dereferenceable(12) %7) #7
  %38 = load i32, ptr %37, align 4, !tbaa !8
  %39 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %38)
          to label %40 unwind label %57

40:                                               ; preds = %36
  %41 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %39, ptr noundef nonnull @.str.1)
          to label %42 unwind label %57

42:                                               ; preds = %40
  %43 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3getILm1EJiiiEERKNSt13tuple_elementIXT_ESt5tupleIJDpT0_EEE4typeERKS4_(ptr noundef nonnull align 4 dereferenceable(12) %7) #7
  %44 = load i32, ptr %43, align 4, !tbaa !8
  %45 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %41, i32 noundef %44)
          to label %46 unwind label %57

46:                                               ; preds = %42
  %47 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %45, ptr noundef nonnull @.str.1)
          to label %48 unwind label %57

48:                                               ; preds = %46
  %49 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3getILm2EJiiiEERKNSt13tuple_elementIXT_ESt5tupleIJDpT0_EEE4typeERKS4_(ptr noundef nonnull align 4 dereferenceable(12) %7) #7
  %50 = load i32, ptr %49, align 4, !tbaa !8
  %51 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %47, i32 noundef %50)
          to label %52 unwind label %57

52:                                               ; preds = %48
  %53 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %51, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
          to label %54 unwind label %57

54:                                               ; preds = %52
  call void @llvm.lifetime.end.p0(i64 12, ptr nonnull %7) #7
  br label %59

55:                                               ; preds = %34
  %56 = landingpad { ptr, i32 }
          cleanup
  br label %69

57:                                               ; preds = %52, %48, %46, %42, %40, %36
  %58 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 12, ptr nonnull %7) #7
  br label %69

59:                                               ; preds = %27, %54
  %60 = load i32, ptr %2, align 4, !tbaa !8
  %61 = add nsw i32 %60, -1
  store i32 %61, ptr %2, align 4, !tbaa !8
  %.not = icmp eq i32 %60, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !11

._crit_edge:                                      ; preds = %59, %.lr.ph11
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #7
  call void @_ZN15UnionFindMinMaxD2Ev(ptr noundef nonnull align 8 dereferenceable(72) %3) #7
  call void @llvm.lifetime.end.p0(i64 72, ptr nonnull %3) #7
  %62 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
  %63 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %62, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %64 = load ptr, ptr %63, align 8, !tbaa !5
  %65 = getelementptr i8, ptr %64, i64 -24
  %66 = load i64, ptr %65, align 8
  %67 = getelementptr inbounds i8, ptr %63, i64 %66
  %68 = call noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264) %67)
  br i1 %68, label %.lr.ph11, label %._crit_edge12, !llvm.loop !13

69:                                               ; preds = %55, %57, %30
  %.pn7 = phi { ptr, i32 } [ %31, %30 ], [ %58, %57 ], [ %56, %55 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #7
  call void @_ZN15UnionFindMinMaxD2Ev(ptr noundef nonnull align 8 dereferenceable(72) %3) #7
  call void @llvm.lifetime.end.p0(i64 72, ptr nonnull %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #7
  resume { ptr, i32 } %.pn7

._crit_edge12:                                    ; preds = %._crit_edge, %0
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #7
  ret i32 0
}

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

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 #2

; Function Attrs: mustprogress uwtable
declare noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv(ptr noundef nonnull align 8 dereferenceable(264)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN15UnionFindMinMaxC2Em(ptr noundef nonnull align 8 dereferenceable(72), i64 noundef) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #4 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZSteqIcSt11char_traitsIcESaIcEEbRKNSt7__cxx1112basic_stringIT_T0_T1_EEPKS5_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef) local_unnamed_addr #5

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN15UnionFindMinMax5UnionEii(ptr noundef nonnull align 8 dereferenceable(72), i32 noundef, i32 noundef) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN15UnionFindMinMax3GetEi(ptr dead_on_unwind noalias writable sret(%"class.std::tuple") align 4, ptr noundef nonnull align 8 dereferenceable(72), i32 noundef) local_unnamed_addr #3 align 2

; 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 #6

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3getILm0EJiiiEERKNSt13tuple_elementIXT_ESt5tupleIJDpT0_EEE4typeERKS4_(ptr noundef nonnull align 4 dereferenceable(12)) local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3getILm1EJiiiEERKNSt13tuple_elementIXT_ESt5tupleIJDpT0_EEE4typeERKS4_(ptr noundef nonnull align 4 dereferenceable(12)) local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3getILm2EJiiiEERKNSt13tuple_elementIXT_ESt5tupleIJDpT0_EEE4typeERKS4_(ptr noundef nonnull align 4 dereferenceable(12)) local_unnamed_addr #4

; 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 #3 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)) #6

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

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #4 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN15UnionFindMinMaxD2Ev(ptr noundef nonnull align 8 dereferenceable(72)) unnamed_addr #5 align 2

attributes #0 = { 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress 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 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 = { 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 #6 = { 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 #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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


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