; LLVM IR from AdarshGaur/Competitive-Programming :: Codechef/Random Problems/Tree House.ll (Z3dfsxx)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_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<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%"struct.std::pair" = type { i64, i64 }
%"class.std::reverse_iterator" = type { %"class.__gnu_cxx::__normal_iterator.10" }
%"class.__gnu_cxx::__normal_iterator.10" = type { ptr }

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

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z3dfsxx(i64 noundef %0, i64 noundef %1) #0 personality ptr @__gxx_personality_v0 {
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca %"class.std::vector.0", align 8
  %7 = alloca ptr, align 8
  %8 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %9 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %10 = alloca i32, align 4
  %11 = alloca i64, align 8
  %12 = alloca i64, align 8
  %13 = alloca ptr, align 8
  %14 = alloca i32, align 4
  %15 = alloca %"struct.std::pair", align 8
  %16 = alloca %"class.std::reverse_iterator", align 8
  %17 = alloca %"class.std::reverse_iterator", align 8
  %18 = alloca i64, align 8
  %19 = alloca i64, align 8
  %20 = alloca ptr, align 8
  %21 = alloca %"class.__gnu_cxx::__normal_iterator.10", align 8
  %22 = alloca %"class.__gnu_cxx::__normal_iterator.10", align 8
  %23 = alloca %"struct.std::pair", align 8
  %24 = alloca i64, align 8
  store i64 %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 24, ptr %6) #6
  call void @_ZNSt6vectorISt4pairIxxESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #6
  %25 = load i64, ptr %4, align 8, !tbaa !5
  %26 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IxSaIxEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @adj, i64 noundef %25) #6
  store ptr %26, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #6
  %27 = load ptr, ptr %7, align 8, !tbaa !9
  %28 = call ptr @_ZNSt6vectorIxSaIxEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %27) #6
  %29 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %8, i32 0, i32 0
  store ptr %28, ptr %29, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #6
  %30 = load ptr, ptr %7, align 8, !tbaa !9
  %31 = call ptr @_ZNSt6vectorIxSaIxEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %30) #6
  %32 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %9, i32 0, i32 0
  store ptr %31, ptr %32, align 8
  br label %33

33:                                               ; preds = %53, %2
  %34 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPxSt6vectorIxSaIxEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8) %8, ptr noundef nonnull align 8 dereferenceable(8) %9) #6
  br i1 %34, label %36, label %35

35:                                               ; preds = %33
  store i32 2, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  br label %64

36:                                               ; preds = %33
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #6
  %37 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPxSt6vectorIxSaIxEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %8) #6
  %38 = load i64, ptr %37, align 8, !tbaa !5
  store i64 %38, ptr %11, align 8, !tbaa !5
  %39 = load i64, ptr %11, align 8, !tbaa !5
  %40 = load i64, ptr %5, align 8, !tbaa !5
  %41 = icmp eq i64 %39, %40
  br i1 %41, label %42, label %43

42:                                               ; preds = %36
  store i32 3, ptr %10, align 4
  br label %50

43:                                               ; preds = %36
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #6
  %44 = load i64, ptr %11, align 8, !tbaa !5
  %45 = load i64, ptr %4, align 8, !tbaa !5
  %46 = invoke noundef i64 @_Z3dfsxx(i64 noundef %44, i64 noundef %45)
          to label %47 unwind label %55

47:                                               ; preds = %43
  store i64 %46, ptr %12, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 16, ptr %15) #6
  invoke void @_ZNSt4pairIxxEC2IRxS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 8 dereferenceable(16) %15, ptr noundef nonnull align 8 dereferenceable(8) %12, ptr noundef nonnull align 8 dereferenceable(8) %11)
          to label %48 unwind label %59

48:                                               ; preds = %47
  invoke void @_ZNSt6vectorISt4pairIxxESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %6, ptr noundef nonnull align 8 dereferenceable(16) %15)
          to label %49 unwind label %59

49:                                               ; preds = %48
  call void @llvm.lifetime.end.p0(i64 16, ptr %15) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #6
  store i32 0, ptr %10, align 4
  br label %50

50:                                               ; preds = %49, %42
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #6
  %51 = load i32, ptr %10, align 4
  switch i32 %51, label %105 [
    i32 0, label %52
    i32 3, label %53
  ]

52:                                               ; preds = %50
  br label %53

53:                                               ; preds = %52, %50
  %54 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPxSt6vectorIxSaIxEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %8) #6
  br label %33

55:                                               ; preds = %43
  %56 = landingpad { ptr, i32 }
          cleanup
  %57 = extractvalue { ptr, i32 } %56, 0
  store ptr %57, ptr %13, align 8
  %58 = extractvalue { ptr, i32 } %56, 1
  store i32 %58, ptr %14, align 4
  br label %63

59:                                               ; preds = %48, %47
  %60 = landingpad { ptr, i32 }
          cleanup
  %61 = extractvalue { ptr, i32 } %60, 0
  store ptr %61, ptr %13, align 8
  %62 = extractvalue { ptr, i32 } %60, 1
  store i32 %62, ptr %14, align 4
  call void @llvm.lifetime.end.p0(i64 16, ptr %15) #6
  br label %63

63:                                               ; preds = %59, %55
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  br label %99

64:                                               ; preds = %35
  %65 = call noundef zeroext i1 @_ZNKSt6vectorISt4pairIxxESaIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(24) %6) #6
  br i1 %65, label %66, label %67

66:                                               ; preds = %64
  store i64 1, ptr %3, align 8
  store i32 1, ptr %10, align 4
  br label %97

67:                                               ; preds = %64
  call void @_ZNSt6vectorISt4pairIxxESaIS1_EE6rbeginEv(ptr dead_on_unwind writable sret(%"class.std::reverse_iterator") align 8 %16, ptr noundef nonnull align 8 dereferenceable(24) %6) #6
  call void @_ZNSt6vectorISt4pairIxxESaIS1_EE4rendEv(ptr dead_on_unwind writable sret(%"class.std::reverse_iterator") align 8 %17, ptr noundef nonnull align 8 dereferenceable(24) %6) #6
  invoke void @_ZSt4sortISt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS4_SaIS4_EEEEEEvT_SB_(ptr noundef %16, ptr noundef %17)
          to label %68 unwind label %78

68:                                               ; preds = %67
  call void @llvm.lifetime.start.p0(i64 8, ptr %18) #6
  store i64 1, ptr %18, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %19) #6
  store i64 1, ptr %19, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %20) #6
  store ptr %6, ptr %20, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %21) #6
  %69 = load ptr, ptr %20, align 8, !tbaa !9
  %70 = call ptr @_ZNSt6vectorISt4pairIxxESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %69) #6
  %71 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.10", ptr %21, i32 0, i32 0
  store ptr %70, ptr %71, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %22) #6
  %72 = load ptr, ptr %20, align 8, !tbaa !9
  %73 = call ptr @_ZNSt6vectorISt4pairIxxESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %72) #6
  %74 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.10", ptr %22, i32 0, i32 0
  store ptr %73, ptr %74, align 8
  br label %75

75:                                               ; preds = %93, %68
  %76 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt4pairIxxESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %21, ptr noundef nonnull align 8 dereferenceable(8) %22) #6
  br i1 %76, label %82, label %77

77:                                               ; preds = %75
  store i32 4, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %22) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %21) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %20) #6
  br label %95

78:                                               ; preds = %67
  %79 = landingpad { ptr, i32 }
          cleanup
  %80 = extractvalue { ptr, i32 } %79, 0
  store ptr %80, ptr %13, align 8
  %81 = extractvalue { ptr, i32 } %79, 1
  store i32 %81, ptr %14, align 4
  br label %99

82:                                               ; preds = %75
  call void @llvm.lifetime.start.p0(i64 16, ptr %23) #6
  %83 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %21) #6
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %23, ptr align 8 %83, i64 16, i1 false)
  call void @llvm.lifetime.start.p0(i64 8, ptr %24) #6
  %84 = getelementptr inbounds %"struct.std::pair", ptr %23, i32 0, i32 0
  %85 = load i64, ptr %84, align 8, !tbaa !11
  %86 = load i64, ptr %18, align 8, !tbaa !5
  %87 = mul nsw i64 %85, %86
  store i64 %87, ptr %24, align 8, !tbaa !5
  %88 = load i64, ptr %24, align 8, !tbaa !5
  %89 = load i64, ptr %19, align 8, !tbaa !5
  %90 = add nsw i64 %89, %88
  store i64 %90, ptr %19, align 8, !tbaa !5
  %91 = load i64, ptr %18, align 8, !tbaa !5
  %92 = add nsw i64 %91, 1
  store i64 %92, ptr %18, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %24) #6
  call void @llvm.lifetime.end.p0(i64 16, ptr %23) #6
  br label %93

93:                                               ; preds = %82
  %94 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %21) #6
  br label %75

95:                                               ; preds = %77
  %96 = load i64, ptr %19, align 8, !tbaa !5
  store i64 %96, ptr %3, align 8
  store i32 1, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %19) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %18) #6
  br label %97

97:                                               ; preds = %95, %66
  call void @_ZNSt6vectorISt4pairIxxESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr %6) #6
  %98 = load i64, ptr %3, align 8
  ret i64 %98

99:                                               ; preds = %78, %63
  call void @_ZNSt6vectorISt4pairIxxESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr %6) #6
  br label %100

100:                                              ; preds = %99
  %101 = load ptr, ptr %13, align 8
  %102 = load i32, ptr %14, align 4
  %103 = insertvalue { ptr, i32 } poison, ptr %101, 0
  %104 = insertvalue { ptr, i32 } %103, i32 %102, 1
  resume { ptr, i32 } %104

105:                                              ; preds = %50
  unreachable
}

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIxxESaIS1_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_IxSaIxEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIxSaIxEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIxSaIxEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPxSt6vectorIxSaIxEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPxSt6vectorIxSaIxEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIxxESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(16)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIxxEC2IRxS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) 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: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPxSt6vectorIxSaIxEEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt6vectorISt4pairIxxESaIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortISt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS4_SaIS4_EEEEEEvT_SB_(ptr noundef, ptr noundef) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIxxESaIS1_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 @_ZNSt6vectorISt4pairIxxESaIS1_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 @_ZNSt6vectorISt4pairIxxESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt4pairIxxESaIS1_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_cxxneIPSt4pairIxxESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIxxESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { inlinehint mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { 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 #5 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #6 = { 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 = !{!"long long", !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, !6, i64 0}
!12 = !{!"_ZTSSt4pairIxxE", !6, i64 0, !6, i64 8}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<long long>, std::allocator<std::vector<long long>>>::_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<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<long long, long long>, std::allocator<std::pair<long long, long long>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%"struct.std::pair" = type { i64, i64 }
%"class.std::reverse_iterator" = type { %"class.__gnu_cxx::__normal_iterator.10" }
%"class.__gnu_cxx::__normal_iterator.10" = type { ptr }

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

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z3dfsxx(i64 noundef %0, i64 noundef %1) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %3 = alloca %"class.std::vector.0", align 8
  %4 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %5 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  %8 = alloca %"struct.std::pair", align 8
  %9 = alloca %"class.std::reverse_iterator", align 8
  %10 = alloca %"class.std::reverse_iterator", align 8
  %11 = alloca %"class.__gnu_cxx::__normal_iterator.10", align 8
  %12 = alloca %"class.__gnu_cxx::__normal_iterator.10", align 8
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %3) #5
  call void @_ZNSt6vectorISt4pairIxxESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #5
  %13 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IxSaIxEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @adj, i64 noundef %0) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #5
  %14 = call ptr @_ZNSt6vectorIxSaIxEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %13) #5
  store ptr %14, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #5
  %15 = call ptr @_ZNSt6vectorIxSaIxEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %13) #5
  store ptr %15, ptr %5, align 8
  %16 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPxSt6vectorIxSaIxEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %5) #5
  br i1 %16, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %25, %2
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #5
  %17 = call noundef zeroext i1 @_ZNKSt6vectorISt4pairIxxESaIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #5
  br i1 %17, label %46, label %33

.lr.ph:                                           ; preds = %2, %25
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #5
  %18 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPxSt6vectorIxSaIxEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %4) #5
  %19 = load i64, ptr %18, align 8, !tbaa !5
  store i64 %19, ptr %6, align 8, !tbaa !5
  %20 = icmp eq i64 %19, %1
  br i1 %20, label %25, label %21

21:                                               ; preds = %.lr.ph
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %7) #5
  %22 = invoke noundef i64 @_Z3dfsxx(i64 noundef %19, i64 noundef %0)
          to label %23 unwind label %28

23:                                               ; preds = %21
  store i64 %22, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %8) #5
  call void @_ZNSt4pairIxxEC2IRxS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 8 dereferenceable(16) %8, ptr noundef nonnull align 8 dereferenceable(8) %7, ptr noundef nonnull align 8 dereferenceable(8) %6)
  invoke void @_ZNSt6vectorISt4pairIxxESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %3, ptr noundef nonnull align 8 dereferenceable(16) %8)
          to label %24 unwind label %30

24:                                               ; preds = %23
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %8) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %7) #5
  br label %25

25:                                               ; preds = %.lr.ph, %24
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #5
  %26 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPxSt6vectorIxSaIxEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %4) #5
  %27 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPxSt6vectorIxSaIxEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %5) #5
  br i1 %27, label %.lr.ph, label %._crit_edge

28:                                               ; preds = %21
  %29 = landingpad { ptr, i32 }
          cleanup
  br label %32

30:                                               ; preds = %23
  %31 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %8) #5
  br label %32

32:                                               ; preds = %30, %28
  %.pn = phi { ptr, i32 } [ %31, %30 ], [ %29, %28 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %7) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #5
  br label %47

33:                                               ; preds = %._crit_edge
  call void @_ZNSt6vectorISt4pairIxxESaIS1_EE6rbeginEv(ptr dead_on_unwind nonnull writable sret(%"class.std::reverse_iterator") align 8 %9, ptr noundef nonnull align 8 dereferenceable(24) %3) #5
  call void @_ZNSt6vectorISt4pairIxxESaIS1_EE4rendEv(ptr dead_on_unwind nonnull writable sret(%"class.std::reverse_iterator") align 8 %10, ptr noundef nonnull align 8 dereferenceable(24) %3) #5
  invoke void @_ZSt4sortISt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS4_SaIS4_EEEEEEvT_SB_(ptr noundef nonnull %9, ptr noundef nonnull %10)
          to label %34 unwind label %38

34:                                               ; preds = %33
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %11) #5
  %35 = call ptr @_ZNSt6vectorISt4pairIxxESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #5
  store ptr %35, ptr %11, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %12) #5
  %36 = call ptr @_ZNSt6vectorISt4pairIxxESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #5
  store ptr %36, ptr %12, align 8
  %37 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt4pairIxxESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %11, ptr noundef nonnull align 8 dereferenceable(8) %12) #5
  br i1 %37, label %.lr.ph24, label %._crit_edge25

._crit_edge25:                                    ; preds = %.lr.ph24, %34
  %.017.lcssa = phi i64 [ 1, %34 ], [ %42, %.lr.ph24 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %12) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %11) #5
  br label %46

38:                                               ; preds = %33
  %39 = landingpad { ptr, i32 }
          cleanup
  br label %47

.lr.ph24:                                         ; preds = %34, %.lr.ph24
  %.01722 = phi i64 [ %42, %.lr.ph24 ], [ 1, %34 ]
  %.01821 = phi i64 [ %43, %.lr.ph24 ], [ 1, %34 ]
  %40 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %11) #5
  %.sroa.0.0.copyload = load i64, ptr %40, align 8
  %41 = mul nsw i64 %.sroa.0.0.copyload, %.01821
  %42 = add nsw i64 %41, %.01722
  %43 = add nuw nsw i64 %.01821, 1
  %44 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %11) #5
  %45 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt4pairIxxESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %11, ptr noundef nonnull align 8 dereferenceable(8) %12) #5
  br i1 %45, label %.lr.ph24, label %._crit_edge25

46:                                               ; preds = %._crit_edge, %._crit_edge25
  %.0 = phi i64 [ %.017.lcssa, %._crit_edge25 ], [ 1, %._crit_edge ]
  call void @_ZNSt6vectorISt4pairIxxESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #5
  ret i64 %.0

47:                                               ; preds = %38, %32
  %.pn.pn = phi { ptr, i32 } [ %.pn, %32 ], [ %39, %38 ]
  call void @_ZNSt6vectorISt4pairIxxESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #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 nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIxxESaIS1_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_IxSaIxEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIxSaIxEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIxSaIxEE3endEv(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_cxxneIPxSt6vectorIxSaIxEEEEbRKNS_17__normal_iteratorIT_T0_EESA_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPxSt6vectorIxSaIxEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIxxESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIxxEC2IRxS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) 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: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPxSt6vectorIxSaIxEEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt6vectorISt4pairIxxESaIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortISt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS4_SaIS4_EEEEEEvT_SB_(ptr noundef, ptr noundef) local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIxxESaIS1_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 @_ZNSt6vectorISt4pairIxxESaIS1_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 @_ZNSt6vectorISt4pairIxxESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt4pairIxxESaIS1_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_cxxneIPSt4pairIxxESt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt4pairIxxESt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) 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_iteratorIPSt4pairIxxESt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIxxESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { inlinehint mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { 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 #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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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