; LLVM IR from abeaumont/competitive-programming :: cses/1686.ll (Z4dfs4i)

; 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.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<std::unordered_set<int>, std::allocator<std::unordered_set<int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::unordered_set<int>, std::allocator<std::unordered_set<int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::unordered_set<int>, std::allocator<std::unordered_set<int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::unordered_set<int>, std::allocator<std::unordered_set<int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.5" = 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 }>
%"class.std::vector.14" = type { %"struct.std::_Vector_base.15" }
%"struct.std::_Vector_base.15" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::_Bit_reference" = type { ptr, i64 }
%"struct.std::__detail::_Node_iterator" = type { %"struct.std::__detail::_Node_iterator_base" }
%"struct.std::__detail::_Node_iterator_base" = type { ptr }

@q = external dso_local global %"class.std::vector.0", align 8
@s = external dso_local global %"class.std::vector.5", align 8
@e = external dso_local global %"class.std::vector.14", 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: mustprogress uwtable
declare dso_local { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40), i64 noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt14_Bit_referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16), i1 noundef zeroext) #2 align 2

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(56) ptr @_ZNSt6vectorISt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEESaIS6_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(56)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(56)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNSt8__detailneERKNS_19_Node_iterator_baseIiLb0EEES3_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt8__detail14_Node_iteratorIiLb1ELb0EEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt8__detail14_Node_iteratorIiLb1ELb0EEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z4dfs4i(i32 noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca %"struct.std::_Bit_reference", align 8
  %4 = alloca i64, align 8
  %5 = alloca ptr, align 8
  %6 = alloca %"struct.std::__detail::_Node_iterator", align 8
  %7 = alloca %"struct.std::__detail::_Node_iterator", align 8
  %8 = alloca i32, align 4
  %9 = alloca %"struct.std::_Bit_reference", align 8
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 16, ptr %3) #3
  %10 = load i32, ptr %2, align 4, !tbaa !5
  %11 = sext i32 %10 to i64
  %12 = call { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40) @s, i64 noundef %11)
  %13 = getelementptr inbounds { ptr, i64 }, ptr %3, i32 0, i32 0
  %14 = extractvalue { ptr, i64 } %12, 0
  store ptr %14, ptr %13, align 8
  %15 = getelementptr inbounds { ptr, i64 }, ptr %3, i32 0, i32 1
  %16 = extractvalue { ptr, i64 } %12, 1
  store i64 %16, ptr %15, align 8
  %17 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt14_Bit_referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16) %3, i1 noundef zeroext true) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store i64 0, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %18 = load i32, ptr %2, align 4, !tbaa !5
  %19 = sext i32 %18 to i64
  %20 = call noundef nonnull align 8 dereferenceable(56) ptr @_ZNSt6vectorISt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEESaIS6_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @q, i64 noundef %19) #3
  store ptr %20, ptr %5, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %21 = load ptr, ptr %5, align 8, !tbaa !11
  %22 = call ptr @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(56) %21) #3
  %23 = getelementptr inbounds %"struct.std::__detail::_Node_iterator", ptr %6, i32 0, i32 0
  %24 = getelementptr inbounds %"struct.std::__detail::_Node_iterator_base", ptr %23, i32 0, i32 0
  store ptr %22, ptr %24, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %25 = load ptr, ptr %5, align 8, !tbaa !11
  %26 = call ptr @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(56) %25) #3
  %27 = getelementptr inbounds %"struct.std::__detail::_Node_iterator", ptr %7, i32 0, i32 0
  %28 = getelementptr inbounds %"struct.std::__detail::_Node_iterator_base", ptr %27, i32 0, i32 0
  store ptr %26, ptr %28, align 8
  br label %29

29:                                               ; preds = %60, %1
  %30 = call noundef zeroext i1 @_ZNSt8__detailneERKNS_19_Node_iterator_baseIiLb0EEES3_(ptr noundef nonnull align 8 dereferenceable(8) %6, ptr noundef nonnull align 8 dereferenceable(8) %7) #3
  br i1 %30, label %32, label %31

31:                                               ; preds = %29
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  br label %62

32:                                               ; preds = %29
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  %33 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt8__detail14_Node_iteratorIiLb1ELb0EEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #3
  %34 = load i32, ptr %33, align 4, !tbaa !5
  store i32 %34, ptr %8, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 16, ptr %9) #3
  %35 = load i32, ptr %8, align 4, !tbaa !5
  %36 = sext i32 %35 to i64
  %37 = call { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40) @s, i64 noundef %36)
  %38 = getelementptr inbounds { ptr, i64 }, ptr %9, i32 0, i32 0
  %39 = extractvalue { ptr, i64 } %37, 0
  store ptr %39, ptr %38, align 8
  %40 = getelementptr inbounds { ptr, i64 }, ptr %9, i32 0, i32 1
  %41 = extractvalue { ptr, i64 } %37, 1
  store i64 %41, ptr %40, align 8
  %42 = call noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16) %9) #3
  %43 = xor i1 %42, true
  call void @llvm.lifetime.end.p0(i64 16, ptr %9) #3
  br i1 %43, label %44, label %47

44:                                               ; preds = %32
  %45 = load i32, ptr %8, align 4, !tbaa !5
  %46 = call noundef i64 @_Z4dfs4i(i32 noundef %45)
  br label %47

47:                                               ; preds = %44, %32
  %48 = load i32, ptr %8, align 4, !tbaa !5
  %49 = sext i32 %48 to i64
  %50 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @e, i64 noundef %49) #3
  %51 = load i64, ptr %50, align 8, !tbaa !9
  %52 = load i64, ptr %4, align 8, !tbaa !9
  %53 = icmp sgt i64 %51, %52
  br i1 %53, label %54, label %59

54:                                               ; preds = %47
  %55 = load i32, ptr %8, align 4, !tbaa !5
  %56 = sext i32 %55 to i64
  %57 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @e, i64 noundef %56) #3
  %58 = load i64, ptr %57, align 8, !tbaa !9
  store i64 %58, ptr %4, align 8, !tbaa !9
  br label %59

59:                                               ; preds = %54, %47
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  br label %60

60:                                               ; preds = %59
  %61 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt8__detail14_Node_iteratorIiLb1ELb0EEppEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #3
  br label %29

62:                                               ; preds = %31
  %63 = load i64, ptr %4, align 8, !tbaa !9
  %64 = load i32, ptr %2, align 4, !tbaa !5
  %65 = sext i32 %64 to i64
  %66 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @e, i64 noundef %65) #3
  %67 = load i64, ptr %66, align 8, !tbaa !9
  %68 = add nsw i64 %67, %63
  store i64 %68, ptr %66, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  ret i64 %68
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = { nounwind }

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

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


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

%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<std::unordered_set<int>, std::allocator<std::unordered_set<int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::unordered_set<int>, std::allocator<std::unordered_set<int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::unordered_set<int>, std::allocator<std::unordered_set<int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::unordered_set<int>, std::allocator<std::unordered_set<int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.5" = 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 }>
%"class.std::vector.14" = type { %"struct.std::_Vector_base.15" }
%"struct.std::_Vector_base.15" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::_Bit_reference" = type { ptr, i64 }
%"struct.std::__detail::_Node_iterator" = type { %"struct.std::__detail::_Node_iterator_base" }
%"struct.std::__detail::_Node_iterator_base" = type { ptr }

@q = external dso_local global %"class.std::vector.0", align 8
@s = external dso_local global %"class.std::vector.5", align 8
@e = external dso_local global %"class.std::vector.14", 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 uwtable
declare dso_local { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt14_Bit_referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16), i1 noundef zeroext) local_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) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(56) ptr @_ZNSt6vectorISt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEESaIS6_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 @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(56)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(56)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNSt8__detailneERKNS_19_Node_iterator_baseIiLb0EEES3_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt8__detail14_Node_iteratorIiLb1ELb0EEdeEv(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 @_ZNSt8__detail14_Node_iteratorIiLb1ELb0EEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z4dfs4i(i32 noundef %0) local_unnamed_addr #1 {
  %2 = alloca %"struct.std::_Bit_reference", align 8
  %3 = alloca %"struct.std::__detail::_Node_iterator", align 8
  %4 = alloca %"struct.std::__detail::_Node_iterator", align 8
  %5 = alloca %"struct.std::_Bit_reference", align 8
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %2) #3
  %6 = sext i32 %0 to i64
  %7 = tail call { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40) @s, i64 noundef %6)
  %8 = extractvalue { ptr, i64 } %7, 0
  store ptr %8, ptr %2, align 8
  %9 = getelementptr inbounds i8, ptr %2, i64 8
  %10 = extractvalue { ptr, i64 } %7, 1
  store i64 %10, ptr %9, align 8
  %11 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt14_Bit_referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16) %2, i1 noundef zeroext true) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %2) #3
  %12 = call noundef nonnull align 8 dereferenceable(56) ptr @_ZNSt6vectorISt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEESaIS6_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @q, i64 noundef %6) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %13 = call ptr @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(56) %12) #3
  store ptr %13, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  %14 = call ptr @_ZNSt13unordered_setIiSt4hashIiESt8equal_toIiESaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(56) %12) #3
  store ptr %14, ptr %4, align 8
  %15 = call noundef zeroext i1 @_ZNSt8__detailneERKNS_19_Node_iterator_baseIiLb0EEES3_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  br i1 %15, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1
  %16 = getelementptr inbounds i8, ptr %5, i64 8
  br label %20

._crit_edge:                                      ; preds = %37, %1
  %.0.lcssa = phi i64 [ 0, %1 ], [ %.1, %37 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  %17 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @e, i64 noundef %6) #3
  %18 = load i64, ptr %17, align 8, !tbaa !5
  %19 = add nsw i64 %18, %.0.lcssa
  store i64 %19, ptr %17, align 8, !tbaa !5
  ret i64 %19

20:                                               ; preds = %.lr.ph, %37
  %.010 = phi i64 [ 0, %.lr.ph ], [ %.1, %37 ]
  %21 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt8__detail14_Node_iteratorIiLb1ELb0EEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #3
  %22 = load i32, ptr %21, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %5) #3
  %23 = sext i32 %22 to i64
  %24 = call { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40) @s, i64 noundef %23)
  %25 = extractvalue { ptr, i64 } %24, 0
  store ptr %25, ptr %5, align 8
  %26 = extractvalue { ptr, i64 } %24, 1
  store i64 %26, ptr %16, align 8
  %27 = call noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16) %5) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %5) #3
  br i1 %27, label %30, label %28

28:                                               ; preds = %20
  %29 = call noundef i64 @_Z4dfs4i(i32 noundef %22)
  br label %30

30:                                               ; preds = %28, %20
  %31 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @e, i64 noundef %23) #3
  %32 = load i64, ptr %31, align 8, !tbaa !5
  %33 = icmp sgt i64 %32, %.010
  br i1 %33, label %34, label %37

34:                                               ; preds = %30
  %35 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @e, i64 noundef %23) #3
  %36 = load i64, ptr %35, align 8, !tbaa !5
  br label %37

37:                                               ; preds = %34, %30
  %.1 = phi i64 [ %36, %34 ], [ %.010, %30 ]
  %38 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt8__detail14_Node_iteratorIiLb1ELb0EEppEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #3
  %39 = call noundef zeroext i1 @_ZNSt8__detailneERKNS_19_Node_iterator_baseIiLb0EEES3_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  br i1 %39, label %20, label %._crit_edge
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = { 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 = !{!"int", !7, i64 0}


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