; LLVM IR from ShahjalalShohag/code-library :: Graph Theory/Manhattan MST.ll (Z7Kruskalv)

; 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::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%struct.DSU = type { [200009 x i32] }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl" }
%"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl" = type { %"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl_data" }
%"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%struct.edge = type { i32, i32, i32 }
%"struct.std::pair" = type { i32, i32 }

@n = external dso_local global i32, align 4
@g = external dso_local global [200009 x %"class.std::vector"], align 16
@dsu = external dso_local global %struct.DSU, align 4
@edges = external dso_local global %"class.std::vector.0", align 8

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

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

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z7Kruskalv() #1 {
  %1 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %2 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %3 = alloca i64, align 8
  %4 = alloca ptr, align 8
  %5 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %6 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %7 = alloca %struct.edge, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca %"struct.std::pair", align 4
  %12 = load i32, ptr @n, align 4, !tbaa !5
  call void @_ZN3DSU4initEi(ptr noundef nonnull align 4 dereferenceable(800036) @dsu, i32 noundef %12)
  %13 = call ptr @_ZNSt6vectorI4edgeSaIS0_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) @edges) #6
  %14 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %1, i32 0, i32 0
  store ptr %13, ptr %14, align 8
  %15 = call ptr @_ZNSt6vectorI4edgeSaIS0_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) @edges) #6
  %16 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %2, i32 0, i32 0
  store ptr %15, ptr %16, align 8
  %17 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %1, i32 0, i32 0
  %18 = load ptr, ptr %17, align 8
  %19 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %2, i32 0, i32 0
  %20 = load ptr, ptr %19, align 8
  call void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIP4edgeSt6vectorIS2_SaIS2_EEEEEvT_S8_(ptr %18, ptr %20)
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #6
  store i64 0, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #6
  store ptr @edges, ptr %4, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #6
  %21 = call ptr @_ZNSt6vectorI4edgeSaIS0_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) @edges) #6
  %22 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %5, i32 0, i32 0
  store ptr %21, ptr %22, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #6
  %23 = call ptr @_ZNSt6vectorI4edgeSaIS0_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) @edges) #6
  %24 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %6, i32 0, i32 0
  store ptr %23, ptr %24, align 8
  br label %25

25:                                               ; preds = %52, %0
  %26 = call noundef zeroext i1 @_ZN9__gnu_cxxneIP4edgeSt6vectorIS1_SaIS1_EEEEbRKNS_17__normal_iteratorIT_T0_EESB_(ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull align 8 dereferenceable(8) %6) #6
  br i1 %26, label %28, label %27

27:                                               ; preds = %25
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #6
  br label %54

28:                                               ; preds = %25
  call void @llvm.lifetime.start.p0(i64 12, ptr %7) #6
  %29 = call noundef nonnull align 4 dereferenceable(12) ptr @_ZNK9__gnu_cxx17__normal_iteratorIP4edgeSt6vectorIS1_SaIS1_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %5) #6
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %7, ptr align 4 %29, i64 12, i1 false), !tbaa.struct !13
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #6
  %30 = getelementptr inbounds %struct.edge, ptr %7, i32 0, i32 0
  %31 = load i32, ptr %30, align 4, !tbaa !14
  store i32 %31, ptr %8, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #6
  %32 = getelementptr inbounds %struct.edge, ptr %7, i32 0, i32 1
  %33 = load i32, ptr %32, align 4, !tbaa !16
  store i32 %33, ptr %9, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #6
  %34 = getelementptr inbounds %struct.edge, ptr %7, i32 0, i32 2
  %35 = load i32, ptr %34, align 4, !tbaa !17
  store i32 %35, ptr %10, align 4, !tbaa !5
  %36 = load i32, ptr %8, align 4, !tbaa !5
  %37 = call noundef i32 @_ZN3DSU4findEi(ptr noundef nonnull align 4 dereferenceable(800036) @dsu, i32 noundef %36)
  %38 = load i32, ptr %9, align 4, !tbaa !5
  %39 = call noundef i32 @_ZN3DSU4findEi(ptr noundef nonnull align 4 dereferenceable(800036) @dsu, i32 noundef %38)
  %40 = icmp ne i32 %37, %39
  br i1 %40, label %41, label %51

41:                                               ; preds = %28
  %42 = load i32, ptr %10, align 4, !tbaa !5
  %43 = sext i32 %42 to i64
  %44 = load i64, ptr %3, align 8, !tbaa !9
  %45 = add nsw i64 %44, %43
  store i64 %45, ptr %3, align 8, !tbaa !9
  %46 = load i32, ptr %8, align 4, !tbaa !5
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds [200009 x %"class.std::vector"], ptr @g, i64 0, i64 %47
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #6
  call void @_ZNSt4pairIiiEC2IRiS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8) %11, ptr noundef nonnull align 4 dereferenceable(4) %9, ptr noundef nonnull align 4 dereferenceable(4) %10)
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %48, ptr noundef nonnull align 4 dereferenceable(8) %11)
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #6
  %49 = load i32, ptr %8, align 4, !tbaa !5
  %50 = load i32, ptr %9, align 4, !tbaa !5
  call void @_ZN3DSU5mergeEii(ptr noundef nonnull align 4 dereferenceable(800036) @dsu, i32 noundef %49, i32 noundef %50)
  br label %51

51:                                               ; preds = %41, %28
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #6
  call void @llvm.lifetime.end.p0(i64 12, ptr %7) #6
  br label %52

52:                                               ; preds = %51
  %53 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIP4edgeSt6vectorIS1_SaIS1_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %5) #6
  br label %25

54:                                               ; preds = %27
  %55 = load i64, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #6
  ret i64 %55
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN3DSU4initEi(ptr noundef nonnull align 4 dereferenceable(800036), i32 noundef) #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIP4edgeSt6vectorIS2_SaIS2_EEEEEvT_S8_(ptr, ptr) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorI4edgeSaIS0_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorI4edgeSaIS0_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_cxxneIP4edgeSt6vectorIS1_SaIS1_EEEEbRKNS_17__normal_iteratorIT_T0_EESB_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(12) ptr @_ZNK9__gnu_cxx17__normal_iteratorIP4edgeSt6vectorIS1_SaIS1_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 uwtable
declare dso_local noundef i32 @_ZN3DSU4findEi(ptr noundef nonnull align 4 dereferenceable(800036), i32 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(8)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIiiEC2IRiS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3DSU5mergeEii(ptr noundef nonnull align 4 dereferenceable(800036), i32 noundef, i32 noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIP4edgeSt6vectorIS1_SaIS1_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #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 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { inlinehint mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #5 = { 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 = !{!"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}
!13 = !{i64 0, i64 4, !5, i64 4, i64 4, !5, i64 8, i64 4, !5}
!14 = !{!15, !6, i64 0}
!15 = !{!"_ZTS4edge", !6, i64 0, !6, i64 4, !6, i64 8}
!16 = !{!15, !6, i64 4}
!17 = !{!15, !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::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%struct.DSU = type { [200009 x i32] }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl" }
%"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl" = type { %"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl_data" }
%"struct.std::_Vector_base<edge, std::allocator<edge>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%"struct.std::pair" = type { i32, i32 }

@n = external dso_local local_unnamed_addr global i32, align 4
@g = external dso_local global [200009 x %"class.std::vector"], align 16
@dsu = external dso_local global %struct.DSU, align 4
@edges = external dso_local global %"class.std::vector.0", align 8

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

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

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z7Kruskalv() local_unnamed_addr #1 {
  %1 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %2 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca %"struct.std::pair", align 4
  %6 = load i32, ptr @n, align 4, !tbaa !5
  tail call void @_ZN3DSU4initEi(ptr noundef nonnull align 4 dereferenceable(800036) @dsu, i32 noundef %6)
  %7 = tail call ptr @_ZNSt6vectorI4edgeSaIS0_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) @edges) #5
  %8 = tail call ptr @_ZNSt6vectorI4edgeSaIS0_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) @edges) #5
  tail call void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIP4edgeSt6vectorIS2_SaIS2_EEEEEvT_S8_(ptr %7, ptr %8)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #5
  %9 = tail call ptr @_ZNSt6vectorI4edgeSaIS0_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) @edges) #5
  store ptr %9, ptr %1, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #5
  %10 = tail call ptr @_ZNSt6vectorI4edgeSaIS0_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) @edges) #5
  store ptr %10, ptr %2, align 8
  %11 = call noundef zeroext i1 @_ZN9__gnu_cxxneIP4edgeSt6vectorIS1_SaIS1_EEEEbRKNS_17__normal_iteratorIT_T0_EESB_(ptr noundef nonnull align 8 dereferenceable(8) %1, ptr noundef nonnull align 8 dereferenceable(8) %2) #5
  br i1 %11, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %23, %0
  %.0.lcssa = phi i64 [ 0, %0 ], [ %.1, %23 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #5
  ret i64 %.0.lcssa

.lr.ph:                                           ; preds = %0, %23
  %.07 = phi i64 [ %.1, %23 ], [ 0, %0 ]
  %12 = call noundef nonnull align 4 dereferenceable(12) ptr @_ZNK9__gnu_cxx17__normal_iteratorIP4edgeSt6vectorIS1_SaIS1_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %1) #5
  %.sroa.0.0.copyload = load i32, ptr %12, align 4, !tbaa !5
  %.sroa.4.0..sroa_idx = getelementptr inbounds i8, ptr %12, i64 4
  %.sroa.4.0.copyload = load i32, ptr %.sroa.4.0..sroa_idx, align 4, !tbaa !5
  %.sroa.5.0..sroa_idx = getelementptr inbounds i8, ptr %12, i64 8
  %.sroa.5.0.copyload = load i32, ptr %.sroa.5.0..sroa_idx, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #5
  store i32 %.sroa.4.0.copyload, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #5
  store i32 %.sroa.5.0.copyload, ptr %4, align 4, !tbaa !5
  %13 = call noundef i32 @_ZN3DSU4findEi(ptr noundef nonnull align 4 dereferenceable(800036) @dsu, i32 noundef %.sroa.0.0.copyload)
  %14 = load i32, ptr %3, align 4, !tbaa !5
  %15 = call noundef i32 @_ZN3DSU4findEi(ptr noundef nonnull align 4 dereferenceable(800036) @dsu, i32 noundef %14)
  %.not = icmp eq i32 %13, %15
  br i1 %.not, label %23, label %16

16:                                               ; preds = %.lr.ph
  %17 = load i32, ptr %4, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = add nsw i64 %.07, %18
  %20 = sext i32 %.sroa.0.0.copyload to i64
  %21 = getelementptr inbounds [200009 x %"class.std::vector"], ptr @g, i64 0, i64 %20
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #5
  call void @_ZNSt4pairIiiEC2IRiS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8) %5, ptr noundef nonnull align 4 dereferenceable(4) %3, ptr noundef nonnull align 4 dereferenceable(4) %4)
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %21, ptr noundef nonnull align 4 dereferenceable(8) %5)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #5
  %22 = load i32, ptr %3, align 4, !tbaa !5
  call void @_ZN3DSU5mergeEii(ptr noundef nonnull align 4 dereferenceable(800036) @dsu, i32 noundef %.sroa.0.0.copyload, i32 noundef %22)
  br label %23

23:                                               ; preds = %16, %.lr.ph
  %.1 = phi i64 [ %19, %16 ], [ %.07, %.lr.ph ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #5
  %24 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIP4edgeSt6vectorIS1_SaIS1_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %1) #5
  %25 = call noundef zeroext i1 @_ZN9__gnu_cxxneIP4edgeSt6vectorIS1_SaIS1_EEEEbRKNS_17__normal_iteratorIT_T0_EESB_(ptr noundef nonnull align 8 dereferenceable(8) %1, ptr noundef nonnull align 8 dereferenceable(8) %2) #5
  br i1 %25, label %.lr.ph, label %._crit_edge
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN3DSU4initEi(ptr noundef nonnull align 4 dereferenceable(800036), i32 noundef) local_unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIP4edgeSt6vectorIS2_SaIS2_EEEEEvT_S8_(ptr, ptr) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorI4edgeSaIS0_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorI4edgeSaIS0_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_cxxneIP4edgeSt6vectorIS1_SaIS1_EEEEbRKNS_17__normal_iteratorIT_T0_EESB_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(12) ptr @_ZNK9__gnu_cxx17__normal_iteratorIP4edgeSt6vectorIS1_SaIS1_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN3DSU4findEi(ptr noundef nonnull align 4 dereferenceable(800036), i32 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIiiEC2IRiS2_TnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS4_S5_EEEbE4typeELb1EEEOS4_OS5_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3DSU5mergeEii(ptr noundef nonnull align 4 dereferenceable(800036), i32 noundef, i32 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIP4edgeSt6vectorIS1_SaIS1_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) 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 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { inlinehint mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #5 = { nounwind }

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

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


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