; LLVM IR from ritikbanger/Hacktoberfest2022-DSA :: 17. Graph (traversalbfs)

; 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<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 }

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z7addEdgePSt6vectorIiSaIiEEii(ptr noundef, i32 noundef, i32 noundef) #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z3bfsPSt6vectorIiSaIiEEii(ptr noundef, i32 noundef, i32 noundef) #0

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

declare i32 @__gxx_personality_v0(...)

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z4bfs2PSt6vectorIiSaIiEEi(ptr noundef, i32 noundef) #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #2 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  store i32 4, ptr %2, align 4, !tbaa !5
  %7 = load i32, ptr %2, align 4, !tbaa !5
  %8 = zext i32 %7 to i64
  %9 = call ptr @llvm.stacksave.p0()
  store ptr %9, ptr %3, align 8
  %10 = alloca %"class.std::vector", i64 %8, align 16
  store i64 %8, ptr %4, align 8
  %11 = icmp eq i64 %8, 0
  br i1 %11, label %18, label %12

12:                                               ; preds = %0
  %13 = getelementptr inbounds %"class.std::vector", ptr %10, i64 %8
  br label %14

14:                                               ; preds = %14, %12
  %15 = phi ptr [ %10, %12 ], [ %16, %14 ]
  call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %15) #5
  %16 = getelementptr inbounds %"class.std::vector", ptr %15, i64 1
  %17 = icmp eq ptr %16, %13
  br i1 %17, label %18, label %14

18:                                               ; preds = %14, %0
  invoke void @_Z7addEdgePSt6vectorIiSaIiEEii(ptr noundef %10, i32 noundef 0, i32 noundef 1)
          to label %19 unwind label %29

19:                                               ; preds = %18
  invoke void @_Z7addEdgePSt6vectorIiSaIiEEii(ptr noundef %10, i32 noundef 0, i32 noundef 2)
          to label %20 unwind label %29

20:                                               ; preds = %19
  invoke void @_Z7addEdgePSt6vectorIiSaIiEEii(ptr noundef %10, i32 noundef 1, i32 noundef 2)
          to label %21 unwind label %29

21:                                               ; preds = %20
  invoke void @_Z7addEdgePSt6vectorIiSaIiEEii(ptr noundef %10, i32 noundef 1, i32 noundef 3)
          to label %22 unwind label %29

22:                                               ; preds = %21
  %23 = load i32, ptr %2, align 4, !tbaa !5
  invoke void @_Z3bfsPSt6vectorIiSaIiEEii(ptr noundef %10, i32 noundef %23, i32 noundef 0)
          to label %24 unwind label %29

24:                                               ; preds = %22
  %25 = load i32, ptr %2, align 4, !tbaa !5
  invoke void @_Z4bfs2PSt6vectorIiSaIiEEi(ptr noundef %10, i32 noundef %25)
          to label %26 unwind label %29

26:                                               ; preds = %24
  store i32 0, ptr %1, align 4
  %27 = getelementptr inbounds %"class.std::vector", ptr %10, i64 %8
  %28 = icmp eq ptr %10, %27
  br i1 %28, label %39, label %35

29:                                               ; preds = %24, %22, %21, %20, %19, %18
  %30 = landingpad { ptr, i32 }
          cleanup
  %31 = extractvalue { ptr, i32 } %30, 0
  store ptr %31, ptr %5, align 8
  %32 = extractvalue { ptr, i32 } %30, 1
  store i32 %32, ptr %6, align 4
  %33 = getelementptr inbounds %"class.std::vector", ptr %10, i64 %8
  %34 = icmp eq ptr %10, %33
  br i1 %34, label %46, label %42

35:                                               ; preds = %35, %26
  %36 = phi ptr [ %27, %26 ], [ %37, %35 ]
  %37 = getelementptr inbounds %"class.std::vector", ptr %36, i64 -1
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %37) #5
  %38 = icmp eq ptr %37, %10
  br i1 %38, label %39, label %35

39:                                               ; preds = %35, %26
  %40 = load ptr, ptr %3, align 8
  call void @llvm.stackrestore.p0(ptr %40)
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  %41 = load i32, ptr %1, align 4
  ret i32 %41

42:                                               ; preds = %42, %29
  %43 = phi ptr [ %33, %29 ], [ %44, %42 ]
  %44 = getelementptr inbounds %"class.std::vector", ptr %43, i64 -1
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %44) #5
  %45 = icmp eq ptr %44, %10
  br i1 %45, label %46, label %42

46:                                               ; preds = %42, %29
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  br label %47

47:                                               ; preds = %46
  %48 = load ptr, ptr %5, align 8
  %49 = load i32, ptr %6, align 4
  %50 = insertvalue { ptr, i32 } poison, ptr %48, 0
  %51 = insertvalue { ptr, i32 } %50, i32 %49, 1
  resume { ptr, i32 } %51
}

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #4 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(ptr) #3

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 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 #3 = { nocallback nofree nosync nounwind willreturn }
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 = { 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"}


; 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<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 }

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z7addEdgePSt6vectorIiSaIiEEii(ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z3bfsPSt6vectorIiSaIiEEii(ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z4bfs2PSt6vectorIiSaIiEEi(ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #1 personality ptr @__gxx_personality_v0 {
  %1 = alloca [4 x %"class.std::vector"], align 16
  call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %1) #3
  %.ptr.1 = getelementptr inbounds i8, ptr %1, i64 24
  call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %.ptr.1) #3
  %.ptr.2 = getelementptr inbounds i8, ptr %1, i64 48
  call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %.ptr.2) #3
  %.ptr.3 = getelementptr inbounds i8, ptr %1, i64 72
  call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %.ptr.3) #3
  invoke void @_Z7addEdgePSt6vectorIiSaIiEEii(ptr noundef nonnull %1, i32 noundef 0, i32 noundef 1)
          to label %2 unwind label %11

2:                                                ; preds = %0
  invoke void @_Z7addEdgePSt6vectorIiSaIiEEii(ptr noundef nonnull %1, i32 noundef 0, i32 noundef 2)
          to label %3 unwind label %11

3:                                                ; preds = %2
  invoke void @_Z7addEdgePSt6vectorIiSaIiEEii(ptr noundef nonnull %1, i32 noundef 1, i32 noundef 2)
          to label %4 unwind label %11

4:                                                ; preds = %3
  invoke void @_Z7addEdgePSt6vectorIiSaIiEEii(ptr noundef nonnull %1, i32 noundef 1, i32 noundef 3)
          to label %5 unwind label %11

5:                                                ; preds = %4
  invoke void @_Z3bfsPSt6vectorIiSaIiEEii(ptr noundef nonnull %1, i32 noundef 4, i32 noundef 0)
          to label %6 unwind label %11

6:                                                ; preds = %5
  invoke void @_Z4bfs2PSt6vectorIiSaIiEEi(ptr noundef nonnull %1, i32 noundef 4)
          to label %7 unwind label %11

7:                                                ; preds = %6
  %8 = getelementptr inbounds i8, ptr %1, i64 72
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %8) #3
  %9 = getelementptr inbounds i8, ptr %1, i64 48
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %9) #3
  %10 = getelementptr inbounds i8, ptr %1, i64 24
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %10) #3
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %1) #3
  ret i32 0

11:                                               ; preds = %6, %5, %4, %3, %2, %0
  %12 = landingpad { ptr, i32 }
          cleanup
  %13 = getelementptr inbounds i8, ptr %1, i64 72
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %13) #3
  %14 = getelementptr inbounds i8, ptr %1, i64 48
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %14) #3
  %15 = getelementptr inbounds i8, ptr %1, i64 24
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %15) #3
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %1) #3
  resume { ptr, i32 } %12
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(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 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 #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)"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass