; LLVM IR from codemistic/Data-Structures-and-Algorithms :: graph (code16)

; 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 }

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z8add_edgePSt6vectorISt4pairIiiESaIS1_EEiii(ptr noundef, i32 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

; 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 @_Z8dijstra1PSt6vectorISt4pairIiiESaIS1_EEii(ptr noundef, i32 noundef, i32 noundef) #0

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z8dijstra2PSt6vectorISt4pairIiiESaIS1_EEii(ptr noundef, i32 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
  %7 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  store i32 5, ptr %2, align 4, !tbaa !5
  %8 = load i32, ptr %2, align 4, !tbaa !5
  %9 = zext i32 %8 to i64
  %10 = call ptr @llvm.stacksave.p0()
  store ptr %10, ptr %3, align 8
  %11 = alloca %"class.std::vector", i64 %9, align 16
  store i64 %9, ptr %4, align 8
  %12 = icmp eq i64 %9, 0
  br i1 %12, label %19, label %13

13:                                               ; preds = %0
  %14 = getelementptr inbounds %"class.std::vector", ptr %11, i64 %9
  br label %15

15:                                               ; preds = %15, %13
  %16 = phi ptr [ %11, %13 ], [ %17, %15 ]
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %16) #5
  %17 = getelementptr inbounds %"class.std::vector", ptr %16, i64 1
  %18 = icmp eq ptr %17, %14
  br i1 %18, label %19, label %15

19:                                               ; preds = %15, %0
  invoke void @_Z8add_edgePSt6vectorISt4pairIiiESaIS1_EEiii(ptr noundef %11, i32 noundef 0, i32 noundef 1, i32 noundef 3)
          to label %20 unwind label %35

20:                                               ; preds = %19
  invoke void @_Z8add_edgePSt6vectorISt4pairIiiESaIS1_EEiii(ptr noundef %11, i32 noundef 0, i32 noundef 2, i32 noundef 1)
          to label %21 unwind label %35

21:                                               ; preds = %20
  invoke void @_Z8add_edgePSt6vectorISt4pairIiiESaIS1_EEiii(ptr noundef %11, i32 noundef 1, i32 noundef 2, i32 noundef 7)
          to label %22 unwind label %35

22:                                               ; preds = %21
  invoke void @_Z8add_edgePSt6vectorISt4pairIiiESaIS1_EEiii(ptr noundef %11, i32 noundef 2, i32 noundef 3, i32 noundef 2)
          to label %23 unwind label %35

23:                                               ; preds = %22
  invoke void @_Z8add_edgePSt6vectorISt4pairIiiESaIS1_EEiii(ptr noundef %11, i32 noundef 1, i32 noundef 3, i32 noundef 5)
          to label %24 unwind label %35

24:                                               ; preds = %23
  invoke void @_Z8add_edgePSt6vectorISt4pairIiiESaIS1_EEiii(ptr noundef %11, i32 noundef 1, i32 noundef 4, i32 noundef 1)
          to label %25 unwind label %35

25:                                               ; preds = %24
  invoke void @_Z8add_edgePSt6vectorISt4pairIiiESaIS1_EEiii(ptr noundef %11, i32 noundef 3, i32 noundef 4, i32 noundef 7)
          to label %26 unwind label %35

26:                                               ; preds = %25
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  store i32 2, ptr %7, align 4, !tbaa !5
  %27 = load i32, ptr %2, align 4, !tbaa !5
  %28 = load i32, ptr %7, align 4, !tbaa !5
  invoke void @_Z8dijstra1PSt6vectorISt4pairIiiESaIS1_EEii(ptr noundef %11, i32 noundef %27, i32 noundef %28)
          to label %29 unwind label %39

29:                                               ; preds = %26
  %30 = load i32, ptr %2, align 4, !tbaa !5
  %31 = load i32, ptr %7, align 4, !tbaa !5
  invoke void @_Z8dijstra2PSt6vectorISt4pairIiiESaIS1_EEii(ptr noundef %11, i32 noundef %30, i32 noundef %31)
          to label %32 unwind label %39

32:                                               ; preds = %29
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  %33 = getelementptr inbounds %"class.std::vector", ptr %11, i64 %9
  %34 = icmp eq ptr %11, %33
  br i1 %34, label %47, label %43

35:                                               ; preds = %25, %24, %23, %22, %21, %20, %19
  %36 = landingpad { ptr, i32 }
          cleanup
  %37 = extractvalue { ptr, i32 } %36, 0
  store ptr %37, ptr %5, align 8
  %38 = extractvalue { ptr, i32 } %36, 1
  store i32 %38, ptr %6, align 4
  br label %50

39:                                               ; preds = %29, %26
  %40 = landingpad { ptr, i32 }
          cleanup
  %41 = extractvalue { ptr, i32 } %40, 0
  store ptr %41, ptr %5, align 8
  %42 = extractvalue { ptr, i32 } %40, 1
  store i32 %42, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  br label %50

43:                                               ; preds = %43, %32
  %44 = phi ptr [ %33, %32 ], [ %45, %43 ]
  %45 = getelementptr inbounds %"class.std::vector", ptr %44, i64 -1
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %45) #5
  %46 = icmp eq ptr %45, %11
  br i1 %46, label %47, label %43

47:                                               ; preds = %43, %32
  %48 = load ptr, ptr %3, align 8
  call void @llvm.stackrestore.p0(ptr %48)
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  %49 = load i32, ptr %1, align 4
  ret i32 %49

50:                                               ; preds = %39, %35
  %51 = getelementptr inbounds %"class.std::vector", ptr %11, i64 %9
  %52 = icmp eq ptr %11, %51
  br i1 %52, label %57, label %53

53:                                               ; preds = %53, %50
  %54 = phi ptr [ %51, %50 ], [ %55, %53 ]
  %55 = getelementptr inbounds %"class.std::vector", ptr %54, i64 -1
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %55) #5
  %56 = icmp eq ptr %55, %11
  br i1 %56, label %57, label %53

57:                                               ; preds = %53, %50
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  br label %58

58:                                               ; preds = %57
  %59 = load ptr, ptr %5, align 8
  %60 = load i32, ptr %6, align 4
  %61 = insertvalue { ptr, i32 } poison, ptr %59, 0
  %62 = insertvalue { ptr, i32 } %61, i32 %60, 1
  resume { ptr, i32 } %62
}

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(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<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 }

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z8add_edgePSt6vectorISt4pairIiiESaIS1_EEiii(ptr noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z8dijstra1PSt6vectorISt4pairIiiESaIS1_EEii(ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z8dijstra2PSt6vectorISt4pairIiiESaIS1_EEii(ptr noundef, i32 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 [5 x %"class.std::vector"], align 16
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %1) #3
  %.ptr.1 = getelementptr inbounds i8, ptr %1, i64 24
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %.ptr.1) #3
  %.ptr.2 = getelementptr inbounds i8, ptr %1, i64 48
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %.ptr.2) #3
  %.ptr.3 = getelementptr inbounds i8, ptr %1, i64 72
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %.ptr.3) #3
  %.ptr.4 = getelementptr inbounds i8, ptr %1, i64 96
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %.ptr.4) #3
  invoke void @_Z8add_edgePSt6vectorISt4pairIiiESaIS1_EEiii(ptr noundef nonnull %1, i32 noundef 0, i32 noundef 1, i32 noundef 3)
          to label %2 unwind label %15

2:                                                ; preds = %0
  invoke void @_Z8add_edgePSt6vectorISt4pairIiiESaIS1_EEiii(ptr noundef nonnull %1, i32 noundef 0, i32 noundef 2, i32 noundef 1)
          to label %3 unwind label %15

3:                                                ; preds = %2
  invoke void @_Z8add_edgePSt6vectorISt4pairIiiESaIS1_EEiii(ptr noundef nonnull %1, i32 noundef 1, i32 noundef 2, i32 noundef 7)
          to label %4 unwind label %15

4:                                                ; preds = %3
  invoke void @_Z8add_edgePSt6vectorISt4pairIiiESaIS1_EEiii(ptr noundef nonnull %1, i32 noundef 2, i32 noundef 3, i32 noundef 2)
          to label %5 unwind label %15

5:                                                ; preds = %4
  invoke void @_Z8add_edgePSt6vectorISt4pairIiiESaIS1_EEiii(ptr noundef nonnull %1, i32 noundef 1, i32 noundef 3, i32 noundef 5)
          to label %6 unwind label %15

6:                                                ; preds = %5
  invoke void @_Z8add_edgePSt6vectorISt4pairIiiESaIS1_EEiii(ptr noundef nonnull %1, i32 noundef 1, i32 noundef 4, i32 noundef 1)
          to label %7 unwind label %15

7:                                                ; preds = %6
  invoke void @_Z8add_edgePSt6vectorISt4pairIiiESaIS1_EEiii(ptr noundef nonnull %1, i32 noundef 3, i32 noundef 4, i32 noundef 7)
          to label %8 unwind label %15

8:                                                ; preds = %7
  invoke void @_Z8dijstra1PSt6vectorISt4pairIiiESaIS1_EEii(ptr noundef nonnull %1, i32 noundef 5, i32 noundef 2)
          to label %9 unwind label %17

9:                                                ; preds = %8
  invoke void @_Z8dijstra2PSt6vectorISt4pairIiiESaIS1_EEii(ptr noundef nonnull %1, i32 noundef 5, i32 noundef 2)
          to label %10 unwind label %17

10:                                               ; preds = %9
  %11 = getelementptr inbounds i8, ptr %1, i64 96
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %11) #3
  %12 = getelementptr inbounds i8, ptr %1, i64 72
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %12) #3
  %13 = getelementptr inbounds i8, ptr %1, i64 48
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %13) #3
  %14 = getelementptr inbounds i8, ptr %1, i64 24
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %14) #3
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %1) #3
  ret i32 0

15:                                               ; preds = %7, %6, %5, %4, %3, %2, %0
  %16 = landingpad { ptr, i32 }
          cleanup
  br label %19

17:                                               ; preds = %9, %8
  %18 = landingpad { ptr, i32 }
          cleanup
  br label %19

19:                                               ; preds = %17, %15
  %.pn = phi { ptr, i32 } [ %18, %17 ], [ %16, %15 ]
  %20 = getelementptr inbounds i8, ptr %1, i64 96
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %20) #3
  %21 = getelementptr inbounds i8, ptr %1, i64 72
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %21) #3
  %22 = getelementptr inbounds i8, ptr %1, i64 48
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %22) #3
  %23 = getelementptr inbounds i8, ptr %1, i64 24
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %23) #3
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %1) #3
  resume { ptr, i32 } %.pn
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_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 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