; LLVM IR from CodersForLife/Data-Structures-Algorithms :: Dijkstra/Dijkstra.cpp (main)

; 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::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%class.Graph = type { i32, ptr, ptr, %"class.std::vector", ptr }
%"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 }

@.str.4 = external hidden unnamed_addr constant [3 x i8], align 1
@_ZSt3cin = external global %"class.std::basic_istream", 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
declare dso_local noundef i32 @_ZN5Graph8DijkstraEi(ptr noundef nonnull align 8 dereferenceable(56), i32 noundef) #1 align 2

; 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 i32, align 4
  %4 = alloca %class.Graph, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.4, ptr noundef %2)
  %12 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.4, ptr noundef %3)
  call void @llvm.lifetime.start.p0(i64 56, ptr %4) #5
  %13 = load i32, ptr %2, align 4, !tbaa !5
  call void @_ZN5GraphC2Ei(ptr noundef nonnull align 8 dereferenceable(56) %4, i32 noundef %13)
  br label %14

14:                                               ; preds = %28, %0
  %15 = load i32, ptr %3, align 4, !tbaa !5
  %16 = add nsw i32 %15, -1
  store i32 %16, ptr %3, align 4, !tbaa !5
  %17 = icmp ne i32 %15, 0
  br i1 %17, label %18, label %33

18:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  %19 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.4, ptr noundef %5)
          to label %20 unwind label %29

20:                                               ; preds = %18
  %21 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.4, ptr noundef %6)
          to label %22 unwind label %29

22:                                               ; preds = %20
  %23 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.4, ptr noundef %7)
          to label %24 unwind label %29

24:                                               ; preds = %22
  %25 = load i32, ptr %5, align 4, !tbaa !5
  %26 = load i32, ptr %6, align 4, !tbaa !5
  %27 = load i32, ptr %7, align 4, !tbaa !5
  invoke void @_ZN5Graph7addEdgeEiii(ptr noundef nonnull align 8 dereferenceable(56) %4, i32 noundef %25, i32 noundef %26, i32 noundef %27)
          to label %28 unwind label %29

28:                                               ; preds = %24
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  br label %14, !llvm.loop !9

29:                                               ; preds = %24, %22, %20, %18
  %30 = landingpad { ptr, i32 }
          cleanup
  %31 = extractvalue { ptr, i32 } %30, 0
  store ptr %31, ptr %8, align 8
  %32 = extractvalue { ptr, i32 } %30, 1
  store i32 %32, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  br label %44

33:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #5
  %34 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %10)
          to label %35 unwind label %40

35:                                               ; preds = %33
  %36 = load i32, ptr %10, align 4, !tbaa !5
  %37 = invoke noundef i32 @_ZN5Graph8DijkstraEi(ptr noundef nonnull align 8 dereferenceable(56) %4, i32 noundef %36)
          to label %38 unwind label %40

38:                                               ; preds = %35
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #5
  call void @_ZN5GraphD2Ev(ptr noundef nonnull align 8 dereferenceable(56) %4) #5
  call void @llvm.lifetime.end.p0(i64 56, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  %39 = load i32, ptr %1, align 4
  ret i32 %39

40:                                               ; preds = %35, %33
  %41 = landingpad { ptr, i32 }
          cleanup
  %42 = extractvalue { ptr, i32 } %41, 0
  store ptr %42, ptr %8, align 8
  %43 = extractvalue { ptr, i32 } %41, 1
  store i32 %43, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #5
  br label %44

44:                                               ; preds = %40, %29
  call void @_ZN5GraphD2Ev(ptr noundef nonnull align 8 dereferenceable(56) %4) #5
  call void @llvm.lifetime.end.p0(i64 56, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  br label %45

45:                                               ; preds = %44
  %46 = load ptr, ptr %8, align 8
  %47 = load i32, ptr %9, align 4
  %48 = insertvalue { ptr, i32 } poison, ptr %46, 0
  %49 = insertvalue { ptr, i32 } %48, i32 %47, 1
  resume { ptr, i32 } %49
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #3

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN5GraphC2Ei(ptr noundef nonnull align 8 dereferenceable(56), i32 noundef) unnamed_addr #1 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN5Graph7addEdgeEiii(ptr noundef nonnull align 8 dereferenceable(56), i32 noundef, i32 noundef, i32 noundef) #1 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #3

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN5GraphD2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #4 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 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 = { "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"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; 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::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%class.Graph = type { i32, ptr, ptr, %"class.std::vector", ptr }
%"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 }

@.str.4 = external hidden unnamed_addr constant [3 x i8], align 1
@_ZSt3cin = external global %"class.std::basic_istream", 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
declare dso_local noundef i32 @_ZN5Graph8DijkstraEi(ptr noundef nonnull align 8 dereferenceable(56), i32 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #2 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca %class.Graph, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #6
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.4, ptr noundef nonnull %1)
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.4, ptr noundef nonnull %2)
  call void @llvm.lifetime.start.p0(i64 56, ptr nonnull %3) #6
  %10 = load i32, ptr %1, align 4, !tbaa !5
  call void @_ZN5GraphC2Ei(ptr noundef nonnull align 8 dereferenceable(56) %3, i32 noundef %10)
  %11 = load i32, ptr %2, align 4, !tbaa !5
  %12 = add nsw i32 %11, -1
  store i32 %12, ptr %2, align 4, !tbaa !5
  %.not4 = icmp eq i32 %11, 0
  br i1 %.not4, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %0, %19
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #6
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.4, ptr noundef nonnull %4)
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.4, ptr noundef nonnull %5)
  %15 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.4, ptr noundef nonnull %6)
  %16 = load i32, ptr %4, align 4, !tbaa !5
  %17 = load i32, ptr %5, align 4, !tbaa !5
  %18 = load i32, ptr %6, align 4, !tbaa !5
  invoke void @_ZN5Graph7addEdgeEiii(ptr noundef nonnull align 8 dereferenceable(56) %3, i32 noundef %16, i32 noundef %17, i32 noundef %18)
          to label %19 unwind label %22

19:                                               ; preds = %.lr.ph
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #6
  %20 = load i32, ptr %2, align 4, !tbaa !5
  %21 = add nsw i32 %20, -1
  store i32 %21, ptr %2, align 4, !tbaa !5
  %.not = icmp eq i32 %20, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

22:                                               ; preds = %.lr.ph
  %23 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #6
  br label %31

._crit_edge:                                      ; preds = %19, %0
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %7) #6
  %24 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %7)
          to label %25 unwind label %29

25:                                               ; preds = %._crit_edge
  %26 = load i32, ptr %7, align 4, !tbaa !5
  %27 = invoke noundef i32 @_ZN5Graph8DijkstraEi(ptr noundef nonnull align 8 dereferenceable(56) %3, i32 noundef %26)
          to label %28 unwind label %29

28:                                               ; preds = %25
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #6
  call void @_ZN5GraphD2Ev(ptr noundef nonnull align 8 dereferenceable(56) %3) #6
  call void @llvm.lifetime.end.p0(i64 56, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  ret i32 0

29:                                               ; preds = %25, %._crit_edge
  %30 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #6
  br label %31

31:                                               ; preds = %29, %22
  %.pn = phi { ptr, i32 } [ %23, %22 ], [ %30, %29 ]
  call void @_ZN5GraphD2Ev(ptr noundef nonnull align 8 dereferenceable(56) %3) #6
  call void @llvm.lifetime.end.p0(i64 56, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  resume { ptr, i32 } %.pn
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN5GraphC2Ei(ptr noundef nonnull align 8 dereferenceable(56), i32 noundef) unnamed_addr #1 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN5Graph7addEdgeEiii(ptr noundef nonnull align 8 dereferenceable(56), i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #1 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #4

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN5GraphD2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #5 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 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 = { nofree nounwind "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 = { "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 = { 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 #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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass