; LLVM IR from PetarV-/Algorithms :: Graph Algorithms/Heavy-Light Decomposition.ll (Z3HLDiii)

; 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"

%struct.Node = type { %"class.std::vector" }
%"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 }
%struct.TreeNode = type { i32, i32, i32, i32 }

@graf = external dso_local global [1000001 x %struct.Node], align 16
@T = external dso_local global [1000001 x %struct.TreeNode], align 16

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 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 uwtable
define dso_local void @_Z3HLDiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) #2 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !5
  %10 = load i32, ptr %6, align 4, !tbaa !5
  %11 = load i32, ptr %4, align 4, !tbaa !5
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds [1000001 x %struct.TreeNode], ptr @T, i64 0, i64 %12
  %14 = getelementptr inbounds %struct.TreeNode, ptr %13, i32 0, i32 2
  store i32 %10, ptr %14, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !5
  br label %15

15:                                               ; preds = %66, %3
  %16 = load i32, ptr %7, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = load i32, ptr %4, align 4, !tbaa !5
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds [1000001 x %struct.Node], ptr @graf, i64 0, i64 %19
  %21 = getelementptr inbounds %struct.Node, ptr %20, i32 0, i32 0
  %22 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %21) #3
  %23 = icmp ult i64 %17, %22
  br i1 %23, label %25, label %24

24:                                               ; preds = %15
  store i32 2, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %69

25:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  %26 = load i32, ptr %4, align 4, !tbaa !5
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds [1000001 x %struct.Node], ptr @graf, i64 0, i64 %27
  %29 = getelementptr inbounds %struct.Node, ptr %28, i32 0, i32 0
  %30 = load i32, ptr %7, align 4, !tbaa !5
  %31 = sext i32 %30 to i64
  %32 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %29, i64 noundef %31) #3
  %33 = load i32, ptr %32, align 4, !tbaa !5
  store i32 %33, ptr %9, align 4, !tbaa !5
  %34 = load i32, ptr %9, align 4, !tbaa !5
  %35 = load i32, ptr %5, align 4, !tbaa !5
  %36 = icmp eq i32 %34, %35
  br i1 %36, label %37, label %38

37:                                               ; preds = %25
  store i32 4, ptr %8, align 4
  br label %63

38:                                               ; preds = %25
  %39 = load i32, ptr %9, align 4, !tbaa !5
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds [1000001 x %struct.TreeNode], ptr @T, i64 0, i64 %40
  %42 = getelementptr inbounds %struct.TreeNode, ptr %41, i32 0, i32 3
  %43 = load i32, ptr %42, align 4, !tbaa !11
  %44 = sitofp i32 %43 to double
  %45 = fmul double %44, 1.000000e+00
  %46 = load i32, ptr %4, align 4, !tbaa !5
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds [1000001 x %struct.TreeNode], ptr @T, i64 0, i64 %47
  %49 = getelementptr inbounds %struct.TreeNode, ptr %48, i32 0, i32 3
  %50 = load i32, ptr %49, align 4, !tbaa !11
  %51 = sitofp i32 %50 to double
  %52 = fmul double %51, 5.000000e-01
  %53 = fcmp ogt double %45, %52
  br i1 %53, label %54, label %58

54:                                               ; preds = %38
  %55 = load i32, ptr %9, align 4, !tbaa !5
  %56 = load i32, ptr %4, align 4, !tbaa !5
  %57 = load i32, ptr %6, align 4, !tbaa !5
  call void @_Z3HLDiii(i32 noundef %55, i32 noundef %56, i32 noundef %57)
  br label %62

58:                                               ; preds = %38
  %59 = load i32, ptr %9, align 4, !tbaa !5
  %60 = load i32, ptr %4, align 4, !tbaa !5
  %61 = load i32, ptr %9, align 4, !tbaa !5
  call void @_Z3HLDiii(i32 noundef %59, i32 noundef %60, i32 noundef %61)
  br label %62

62:                                               ; preds = %58, %54
  store i32 0, ptr %8, align 4
  br label %63

63:                                               ; preds = %62, %37
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  %64 = load i32, ptr %8, align 4
  switch i32 %64, label %70 [
    i32 0, label %65
    i32 4, label %66
  ]

65:                                               ; preds = %63
  br label %66

66:                                               ; preds = %65, %63
  %67 = load i32, ptr %7, align 4, !tbaa !5
  %68 = add nsw i32 %67, 1
  store i32 %68, ptr %7, align 4, !tbaa !5
  br label %15, !llvm.loop !12

69:                                               ; preds = %24
  ret void

70:                                               ; preds = %63
  unreachable
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #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, !6, i64 8}
!10 = !{!"_ZTS8TreeNode", !6, i64 0, !6, i64 4, !6, i64 8, !6, i64 12}
!11 = !{!10, !6, i64 12}
!12 = distinct !{!12, !13}
!13 = !{!"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"

%struct.Node = type { %"class.std::vector" }
%"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 }
%struct.TreeNode = type { i32, i32, i32, i32 }

@graf = external dso_local global [1000001 x %struct.Node], align 16
@T = external dso_local local_unnamed_addr global [1000001 x %struct.TreeNode], align 16

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z3HLDiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = sext i32 %0 to i64
  %5 = getelementptr inbounds [1000001 x %struct.TreeNode], ptr @T, i64 0, i64 %4
  %6 = getelementptr inbounds i8, ptr %5, i64 8
  store i32 %2, ptr %6, align 8, !tbaa !5
  %7 = getelementptr inbounds [1000001 x %struct.Node], ptr @graf, i64 0, i64 %4
  %8 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %7) #1
  %.not = icmp eq i64 %8, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3
  %9 = getelementptr inbounds i8, ptr %5, i64 12
  br label %10

._crit_edge:                                      ; preds = %22, %3
  ret void

10:                                               ; preds = %.lr.ph, %22
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %22 ]
  %11 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %indvars.iv) #1
  %12 = load i32, ptr %11, align 4, !tbaa !10
  %13 = icmp eq i32 %12, %1
  br i1 %13, label %22, label %.sink.split

.sink.split:                                      ; preds = %10
  %14 = sext i32 %12 to i64
  %15 = getelementptr inbounds [1000001 x %struct.TreeNode], ptr @T, i64 0, i64 %14, i32 3
  %16 = load i32, ptr %15, align 4, !tbaa !11
  %17 = sitofp i32 %16 to double
  %18 = load i32, ptr %9, align 4, !tbaa !11
  %19 = sitofp i32 %18 to double
  %20 = fmul double %19, 5.000000e-01
  %21 = fcmp olt double %20, %17
  %. = select i1 %21, i32 %2, i32 %12
  tail call void @_Z3HLDiii(i32 noundef %12, i32 noundef %0, i32 noundef %.)
  br label %22

22:                                               ; preds = %.sink.split, %10
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %23 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %7) #1
  %24 = icmp ugt i64 %23, %indvars.iv.next
  br i1 %24, label %10, label %._crit_edge, !llvm.loop !12
}

attributes #0 = { 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 #1 = { 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, !7, i64 8}
!6 = !{!"_ZTS8TreeNode", !7, i64 0, !7, i64 4, !7, i64 8, !7, i64 12}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!7, !7, i64 0}
!11 = !{!6, !7, i64 12}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass