; LLVM IR from Lakhankumawat/LearnCPP :: T-Tree/G-GenricTree/LevelOrderTraversalOfaGenricTree.ll (Z9constructPii)

; 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::stack" = type { %"class.std::deque" }
%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<Node *, std::allocator<Node *>>::_Deque_impl" }
%"struct.std::_Deque_base<Node *, std::allocator<Node *>>::_Deque_impl" = type { %"struct.std::_Deque_base<Node *, std::allocator<Node *>>::_Deque_impl_data" }
%"struct.std::_Deque_base<Node *, std::allocator<Node *>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }
%struct.Node = type { i32, %"class.std::vector" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<Node *, std::allocator<Node *>>::_Vector_impl" }
%"struct.std::_Vector_base<Node *, std::allocator<Node *>>::_Vector_impl" = type { %"struct.std::_Vector_base<Node *, std::allocator<Node *>>::_Vector_impl_data" }
%"struct.std::_Vector_base<Node *, std::allocator<Node *>>::_Vector_impl_data" = type { ptr, ptr, ptr }

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_Z7newNodei(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
define dso_local noundef ptr @_Z9constructPii(ptr noundef %0, i32 noundef %1) #0 personality ptr @__gxx_personality_v0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca %"class.std::stack", align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  store ptr null, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 80, ptr %6) #4
  call void @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEEC2IS4_vEEv(ptr noundef nonnull align 8 dereferenceable(80) %6)
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %55, %2
  %12 = load i32, ptr %7, align 4, !tbaa !9
  %13 = load i32, ptr %4, align 4, !tbaa !9
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  br label %59

16:                                               ; preds = %11
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  %18 = load i32, ptr %7, align 4, !tbaa !9
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds i32, ptr %17, i64 %19
  %21 = load i32, ptr %20, align 4, !tbaa !9
  %22 = icmp eq i32 %21, -1
  br i1 %22, label %23, label %29

23:                                               ; preds = %16
  invoke void @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %6)
          to label %24 unwind label %25

24:                                               ; preds = %23
  br label %54

25:                                               ; preds = %23
  %26 = landingpad { ptr, i32 }
          cleanup
  %27 = extractvalue { ptr, i32 } %26, 0
  store ptr %27, ptr %8, align 8
  %28 = extractvalue { ptr, i32 } %26, 1
  store i32 %28, ptr %9, align 4
  br label %58

29:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #4
  %30 = load ptr, ptr %3, align 8, !tbaa !5
  %31 = load i32, ptr %7, align 4, !tbaa !9
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds i32, ptr %30, i64 %32
  %34 = load i32, ptr %33, align 4, !tbaa !9
  %35 = invoke noundef ptr @_Z7newNodei(i32 noundef %34)
          to label %36 unwind label %46

36:                                               ; preds = %29
  store ptr %35, ptr %10, align 8, !tbaa !5
  %37 = invoke noundef i64 @_ZNKSt5stackIP4NodeSt5dequeIS1_SaIS1_EEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %6)
          to label %38 unwind label %46

38:                                               ; preds = %36
  %39 = icmp ugt i64 %37, 0
  br i1 %39, label %40, label %50

40:                                               ; preds = %38
  %41 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %6)
          to label %42 unwind label %46

42:                                               ; preds = %40
  %43 = load ptr, ptr %41, align 8, !tbaa !5
  %44 = getelementptr inbounds %struct.Node, ptr %43, i32 0, i32 1
  invoke void @_ZNSt6vectorIP4NodeSaIS1_EE9push_backERKS1_(ptr noundef nonnull align 8 dereferenceable(24) %44, ptr noundef nonnull align 8 dereferenceable(8) %10)
          to label %45 unwind label %46

45:                                               ; preds = %42
  br label %52

46:                                               ; preds = %52, %42, %40, %36, %29
  %47 = landingpad { ptr, i32 }
          cleanup
  %48 = extractvalue { ptr, i32 } %47, 0
  store ptr %48, ptr %8, align 8
  %49 = extractvalue { ptr, i32 } %47, 1
  store i32 %49, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #4
  br label %58

50:                                               ; preds = %38
  %51 = load ptr, ptr %10, align 8, !tbaa !5
  store ptr %51, ptr %5, align 8, !tbaa !5
  br label %52

52:                                               ; preds = %50, %45
  invoke void @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEE4pushERKS1_(ptr noundef nonnull align 8 dereferenceable(80) %6, ptr noundef nonnull align 8 dereferenceable(8) %10)
          to label %53 unwind label %46

53:                                               ; preds = %52
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #4
  br label %54

54:                                               ; preds = %53, %24
  br label %55

55:                                               ; preds = %54
  %56 = load i32, ptr %7, align 4, !tbaa !9
  %57 = add nsw i32 %56, 1
  store i32 %57, ptr %7, align 4, !tbaa !9
  br label %11, !llvm.loop !11

58:                                               ; preds = %46, %25
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  call void @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %6) #4
  call void @llvm.lifetime.end.p0(i64 80, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  br label %61

59:                                               ; preds = %15
  %60 = load ptr, ptr %5, align 8, !tbaa !5
  call void @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %6) #4
  call void @llvm.lifetime.end.p0(i64 80, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  ret ptr %60

61:                                               ; preds = %58
  %62 = load ptr, ptr %8, align 8
  %63 = load i32, ptr %9, align 4
  %64 = insertvalue { ptr, i32 } poison, ptr %62, 0
  %65 = insertvalue { ptr, i32 } %64, i32 %63, 1
  resume { ptr, i32 } %65
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEEC2IS4_vEEv(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt5stackIP4NodeSt5dequeIS1_SaIS1_EEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80)) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIP4NodeSaIS1_EE9push_backERKS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(8)) #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEE4pushERKS1_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 8 dereferenceable(8)) #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #3 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 #4 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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::stack" = type { %"class.std::deque" }
%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<Node *, std::allocator<Node *>>::_Deque_impl" }
%"struct.std::_Deque_base<Node *, std::allocator<Node *>>::_Deque_impl" = type { %"struct.std::_Deque_base<Node *, std::allocator<Node *>>::_Deque_impl_data" }
%"struct.std::_Deque_base<Node *, std::allocator<Node *>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_Z7newNodei(i32 noundef) local_unnamed_addr #0

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

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

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_Z9constructPii(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %3 = alloca %"class.std::stack", align 8
  %4 = alloca ptr, align 8
  call void @llvm.lifetime.start.p0(i64 80, ptr nonnull %3) #4
  call void @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEEC2IS4_vEEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
  %5 = icmp sgt i32 %1, 0
  br i1 %5, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %2
  %wide.trip.count = zext nneg i32 %1 to i64
  br label %.lr.ph

._crit_edge:                                      ; preds = %24, %2
  %.0.lcssa = phi ptr [ null, %2 ], [ %.2, %24 ]
  call void @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %3) #4
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %3) #4
  ret ptr %.0.lcssa

.lr.ph:                                           ; preds = %.lr.ph.preheader, %24
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %24 ]
  %.012 = phi ptr [ null, %.lr.ph.preheader ], [ %.2, %24 ]
  %6 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %8 = icmp eq i32 %7, -1
  br i1 %8, label %9, label %10

9:                                                ; preds = %.lr.ph
  call void @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
  br label %24

10:                                               ; preds = %.lr.ph
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  %11 = invoke noundef ptr @_Z7newNodei(i32 noundef %7)
          to label %12 unwind label %18

12:                                               ; preds = %10
  store ptr %11, ptr %4, align 8, !tbaa !9
  %13 = call noundef i64 @_ZNKSt5stackIP4NodeSt5dequeIS1_SaIS1_EEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
  %.not = icmp eq i64 %13, 0
  br i1 %.not, label %20, label %14

14:                                               ; preds = %12
  %15 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
  %16 = load ptr, ptr %15, align 8, !tbaa !9
  %17 = getelementptr inbounds i8, ptr %16, i64 8
  invoke void @_ZNSt6vectorIP4NodeSaIS1_EE9push_backERKS1_(ptr noundef nonnull align 8 dereferenceable(24) %17, ptr noundef nonnull align 8 dereferenceable(8) %4)
          to label %22 unwind label %18

18:                                               ; preds = %22, %14, %10
  %19 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  call void @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %3) #4
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %3) #4
  resume { ptr, i32 } %19

20:                                               ; preds = %12
  %21 = load ptr, ptr %4, align 8, !tbaa !9
  br label %22

22:                                               ; preds = %14, %20
  %.1 = phi ptr [ %.012, %14 ], [ %21, %20 ]
  invoke void @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEE4pushERKS1_(ptr noundef nonnull align 8 dereferenceable(80) %3, ptr noundef nonnull align 8 dereferenceable(8) %4)
          to label %23 unwind label %18

23:                                               ; preds = %22
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  br label %24

24:                                               ; preds = %9, %23
  %.2 = phi ptr [ %.012, %9 ], [ %.1, %23 ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !11
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEEC2IS4_vEEv(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt5stackIP4NodeSt5dequeIS1_SaIS1_EEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIP4NodeSaIS1_EE9push_backERKS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEE4pushERKS1_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIP4NodeSt5dequeIS1_SaIS1_EEED2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #3 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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 #4 = { 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 = !{!"any pointer", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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