; LLVM IR from ravireddy07/cpp-book :: src/Leetcode (987_vertical-order-traversal-binary-tree)

; 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.TreeNode = type { i32, ptr, ptr }

; Function Attrs: mustprogress uwtable
define dso_local void @_Z17printVerticalLineP8TreeNodeiiiiPSt6vectorIiSaIiEE(ptr noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4, ptr noundef %5) #0 {
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca ptr, align 8
  store ptr %0, ptr %7, align 8, !tbaa !5
  store i32 %1, ptr %8, align 4, !tbaa !9
  store i32 %2, ptr %9, align 4, !tbaa !9
  store i32 %3, ptr %10, align 4, !tbaa !9
  store i32 %4, ptr %11, align 4, !tbaa !9
  store ptr %5, ptr %12, align 8, !tbaa !5
  %13 = load ptr, ptr %7, align 8, !tbaa !5
  %14 = icmp eq ptr %13, null
  br i1 %14, label %15, label %16

15:                                               ; preds = %6
  br label %49

16:                                               ; preds = %6
  %17 = load i32, ptr %10, align 4, !tbaa !9
  %18 = load i32, ptr %8, align 4, !tbaa !9
  %19 = icmp eq i32 %17, %18
  br i1 %19, label %20, label %28

20:                                               ; preds = %16
  %21 = load i32, ptr %11, align 4, !tbaa !9
  %22 = load i32, ptr %9, align 4, !tbaa !9
  %23 = icmp eq i32 %21, %22
  br i1 %23, label %24, label %28

24:                                               ; preds = %20
  %25 = load ptr, ptr %12, align 8, !tbaa !5
  %26 = load ptr, ptr %7, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.TreeNode, ptr %26, i32 0, i32 0
  call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %25, ptr noundef nonnull align 4 dereferenceable(4) %27)
  br label %28

28:                                               ; preds = %24, %20, %16
  %29 = load ptr, ptr %7, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.TreeNode, ptr %29, i32 0, i32 1
  %31 = load ptr, ptr %30, align 8, !tbaa !11
  %32 = load i32, ptr %8, align 4, !tbaa !9
  %33 = load i32, ptr %9, align 4, !tbaa !9
  %34 = load i32, ptr %10, align 4, !tbaa !9
  %35 = sub nsw i32 %34, 1
  %36 = load i32, ptr %11, align 4, !tbaa !9
  %37 = sub nsw i32 %36, 1
  %38 = load ptr, ptr %12, align 8, !tbaa !5
  call void @_Z17printVerticalLineP8TreeNodeiiiiPSt6vectorIiSaIiEE(ptr noundef %31, i32 noundef %32, i32 noundef %33, i32 noundef %35, i32 noundef %37, ptr noundef %38)
  %39 = load ptr, ptr %7, align 8, !tbaa !5
  %40 = getelementptr inbounds %struct.TreeNode, ptr %39, i32 0, i32 2
  %41 = load ptr, ptr %40, align 8, !tbaa !13
  %42 = load i32, ptr %8, align 4, !tbaa !9
  %43 = load i32, ptr %9, align 4, !tbaa !9
  %44 = load i32, ptr %10, align 4, !tbaa !9
  %45 = add nsw i32 %44, 1
  %46 = load i32, ptr %11, align 4, !tbaa !9
  %47 = sub nsw i32 %46, 1
  %48 = load ptr, ptr %12, align 8, !tbaa !5
  call void @_Z17printVerticalLineP8TreeNodeiiiiPSt6vectorIiSaIiEE(ptr noundef %41, i32 noundef %42, i32 noundef %43, i32 noundef %45, i32 noundef %47, ptr noundef %48)
  br label %49

49:                                               ; preds = %28, %15
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) #0 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" }

!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 = !{!12, !6, i64 8}
!12 = !{!"_ZTS8TreeNode", !10, i64 0, !6, i64 8, !6, i64 16}
!13 = !{!12, !6, i64 16}


; 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"

; Function Attrs: mustprogress uwtable
define dso_local void @_Z17printVerticalLineP8TreeNodeiiiiPSt6vectorIiSaIiEE(ptr noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4, ptr noundef %5) local_unnamed_addr #0 {
  %7 = icmp eq ptr %0, null
  br i1 %7, label %tailrecurse._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %6, %tailrecurse
  %.tr2125 = phi i32 [ %14, %tailrecurse ], [ %4, %6 ]
  %.tr2024 = phi i32 [ %17, %tailrecurse ], [ %3, %6 ]
  %.tr23 = phi ptr [ %16, %tailrecurse ], [ %0, %6 ]
  %8 = icmp eq i32 %.tr2024, %1
  %9 = icmp eq i32 %.tr2125, %2
  %or.cond = and i1 %8, %9
  br i1 %or.cond, label %10, label %tailrecurse

10:                                               ; preds = %.lr.ph
  tail call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %5, ptr noundef nonnull align 4 dereferenceable(4) %.tr23)
  br label %tailrecurse

tailrecurse:                                      ; preds = %10, %.lr.ph
  %11 = getelementptr inbounds i8, ptr %.tr23, i64 8
  %12 = load ptr, ptr %11, align 8, !tbaa !5
  %13 = add nsw i32 %.tr2024, -1
  %14 = add nsw i32 %.tr2125, -1
  tail call void @_Z17printVerticalLineP8TreeNodeiiiiPSt6vectorIiSaIiEE(ptr noundef %12, i32 noundef %1, i32 noundef %2, i32 noundef %13, i32 noundef %14, ptr noundef %5)
  %15 = getelementptr inbounds i8, ptr %.tr23, i64 16
  %16 = load ptr, ptr %15, align 8, !tbaa !11
  %17 = add nsw i32 %.tr2024, 1
  %18 = icmp eq ptr %16, null
  br i1 %18, label %tailrecurse._crit_edge, label %.lr.ph

tailrecurse._crit_edge:                           ; preds = %tailrecurse, %6
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0 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" }

!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, !10, i64 8}
!6 = !{!"_ZTS8TreeNode", !7, i64 0, !10, i64 8, !10, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 16}


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