; LLVM IR from Leet-Us-Code/DSA-A-Z-Practice :: Sid's Levels/Level - 2/Binary Tree (Left View Of 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.Node = type { i32, ptr, ptr }

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6helperP4NodeiRiRSt6vectorIiSaIiEE(ptr noundef %0, i32 noundef %1, ptr noundef nonnull align 4 dereferenceable(4) %2, ptr noundef nonnull align 8 dereferenceable(24) %3) #0 {
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store ptr %2, ptr %7, align 8, !tbaa !5
  store ptr %3, ptr %8, align 8, !tbaa !5
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = icmp eq ptr %9, null
  br i1 %10, label %11, label %12

11:                                               ; preds = %4
  br label %38

12:                                               ; preds = %4
  %13 = load i32, ptr %6, align 4, !tbaa !9
  %14 = load ptr, ptr %7, align 8, !tbaa !5
  %15 = load i32, ptr %14, align 4, !tbaa !9
  %16 = icmp sgt i32 %13, %15
  br i1 %16, label %17, label %23

17:                                               ; preds = %12
  %18 = load i32, ptr %6, align 4, !tbaa !9
  %19 = load ptr, ptr %7, align 8, !tbaa !5
  store i32 %18, ptr %19, align 4, !tbaa !9
  %20 = load ptr, ptr %8, align 8, !tbaa !5
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.Node, ptr %21, i32 0, i32 0
  call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %20, ptr noundef nonnull align 4 dereferenceable(4) %22)
  br label %23

23:                                               ; preds = %17, %12
  %24 = load ptr, ptr %5, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.Node, ptr %24, i32 0, i32 1
  %26 = load ptr, ptr %25, align 8, !tbaa !11
  %27 = load i32, ptr %6, align 4, !tbaa !9
  %28 = add nsw i32 %27, 1
  %29 = load ptr, ptr %7, align 8, !tbaa !5
  %30 = load ptr, ptr %8, align 8, !tbaa !5
  call void @_Z6helperP4NodeiRiRSt6vectorIiSaIiEE(ptr noundef %26, i32 noundef %28, ptr noundef nonnull align 4 dereferenceable(4) %29, ptr noundef nonnull align 8 dereferenceable(24) %30)
  %31 = load ptr, ptr %5, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.Node, ptr %31, i32 0, i32 2
  %33 = load ptr, ptr %32, align 8, !tbaa !13
  %34 = load i32, ptr %6, align 4, !tbaa !9
  %35 = add nsw i32 %34, 1
  %36 = load ptr, ptr %7, align 8, !tbaa !5
  %37 = load ptr, ptr %8, align 8, !tbaa !5
  call void @_Z6helperP4NodeiRiRSt6vectorIiSaIiEE(ptr noundef %33, i32 noundef %35, ptr noundef nonnull align 4 dereferenceable(4) %36, ptr noundef nonnull align 8 dereferenceable(24) %37)
  br label %38

38:                                               ; preds = %23, %11
  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 = !{!"_ZTS4Node", !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 @_Z6helperP4NodeiRiRSt6vectorIiSaIiEE(ptr noundef %0, i32 noundef %1, ptr nocapture noundef nonnull align 4 dereferenceable(4) %2, ptr noundef nonnull align 8 dereferenceable(24) %3) local_unnamed_addr #0 {
  %5 = icmp eq ptr %0, null
  br i1 %5, label %tailrecurse._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %4, %tailrecurse
  %.tr1519 = phi i32 [ %11, %tailrecurse ], [ %1, %4 ]
  %.tr18 = phi ptr [ %13, %tailrecurse ], [ %0, %4 ]
  %6 = load i32, ptr %2, align 4, !tbaa !5
  %7 = icmp slt i32 %6, %.tr1519
  br i1 %7, label %8, label %tailrecurse

8:                                                ; preds = %.lr.ph
  store i32 %.tr1519, ptr %2, align 4, !tbaa !5
  tail call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %3, ptr noundef nonnull align 4 dereferenceable(4) %.tr18)
  br label %tailrecurse

tailrecurse:                                      ; preds = %8, %.lr.ph
  %9 = getelementptr inbounds i8, ptr %.tr18, i64 8
  %10 = load ptr, ptr %9, align 8, !tbaa !9
  %11 = add nsw i32 %.tr1519, 1
  tail call void @_Z6helperP4NodeiRiRSt6vectorIiSaIiEE(ptr noundef %10, i32 noundef %11, ptr noundef nonnull align 4 dereferenceable(4) %2, ptr noundef nonnull align 8 dereferenceable(24) %3)
  %12 = getelementptr inbounds i8, ptr %.tr18, i64 16
  %13 = load ptr, ptr %12, align 8, !tbaa !12
  %14 = icmp eq ptr %13, null
  br i1 %14, label %tailrecurse._crit_edge, label %.lr.ph

tailrecurse._crit_edge:                           ; preds = %tailrecurse, %4
  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, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !11, i64 8}
!10 = !{!"_ZTS4Node", !6, i64 0, !11, i64 8, !11, i64 16}
!11 = !{!"any pointer", !7, i64 0}
!12 = !{!10, !11, i64 16}


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