; LLVM IR from HarshCasper/NeoAlgo :: C-Plus-Plus/ds/boundary_traversal_bst.ll (Z12addLeafNodesP4NodeRSt6vectorIiSaIiEE)

; 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 @_Z12addLeafNodesP4NodeRSt6vectorIiSaIiEE(ptr noundef %0, ptr noundef nonnull align 8 dereferenceable(24) %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %5 = load ptr, ptr %3, align 8, !tbaa !5
  %6 = getelementptr inbounds %struct.Node, ptr %5, i32 0, i32 1
  %7 = load ptr, ptr %6, align 8, !tbaa !9
  %8 = icmp eq ptr %7, null
  br i1 %8, label %9, label %18

9:                                                ; preds = %2
  %10 = load ptr, ptr %3, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.Node, ptr %10, i32 0, i32 2
  %12 = load ptr, ptr %11, align 8, !tbaa !12
  %13 = icmp eq ptr %12, null
  br i1 %13, label %14, label %18

14:                                               ; preds = %9
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.Node, ptr %16, i32 0, i32 0
  call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %15, ptr noundef nonnull align 4 dereferenceable(4) %17)
  br label %38

18:                                               ; preds = %9, %2
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.Node, ptr %19, i32 0, i32 1
  %21 = load ptr, ptr %20, align 8, !tbaa !9
  %22 = icmp ne ptr %21, null
  br i1 %22, label %23, label %28

23:                                               ; preds = %18
  %24 = load ptr, ptr %3, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.Node, ptr %24, i32 0, i32 1
  %26 = load ptr, ptr %25, align 8, !tbaa !9
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  call void @_Z12addLeafNodesP4NodeRSt6vectorIiSaIiEE(ptr noundef %26, ptr noundef nonnull align 8 dereferenceable(24) %27)
  br label %28

28:                                               ; preds = %23, %18
  %29 = load ptr, ptr %3, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.Node, ptr %29, i32 0, i32 2
  %31 = load ptr, ptr %30, align 8, !tbaa !12
  %32 = icmp ne ptr %31, null
  br i1 %32, label %33, label %38

33:                                               ; preds = %28
  %34 = load ptr, ptr %3, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.Node, ptr %34, i32 0, i32 2
  %36 = load ptr, ptr %35, align 8, !tbaa !12
  %37 = load ptr, ptr %4, align 8, !tbaa !5
  call void @_Z12addLeafNodesP4NodeRSt6vectorIiSaIiEE(ptr noundef %36, ptr noundef nonnull align 8 dereferenceable(24) %37)
  br label %38

38:                                               ; preds = %33, %28, %14
  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, !6, i64 8}
!10 = !{!"_ZTS4Node", !11, i64 0, !6, i64 8, !6, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !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 @_Z12addLeafNodesP4NodeRSt6vectorIiSaIiEE(ptr noundef %0, ptr noundef nonnull align 8 dereferenceable(24) %1) local_unnamed_addr #0 {
  br label %tailrecurse

tailrecurse:                                      ; preds = %.thread, %2
  %.tr = phi ptr [ %0, %2 ], [ %12, %.thread ]
  %3 = getelementptr inbounds i8, ptr %.tr, i64 8
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = icmp eq ptr %4, null
  br i1 %5, label %6, label %11

6:                                                ; preds = %tailrecurse
  %7 = getelementptr inbounds i8, ptr %.tr, i64 16
  %8 = load ptr, ptr %7, align 8, !tbaa !11
  %9 = icmp eq ptr %8, null
  br i1 %9, label %10, label %.thread

10:                                               ; preds = %6
  tail call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 4 dereferenceable(4) %.tr)
  br label %.loopexit

11:                                               ; preds = %tailrecurse
  tail call void @_Z12addLeafNodesP4NodeRSt6vectorIiSaIiEE(ptr noundef nonnull %4, ptr noundef nonnull align 8 dereferenceable(24) %1)
  %.phi.trans.insert = getelementptr inbounds i8, ptr %.tr, i64 16
  %.pre = load ptr, ptr %.phi.trans.insert, align 8, !tbaa !11
  br label %.thread

.thread:                                          ; preds = %6, %11
  %12 = phi ptr [ %8, %6 ], [ %.pre, %11 ]
  %.not11 = icmp eq ptr %12, null
  br i1 %.not11, label %.loopexit, label %tailrecurse

.loopexit:                                        ; preds = %.thread, %10
  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 = !{!"_ZTS4Node", !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: BDCEPass,EarlyCSEPass,GVNPass,GlobalOptPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass