; LLVM IR from Lakhankumawat/LearnCPP :: T-Tree/B-BinarySearchTree/BST.ll (Z10insertNodeP4Nodei)

; 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, ptr }

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_Z10createNodei(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 @_Z10insertNodeP4Nodei(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = icmp eq ptr %8, null
  br i1 %9, label %10, label %13

10:                                               ; preds = %2
  %11 = load i32, ptr %5, align 4, !tbaa !9
  %12 = call noundef ptr @_Z10createNodei(i32 noundef %11)
  store ptr %12, ptr %3, align 8
  br label %52

13:                                               ; preds = %2
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.Node, ptr %14, i32 0, i32 0
  %16 = load i32, ptr %15, align 8, !tbaa !11
  %17 = load i32, ptr %5, align 4, !tbaa !9
  %18 = icmp sgt i32 %16, %17
  br i1 %18, label %19, label %31

19:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.Node, ptr %20, i32 0, i32 1
  %22 = load ptr, ptr %21, align 8, !tbaa !13
  %23 = load i32, ptr %5, align 4, !tbaa !9
  %24 = call noundef ptr @_Z10insertNodeP4Nodei(ptr noundef %22, i32 noundef %23)
  store ptr %24, ptr %6, align 8, !tbaa !5
  %25 = load ptr, ptr %6, align 8, !tbaa !5
  %26 = load ptr, ptr %4, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.Node, ptr %26, i32 0, i32 1
  store ptr %25, ptr %27, align 8, !tbaa !13
  %28 = load ptr, ptr %4, align 8, !tbaa !5
  %29 = load ptr, ptr %6, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.Node, ptr %29, i32 0, i32 3
  store ptr %28, ptr %30, align 8, !tbaa !14
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  br label %50

31:                                               ; preds = %13
  %32 = load ptr, ptr %4, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.Node, ptr %32, i32 0, i32 0
  %34 = load i32, ptr %33, align 8, !tbaa !11
  %35 = load i32, ptr %5, align 4, !tbaa !9
  %36 = icmp slt i32 %34, %35
  br i1 %36, label %37, label %49

37:                                               ; preds = %31
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %38 = load ptr, ptr %4, align 8, !tbaa !5
  %39 = getelementptr inbounds %struct.Node, ptr %38, i32 0, i32 2
  %40 = load ptr, ptr %39, align 8, !tbaa !15
  %41 = load i32, ptr %5, align 4, !tbaa !9
  %42 = call noundef ptr @_Z10insertNodeP4Nodei(ptr noundef %40, i32 noundef %41)
  store ptr %42, ptr %7, align 8, !tbaa !5
  %43 = load ptr, ptr %7, align 8, !tbaa !5
  %44 = load ptr, ptr %4, align 8, !tbaa !5
  %45 = getelementptr inbounds %struct.Node, ptr %44, i32 0, i32 2
  store ptr %43, ptr %45, align 8, !tbaa !15
  %46 = load ptr, ptr %4, align 8, !tbaa !5
  %47 = load ptr, ptr %7, align 8, !tbaa !5
  %48 = getelementptr inbounds %struct.Node, ptr %47, i32 0, i32 3
  store ptr %46, ptr %48, align 8, !tbaa !14
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  br label %49

49:                                               ; preds = %37, %31
  br label %50

50:                                               ; preds = %49, %19
  %51 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %51, ptr %3, align 8
  br label %52

52:                                               ; preds = %50, %10
  %53 = load ptr, ptr %3, align 8
  ret ptr %53
}

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 = { 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 = !{!12, !10, i64 0}
!12 = !{!"_ZTS4Node", !10, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}
!13 = !{!12, !6, i64 8}
!14 = !{!12, !6, i64 24}
!15 = !{!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
declare dso_local noundef ptr @_Z10createNodei(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_Z10insertNodeP4Nodei(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp eq ptr %0, null
  br i1 %3, label %4, label %6

4:                                                ; preds = %2
  %5 = tail call noundef ptr @_Z10createNodei(i32 noundef %1)
  br label %common.ret22

6:                                                ; preds = %2
  %7 = load i32, ptr %0, align 8, !tbaa !5
  %8 = icmp sgt i32 %7, %1
  br i1 %8, label %9, label %14

common.ret22:                                     ; preds = %14, %4, %16, %9
  %common.ret22.op = phi ptr [ %0, %9 ], [ %0, %16 ], [ %5, %4 ], [ %0, %14 ]
  ret ptr %common.ret22.op

9:                                                ; preds = %6
  %10 = getelementptr inbounds i8, ptr %0, i64 8
  %11 = load ptr, ptr %10, align 8, !tbaa !11
  %12 = tail call noundef ptr @_Z10insertNodeP4Nodei(ptr noundef %11, i32 noundef %1)
  store ptr %12, ptr %10, align 8, !tbaa !11
  %13 = getelementptr inbounds i8, ptr %12, i64 24
  store ptr %0, ptr %13, align 8, !tbaa !12
  br label %common.ret22

14:                                               ; preds = %6
  %15 = icmp slt i32 %7, %1
  br i1 %15, label %16, label %common.ret22

16:                                               ; preds = %14
  %17 = getelementptr inbounds i8, ptr %0, i64 16
  %18 = load ptr, ptr %17, align 8, !tbaa !13
  %19 = tail call noundef ptr @_Z10insertNodeP4Nodei(ptr noundef %18, i32 noundef %1)
  store ptr %19, ptr %17, align 8, !tbaa !13
  %20 = getelementptr inbounds i8, ptr %19, i64 24
  store ptr %0, ptr %20, align 8, !tbaa !12
  br label %common.ret22
}

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, !7, i64 0}
!6 = !{!"_ZTS4Node", !7, i64 0, !10, i64 8, !10, i64 16, !10, i64 24}
!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 8}
!12 = !{!6, !10, i64 24}
!13 = !{!6, !10, i64 16}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass