; LLVM IR from gargarchit/Data_Structure_n_Algorithms :: Binary_Tree (Leaf_NonLeaf_Level)

; 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"

@.str.3 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [25 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [23 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [64 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [16 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [22 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local ptr @Insert(ptr noundef, i32 noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local void @Leaf_NonLeaf_Level(ptr noundef, i32 noundef) #1

declare i32 @printf(ptr noundef, ...) #2

; Function Attrs: nounwind uwtable
declare dso_local void @inorder_display(ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local void @main() #1 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  store ptr null, ptr %3, align 8, !tbaa !5
  br label %5

5:                                                ; preds = %32, %0
  %6 = load i32, ptr %1, align 4, !tbaa !9
  %7 = icmp ne i32 %6, 0
  br i1 %7, label %8, label %33

8:                                                ; preds = %5
  %9 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  %10 = call i32 (ptr, ...) @printf(ptr noundef @.str.4)
  %11 = call i32 (ptr, ...) @printf(ptr noundef @.str.5)
  %12 = call i32 (ptr, ...) @printf(ptr noundef @.str.6)
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.7, ptr noundef %1)
  %14 = load i32, ptr %1, align 4, !tbaa !9
  %15 = icmp eq i32 %14, 0
  br i1 %15, label %16, label %18

16:                                               ; preds = %8
  %17 = call i32 (ptr, ...) @printf(ptr noundef @.str.8)
  store i32 1, ptr %4, align 4
  br label %34

18:                                               ; preds = %8
  %19 = load i32, ptr %1, align 4, !tbaa !9
  switch i32 %19, label %30 [
    i32 1, label %20
    i32 2, label %26
    i32 3, label %28
  ]

20:                                               ; preds = %18
  %21 = call i32 (ptr, ...) @printf(ptr noundef @.str.9)
  %22 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.7, ptr noundef %2)
  %23 = load ptr, ptr %3, align 8, !tbaa !5
  %24 = load i32, ptr %2, align 4, !tbaa !9
  %25 = call ptr @Insert(ptr noundef %23, i32 noundef %24)
  store ptr %25, ptr %3, align 8, !tbaa !5
  br label %32

26:                                               ; preds = %18
  %27 = load ptr, ptr %3, align 8, !tbaa !5
  call void @inorder_display(ptr noundef %27)
  br label %32

28:                                               ; preds = %18
  %29 = load ptr, ptr %3, align 8, !tbaa !5
  call void @Leaf_NonLeaf_Level(ptr noundef %29, i32 noundef 0)
  br label %32

30:                                               ; preds = %18
  %31 = call i32 (ptr, ...) @printf(ptr noundef @.str.10)
  br label %32

32:                                               ; preds = %30, %28, %26, %20
  br label %5, !llvm.loop !11

33:                                               ; preds = %5
  store i32 0, ptr %4, align 4
  br label %34

34:                                               ; preds = %33, %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #3
  %35 = load i32, ptr %4, align 4
  switch i32 %35, label %37 [
    i32 0, label %36
    i32 1, label %36
  ]

36:                                               ; preds = %34, %34
  ret void

37:                                               ; preds = %34
  unreachable
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { "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 = { 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/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"

; Function Attrs: mustprogress nofree norecurse noreturn nosync nounwind willreturn memory(none) uwtable
define dso_local void @main() local_unnamed_addr #0 {
  unreachable
}

attributes #0 = { mustprogress nofree norecurse noreturn nosync nounwind willreturn memory(none) 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)"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,LoopSimplifyPass,PostOrderFunctionAttrsPass,SCCPPass,SROAPass,SimplifyCFGPass