; LLVM IR from begeekmyfriend/leetcode :: 0297_serialize_and_deserialize_binary_tree (tree_serdes)

; 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 }

@.str = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local ptr @serialize(ptr 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: nounwind uwtable
declare dso_local ptr @deserialize(ptr noundef) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca %struct.TreeNode, align 8
  %3 = alloca [2 x %struct.TreeNode], align 16
  %4 = alloca [4 x %struct.TreeNode], align 16
  %5 = alloca ptr, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 24, ptr %2) #3
  %6 = getelementptr inbounds %struct.TreeNode, ptr %2, i32 0, i32 0
  store i32 3, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 48, ptr %3) #3
  %7 = getelementptr inbounds [2 x %struct.TreeNode], ptr %3, i64 0, i64 0
  %8 = getelementptr inbounds %struct.TreeNode, ptr %7, i32 0, i32 0
  store i32 9, ptr %8, align 16, !tbaa !5
  %9 = getelementptr inbounds [2 x %struct.TreeNode], ptr %3, i64 0, i64 1
  %10 = getelementptr inbounds %struct.TreeNode, ptr %9, i32 0, i32 0
  store i32 20, ptr %10, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 96, ptr %4) #3
  %11 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 2
  %12 = getelementptr inbounds %struct.TreeNode, ptr %11, i32 0, i32 0
  store i32 15, ptr %12, align 16, !tbaa !5
  %13 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 3
  %14 = getelementptr inbounds %struct.TreeNode, ptr %13, i32 0, i32 0
  store i32 7, ptr %14, align 8, !tbaa !5
  %15 = getelementptr inbounds [2 x %struct.TreeNode], ptr %3, i64 0, i64 0
  %16 = getelementptr inbounds %struct.TreeNode, ptr %2, i32 0, i32 1
  store ptr %15, ptr %16, align 8, !tbaa !11
  %17 = getelementptr inbounds [2 x %struct.TreeNode], ptr %3, i64 0, i64 1
  %18 = getelementptr inbounds %struct.TreeNode, ptr %2, i32 0, i32 2
  store ptr %17, ptr %18, align 8, !tbaa !12
  %19 = getelementptr inbounds [2 x %struct.TreeNode], ptr %3, i64 0, i64 0
  %20 = getelementptr inbounds %struct.TreeNode, ptr %19, i32 0, i32 1
  store ptr null, ptr %20, align 8, !tbaa !11
  %21 = getelementptr inbounds [2 x %struct.TreeNode], ptr %3, i64 0, i64 0
  %22 = getelementptr inbounds %struct.TreeNode, ptr %21, i32 0, i32 2
  store ptr null, ptr %22, align 16, !tbaa !12
  %23 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 2
  %24 = getelementptr inbounds [2 x %struct.TreeNode], ptr %3, i64 0, i64 1
  %25 = getelementptr inbounds %struct.TreeNode, ptr %24, i32 0, i32 1
  store ptr %23, ptr %25, align 8, !tbaa !11
  %26 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 3
  %27 = getelementptr inbounds [2 x %struct.TreeNode], ptr %3, i64 0, i64 1
  %28 = getelementptr inbounds %struct.TreeNode, ptr %27, i32 0, i32 2
  store ptr %26, ptr %28, align 8, !tbaa !12
  %29 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 0
  %30 = getelementptr inbounds %struct.TreeNode, ptr %29, i32 0, i32 1
  store ptr null, ptr %30, align 8, !tbaa !11
  %31 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 0
  %32 = getelementptr inbounds %struct.TreeNode, ptr %31, i32 0, i32 2
  store ptr null, ptr %32, align 16, !tbaa !12
  %33 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 1
  %34 = getelementptr inbounds %struct.TreeNode, ptr %33, i32 0, i32 1
  store ptr null, ptr %34, align 8, !tbaa !11
  %35 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 1
  %36 = getelementptr inbounds %struct.TreeNode, ptr %35, i32 0, i32 2
  store ptr null, ptr %36, align 8, !tbaa !12
  %37 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 2
  %38 = getelementptr inbounds %struct.TreeNode, ptr %37, i32 0, i32 1
  store ptr null, ptr %38, align 8, !tbaa !11
  %39 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 2
  %40 = getelementptr inbounds %struct.TreeNode, ptr %39, i32 0, i32 2
  store ptr null, ptr %40, align 16, !tbaa !12
  %41 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 3
  %42 = getelementptr inbounds %struct.TreeNode, ptr %41, i32 0, i32 1
  store ptr null, ptr %42, align 8, !tbaa !11
  %43 = getelementptr inbounds [4 x %struct.TreeNode], ptr %4, i64 0, i64 3
  %44 = getelementptr inbounds %struct.TreeNode, ptr %43, i32 0, i32 2
  store ptr null, ptr %44, align 8, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %45 = call ptr @serialize(ptr noundef %2)
  store ptr %45, ptr %5, align 8, !tbaa !13
  %46 = load ptr, ptr %5, align 8, !tbaa !13
  %47 = call i32 (ptr, ...) @printf(ptr noundef @.str, ptr noundef %46)
  %48 = load ptr, ptr %5, align 8, !tbaa !13
  %49 = call ptr @deserialize(ptr noundef %48)
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 96, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 48, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr %2) #3
  ret i32 0
}

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

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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, !7, i64 0}
!6 = !{!"TreeNode", !7, i64 0, !10, i64 8, !10, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!6, !10, i64 16}
!13 = !{!10, !10, i64 0}


; 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"

%struct.TreeNode = type { i32, ptr, ptr }

@.str = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local ptr @serialize(ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
declare dso_local ptr @deserialize(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca %struct.TreeNode, align 8
  %2 = alloca [2 x %struct.TreeNode], align 16
  %3 = alloca [4 x %struct.TreeNode], align 16
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %1) #4
  store i32 3, ptr %1, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 48, ptr nonnull %2) #4
  store i32 9, ptr %2, align 16, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %2, i64 24
  store i32 20, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 96, ptr nonnull %3) #4
  %5 = getelementptr inbounds i8, ptr %3, i64 48
  store i32 15, ptr %5, align 16, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %3, i64 72
  store i32 7, ptr %6, align 8, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %1, i64 8
  store ptr %2, ptr %7, align 8, !tbaa !11
  %8 = getelementptr inbounds i8, ptr %1, i64 16
  store ptr %4, ptr %8, align 8, !tbaa !12
  %9 = getelementptr inbounds i8, ptr %2, i64 8
  %10 = getelementptr inbounds i8, ptr %2, i64 32
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %9, i8 0, i64 16, i1 false)
  store ptr %5, ptr %10, align 16, !tbaa !11
  %11 = getelementptr inbounds i8, ptr %2, i64 40
  store ptr %6, ptr %11, align 8, !tbaa !12
  %12 = getelementptr inbounds i8, ptr %3, i64 8
  %13 = getelementptr inbounds i8, ptr %3, i64 32
  %14 = getelementptr inbounds i8, ptr %3, i64 56
  %15 = getelementptr inbounds i8, ptr %3, i64 80
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %12, i8 0, i64 16, i1 false)
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(16) %13, i8 0, i64 16, i1 false)
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %14, i8 0, i64 16, i1 false)
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(16) %15, i8 0, i64 16, i1 false)
  %16 = call ptr @serialize(ptr noundef nonnull %1)
  %17 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, ptr noundef %16)
  %18 = call ptr @deserialize(ptr noundef %16)
  call void @llvm.lifetime.end.p0(i64 96, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 48, ptr nonnull %2) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %1) #4
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

attributes #0 = { 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nofree nounwind "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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #4 = { 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, !7, i64 0}
!6 = !{!"TreeNode", !7, i64 0, !10, i64 8, !10, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!6, !10, i64 16}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,MemCpyOptPass,PostOrderFunctionAttrsPass,SROAPass