; LLVM IR from TyrantLucifer/DataStructure :: Tree (PreThreadBinaryTree)

; 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 { i8, ptr, ptr, i32, i32 }

@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local void @createTree(ptr noundef, ptr noundef, 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 void @preThreadTree(ptr noundef, ptr noundef) #0

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

; Function Attrs: nounwind uwtable
define dso_local i32 @main(i32 noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  store i32 0, ptr %3, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  store ptr null, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  store i32 0, ptr %8, align 4, !tbaa !5
  %10 = load ptr, ptr %5, align 8, !tbaa !9
  %11 = getelementptr inbounds ptr, ptr %10, i64 1
  %12 = load ptr, ptr %11, align 8, !tbaa !9
  call void @createTree(ptr noundef %6, ptr noundef %12, ptr noundef %8)
  %13 = load ptr, ptr %6, align 8, !tbaa !9
  call void @preThreadTree(ptr noundef %13, ptr noundef %7)
  %14 = load ptr, ptr %7, align 8, !tbaa !9
  %15 = getelementptr inbounds %struct.TreeNode, ptr %14, i32 0, i32 4
  store i32 1, ptr %15, align 4, !tbaa !11
  %16 = load ptr, ptr %7, align 8, !tbaa !9
  %17 = getelementptr inbounds %struct.TreeNode, ptr %16, i32 0, i32 2
  store ptr null, ptr %17, align 8, !tbaa !13
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  %18 = load ptr, ptr %6, align 8, !tbaa !9
  store ptr %18, ptr %9, align 8, !tbaa !9
  br label %19

19:                                               ; preds = %29, %2
  %20 = load ptr, ptr %9, align 8, !tbaa !9
  %21 = icmp ne ptr %20, null
  br i1 %21, label %23, label %22

22:                                               ; preds = %19
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  br label %32

23:                                               ; preds = %19
  %24 = load ptr, ptr %9, align 8, !tbaa !9
  %25 = getelementptr inbounds %struct.TreeNode, ptr %24, i32 0, i32 0
  %26 = load i8, ptr %25, align 8, !tbaa !14
  %27 = sext i8 %26 to i32
  %28 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %27)
  br label %29

29:                                               ; preds = %23
  %30 = load ptr, ptr %9, align 8, !tbaa !9
  %31 = call ptr @getNext(ptr noundef %30)
  store ptr %31, ptr %9, align 8, !tbaa !9
  br label %19, !llvm.loop !15

32:                                               ; preds = %22
  %33 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #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, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !6, i64 28}
!12 = !{!"TreeNode", !7, i64 0, !10, i64 8, !10, i64 16, !6, i64 24, !6, i64 28}
!13 = !{!12, !10, i64 16}
!14 = !{!12, !7, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"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"

@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local void @createTree(ptr noundef, ptr noundef, 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 void @preThreadTree(ptr noundef, ptr noundef) local_unnamed_addr #0

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

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  store ptr null, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #3
  store i32 0, ptr %5, align 4, !tbaa !9
  %6 = getelementptr inbounds i8, ptr %1, i64 8
  %7 = load ptr, ptr %6, align 8, !tbaa !5
  call void @createTree(ptr noundef nonnull %3, ptr noundef %7, ptr noundef nonnull %5)
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  call void @preThreadTree(ptr noundef %8, ptr noundef nonnull %4)
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = getelementptr inbounds i8, ptr %9, i64 28
  store i32 1, ptr %10, align 4, !tbaa !11
  %11 = getelementptr inbounds i8, ptr %9, i64 16
  store ptr null, ptr %11, align 8, !tbaa !13
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %.not4 = icmp eq ptr %12, null
  br i1 %.not4, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %2
  %13 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  ret i32 0

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.05 = phi ptr [ %17, %.lr.ph ], [ %12, %2 ]
  %14 = load i8, ptr %.05, align 8, !tbaa !14
  %15 = sext i8 %14 to i32
  %16 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %15)
  %17 = call ptr @getNext(ptr noundef nonnull %.05)
  %.not = icmp eq ptr %17, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !15
}

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #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 = { 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 = { 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 = !{!12, !10, i64 28}
!12 = !{!"TreeNode", !7, i64 0, !6, i64 8, !6, i64 16, !10, i64 24, !10, i64 28}
!13 = !{!12, !6, i64 16}
!14 = !{!12, !7, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


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