; LLVM IR from int32bit/leetcode :: algorithms/KthSmallestElementinaBST (tree)

; 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"

%class.Solution = type { i8 }
%struct.TreeNode = type { i32, ptr, ptr }

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

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_Z8mk_childP8TreeNodeii(ptr noundef, i32 noundef, i32 noundef) #0

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_Z8mk_childiii(i32 noundef, i32 noundef, i32 noundef) #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca %class.Solution, align 1
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  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 1, ptr %6) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  %9 = call noundef ptr @_Z8mk_childiii(i32 noundef 6, i32 noundef 4, i32 noundef 8)
  store ptr %9, ptr %7, align 8, !tbaa !9
  %10 = load ptr, ptr %7, align 8, !tbaa !9
  %11 = getelementptr inbounds %struct.TreeNode, ptr %10, i32 0, i32 1
  %12 = load ptr, ptr %11, align 8, !tbaa !11
  %13 = call noundef ptr @_Z8mk_childP8TreeNodeii(ptr noundef %12, i32 noundef 3, i32 noundef 5)
  %14 = load ptr, ptr %7, align 8, !tbaa !9
  %15 = getelementptr inbounds %struct.TreeNode, ptr %14, i32 0, i32 2
  %16 = load ptr, ptr %15, align 8, !tbaa !13
  %17 = call noundef ptr @_Z8mk_childP8TreeNodeii(ptr noundef %16, i32 noundef 7, i32 noundef 9)
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  store i32 1, ptr %8, align 4, !tbaa !5
  br label %18

18:                                               ; preds = %27, %2
  %19 = load i32, ptr %8, align 4, !tbaa !5
  %20 = icmp sle i32 %19, 7
  br i1 %20, label %22, label %21

21:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  br label %30

22:                                               ; preds = %18
  %23 = load ptr, ptr %7, align 8, !tbaa !9
  %24 = load i32, ptr %8, align 4, !tbaa !5
  %25 = call noundef i32 @_ZN8Solution11kthSmallestEP8TreeNodei(ptr noundef nonnull align 1 dereferenceable(1) %6, ptr noundef %23, i32 noundef %24)
  %26 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %25)
  br label %27

27:                                               ; preds = %22
  %28 = load i32, ptr %8, align 4, !tbaa !5
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr %8, align 4, !tbaa !5
  br label %18, !llvm.loop !14

30:                                               ; preds = %21
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #4
  ret i32 0
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

declare i32 @printf(ptr noundef, ...) #3

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN8Solution11kthSmallestEP8TreeNodei(ptr noundef nonnull align 1 dereferenceable(1), ptr noundef, i32 noundef) #0 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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" }
attributes #1 = { mustprogress norecurse 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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 #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, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !10, i64 8}
!12 = !{!"_ZTS8TreeNode", !6, i64 0, !10, i64 8, !10, i64 16}
!13 = !{!12, !10, i64 16}
!14 = distinct !{!14, !15}
!15 = !{!"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"

%class.Solution = type { i8 }

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

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_Z8mk_childP8TreeNodeii(ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_Z8mk_childiii(i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr nocapture noundef readnone %1) local_unnamed_addr #1 {
  %3 = alloca %class.Solution, align 1
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %3) #4
  %4 = tail call noundef ptr @_Z8mk_childiii(i32 noundef 6, i32 noundef 4, i32 noundef 8)
  %5 = getelementptr inbounds i8, ptr %4, i64 8
  %6 = load ptr, ptr %5, align 8, !tbaa !5
  %7 = tail call noundef ptr @_Z8mk_childP8TreeNodeii(ptr noundef %6, i32 noundef 3, i32 noundef 5)
  %8 = getelementptr inbounds i8, ptr %4, i64 16
  %9 = load ptr, ptr %8, align 8, !tbaa !11
  %10 = tail call noundef ptr @_Z8mk_childP8TreeNodeii(ptr noundef %9, i32 noundef 7, i32 noundef 9)
  %11 = call noundef i32 @_ZN8Solution11kthSmallestEP8TreeNodei(ptr noundef nonnull align 1 dereferenceable(1) %3, ptr noundef %4, i32 noundef 1)
  %12 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %11)
  %13 = call noundef i32 @_ZN8Solution11kthSmallestEP8TreeNodei(ptr noundef nonnull align 1 dereferenceable(1) %3, ptr noundef %4, i32 noundef 2)
  %14 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %13)
  %15 = call noundef i32 @_ZN8Solution11kthSmallestEP8TreeNodei(ptr noundef nonnull align 1 dereferenceable(1) %3, ptr noundef %4, i32 noundef 3)
  %16 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %15)
  %17 = call noundef i32 @_ZN8Solution11kthSmallestEP8TreeNodei(ptr noundef nonnull align 1 dereferenceable(1) %3, ptr noundef %4, i32 noundef 4)
  %18 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %17)
  %19 = call noundef i32 @_ZN8Solution11kthSmallestEP8TreeNodei(ptr noundef nonnull align 1 dereferenceable(1) %3, ptr noundef %4, i32 noundef 5)
  %20 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %19)
  %21 = call noundef i32 @_ZN8Solution11kthSmallestEP8TreeNodei(ptr noundef nonnull align 1 dereferenceable(1) %3, ptr noundef %4, i32 noundef 6)
  %22 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %21)
  %23 = call noundef i32 @_ZN8Solution11kthSmallestEP8TreeNodei(ptr noundef nonnull align 1 dereferenceable(1) %3, ptr noundef %4, i32 noundef 7)
  %24 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %23)
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %3) #4
  ret i32 0
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN8Solution11kthSmallestEP8TreeNodei(ptr noundef nonnull align 1 dereferenceable(1), ptr noundef, i32 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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" }
attributes #1 = { mustprogress norecurse 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #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, !10, i64 8}
!6 = !{!"_ZTS8TreeNode", !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: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass