; LLVM IR from AlgoGenesis/C :: Linked_list/Linkedlist_to_BST (program)

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

; 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 @createTreeNode(i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local ptr @sortedListToBSTHelper(ptr noundef %0, i32 noundef %1) #1 {
  %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 i32, ptr %5, align 4, !tbaa !9
  %9 = icmp sle i32 %8, 0
  br i1 %9, label %10, label %11

10:                                               ; preds = %2
  store ptr null, ptr %3, align 8
  br label %39

11:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = load i32, ptr %5, align 4, !tbaa !9
  %14 = sdiv i32 %13, 2
  %15 = call ptr @sortedListToBSTHelper(ptr noundef %12, i32 noundef %14)
  store ptr %15, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = load ptr, ptr %16, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.ListNode, ptr %17, i32 0, i32 0
  %19 = load i32, ptr %18, align 8, !tbaa !11
  %20 = call ptr @createTreeNode(i32 noundef %19)
  store ptr %20, ptr %7, align 8, !tbaa !5
  %21 = load ptr, ptr %6, align 8, !tbaa !5
  %22 = load ptr, ptr %7, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.TreeNode, ptr %22, i32 0, i32 1
  store ptr %21, ptr %23, align 8, !tbaa !13
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = load ptr, ptr %24, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.ListNode, ptr %25, i32 0, i32 1
  %27 = load ptr, ptr %26, align 8, !tbaa !15
  %28 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %27, ptr %28, align 8, !tbaa !5
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  %30 = load i32, ptr %5, align 4, !tbaa !9
  %31 = load i32, ptr %5, align 4, !tbaa !9
  %32 = sdiv i32 %31, 2
  %33 = sub nsw i32 %30, %32
  %34 = sub nsw i32 %33, 1
  %35 = call ptr @sortedListToBSTHelper(ptr noundef %29, i32 noundef %34)
  %36 = load ptr, ptr %7, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.TreeNode, ptr %36, i32 0, i32 2
  store ptr %35, ptr %37, align 8, !tbaa !16
  %38 = load ptr, ptr %7, align 8, !tbaa !5
  store ptr %38, ptr %3, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  br label %39

39:                                               ; preds = %11, %10
  %40 = load ptr, ptr %3, align 8
  ret ptr %40
}

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 = { 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 0}
!12 = !{!"ListNode", !10, i64 0, !6, i64 8}
!13 = !{!14, !6, i64 8}
!14 = !{!"TreeNode", !10, i64 0, !6, i64 8, !6, i64 16}
!15 = !{!12, !6, i64 8}
!16 = !{!14, !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: nounwind uwtable
declare dso_local ptr @createTreeNode(i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local ptr @sortedListToBSTHelper(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp slt i32 %1, 1
  br i1 %3, label %common.ret14, label %4

common.ret14:                                     ; preds = %2, %4
  %common.ret14.op = phi ptr [ %9, %4 ], [ null, %2 ]
  ret ptr %common.ret14.op

4:                                                ; preds = %2
  %5 = lshr i32 %1, 1
  %6 = tail call ptr @sortedListToBSTHelper(ptr noundef %0, i32 noundef %5)
  %7 = load ptr, ptr %0, align 8, !tbaa !5
  %8 = load i32, ptr %7, align 8, !tbaa !9
  %9 = tail call ptr @createTreeNode(i32 noundef %8)
  %10 = getelementptr inbounds i8, ptr %9, i64 8
  store ptr %6, ptr %10, align 8, !tbaa !12
  %11 = load ptr, ptr %0, align 8, !tbaa !5
  %12 = getelementptr inbounds i8, ptr %11, i64 8
  %13 = load ptr, ptr %12, align 8, !tbaa !14
  store ptr %13, ptr %0, align 8, !tbaa !5
  %14 = xor i32 %5, -1
  %15 = add nsw i32 %14, %1
  %16 = tail call ptr @sortedListToBSTHelper(ptr noundef nonnull %0, i32 noundef %15)
  %17 = getelementptr inbounds i8, ptr %9, i64 16
  store ptr %16, ptr %17, align 8, !tbaa !15
  br label %common.ret14
}

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" }

!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, !11, i64 0}
!10 = !{!"ListNode", !11, i64 0, !6, i64 8}
!11 = !{!"int", !7, i64 0}
!12 = !{!13, !6, i64 8}
!13 = !{!"TreeNode", !11, i64 0, !6, i64 8, !6, i64 16}
!14 = !{!10, !6, i64 8}
!15 = !{!13, !6, i64 16}


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