; LLVM IR from asset-ai/simple-vector-db :: src (kdtree)

; 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.KDTree = type { ptr, i64 }
%struct.KDTreeNode = type { ptr, i64, 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 @kdtree_nearest_rec(ptr noundef, ptr noundef, i64 noundef, i64 noundef, ptr noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i64 @kdtree_nearest(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca i64, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca double, align 8
  %7 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = icmp eq ptr %8, null
  br i1 %9, label %15, label %10

10:                                               ; preds = %2
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.KDTree, ptr %11, i32 0, i32 0
  %13 = load ptr, ptr %12, align 8, !tbaa !9
  %14 = icmp eq ptr %13, null
  br i1 %14, label %15, label %16

15:                                               ; preds = %10, %2
  store i64 -1, ptr %3, align 8
  br label %34

16:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  store double 0x7FF0000000000000, ptr %6, align 8, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.KDTree, ptr %17, i32 0, i32 0
  %19 = load ptr, ptr %18, align 8, !tbaa !9
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.KDTree, ptr %21, i32 0, i32 1
  %23 = load i64, ptr %22, align 8, !tbaa !14
  %24 = call ptr @kdtree_nearest_rec(ptr noundef %19, ptr noundef %20, i64 noundef 0, i64 noundef %23, ptr noundef null, ptr noundef %6)
  store ptr %24, ptr %7, align 8, !tbaa !5
  %25 = load ptr, ptr %7, align 8, !tbaa !5
  %26 = icmp ne ptr %25, null
  br i1 %26, label %27, label %31

27:                                               ; preds = %16
  %28 = load ptr, ptr %7, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.KDTreeNode, ptr %28, i32 0, i32 1
  %30 = load i64, ptr %29, align 8, !tbaa !15
  br label %32

31:                                               ; preds = %16
  br label %32

32:                                               ; preds = %31, %27
  %33 = phi i64 [ %30, %27 ], [ -1, %31 ]
  store i64 %33, 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 %34

34:                                               ; preds = %32, %15
  %35 = load i64, ptr %3, align 8
  ret i64 %35
}

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, !6, i64 0}
!10 = !{!"KDTree", !6, i64 0, !11, i64 8}
!11 = !{!"long", !7, i64 0}
!12 = !{!13, !13, i64 0}
!13 = !{!"double", !7, i64 0}
!14 = !{!10, !11, i64 8}
!15 = !{!16, !11, i64 8}
!16 = !{!"KDTreeNode", !6, i64 0, !11, i64 8, !6, i64 16, !6, i64 24}


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

; Function Attrs: mustprogress 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 @kdtree_nearest_rec(ptr noundef, ptr noundef, i64 noundef, i64 noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local i64 @kdtree_nearest(ptr noundef readonly %0, ptr noundef %1) local_unnamed_addr #1 {
  %3 = alloca double, align 8
  %4 = icmp eq ptr %0, null
  br i1 %4, label %17, label %5

5:                                                ; preds = %2
  %6 = load ptr, ptr %0, align 8, !tbaa !5
  %7 = icmp eq ptr %6, null
  br i1 %7, label %17, label %8

8:                                                ; preds = %5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #2
  store double 0x7FF0000000000000, ptr %3, align 8, !tbaa !11
  %9 = getelementptr inbounds i8, ptr %0, i64 8
  %10 = load i64, ptr %9, align 8, !tbaa !13
  %11 = call ptr @kdtree_nearest_rec(ptr noundef nonnull %6, ptr noundef %1, i64 noundef 0, i64 noundef %10, ptr noundef null, ptr noundef nonnull %3)
  %.not = icmp eq ptr %11, null
  br i1 %.not, label %15, label %12

12:                                               ; preds = %8
  %13 = getelementptr inbounds i8, ptr %11, i64 8
  %14 = load i64, ptr %13, align 8, !tbaa !14
  br label %15

15:                                               ; preds = %8, %12
  %16 = phi i64 [ %14, %12 ], [ -1, %8 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #2
  br label %17

17:                                               ; preds = %2, %5, %15
  %.0 = phi i64 [ %16, %15 ], [ -1, %5 ], [ -1, %2 ]
  ret i64 %.0
}

attributes #0 = { mustprogress 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, !7, i64 0}
!6 = !{!"KDTree", !7, i64 0, !10, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"double", !8, i64 0}
!13 = !{!6, !10, i64 8}
!14 = !{!15, !10, i64 8}
!15 = !{!"KDTreeNode", !7, i64 0, !10, i64 8, !7, i64 16, !7, i64 24}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass