; LLVM IR from jingweizhanghuai/Morn :: src/util (morn_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"

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

; 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
define dso_local ptr @TreeSearch(ptr noundef %0, ptr noundef %1, ptr noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca ptr, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  %11 = load ptr, ptr %6, align 8, !tbaa !5
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  %13 = load ptr, ptr %7, align 8, !tbaa !5
  %14 = call i32 %11(ptr noundef %12, ptr noundef %13)
  %15 = icmp eq i32 %14, 1
  br i1 %15, label %16, label %18

16:                                               ; preds = %3
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %17, ptr %4, align 8
  br label %51

18:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 0, ptr %8, align 4, !tbaa !9
  br label %19

19:                                               ; preds = %45, %18
  %20 = load i32, ptr %8, align 4, !tbaa !9
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.MTreeNode, ptr %21, i32 0, i32 3
  %23 = load i32, ptr %22, align 8, !tbaa !11
  %24 = icmp slt i32 %20, %23
  br i1 %24, label %26, label %25

25:                                               ; preds = %19
  store i32 2, ptr %9, align 4
  br label %48

26:                                               ; preds = %19
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #2
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.MTreeNode, ptr %27, i32 0, i32 1
  %29 = load ptr, ptr %28, align 8, !tbaa !13
  %30 = load i32, ptr %8, align 4, !tbaa !9
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds ptr, ptr %29, i64 %31
  %33 = load ptr, ptr %32, align 8, !tbaa !5
  %34 = load ptr, ptr %6, align 8, !tbaa !5
  %35 = load ptr, ptr %7, align 8, !tbaa !5
  %36 = call ptr @TreeSearch(ptr noundef %33, ptr noundef %34, ptr noundef %35)
  store ptr %36, ptr %10, align 8, !tbaa !5
  %37 = load ptr, ptr %10, align 8, !tbaa !5
  %38 = icmp ne ptr %37, null
  br i1 %38, label %39, label %41

39:                                               ; preds = %26
  %40 = load ptr, ptr %10, align 8, !tbaa !5
  store ptr %40, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %42

41:                                               ; preds = %26
  store i32 0, ptr %9, align 4
  br label %42

42:                                               ; preds = %41, %39
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #2
  %43 = load i32, ptr %9, align 4
  switch i32 %43, label %48 [
    i32 0, label %44
  ]

44:                                               ; preds = %42
  br label %45

45:                                               ; preds = %44
  %46 = load i32, ptr %8, align 4, !tbaa !9
  %47 = add nsw i32 %46, 1
  store i32 %47, ptr %8, align 4, !tbaa !9
  br label %19, !llvm.loop !14

48:                                               ; preds = %42, %25
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  %49 = load i32, ptr %9, align 4
  switch i32 %49, label %53 [
    i32 2, label %50
    i32 1, label %51
  ]

50:                                               ; preds = %48
  store ptr null, ptr %4, align 8
  br label %51

51:                                               ; preds = %50, %48, %16
  %52 = load ptr, ptr %4, align 8
  ret ptr %52

53:                                               ; preds = %48
  unreachable
}

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 24}
!12 = !{!"MTreeNode", !6, i64 0, !6, i64 8, !6, i64 16, !10, i64 24}
!13 = !{!12, !6, i64 8}
!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"

; Function Attrs: nounwind uwtable
define dso_local ptr @TreeSearch(ptr noundef %0, ptr nocapture noundef readonly %1, ptr noundef %2) local_unnamed_addr #0 {
  %4 = tail call i32 %1(ptr noundef %0, ptr noundef %2) #1
  %5 = icmp eq i32 %4, 1
  br i1 %5, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %3
  %6 = getelementptr inbounds i8, ptr %0, i64 8
  %7 = getelementptr inbounds i8, ptr %0, i64 24
  %8 = load i32, ptr %7, align 8, !tbaa !5
  %.not1920 = icmp sgt i32 %8, 0
  br i1 %.not1920, label %.lr.ph, label %.loopexit

9:                                                ; preds = %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %10 = load i32, ptr %7, align 8, !tbaa !5
  %11 = sext i32 %10 to i64
  %.not19 = icmp slt i64 %indvars.iv.next, %11
  br i1 %.not19, label %.lr.ph, label %.loopexit, !llvm.loop !11

.lr.ph:                                           ; preds = %.preheader, %9
  %indvars.iv = phi i64 [ %indvars.iv.next, %9 ], [ 0, %.preheader ]
  %12 = load ptr, ptr %6, align 8, !tbaa !13
  %13 = getelementptr inbounds ptr, ptr %12, i64 %indvars.iv
  %14 = load ptr, ptr %13, align 8, !tbaa !14
  %15 = tail call ptr @TreeSearch(ptr noundef %14, ptr noundef %1, ptr noundef %2)
  %.not = icmp eq ptr %15, null
  br i1 %.not, label %9, label %.loopexit

.loopexit:                                        ; preds = %9, %.lr.ph, %.preheader, %3
  %.3 = phi ptr [ %0, %3 ], [ null, %.preheader ], [ null, %9 ], [ %15, %.lr.ph ]
  ret ptr %.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 = { 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 24}
!6 = !{!"MTreeNode", !7, i64 0, !7, i64 8, !7, i64 16, !10, i64 24}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!6, !7, i64 8}
!14 = !{!7, !7, i64 0}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass