; LLVM IR from niessner/Matterport :: code/gaps/pkgs/R3Graphics/R3SceneNode.ll (ZNK11R3SceneNode11IsDecendentEPKS_)

; 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"

; 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: inlinehint mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK11R3SceneNode6ParentEv(ptr noundef nonnull align 8 dereferenceable(432)) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZNK11R3SceneNode11IsDecendentEPKS_(ptr noundef nonnull align 8 dereferenceable(432) %0, ptr noundef %1) #2 align 2 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  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
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store ptr %8, ptr %6, align 8, !tbaa !5
  br label %9

9:                                                ; preds = %17, %2
  %10 = load ptr, ptr %6, align 8, !tbaa !5
  %11 = icmp ne ptr %10, null
  br i1 %11, label %12, label %20

12:                                               ; preds = %9
  %13 = load ptr, ptr %6, align 8, !tbaa !5
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = icmp eq ptr %13, %14
  br i1 %15, label %16, label %17

16:                                               ; preds = %12
  store i32 1, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %21

17:                                               ; preds = %12
  %18 = load ptr, ptr %6, align 8, !tbaa !5
  %19 = call noundef ptr @_ZNK11R3SceneNode6ParentEv(ptr noundef nonnull align 8 dereferenceable(432) %18)
  store ptr %19, ptr %6, align 8, !tbaa !5
  br label %9, !llvm.loop !9

20:                                               ; preds = %9
  store i32 0, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %21

21:                                               ; preds = %20, %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  %22 = load i32, ptr %3, align 4
  ret i32 %22
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { inlinehint mustprogress 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 = { 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 #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++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"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: inlinehint mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK11R3SceneNode6ParentEv(ptr noundef nonnull align 8 dereferenceable(432)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef range(i32 0, 2) i32 @_ZNK11R3SceneNode11IsDecendentEPKS_(ptr noundef nonnull align 8 dereferenceable(432) %0, ptr noundef readnone %1) local_unnamed_addr #1 align 2 {
  br label %3

3:                                                ; preds = %2, %5
  %.06 = phi ptr [ %0, %2 ], [ %6, %5 ]
  %4 = icmp eq ptr %.06, %1
  br i1 %4, label %7, label %5

5:                                                ; preds = %3
  %6 = tail call noundef ptr @_ZNK11R3SceneNode6ParentEv(ptr noundef nonnull align 8 dereferenceable(432) %.06)
  %.not = icmp eq ptr %6, null
  br i1 %.not, label %7, label %3, !llvm.loop !5

7:                                                ; preds = %5, %3
  %.05 = phi i32 [ 1, %3 ], [ 0, %5 ]
  ret i32 %.05
}

attributes #0 = { inlinehint mustprogress 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 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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