; LLVM IR from niessner/Matterport :: code/gaps/pkgs/R3Graphics/R3Scene.ll (ZN7R3Scene16RemoveReferencesEv)

; 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.R3Scene = type { ptr, %class.RNArray, %class.RNArray.0, %class.RNArray.1, %class.RNArray.2, %class.RNArray.3, %class.RNArray.4, %class.RNSymbolTable, %class.R3Viewer, %class.RNRgb, %class.RNRgb, ptr, ptr, ptr }
%class.RNArray = type { %class.RNVArray }
%class.RNVArray = type { ptr, i32, i32 }
%class.RNArray.0 = type { %class.RNVArray }
%class.RNArray.1 = type { %class.RNVArray }
%class.RNArray.2 = type { %class.RNVArray }
%class.RNArray.3 = type { %class.RNVArray }
%class.RNArray.4 = type { %class.RNVArray }
%class.RNSymbolTable = type { %class.RNMap }
%class.RNMap = type { ptr }
%class.R3Viewer = type { ptr, %class.R3Camera, %class.R2Viewport }
%class.R3Camera = type { %class.R3CoordSystem, double, double, double, double, double, ptr }
%class.R3CoordSystem = type { %class.R3Point, %class.R3Triad }
%class.R3Point = type { [3 x double] }
%class.R3Triad = type { [3 x %class.R3Vector] }
%class.R3Vector = type { [3 x double] }
%class.R2Viewport = type { i32, i32, i32, i32 }
%class.RNRgb = type { [3 x double] }

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i32 @_ZNK7R3Scene17NReferencedScenesEv(ptr noundef nonnull align 8 dereferenceable(352)) #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef ptr @_ZNK7R3Scene15ReferencedSceneEi(ptr noundef nonnull align 8 dereferenceable(352), i32 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7R3Scene21RemoveReferencedSceneEPS_(ptr noundef nonnull align 8 dereferenceable(352), ptr noundef) #3 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN7R3Scene16RemoveReferencesEv(ptr noundef nonnull align 8 dereferenceable(352) %0) #3 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8
  %5 = getelementptr inbounds %class.R3Scene, ptr %4, i32 0, i32 0
  %6 = load ptr, ptr %5, align 8, !tbaa !9
  call void @_ZL23R3SceneRemoveReferencesP7R3SceneP11R3SceneNode(ptr noundef %4, ptr noundef %6)
  br label %7

7:                                                ; preds = %16, %1
  %8 = call noundef i32 @_ZNK7R3Scene17NReferencedScenesEv(ptr noundef nonnull align 8 dereferenceable(352) %4)
  %9 = icmp sgt i32 %8, 0
  br i1 %9, label %10, label %17

10:                                               ; preds = %7
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  %11 = call noundef ptr @_ZNK7R3Scene15ReferencedSceneEi(ptr noundef nonnull align 8 dereferenceable(352) %4, i32 noundef 0)
  store ptr %11, ptr %3, align 8, !tbaa !5
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  call void @_ZN7R3Scene21RemoveReferencedSceneEPS_(ptr noundef nonnull align 8 dereferenceable(352) %4, ptr noundef %12)
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = icmp eq ptr %13, null
  br i1 %14, label %16, label %15

15:                                               ; preds = %10
  call void @_ZN7R3SceneD1Ev(ptr noundef nonnull align 8 dereferenceable(352) %13) #4
  call void @_ZdlPvm(ptr noundef %13, i64 noundef 352) #5
  br label %16

16:                                               ; preds = %15, %10
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  br label %7, !llvm.loop !29

17:                                               ; preds = %7
  ret void
}

; Function Attrs: mustprogress uwtable
declare hidden void @_ZL23R3SceneRemoveReferencesP7R3SceneP11R3SceneNode(ptr noundef, ptr noundef) #3

declare void @_ZN7R3SceneD1Ev(ptr)

attributes #0 = { nobuiltin 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { inlinehint 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 = { 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 #4 = { nounwind }
attributes #5 = { builtin 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 = !{!10, !6, i64 0}
!10 = !{!"_ZTS7R3Scene", !6, i64 0, !11, i64 8, !14, i64 24, !15, i64 40, !16, i64 56, !17, i64 72, !18, i64 88, !19, i64 104, !21, i64 112, !28, i64 280, !28, i64 304, !6, i64 328, !6, i64 336, !6, i64 344}
!11 = !{!"_ZTS7RNArrayIP11R3SceneNodeE", !12, i64 0}
!12 = !{!"_ZTS8RNVArray", !6, i64 0, !13, i64 8, !13, i64 12}
!13 = !{!"int", !7, i64 0}
!14 = !{!"_ZTS7RNArrayIP7R3LightE", !12, i64 0}
!15 = !{!"_ZTS7RNArrayIP10R3MaterialE", !12, i64 0}
!16 = !{!"_ZTS7RNArrayIP6R3BrdfE", !12, i64 0}
!17 = !{!"_ZTS7RNArrayIP9R2TextureE", !12, i64 0}
!18 = !{!"_ZTS7RNArrayIP7R3SceneE", !12, i64 0}
!19 = !{!"_ZTS13RNSymbolTableIPKcE", !20, i64 0}
!20 = !{!"_ZTS5RNMapINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPKcE", !6, i64 0}
!21 = !{!"_ZTS8R3Viewer", !22, i64 8, !27, i64 152}
!22 = !{!"_ZTS8R3Camera", !23, i64 0, !26, i64 96, !26, i64 104, !26, i64 112, !26, i64 120, !26, i64 128, !6, i64 136}
!23 = !{!"_ZTS13R3CoordSystem", !24, i64 0, !25, i64 24}
!24 = !{!"_ZTS7R3Point", !7, i64 0}
!25 = !{!"_ZTS7R3Triad", !7, i64 0}
!26 = !{!"double", !7, i64 0}
!27 = !{!"_ZTS10R2Viewport", !13, i64 0, !13, i64 4, !13, i64 8, !13, i64 12}
!28 = !{!"_ZTS5RNRgb", !7, i64 0}
!29 = distinct !{!29, !30}
!30 = !{!"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: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i32 @_ZNK7R3Scene17NReferencedScenesEv(ptr noundef nonnull align 8 dereferenceable(352)) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef ptr @_ZNK7R3Scene15ReferencedSceneEi(ptr noundef nonnull align 8 dereferenceable(352), i32 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7R3Scene21RemoveReferencedSceneEPS_(ptr noundef nonnull align 8 dereferenceable(352), ptr noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN7R3Scene16RemoveReferencesEv(ptr noundef nonnull align 8 dereferenceable(352) %0) local_unnamed_addr #2 align 2 {
  %2 = load ptr, ptr %0, align 8, !tbaa !5
  tail call void @_ZL23R3SceneRemoveReferencesP7R3SceneP11R3SceneNode(ptr noundef nonnull %0, ptr noundef %2)
  %3 = tail call noundef i32 @_ZNK7R3Scene17NReferencedScenesEv(ptr noundef nonnull align 8 dereferenceable(352) %0)
  %4 = icmp sgt i32 %3, 0
  br i1 %4, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1, %8
  %5 = tail call noundef ptr @_ZNK7R3Scene15ReferencedSceneEi(ptr noundef nonnull align 8 dereferenceable(352) %0, i32 noundef 0)
  tail call void @_ZN7R3Scene21RemoveReferencedSceneEPS_(ptr noundef nonnull align 8 dereferenceable(352) %0, ptr noundef %5)
  %6 = icmp eq ptr %5, null
  br i1 %6, label %8, label %7

7:                                                ; preds = %.lr.ph
  tail call void @_ZN7R3SceneD1Ev(ptr noundef nonnull align 8 dereferenceable(352) %5) #3
  tail call void @_ZdlPvm(ptr noundef nonnull %5, i64 noundef 352) #4
  br label %8

8:                                                ; preds = %7, %.lr.ph
  %9 = tail call noundef i32 @_ZNK7R3Scene17NReferencedScenesEv(ptr noundef nonnull align 8 dereferenceable(352) %0)
  %10 = icmp sgt i32 %9, 0
  br i1 %10, label %.lr.ph, label %._crit_edge, !llvm.loop !28

._crit_edge:                                      ; preds = %8, %1
  ret void
}

; Function Attrs: mustprogress uwtable
declare hidden void @_ZL23R3SceneRemoveReferencesP7R3SceneP11R3SceneNode(ptr noundef, ptr noundef) local_unnamed_addr #2

declare void @_ZN7R3SceneD1Ev(ptr) local_unnamed_addr

attributes #0 = { nobuiltin 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 #1 = { inlinehint 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 #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 }
attributes #4 = { builtin 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 = !{!"_ZTS7R3Scene", !7, i64 0, !10, i64 8, !13, i64 24, !14, i64 40, !15, i64 56, !16, i64 72, !17, i64 88, !18, i64 104, !20, i64 112, !27, i64 280, !27, i64 304, !7, i64 328, !7, i64 336, !7, i64 344}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"_ZTS7RNArrayIP11R3SceneNodeE", !11, i64 0}
!11 = !{!"_ZTS8RNVArray", !7, i64 0, !12, i64 8, !12, i64 12}
!12 = !{!"int", !8, i64 0}
!13 = !{!"_ZTS7RNArrayIP7R3LightE", !11, i64 0}
!14 = !{!"_ZTS7RNArrayIP10R3MaterialE", !11, i64 0}
!15 = !{!"_ZTS7RNArrayIP6R3BrdfE", !11, i64 0}
!16 = !{!"_ZTS7RNArrayIP9R2TextureE", !11, i64 0}
!17 = !{!"_ZTS7RNArrayIP7R3SceneE", !11, i64 0}
!18 = !{!"_ZTS13RNSymbolTableIPKcE", !19, i64 0}
!19 = !{!"_ZTS5RNMapINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPKcE", !7, i64 0}
!20 = !{!"_ZTS8R3Viewer", !21, i64 8, !26, i64 152}
!21 = !{!"_ZTS8R3Camera", !22, i64 0, !25, i64 96, !25, i64 104, !25, i64 112, !25, i64 120, !25, i64 128, !7, i64 136}
!22 = !{!"_ZTS13R3CoordSystem", !23, i64 0, !24, i64 24}
!23 = !{!"_ZTS7R3Point", !8, i64 0}
!24 = !{!"_ZTS7R3Triad", !8, i64 0}
!25 = !{!"double", !8, i64 0}
!26 = !{!"_ZTS10R2Viewport", !12, i64 0, !12, i64 4, !12, i64 8, !12, i64 12}
!27 = !{!"_ZTS5RNRgb", !8, i64 0}
!28 = distinct !{!28, !29}
!29 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass