; LLVM IR from niessner/Matterport :: code/gaps/pkgs/R3Graphics/R3Scene.ll (ZNK7R3Scene15ReferencedSceneEPKc)

; 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: nounwind willreturn memory(read)
declare i32 @strcmp(ptr noundef, ptr noundef) #1

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

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_ZNK7R3Scene15ReferencedSceneEPKc(ptr noundef nonnull align 8 dereferenceable(352) %0, ptr noundef %1) #2 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %9 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %10

10:                                               ; preds = %34, %2
  %11 = load i32, ptr %6, align 4, !tbaa !9
  %12 = call noundef i32 @_ZNK7R3Scene17NReferencedScenesEv(ptr noundef nonnull align 8 dereferenceable(352) %9)
  %13 = icmp slt i32 %11, %12
  br i1 %13, label %15, label %14

14:                                               ; preds = %10
  store i32 2, ptr %7, align 4
  br label %37

15:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #5
  %16 = load i32, ptr %6, align 4, !tbaa !9
  %17 = call noundef ptr @_ZNK7R3Scene15ReferencedSceneEi(ptr noundef nonnull align 8 dereferenceable(352) %9, i32 noundef %16)
  store ptr %17, ptr %8, align 8, !tbaa !5
  %18 = load ptr, ptr %8, align 8, !tbaa !5
  %19 = call noundef ptr @_ZNK7R3Scene4NameEv(ptr noundef nonnull align 8 dereferenceable(352) %18)
  %20 = icmp ne ptr %19, null
  br i1 %20, label %22, label %21

21:                                               ; preds = %15
  store i32 4, ptr %7, align 4
  br label %31

22:                                               ; preds = %15
  %23 = load ptr, ptr %8, align 8, !tbaa !5
  %24 = call noundef ptr @_ZNK7R3Scene4NameEv(ptr noundef nonnull align 8 dereferenceable(352) %23)
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = call i32 @strcmp(ptr noundef %24, ptr noundef %25) #6
  %27 = icmp ne i32 %26, 0
  br i1 %27, label %30, label %28

28:                                               ; preds = %22
  %29 = load ptr, ptr %8, align 8, !tbaa !5
  store ptr %29, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %31

30:                                               ; preds = %22
  store i32 0, ptr %7, align 4
  br label %31

31:                                               ; preds = %30, %28, %21
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #5
  %32 = load i32, ptr %7, align 4
  switch i32 %32, label %37 [
    i32 0, label %33
    i32 4, label %34
  ]

33:                                               ; preds = %31
  br label %34

34:                                               ; preds = %33, %31
  %35 = load i32, ptr %6, align 4, !tbaa !9
  %36 = add nsw i32 %35, 1
  store i32 %36, ptr %6, align 4, !tbaa !9
  br label %10, !llvm.loop !11

37:                                               ; preds = %31, %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  %38 = load i32, ptr %7, align 4
  switch i32 %38, label %42 [
    i32 2, label %39
    i32 1, label %40
  ]

39:                                               ; preds = %37
  store ptr null, ptr %3, align 8
  br label %40

40:                                               ; preds = %39, %37
  %41 = load ptr, ptr %3, align 8
  ret ptr %41

42:                                               ; preds = %37
  unreachable
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i32 @_ZNK7R3Scene17NReferencedScenesEv(ptr noundef nonnull align 8 dereferenceable(352)) #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef ptr @_ZNK7R3Scene15ReferencedSceneEi(ptr noundef nonnull align 8 dereferenceable(352), i32 noundef) #3 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK7R3Scene4NameEv(ptr noundef nonnull align 8 dereferenceable(352)) #4 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind willreturn memory(read) "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 = { 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 #4 = { 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 #5 = { nounwind }
attributes #6 = { nounwind willreturn memory(read) }

!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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i32 @strcmp(ptr nocapture noundef, ptr nocapture noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_ZNK7R3Scene15ReferencedSceneEPKc(ptr noundef nonnull align 8 dereferenceable(352) %0, ptr nocapture noundef readonly %1) local_unnamed_addr #1 align 2 {
  %3 = tail call noundef i32 @_ZNK7R3Scene17NReferencedScenesEv(ptr noundef nonnull align 8 dereferenceable(352) %0)
  %.not1718 = icmp sgt i32 %3, 0
  br i1 %.not1718, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2, %9
  %.01219 = phi i32 [ %10, %9 ], [ 0, %2 ]
  %4 = tail call noundef ptr @_ZNK7R3Scene15ReferencedSceneEi(ptr noundef nonnull align 8 dereferenceable(352) %0, i32 noundef %.01219)
  %5 = tail call noundef ptr @_ZNK7R3Scene4NameEv(ptr noundef nonnull align 8 dereferenceable(352) %4)
  %.not = icmp eq ptr %5, null
  br i1 %.not, label %9, label %6

6:                                                ; preds = %.lr.ph
  %7 = tail call noundef ptr @_ZNK7R3Scene4NameEv(ptr noundef nonnull align 8 dereferenceable(352) %4)
  %8 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %7, ptr noundef nonnull dereferenceable(1) %1) #4
  %.not13 = icmp eq i32 %8, 0
  br i1 %.not13, label %._crit_edge, label %9

9:                                                ; preds = %.lr.ph, %6
  %10 = add nuw nsw i32 %.01219, 1
  %11 = tail call noundef i32 @_ZNK7R3Scene17NReferencedScenesEv(ptr noundef nonnull align 8 dereferenceable(352) %0)
  %.not17 = icmp slt i32 %10, %11
  br i1 %.not17, label %.lr.ph, label %._crit_edge, !llvm.loop !5

._crit_edge:                                      ; preds = %9, %6, %2
  %spec.select = phi ptr [ null, %2 ], [ %4, %6 ], [ null, %9 ]
  ret ptr %spec.select
}

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK7R3Scene4NameEv(ptr noundef nonnull align 8 dereferenceable(352)) local_unnamed_addr #3 align 2

attributes #0 = { mustprogress nofree nounwind willreturn memory(argmem: read) "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 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 = { 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 = { 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 #4 = { nounwind willreturn memory(read) }

!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: CorrelatedValuePropagationPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass