; LLVM IR from Overload-Technologies/Overload :: Dependencies/assimp/code/AssetLib/FBX/FBXModel.ll (ZNK6Assimp3FBX5Model6IsNullEv)

; 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.__gnu_cxx::__normal_iterator.54" = type { ptr }

@_ZTIN6Assimp3FBX13NodeAttributeE = external dso_local constant { ptr, ptr, ptr }, align 8
@_ZTIN6Assimp3FBX4NullE = external dso_local constant { ptr, ptr, ptr }, align 8

; 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 willreturn memory(read)
declare ptr @__dynamic_cast(ptr, ptr, ptr, i64) #1

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_ZNK6Assimp3FBX5Model6IsNullEv(ptr noundef nonnull align 8 dereferenceable(208) %0) #2 align 2 {
  %2 = alloca i1, align 1
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca %"class.__gnu_cxx::__normal_iterator.54", align 8
  %7 = alloca %"class.__gnu_cxx::__normal_iterator.54", align 8
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  %11 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #5
  %12 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNK6Assimp3FBX5Model13GetAttributesEv(ptr noundef nonnull align 8 dereferenceable(208) %11)
  store ptr %12, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #5
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %13, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #5
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = call ptr @_ZNKSt6vectorIPKN6Assimp3FBX13NodeAttributeESaIS4_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %14) #5
  %16 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.54", ptr %6, i32 0, i32 0
  store ptr %15, ptr %16, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #5
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = call ptr @_ZNKSt6vectorIPKN6Assimp3FBX13NodeAttributeESaIS4_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %17) #5
  %19 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.54", ptr %7, i32 0, i32 0
  store ptr %18, ptr %19, align 8
  br label %20

20:                                               ; preds = %43, %1
  %21 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPKPKN6Assimp3FBX13NodeAttributeESt6vectorIS5_SaIS5_EEEEbRKNS_17__normal_iteratorIT_T0_EESG_(ptr noundef nonnull align 8 dereferenceable(8) %6, ptr noundef nonnull align 8 dereferenceable(8) %7) #5
  br i1 %21, label %23, label %22

22:                                               ; preds = %20
  store i32 2, ptr %8, align 4
  br label %45

23:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #5
  %24 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKPKN6Assimp3FBX13NodeAttributeESt6vectorIS5_SaIS5_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #5
  %25 = load ptr, ptr %24, align 8, !tbaa !5
  store ptr %25, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #5
  %26 = load ptr, ptr %9, align 8, !tbaa !5
  %27 = icmp eq ptr %26, null
  br i1 %27, label %30, label %28

28:                                               ; preds = %23
  %29 = call ptr @__dynamic_cast(ptr %26, ptr @_ZTIN6Assimp3FBX13NodeAttributeE, ptr @_ZTIN6Assimp3FBX4NullE, i64 0) #5
  br label %31

30:                                               ; preds = %23
  br label %31

31:                                               ; preds = %30, %28
  %32 = phi ptr [ %29, %28 ], [ null, %30 ]
  store ptr %32, ptr %10, align 8, !tbaa !5
  %33 = load ptr, ptr %10, align 8, !tbaa !5
  %34 = icmp ne ptr %33, null
  br i1 %34, label %35, label %36

35:                                               ; preds = %31
  store i1 true, ptr %2, align 1
  store i32 1, ptr %8, align 4
  br label %37

36:                                               ; preds = %31
  store i32 0, ptr %8, align 4
  br label %37

37:                                               ; preds = %36, %35
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #5
  %38 = load i32, ptr %8, align 4
  switch i32 %38, label %40 [
    i32 0, label %39
  ]

39:                                               ; preds = %37
  store i32 0, ptr %8, align 4
  br label %40

40:                                               ; preds = %39, %37
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #5
  %41 = load i32, ptr %8, align 4
  switch i32 %41, label %45 [
    i32 0, label %42
  ]

42:                                               ; preds = %40
  br label %43

43:                                               ; preds = %42
  %44 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPKPKN6Assimp3FBX13NodeAttributeESt6vectorIS5_SaIS5_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #5
  br label %20

45:                                               ; preds = %40, %22
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #5
  %46 = load i32, ptr %8, align 4
  switch i32 %46, label %48 [
    i32 2, label %47
  ]

47:                                               ; preds = %45
  store i1 false, ptr %2, align 1
  store i32 1, ptr %8, align 4
  br label %48

48:                                               ; preds = %47, %45
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #5
  %49 = load i1, ptr %2, align 1
  ret i1 %49
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNK6Assimp3FBX5Model13GetAttributesEv(ptr noundef nonnull align 8 dereferenceable(208)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIPKN6Assimp3FBX13NodeAttributeESaIS4_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIPKN6Assimp3FBX13NodeAttributeESaIS4_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPKPKN6Assimp3FBX13NodeAttributeESt6vectorIS5_SaIS5_EEEEbRKNS_17__normal_iteratorIT_T0_EESG_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKPKN6Assimp3FBX13NodeAttributeESt6vectorIS5_SaIS5_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPKPKN6Assimp3FBX13NodeAttributeESt6vectorIS5_SaIS5_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #3 align 2

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

!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"}


; 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"

%"class.__gnu_cxx::__normal_iterator.54" = type { ptr }

@_ZTIN6Assimp3FBX13NodeAttributeE = external dso_local constant { ptr, ptr, ptr }, align 8
@_ZTIN6Assimp3FBX4NullE = external dso_local constant { ptr, ptr, ptr }, align 8

; 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: mustprogress nofree nounwind willreturn memory(read)
declare ptr @__dynamic_cast(ptr, ptr, ptr, i64) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_ZNK6Assimp3FBX5Model6IsNullEv(ptr noundef nonnull align 8 dereferenceable(208) %0) local_unnamed_addr #2 align 2 {
  %2 = alloca %"class.__gnu_cxx::__normal_iterator.54", align 8
  %3 = alloca %"class.__gnu_cxx::__normal_iterator.54", align 8
  %4 = tail call noundef nonnull align 8 dereferenceable(24) ptr @_ZNK6Assimp3FBX5Model13GetAttributesEv(ptr noundef nonnull align 8 dereferenceable(208) %0)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #4
  %5 = tail call ptr @_ZNKSt6vectorIPKN6Assimp3FBX13NodeAttributeESaIS4_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %4) #4
  store ptr %5, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  %6 = tail call ptr @_ZNKSt6vectorIPKN6Assimp3FBX13NodeAttributeESaIS4_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %4) #4
  store ptr %6, ptr %3, align 8
  %7 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPKPKN6Assimp3FBX13NodeAttributeESt6vectorIS5_SaIS5_EEEEbRKNS_17__normal_iteratorIT_T0_EESG_(ptr noundef nonnull align 8 dereferenceable(8) %2, ptr noundef nonnull align 8 dereferenceable(8) %3) #4
  br i1 %7, label %.lr.ph, label %.critedge

.lr.ph:                                           ; preds = %1, %.thread
  %8 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKPKN6Assimp3FBX13NodeAttributeESt6vectorIS5_SaIS5_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %2) #4
  %9 = load ptr, ptr %8, align 8, !tbaa !5
  %10 = icmp eq ptr %9, null
  br i1 %10, label %.thread, label %11

11:                                               ; preds = %.lr.ph
  %12 = call ptr @__dynamic_cast(ptr nonnull %9, ptr nonnull @_ZTIN6Assimp3FBX13NodeAttributeE, ptr nonnull @_ZTIN6Assimp3FBX4NullE, i64 0) #4
  %.not = icmp eq ptr %12, null
  br i1 %.not, label %.thread, label %15

.thread:                                          ; preds = %.lr.ph, %11
  %13 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPKPKN6Assimp3FBX13NodeAttributeESt6vectorIS5_SaIS5_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %2) #4
  %14 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPKPKN6Assimp3FBX13NodeAttributeESt6vectorIS5_SaIS5_EEEEbRKNS_17__normal_iteratorIT_T0_EESG_(ptr noundef nonnull align 8 dereferenceable(8) %2, ptr noundef nonnull align 8 dereferenceable(8) %3) #4
  br i1 %14, label %.lr.ph, label %.critedge

15:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #4
  br label %16

.critedge:                                        ; preds = %.thread, %1
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #4
  br label %16

16:                                               ; preds = %15, %.critedge
  %17 = phi i1 [ true, %15 ], [ false, %.critedge ]
  ret i1 %17
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNK6Assimp3FBX5Model13GetAttributesEv(ptr noundef nonnull align 8 dereferenceable(208)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIPKN6Assimp3FBX13NodeAttributeESaIS4_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIPKN6Assimp3FBX13NodeAttributeESaIS4_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPKPKN6Assimp3FBX13NodeAttributeESt6vectorIS5_SaIS5_EEEEbRKNS_17__normal_iteratorIT_T0_EESG_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKPKN6Assimp3FBX13NodeAttributeESt6vectorIS5_SaIS5_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPKPKN6Assimp3FBX13NodeAttributeESt6vectorIS5_SaIS5_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress nofree nounwind willreturn memory(read) }
attributes #2 = { 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 #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 }

!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"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass