; LLVM IR from ThePhysicsGuys/Physics3D :: engine/layer/layerStack.ll (ZN3P3D6Engine10LayerStack7onCloseERNS0_8RegistryImEE)

; 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.std::reverse_iterator" = type { %"class.__gnu_cxx::__normal_iterator" }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }

; 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: mustprogress nounwind uwtable
declare dso_local void @_ZN3P3D6Engine10LayerStack6rbeginEv(ptr dead_on_unwind noalias writable sret(%"class.std::reverse_iterator") align 8, ptr noundef nonnull align 8 dereferenceable(28)) #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZStneIN9__gnu_cxx17__normal_iteratorIPPN3P3D6Engine5LayerESt6vectorIS5_SaIS5_EEEEEbRKSt16reverse_iteratorIT_ESF_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN3P3D6Engine10LayerStack4rendEv(ptr dead_on_unwind noalias writable sret(%"class.std::reverse_iterator") align 8, ptr noundef nonnull align 8 dereferenceable(28)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPPN3P3D6Engine5LayerESt6vectorIS5_SaIS5_EEEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPPN3P3D6Engine5LayerESt6vectorIS5_SaIS5_EEEEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN3P3D6Engine10LayerStack7onCloseERNS0_8RegistryImEE(ptr noundef nonnull align 8 dereferenceable(28) %0, ptr noundef nonnull align 1 %1) #3 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca %"class.std::reverse_iterator", align 8
  %6 = alloca %"class.std::reverse_iterator", align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %7 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  call void @_ZN3P3D6Engine10LayerStack6rbeginEv(ptr dead_on_unwind writable sret(%"class.std::reverse_iterator") align 8 %5, ptr noundef nonnull align 8 dereferenceable(28) %7)
  br label %8

8:                                                ; preds = %18, %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  call void @_ZN3P3D6Engine10LayerStack4rendEv(ptr dead_on_unwind writable sret(%"class.std::reverse_iterator") align 8 %6, ptr noundef nonnull align 8 dereferenceable(28) %7)
  %9 = call noundef zeroext i1 @_ZStneIN9__gnu_cxx17__normal_iteratorIPPN3P3D6Engine5LayerESt6vectorIS5_SaIS5_EEEEEbRKSt16reverse_iteratorIT_ESF_(ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull align 8 dereferenceable(8) %6)
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  br i1 %9, label %11, label %10

10:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  br label %20

11:                                               ; preds = %8
  %12 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPPN3P3D6Engine5LayerESt6vectorIS5_SaIS5_EEEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %5)
  %13 = load ptr, ptr %12, align 8, !tbaa !5
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = load ptr, ptr %13, align 8, !tbaa !9
  %16 = getelementptr inbounds ptr, ptr %15, i64 6
  %17 = load ptr, ptr %16, align 8
  call void %17(ptr noundef nonnull align 8 dereferenceable(49) %13, ptr noundef nonnull align 1 %14)
  br label %18

18:                                               ; preds = %11
  %19 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPPN3P3D6Engine5LayerESt6vectorIS5_SaIS5_EEEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %5)
  br label %8, !llvm.loop !11

20:                                               ; preds = %10
  ret void
}

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

!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 = !{!"vtable pointer", !8, 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"

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

; 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 nounwind uwtable
declare dso_local void @_ZN3P3D6Engine10LayerStack6rbeginEv(ptr dead_on_unwind noalias writable sret(%"class.std::reverse_iterator") align 8, ptr noundef nonnull align 8 dereferenceable(28)) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZStneIN9__gnu_cxx17__normal_iteratorIPPN3P3D6Engine5LayerESt6vectorIS5_SaIS5_EEEEEbRKSt16reverse_iteratorIT_ESF_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN3P3D6Engine10LayerStack4rendEv(ptr dead_on_unwind noalias writable sret(%"class.std::reverse_iterator") align 8, ptr noundef nonnull align 8 dereferenceable(28)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPPN3P3D6Engine5LayerESt6vectorIS5_SaIS5_EEEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPPN3P3D6Engine5LayerESt6vectorIS5_SaIS5_EEEEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN3P3D6Engine10LayerStack7onCloseERNS0_8RegistryImEE(ptr noundef nonnull align 8 dereferenceable(28) %0, ptr noundef nonnull align 1 %1) local_unnamed_addr #3 align 2 {
  %3 = alloca %"class.std::reverse_iterator", align 8
  %4 = alloca %"class.std::reverse_iterator", align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  call void @_ZN3P3D6Engine10LayerStack6rbeginEv(ptr dead_on_unwind nonnull writable sret(%"class.std::reverse_iterator") align 8 %3, ptr noundef nonnull align 8 dereferenceable(28) %0)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  call void @_ZN3P3D6Engine10LayerStack4rendEv(ptr dead_on_unwind nonnull writable sret(%"class.std::reverse_iterator") align 8 %4, ptr noundef nonnull align 8 dereferenceable(28) %0)
  %5 = call noundef zeroext i1 @_ZStneIN9__gnu_cxx17__normal_iteratorIPPN3P3D6Engine5LayerESt6vectorIS5_SaIS5_EEEEEbRKSt16reverse_iteratorIT_ESF_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  br i1 %5, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %2
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  ret void

.lr.ph:                                           ; preds = %2, %.lr.ph
  %6 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPPN3P3D6Engine5LayerESt6vectorIS5_SaIS5_EEEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %3)
  %7 = load ptr, ptr %6, align 8, !tbaa !5
  %8 = load ptr, ptr %7, align 8, !tbaa !9
  %9 = getelementptr inbounds i8, ptr %8, i64 48
  %10 = load ptr, ptr %9, align 8
  call void %10(ptr noundef nonnull align 8 dereferenceable(49) %7, ptr noundef nonnull align 1 %1)
  %11 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt16reverse_iteratorIN9__gnu_cxx17__normal_iteratorIPPN3P3D6Engine5LayerESt6vectorIS5_SaIS5_EEEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %3)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  call void @_ZN3P3D6Engine10LayerStack4rendEv(ptr dead_on_unwind nonnull writable sret(%"class.std::reverse_iterator") align 8 %4, ptr noundef nonnull align 8 dereferenceable(28) %0)
  %12 = call noundef zeroext i1 @_ZStneIN9__gnu_cxx17__normal_iteratorIPPN3P3D6Engine5LayerESt6vectorIS5_SaIS5_EEEEEbRKSt16reverse_iteratorIT_ESF_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  br i1 %12, label %.lr.ph, label %._crit_edge, !llvm.loop !11
}

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

!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 = !{!"vtable pointer", !8, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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