; LLVM IR from nbdd0121/GenerationalGC :: Heap.ll (ZN6norlit2gc4Heap13GlobalDestroyEv)

; 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.norlit::gc::Heap::LargeObjectSpaceIterator" = type { ptr, ptr }

@_ZN6norlit2gc4Heap10eden_spaceE = external dso_local global ptr, align 8
@_ZN6norlit2gc4Heap19survivor_from_spaceE = external dso_local global ptr, align 8
@_ZN6norlit2gc4Heap17survivor_to_spaceE = external dso_local global ptr, align 8
@_ZN6norlit2gc4Heap13tenured_spaceE = external dso_local global ptr, align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN6norlit2gc4Heap13GlobalDestroyEv() #0 align 2 {
  %1 = alloca %"class.norlit::gc::Heap::LargeObjectSpaceIterator", align 8
  %2 = load ptr, ptr @_ZN6norlit2gc4Heap10eden_spaceE, align 8, !tbaa !5
  call void @_ZN6norlit2gc11MemorySpace7DestroyEv(ptr noundef nonnull align 8 dereferenceable(40) %2)
  %3 = load ptr, ptr @_ZN6norlit2gc4Heap19survivor_from_spaceE, align 8, !tbaa !5
  call void @_ZN6norlit2gc11MemorySpace7DestroyEv(ptr noundef nonnull align 8 dereferenceable(40) %3)
  %4 = load ptr, ptr @_ZN6norlit2gc4Heap17survivor_to_spaceE, align 8, !tbaa !5
  call void @_ZN6norlit2gc11MemorySpace7DestroyEv(ptr noundef nonnull align 8 dereferenceable(40) %4)
  %5 = load ptr, ptr @_ZN6norlit2gc4Heap13tenured_spaceE, align 8, !tbaa !5
  call void @_ZN6norlit2gc11MemorySpace7DestroyEv(ptr noundef nonnull align 8 dereferenceable(40) %5)
  call void @llvm.lifetime.start.p0(i64 16, ptr %1) #4
  call void @_ZN6norlit2gc4Heap24LargeObjectSpaceIteratorC2Ev(ptr noundef nonnull align 8 dereferenceable(16) %1)
  br label %6

6:                                                ; preds = %8, %0
  %7 = call noundef zeroext i1 @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator7HasNextEv(ptr noundef nonnull align 8 dereferenceable(16) %1)
  br i1 %7, label %8, label %10

8:                                                ; preds = %6
  %9 = call noundef ptr @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator4NextEv(ptr noundef nonnull align 8 dereferenceable(16) %1)
  call void @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator6RemoveEv(ptr noundef nonnull align 8 dereferenceable(16) %1)
  br label %6, !llvm.loop !9

10:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 16, ptr %1) #4
  ret void
}

declare void @_ZN6norlit2gc11MemorySpace7DestroyEv(ptr noundef nonnull align 8 dereferenceable(40)) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN6norlit2gc4Heap24LargeObjectSpaceIteratorC2Ev(ptr noundef nonnull align 8 dereferenceable(16)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator7HasNextEv(ptr noundef nonnull align 8 dereferenceable(16)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator4NextEv(ptr noundef nonnull align 8 dereferenceable(16)) #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator6RemoveEv(ptr noundef nonnull align 8 dereferenceable(16)) #0 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

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

%"class.norlit::gc::Heap::LargeObjectSpaceIterator" = type { ptr, ptr }

@_ZN6norlit2gc4Heap10eden_spaceE = external dso_local local_unnamed_addr global ptr, align 8
@_ZN6norlit2gc4Heap19survivor_from_spaceE = external dso_local local_unnamed_addr global ptr, align 8
@_ZN6norlit2gc4Heap17survivor_to_spaceE = external dso_local local_unnamed_addr global ptr, align 8
@_ZN6norlit2gc4Heap13tenured_spaceE = external dso_local local_unnamed_addr global ptr, align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN6norlit2gc4Heap13GlobalDestroyEv() local_unnamed_addr #0 align 2 {
  %1 = alloca %"class.norlit::gc::Heap::LargeObjectSpaceIterator", align 8
  %2 = load ptr, ptr @_ZN6norlit2gc4Heap10eden_spaceE, align 8, !tbaa !5
  tail call void @_ZN6norlit2gc11MemorySpace7DestroyEv(ptr noundef nonnull align 8 dereferenceable(40) %2)
  %3 = load ptr, ptr @_ZN6norlit2gc4Heap19survivor_from_spaceE, align 8, !tbaa !5
  tail call void @_ZN6norlit2gc11MemorySpace7DestroyEv(ptr noundef nonnull align 8 dereferenceable(40) %3)
  %4 = load ptr, ptr @_ZN6norlit2gc4Heap17survivor_to_spaceE, align 8, !tbaa !5
  tail call void @_ZN6norlit2gc11MemorySpace7DestroyEv(ptr noundef nonnull align 8 dereferenceable(40) %4)
  %5 = load ptr, ptr @_ZN6norlit2gc4Heap13tenured_spaceE, align 8, !tbaa !5
  tail call void @_ZN6norlit2gc11MemorySpace7DestroyEv(ptr noundef nonnull align 8 dereferenceable(40) %5)
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %1) #4
  call void @_ZN6norlit2gc4Heap24LargeObjectSpaceIteratorC2Ev(ptr noundef nonnull align 8 dereferenceable(16) %1)
  %6 = call noundef zeroext i1 @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator7HasNextEv(ptr noundef nonnull align 8 dereferenceable(16) %1)
  br i1 %6, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %7 = call noundef ptr @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator4NextEv(ptr noundef nonnull align 8 dereferenceable(16) %1)
  call void @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator6RemoveEv(ptr noundef nonnull align 8 dereferenceable(16) %1)
  %8 = call noundef zeroext i1 @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator7HasNextEv(ptr noundef nonnull align 8 dereferenceable(16) %1)
  br i1 %8, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %0
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %1) #4
  ret void
}

declare void @_ZN6norlit2gc11MemorySpace7DestroyEv(ptr noundef nonnull align 8 dereferenceable(40)) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN6norlit2gc4Heap24LargeObjectSpaceIteratorC2Ev(ptr noundef nonnull align 8 dereferenceable(16)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator7HasNextEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator4NextEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator6RemoveEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

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


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