; LLVM IR from nbdd0121/GenerationalGC :: Heap.ll (ZN6norlit2gc4Heap22Major_CleanLargeObjectEv)

; 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 }
%"class.norlit::gc::Object" = type <{ ptr, %union.anon, i8, i8, i8, [5 x i8] }>
%union.anon = type { %struct.anon }
%struct.anon = type { ptr, ptr }

@.str.13 = external hidden unnamed_addr constant [25 x i8], align 1

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN6norlit2gc4Heap24LargeObjectSpaceIteratorC2Ev(ptr noundef nonnull align 8 dereferenceable(16)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator7HasNextEv(ptr noundef nonnull align 8 dereferenceable(16)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator4NextEv(ptr noundef nonnull align 8 dereferenceable(16)) #1 align 2

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

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

declare i32 @printf(ptr noundef, ...) #3

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN6norlit2gc4Heap22Major_CleanLargeObjectEv() #2 align 2 {
  %1 = alloca %"class.norlit::gc::Heap::LargeObjectSpaceIterator", align 8
  %2 = alloca ptr, align 8
  call void @llvm.lifetime.start.p0(i64 16, ptr %1) #4
  call void @_ZN6norlit2gc4Heap24LargeObjectSpaceIteratorC2Ev(ptr noundef nonnull align 8 dereferenceable(16) %1)
  br label %3

3:                                                ; preds = %17, %0
  %4 = call noundef zeroext i1 @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator7HasNextEv(ptr noundef nonnull align 8 dereferenceable(16) %1)
  br i1 %4, label %5, label %18

5:                                                ; preds = %3
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #4
  %6 = call noundef ptr @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator4NextEv(ptr noundef nonnull align 8 dereferenceable(16) %1)
  store ptr %6, ptr %2, align 8, !tbaa !5
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = getelementptr inbounds %"class.norlit::gc::Object", ptr %7, i32 0, i32 3
  %9 = load i8, ptr %8, align 1, !tbaa !9
  %10 = icmp eq i8 %9, 2
  br i1 %10, label %11, label %14

11:                                               ; preds = %5
  %12 = load ptr, ptr %2, align 8, !tbaa !5
  %13 = getelementptr inbounds %"class.norlit::gc::Object", ptr %12, i32 0, i32 3
  store i8 0, ptr %13, align 1, !tbaa !9
  br label %17

14:                                               ; preds = %5
  %15 = load ptr, ptr %2, align 8, !tbaa !5
  %16 = call i32 (ptr, ...) @printf(ptr noundef @.str.13, ptr noundef %15)
  call void @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator6RemoveEv(ptr noundef nonnull align 8 dereferenceable(16) %1)
  br label %17

17:                                               ; preds = %14, %11
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #4
  br label %3, !llvm.loop !13

18:                                               ; preds = %3
  call void @llvm.lifetime.end.p0(i64 16, ptr %1) #4
  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 = { 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 = { "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, !12, i64 25}
!10 = !{!"_ZTSN6norlit2gc6ObjectE", !7, i64 8, !11, i64 24, !12, i64 25, !7, i64 26}
!11 = !{!"_ZTSN6norlit2gc5SpaceE", !7, i64 0}
!12 = !{!"_ZTSN6norlit2gc6StatusE", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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 }

@.str.13 = external hidden unnamed_addr constant [25 x i8], align 1

; 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 nounwind uwtable
declare dso_local void @_ZN6norlit2gc4Heap24LargeObjectSpaceIteratorC2Ev(ptr noundef nonnull align 8 dereferenceable(16)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator7HasNextEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator4NextEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #1 align 2

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

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

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN6norlit2gc4Heap22Major_CleanLargeObjectEv() local_unnamed_addr #2 align 2 {
  %1 = alloca %"class.norlit::gc::Heap::LargeObjectSpaceIterator", align 8
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %1) #4
  call void @_ZN6norlit2gc4Heap24LargeObjectSpaceIteratorC2Ev(ptr noundef nonnull align 8 dereferenceable(16) %1)
  %2 = call noundef zeroext i1 @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator7HasNextEv(ptr noundef nonnull align 8 dereferenceable(16) %1)
  br i1 %2, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %0, %10
  %3 = call noundef ptr @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator4NextEv(ptr noundef nonnull align 8 dereferenceable(16) %1)
  %4 = getelementptr inbounds i8, ptr %3, i64 25
  %5 = load i8, ptr %4, align 1, !tbaa !5
  %6 = icmp eq i8 %5, 2
  br i1 %6, label %7, label %8

7:                                                ; preds = %.lr.ph
  store i8 0, ptr %4, align 1, !tbaa !5
  br label %10

8:                                                ; preds = %.lr.ph
  %9 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.13, ptr noundef nonnull %3)
  call void @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator6RemoveEv(ptr noundef nonnull align 8 dereferenceable(16) %1)
  br label %10

10:                                               ; preds = %8, %7
  %11 = call noundef zeroext i1 @_ZN6norlit2gc4Heap24LargeObjectSpaceIterator7HasNextEv(ptr noundef nonnull align 8 dereferenceable(16) %1)
  br i1 %11, label %.lr.ph, label %._crit_edge, !llvm.loop !11

._crit_edge:                                      ; preds = %10, %0
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %1) #4
  ret void
}

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 = { 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 = { nofree 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 #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, !10, i64 25}
!6 = !{!"_ZTSN6norlit2gc6ObjectE", !7, i64 8, !9, i64 24, !10, i64 25, !7, i64 26}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!"_ZTSN6norlit2gc5SpaceE", !7, i64 0}
!10 = !{!"_ZTSN6norlit2gc6StatusE", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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