; LLVM IR from zchrissirhcz/pixel :: legacy/contrib/xadd/array_v9_system_api.ll (ZN5Array7releaseEv)

; 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.Array = type { ptr, i32, ptr }

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN5Array7releaseEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #0 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %5 = load ptr, ptr %2, align 8
  %6 = getelementptr inbounds %class.Array, ptr %5, i32 0, i32 2
  %7 = load ptr, ptr %6, align 8, !tbaa !9
  %8 = icmp ne ptr %7, null
  br i1 %8, label %9, label %26

9:                                                ; preds = %1
  %10 = getelementptr inbounds %class.Array, ptr %5, i32 0, i32 2
  %11 = load ptr, ptr %10, align 8, !tbaa !9
  store i32 -1, ptr %3, align 4, !tbaa !12
  %12 = load i32, ptr %3, align 4
  %13 = atomicrmw add ptr %11, i32 %12 acq_rel, align 4
  store i32 %13, ptr %4, align 4
  %14 = load i32, ptr %4, align 4, !tbaa !12
  %15 = icmp eq i32 %14, 1
  br i1 %15, label %16, label %26

16:                                               ; preds = %9
  %17 = getelementptr inbounds %class.Array, ptr %5, i32 0, i32 2
  %18 = load ptr, ptr %17, align 8, !tbaa !9
  %19 = icmp eq ptr %18, null
  br i1 %19, label %21, label %20

20:                                               ; preds = %16
  call void @_ZdlPvm(ptr noundef %18, i64 noundef 4) #3
  br label %21

21:                                               ; preds = %20, %16
  %22 = getelementptr inbounds %class.Array, ptr %5, i32 0, i32 2
  store ptr null, ptr %22, align 8, !tbaa !9
  %23 = getelementptr inbounds %class.Array, ptr %5, i32 0, i32 0
  %24 = load ptr, ptr %23, align 8, !tbaa !13
  call void @free(ptr noundef %24) #4
  %25 = getelementptr inbounds %class.Array, ptr %5, i32 0, i32 0
  store ptr null, ptr %25, align 8, !tbaa !13
  br label %26

26:                                               ; preds = %21, %9, %1
  ret void
}

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) #1

; Function Attrs: nounwind
declare void @free(ptr noundef) #2

attributes #0 = { 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 #1 = { nobuiltin 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 #2 = { 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 #3 = { builtin nounwind }
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, !6, i64 16}
!10 = !{!"_ZTS5Array", !6, i64 0, !11, i64 8, !6, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{!10, !6, i64 0}


; 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 nounwind uwtable
define dso_local void @_ZN5Array7releaseEv(ptr nocapture noundef nonnull align 8 dereferenceable(24) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 16
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %.not = icmp eq ptr %3, null
  br i1 %.not, label %13, label %4

4:                                                ; preds = %1
  %5 = atomicrmw add ptr %3, i32 -1 acq_rel, align 4
  %6 = icmp eq i32 %5, 1
  br i1 %6, label %7, label %13

7:                                                ; preds = %4
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = icmp eq ptr %8, null
  br i1 %9, label %11, label %10

10:                                               ; preds = %7
  tail call void @_ZdlPvm(ptr noundef nonnull %8, i64 noundef 4) #3
  br label %11

11:                                               ; preds = %10, %7
  store ptr null, ptr %2, align 8, !tbaa !5
  %12 = load ptr, ptr %0, align 8, !tbaa !11
  tail call void @free(ptr noundef %12) #4
  store ptr null, ptr %0, align 8, !tbaa !11
  br label %13

13:                                               ; preds = %11, %4, %1
  ret void
}

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #2

attributes #0 = { 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 #1 = { nobuiltin 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 #2 = { mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { builtin nounwind }
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, !7, i64 16}
!6 = !{!"_ZTS5Array", !7, i64 0, !10, i64 8, !7, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !7, i64 0}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,TailCallElimPass