; LLVM IR from glaretechnologies/substrata :: resonance-audio/resonance_audio/utils (lockless_task_queue)

; 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.vraudio::LocklessTaskQueue" = type { %"struct.std::atomic", %"struct.std::atomic", %"class.std::vector", %"class.std::vector.0" }
%"struct.std::atomic" = type { %"struct.std::__atomic_base" }
%"struct.std::__atomic_base" = type { i64 }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<vraudio::LocklessTaskQueue::Node, std::allocator<vraudio::LocklessTaskQueue::Node>>::_Vector_impl" }
%"struct.std::_Vector_base<vraudio::LocklessTaskQueue::Node, std::allocator<vraudio::LocklessTaskQueue::Node>>::_Vector_impl" = type { %"struct.std::_Vector_base<vraudio::LocklessTaskQueue::Node, std::allocator<vraudio::LocklessTaskQueue::Node>>::_Vector_impl_data" }
%"struct.std::_Vector_base<vraudio::LocklessTaskQueue::Node, std::allocator<vraudio::LocklessTaskQueue::Node>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<std::function<void ()>, std::allocator<std::function<void ()>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::function<void ()>, std::allocator<std::function<void ()>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::function<void ()>, std::allocator<std::function<void ()>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::function<void ()>, std::allocator<std::function<void ()>>>::_Vector_impl_data" = type { ptr, ptr, 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 uwtable
define dso_local void @_ZN7vraudio17LocklessTaskQueue5ClearEv(ptr noundef nonnull align 8 dereferenceable(64) %0) #1 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %5 = load ptr, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  %6 = getelementptr inbounds %"class.vraudio::LocklessTaskQueue", ptr %5, i32 0, i32 1
  %7 = call noundef i64 @_ZNKSt13__atomic_baseImEcvmEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #4
  %8 = call noundef i64 @_ZN7vraudio17LocklessTaskQueue7GetFlagEm(ptr noundef nonnull align 8 dereferenceable(64) %5, i64 noundef %7)
  %9 = shl i64 %8, 32
  %10 = add i64 %9, 4294967295
  store i64 %10, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #4
  %11 = getelementptr inbounds %"class.vraudio::LocklessTaskQueue", ptr %5, i32 0, i32 1
  %12 = load i64, ptr %3, align 8, !tbaa !9
  %13 = call noundef i64 @_ZNSt13__atomic_baseImE8exchangeEmSt12memory_order(ptr noundef nonnull align 8 dereferenceable(8) %11, i64 noundef %12, i32 noundef 5) #4
  store i64 %13, ptr %4, align 8, !tbaa !9
  %14 = load i64, ptr %4, align 8, !tbaa !9
  call void @_ZN7vraudio17LocklessTaskQueue15ProcessTaskListEmb(ptr noundef nonnull align 8 dereferenceable(64) %5, i64 noundef %14, i1 noundef zeroext false)
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZN7vraudio17LocklessTaskQueue7GetFlagEm(ptr noundef nonnull align 8 dereferenceable(64), i64 noundef) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt13__atomic_baseImEcvmEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: alwaysinline mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNSt13__atomic_baseImE8exchangeEmSt12memory_order(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef, i32 noundef) #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7vraudio17LocklessTaskQueue15ProcessTaskListEmb(ptr noundef nonnull align 8 dereferenceable(64), i64 noundef, i1 noundef zeroext) #1 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = { alwaysinline 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 = !{!10, !10, i64 0}
!10 = !{!"long", !7, 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 uwtable
define dso_local void @_ZN7vraudio17LocklessTaskQueue5ClearEv(ptr noundef nonnull align 8 dereferenceable(64) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = tail call noundef i64 @_ZNKSt13__atomic_baseImEcvmEv(ptr noundef nonnull align 8 dereferenceable(8) %2) #3
  %4 = tail call noundef i64 @_ZN7vraudio17LocklessTaskQueue7GetFlagEm(ptr noundef nonnull align 8 dereferenceable(64) %0, i64 noundef %3)
  %5 = shl i64 %4, 32
  %6 = or disjoint i64 %5, 4294967295
  %7 = tail call noundef i64 @_ZNSt13__atomic_baseImE8exchangeEmSt12memory_order(ptr noundef nonnull align 8 dereferenceable(8) %2, i64 noundef %6, i32 noundef 5) #3
  tail call void @_ZN7vraudio17LocklessTaskQueue15ProcessTaskListEmb(ptr noundef nonnull align 8 dereferenceable(64) %0, i64 noundef %7, i1 noundef zeroext false)
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZN7vraudio17LocklessTaskQueue7GetFlagEm(ptr noundef nonnull align 8 dereferenceable(64), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt13__atomic_baseImEcvmEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: alwaysinline mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNSt13__atomic_baseImE8exchangeEmSt12memory_order(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef, i32 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7vraudio17LocklessTaskQueue15ProcessTaskListEmb(ptr noundef nonnull align 8 dereferenceable(64), i64 noundef, i1 noundef zeroext) local_unnamed_addr #0 align 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 = { 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 = { alwaysinline 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 = { 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)"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,ReassociatePass,SROAPass,TailCallElimPass