; LLVM IR from NVIDIA/DALI :: dali/core/cuda_event_pool.ll (ZN4dali13CUDAEventPool5PurgeEv)

; 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::lock_guard" = type { ptr }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%"class.dali::CUDAEventPool" = type <{ i32, [4 x i8], ptr, %"class.std::vector", %"class.dali::yielding_spinlock", [7 x i8] }>
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<dali::CUDAEventPool::EventEntry *, std::allocator<dali::CUDAEventPool::EventEntry *>>::_Vector_impl" }
%"struct.std::_Vector_base<dali::CUDAEventPool::EventEntry *, std::allocator<dali::CUDAEventPool::EventEntry *>>::_Vector_impl" = type { %"struct.std::_Vector_base<dali::CUDAEventPool::EventEntry *, std::allocator<dali::CUDAEventPool::EventEntry *>>::_Vector_impl_data" }
%"struct.std::_Vector_base<dali::CUDAEventPool::EventEntry *, std::allocator<dali::CUDAEventPool::EventEntry *>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.dali::yielding_spinlock" = type { %"struct.std::atomic_flag" }
%"struct.std::atomic_flag" = type { %"struct.std::__atomic_flag_base" }
%"struct.std::__atomic_flag_base" = type { i8 }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN4dali13CUDAEventPool5PurgeEv(ptr noundef nonnull align 8 dereferenceable(41) %0) #0 align 2 personality ptr @__gxx_personality_v0 {
  %2 = alloca ptr, align 8
  %3 = alloca %"class.std::lock_guard", align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %8 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %9 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %10 = load ptr, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  %11 = getelementptr inbounds %"class.dali::CUDAEventPool", ptr %10, i32 0, i32 4
  call void @_ZNSt10lock_guardIN4dali17yielding_spinlockILi100EEEEC2ERS2_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 1 dereferenceable(1) %11)
  %12 = getelementptr inbounds %"class.dali::CUDAEventPool", ptr %10, i32 0, i32 2
  invoke void @_ZN4dali13CUDAEventPool10DeleteListERPNS0_10EventEntryE(ptr noundef nonnull align 8 dereferenceable(41) %10, ptr noundef nonnull align 8 dereferenceable(8) %12)
          to label %13 unwind label %24

13:                                               ; preds = %1
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %14 = getelementptr inbounds %"class.dali::CUDAEventPool", ptr %10, i32 0, i32 3
  store ptr %14, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  %16 = call ptr @_ZNSt6vectorIPN4dali13CUDAEventPool10EventEntryESaIS3_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %15) #4
  %17 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %7, i32 0, i32 0
  store ptr %16, ptr %17, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  %18 = load ptr, ptr %6, align 8, !tbaa !5
  %19 = call ptr @_ZNSt6vectorIPN4dali13CUDAEventPool10EventEntryESaIS3_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %18) #4
  %20 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %8, i32 0, i32 0
  store ptr %19, ptr %20, align 8
  br label %21

21:                                               ; preds = %32, %13
  %22 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPPN4dali13CUDAEventPool10EventEntryESt6vectorIS4_SaIS4_EEEEbRKNS_17__normal_iteratorIT_T0_EESE_(ptr noundef nonnull align 8 dereferenceable(8) %7, ptr noundef nonnull align 8 dereferenceable(8) %8) #4
  br i1 %22, label %28, label %23

23:                                               ; preds = %21
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  br label %38

24:                                               ; preds = %1
  %25 = landingpad { ptr, i32 }
          cleanup
  %26 = extractvalue { ptr, i32 } %25, 0
  store ptr %26, ptr %4, align 8
  %27 = extractvalue { ptr, i32 } %25, 1
  store i32 %27, ptr %5, align 4
  br label %39

28:                                               ; preds = %21
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #4
  %29 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPPN4dali13CUDAEventPool10EventEntryESt6vectorIS4_SaIS4_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %7) #4
  store ptr %29, ptr %9, align 8, !tbaa !5
  %30 = load ptr, ptr %9, align 8, !tbaa !5
  invoke void @_ZN4dali13CUDAEventPool10DeleteListERPNS0_10EventEntryE(ptr noundef nonnull align 8 dereferenceable(41) %10, ptr noundef nonnull align 8 dereferenceable(8) %30)
          to label %31 unwind label %34

31:                                               ; preds = %28
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #4
  br label %32

32:                                               ; preds = %31
  %33 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPPN4dali13CUDAEventPool10EventEntryESt6vectorIS4_SaIS4_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %7) #4
  br label %21

34:                                               ; preds = %28
  %35 = landingpad { ptr, i32 }
          cleanup
  %36 = extractvalue { ptr, i32 } %35, 0
  store ptr %36, ptr %4, align 8
  %37 = extractvalue { ptr, i32 } %35, 1
  store i32 %37, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  br label %39

38:                                               ; preds = %23
  call void @_ZNSt10lock_guardIN4dali17yielding_spinlockILi100EEEED2Ev(ptr noundef nonnull align 8 dereferenceable(8) %3) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  ret void

39:                                               ; preds = %34, %24
  call void @_ZNSt10lock_guardIN4dali17yielding_spinlockILi100EEEED2Ev(ptr noundef nonnull align 8 dereferenceable(8) %3) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  br label %40

40:                                               ; preds = %39
  %41 = load ptr, ptr %4, align 8
  %42 = load i32, ptr %5, align 4
  %43 = insertvalue { ptr, i32 } poison, ptr %41, 0
  %44 = insertvalue { ptr, i32 } %43, i32 %42, 1
  resume { ptr, i32 } %44
}

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt10lock_guardIN4dali17yielding_spinlockILi100EEEEC2ERS2_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN4dali13CUDAEventPool10DeleteListERPNS0_10EventEntryE(ptr noundef nonnull align 8 dereferenceable(41), ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIPN4dali13CUDAEventPool10EventEntryESaIS3_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIPN4dali13CUDAEventPool10EventEntryESaIS3_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPPN4dali13CUDAEventPool10EventEntryESt6vectorIS4_SaIS4_EEEEbRKNS_17__normal_iteratorIT_T0_EESE_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPPN4dali13CUDAEventPool10EventEntryESt6vectorIS4_SaIS4_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPPN4dali13CUDAEventPool10EventEntryESt6vectorIS4_SaIS4_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt10lock_guardIN4dali17yielding_spinlockILi100EEEED2Ev(ptr noundef nonnull align 8 dereferenceable(8)) unnamed_addr #2 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { inlinehint 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"}


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

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN4dali13CUDAEventPool5PurgeEv(ptr noundef nonnull align 8 dereferenceable(41) %0) local_unnamed_addr #0 align 2 personality ptr @__gxx_personality_v0 {
  %2 = alloca %"class.std::lock_guard", align 8
  %3 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %4 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  %5 = getelementptr inbounds i8, ptr %0, i64 40
  call void @_ZNSt10lock_guardIN4dali17yielding_spinlockILi100EEEEC2ERS2_(ptr noundef nonnull align 8 dereferenceable(8) %2, ptr noundef nonnull align 1 dereferenceable(1) %5)
  %6 = getelementptr inbounds i8, ptr %0, i64 8
  call void @_ZN4dali13CUDAEventPool10DeleteListERPNS0_10EventEntryE(ptr noundef nonnull align 8 dereferenceable(41) %0, ptr noundef nonnull align 8 dereferenceable(8) %6)
  %7 = getelementptr inbounds i8, ptr %0, i64 16
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %8 = call ptr @_ZNSt6vectorIPN4dali13CUDAEventPool10EventEntryESaIS3_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %7) #3
  store ptr %8, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  %9 = call ptr @_ZNSt6vectorIPN4dali13CUDAEventPool10EventEntryESaIS3_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %7) #3
  store ptr %9, ptr %4, align 8
  %10 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPPN4dali13CUDAEventPool10EventEntryESt6vectorIS4_SaIS4_EEEEbRKNS_17__normal_iteratorIT_T0_EESE_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  br i1 %10, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %1
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  call void @_ZNSt10lock_guardIN4dali17yielding_spinlockILi100EEEED2Ev(ptr noundef nonnull align 8 dereferenceable(8) %2) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  ret void

.lr.ph:                                           ; preds = %1, %.lr.ph
  %11 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPPN4dali13CUDAEventPool10EventEntryESt6vectorIS4_SaIS4_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #3
  call void @_ZN4dali13CUDAEventPool10DeleteListERPNS0_10EventEntryE(ptr noundef nonnull align 8 dereferenceable(41) %0, ptr noundef nonnull align 8 dereferenceable(8) %11)
  %12 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPPN4dali13CUDAEventPool10EventEntryESt6vectorIS4_SaIS4_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #3
  %13 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPPN4dali13CUDAEventPool10EventEntryESt6vectorIS4_SaIS4_EEEEbRKNS_17__normal_iteratorIT_T0_EESE_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  br i1 %13, label %.lr.ph, label %._crit_edge
}

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt10lock_guardIN4dali17yielding_spinlockILi100EEEEC2ERS2_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN4dali13CUDAEventPool10DeleteListERPNS0_10EventEntryE(ptr noundef nonnull align 8 dereferenceable(41), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIPN4dali13CUDAEventPool10EventEntryESaIS3_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIPN4dali13CUDAEventPool10EventEntryESaIS3_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPPN4dali13CUDAEventPool10EventEntryESt6vectorIS4_SaIS4_EEEEbRKNS_17__normal_iteratorIT_T0_EESE_(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 noundef nonnull align 8 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPPN4dali13CUDAEventPool10EventEntryESt6vectorIS4_SaIS4_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPPN4dali13CUDAEventPool10EventEntryESt6vectorIS4_SaIS4_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt10lock_guardIN4dali17yielding_spinlockILi100EEEED2Ev(ptr noundef nonnull align 8 dereferenceable(8)) unnamed_addr #0 align 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { inlinehint 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,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass