; LLVM IR from turi-code/SFrame :: oss_src/fileio/oss_webstor/sysutils.ll (ZN7webstor8internal9EventSync3setEv)

; 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"

%"struct.std::_Rb_tree_const_iterator" = type { ptr }
%"class.webstor::internal::EventSync" = type <{ %union.pthread_mutex_t, %"class.std::set", i32, [4 x i8] }>
%union.pthread_mutex_t = type { %struct.__pthread_mutex_s }
%struct.__pthread_mutex_s = type { i32, i32, i32, i32, i32, i16, i16, %struct.__pthread_internal_list }
%struct.__pthread_internal_list = type { ptr, ptr }
%"class.std::set" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<webstor::internal::EventWaiter *, webstor::internal::EventWaiter *, std::_Identity<webstor::internal::EventWaiter *>, std::less<webstor::internal::EventWaiter *>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<webstor::internal::EventWaiter *, webstor::internal::EventWaiter *, std::_Identity<webstor::internal::EventWaiter *>, std::less<webstor::internal::EventWaiter *>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::_Rb_tree_header" = type { %"struct.std::_Rb_tree_node_base", i64 }
%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }
%"class.webstor::internal::EventWaiter" = type { %union.pthread_mutex_t, %union.pthread_cond_t }
%union.pthread_cond_t = type { %struct.__pthread_cond_s }
%struct.__pthread_cond_s = type { %union.__atomic_wide_counter, %union.__atomic_wide_counter, [2 x i32], [2 x i32], i32, i32, [2 x i32] }
%union.__atomic_wide_counter = type { i64 }

; 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 nounwind uwtable
define dso_local void @_ZN7webstor8internal9EventSync3setEv(ptr noundef nonnull align 8 dereferenceable(92) %0) #1 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %4 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %5 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %6 = load ptr, ptr %2, align 8
  %7 = getelementptr inbounds %"class.webstor::internal::EventSync", ptr %6, i32 0, i32 0
  %8 = call i32 @pthread_mutex_lock(ptr noundef %7) #3
  %9 = getelementptr inbounds %"class.webstor::internal::EventSync", ptr %6, i32 0, i32 2
  store i32 1, ptr %9, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %10 = getelementptr inbounds %"class.webstor::internal::EventSync", ptr %6, i32 0, i32 1
  %11 = call ptr @_ZNKSt3setIPN7webstor8internal11EventWaiterESt4lessIS3_ESaIS3_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %10) #3
  %12 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %3, i32 0, i32 0
  store ptr %11, ptr %12, align 8
  br label %13

13:                                               ; preds = %18, %1
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %14 = getelementptr inbounds %"class.webstor::internal::EventSync", ptr %6, i32 0, i32 1
  %15 = call ptr @_ZNKSt3setIPN7webstor8internal11EventWaiterESt4lessIS3_ESaIS3_EE3endEv(ptr noundef nonnull align 8 dereferenceable(48) %14) #3
  %16 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %4, i32 0, i32 0
  store ptr %15, ptr %16, align 8
  %17 = call noundef zeroext i1 @_ZStneRKSt23_Rb_tree_const_iteratorIPN7webstor8internal11EventWaiterEES6_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  br i1 %17, label %18, label %31

18:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %19 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIPN7webstor8internal11EventWaiterEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #3
  %20 = load ptr, ptr %19, align 8, !tbaa !5
  store ptr %20, ptr %5, align 8, !tbaa !5
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = getelementptr inbounds %"class.webstor::internal::EventWaiter", ptr %21, i32 0, i32 0
  %23 = call i32 @pthread_mutex_lock(ptr noundef %22) #3
  %24 = load ptr, ptr %5, align 8, !tbaa !5
  %25 = getelementptr inbounds %"class.webstor::internal::EventWaiter", ptr %24, i32 0, i32 1
  %26 = call i32 @pthread_cond_signal(ptr noundef %25) #3
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  %28 = getelementptr inbounds %"class.webstor::internal::EventWaiter", ptr %27, i32 0, i32 0
  %29 = call i32 @pthread_mutex_unlock(ptr noundef %28) #3
  %30 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt23_Rb_tree_const_iteratorIPN7webstor8internal11EventWaiterEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  br label %13, !llvm.loop !21

31:                                               ; preds = %13
  %32 = getelementptr inbounds %"class.webstor::internal::EventSync", ptr %6, i32 0, i32 0
  %33 = call i32 @pthread_mutex_unlock(ptr noundef %32) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  ret void
}

; Function Attrs: nounwind
declare i32 @pthread_mutex_lock(ptr noundef) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt3setIPN7webstor8internal11EventWaiterESt4lessIS3_ESaIS3_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(48)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZStneRKSt23_Rb_tree_const_iteratorIPN7webstor8internal11EventWaiterEES6_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt3setIPN7webstor8internal11EventWaiterESt4lessIS3_ESaIS3_EE3endEv(ptr noundef nonnull align 8 dereferenceable(48)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIPN7webstor8internal11EventWaiterEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

; Function Attrs: nounwind
declare i32 @pthread_cond_signal(ptr noundef) #2

; Function Attrs: nounwind
declare i32 @pthread_mutex_unlock(ptr noundef) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt23_Rb_tree_const_iteratorIPN7webstor8internal11EventWaiterEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

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 = { 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 = { 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, !20, i64 88}
!10 = !{!"_ZTSN7webstor8internal9EventSyncE", !7, i64 0, !11, i64 40, !20, i64 88}
!11 = !{!"_ZTSSt3setIPN7webstor8internal11EventWaiterESt4lessIS3_ESaIS3_EE", !12, i64 0}
!12 = !{!"_ZTSSt8_Rb_treeIPN7webstor8internal11EventWaiterES3_St9_IdentityIS3_ESt4lessIS3_ESaIS3_EE", !13, i64 0}
!13 = !{!"_ZTSNSt8_Rb_treeIPN7webstor8internal11EventWaiterES3_St9_IdentityIS3_ESt4lessIS3_ESaIS3_EE13_Rb_tree_implIS7_Lb1EEE", !14, i64 0, !16, i64 8}
!14 = !{!"_ZTSSt20_Rb_tree_key_compareISt4lessIPN7webstor8internal11EventWaiterEEE", !15, i64 0}
!15 = !{!"_ZTSSt4lessIPN7webstor8internal11EventWaiterEE"}
!16 = !{!"_ZTSSt15_Rb_tree_header", !17, i64 0, !19, i64 32}
!17 = !{!"_ZTSSt18_Rb_tree_node_base", !18, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}
!18 = !{!"_ZTSSt14_Rb_tree_color", !7, i64 0}
!19 = !{!"long", !7, i64 0}
!20 = !{!"int", !7, i64 0}
!21 = distinct !{!21, !22}
!22 = !{!"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"

%"struct.std::_Rb_tree_const_iterator" = type { ptr }

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

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN7webstor8internal9EventSync3setEv(ptr noundef nonnull align 8 dereferenceable(92) %0) local_unnamed_addr #1 align 2 {
  %2 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %3 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %4 = tail call i32 @pthread_mutex_lock(ptr noundef nonnull %0) #3
  %5 = getelementptr inbounds i8, ptr %0, i64 88
  store i32 1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  %6 = getelementptr inbounds i8, ptr %0, i64 40
  %7 = tail call ptr @_ZNKSt3setIPN7webstor8internal11EventWaiterESt4lessIS3_ESaIS3_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %6) #3
  store ptr %7, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %8 = tail call ptr @_ZNKSt3setIPN7webstor8internal11EventWaiterESt4lessIS3_ESaIS3_EE3endEv(ptr noundef nonnull align 8 dereferenceable(48) %6) #3
  store ptr %8, ptr %3, align 8
  %9 = call noundef zeroext i1 @_ZStneRKSt23_Rb_tree_const_iteratorIPN7webstor8internal11EventWaiterEES6_(ptr noundef nonnull align 8 dereferenceable(8) %2, ptr noundef nonnull align 8 dereferenceable(8) %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  br i1 %9, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1, %.lr.ph
  %10 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIPN7webstor8internal11EventWaiterEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %2) #3
  %11 = load ptr, ptr %10, align 8, !tbaa !20
  %12 = call i32 @pthread_mutex_lock(ptr noundef %11) #3
  %13 = getelementptr inbounds i8, ptr %11, i64 40
  %14 = call i32 @pthread_cond_signal(ptr noundef nonnull %13) #3
  %15 = call i32 @pthread_mutex_unlock(ptr noundef %11) #3
  %16 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt23_Rb_tree_const_iteratorIPN7webstor8internal11EventWaiterEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %2) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %17 = call ptr @_ZNKSt3setIPN7webstor8internal11EventWaiterESt4lessIS3_ESaIS3_EE3endEv(ptr noundef nonnull align 8 dereferenceable(48) %6) #3
  store ptr %17, ptr %3, align 8
  %18 = call noundef zeroext i1 @_ZStneRKSt23_Rb_tree_const_iteratorIPN7webstor8internal11EventWaiterEES6_(ptr noundef nonnull align 8 dereferenceable(8) %2, ptr noundef nonnull align 8 dereferenceable(8) %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  br i1 %18, label %.lr.ph, label %._crit_edge, !llvm.loop !21

._crit_edge:                                      ; preds = %.lr.ph, %1
  %19 = call i32 @pthread_mutex_unlock(ptr noundef nonnull %0) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  ret void
}

; Function Attrs: nounwind
declare i32 @pthread_mutex_lock(ptr noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt3setIPN7webstor8internal11EventWaiterESt4lessIS3_ESaIS3_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZStneRKSt23_Rb_tree_const_iteratorIPN7webstor8internal11EventWaiterEES6_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt3setIPN7webstor8internal11EventWaiterESt4lessIS3_ESaIS3_EE3endEv(ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIPN7webstor8internal11EventWaiterEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: nounwind
declare i32 @pthread_cond_signal(ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind
declare i32 @pthread_mutex_unlock(ptr noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt23_Rb_tree_const_iteratorIPN7webstor8internal11EventWaiterEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

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 = { 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 = { 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, !19, i64 88}
!6 = !{!"_ZTSN7webstor8internal9EventSyncE", !7, i64 0, !9, i64 40, !19, i64 88}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!"_ZTSSt3setIPN7webstor8internal11EventWaiterESt4lessIS3_ESaIS3_EE", !10, i64 0}
!10 = !{!"_ZTSSt8_Rb_treeIPN7webstor8internal11EventWaiterES3_St9_IdentityIS3_ESt4lessIS3_ESaIS3_EE", !11, i64 0}
!11 = !{!"_ZTSNSt8_Rb_treeIPN7webstor8internal11EventWaiterES3_St9_IdentityIS3_ESt4lessIS3_ESaIS3_EE13_Rb_tree_implIS7_Lb1EEE", !12, i64 0, !14, i64 8}
!12 = !{!"_ZTSSt20_Rb_tree_key_compareISt4lessIPN7webstor8internal11EventWaiterEEE", !13, i64 0}
!13 = !{!"_ZTSSt4lessIPN7webstor8internal11EventWaiterEE"}
!14 = !{!"_ZTSSt15_Rb_tree_header", !15, i64 0, !18, i64 32}
!15 = !{!"_ZTSSt18_Rb_tree_node_base", !16, i64 0, !17, i64 8, !17, i64 16, !17, i64 24}
!16 = !{!"_ZTSSt14_Rb_tree_color", !7, i64 0}
!17 = !{!"any pointer", !7, i64 0}
!18 = !{!"long", !7, i64 0}
!19 = !{!"int", !7, i64 0}
!20 = !{!17, !17, i64 0}
!21 = distinct !{!21, !22}
!22 = !{!"llvm.loop.mustprogress"}


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