; LLVM IR from turi-code/SFrame :: oss_src/rpc/dc_tcp_comm.ll (ZNK8graphlab7dc_impl11dc_tcp_comm16num_in_connectedEv)

; 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.graphlab::dc_impl::dc_tcp_comm" = type <{ %"class.graphlab::dc_impl::dc_comm_base", i16, i16, i8, [3 x i8], %"class.std::__cxx11::basic_string", %"class.std::vector.8", %"class.std::map", %"class.std::vector.16", %"class.std::vector", %"class.std::vector.0", %"class.graphlab::atomic", %"class.graphlab::mutex", %"class.graphlab::conditional", %"class.std::vector.21", %"class.graphlab::atomic", %"class.graphlab::atomic", %"class.graphlab::thread_group", ptr, %"class.graphlab::thread_group", ptr, ptr, ptr, %"struct.graphlab::dc_impl::dc_tcp_comm::timeout_event", %"struct.graphlab::dc_impl::dc_tcp_comm::timeout_event", %"class.graphlab::fixed_dense_bitset", i32, [4 x i8], %"class.graphlab::thread", i8, [7 x i8] }>
%"class.graphlab::dc_impl::dc_comm_base" = type { ptr }
%"class.std::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }
%"class.std::vector.8" = type { %"struct.std::_Vector_base.9" }
%"struct.std::_Vector_base.9" = type { %"struct.std::_Vector_base<unsigned int, std::allocator<unsigned int>>::_Vector_impl" }
%"struct.std::_Vector_base<unsigned int, std::allocator<unsigned int>>::_Vector_impl" = type { %"struct.std::_Vector_base<unsigned int, std::allocator<unsigned int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<unsigned int, std::allocator<unsigned int>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::map" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<unsigned int, std::pair<const unsigned int, unsigned short>, std::_Select1st<std::pair<const unsigned int, unsigned short>>, std::less<unsigned int>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<unsigned int, std::pair<const unsigned int, unsigned short>, std::_Select1st<std::pair<const unsigned int, unsigned short>>, std::less<unsigned int>>::_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.std::vector.16" = type { %"struct.std::_Vector_base.17" }
%"struct.std::_Vector_base.17" = type { %"struct.std::_Vector_base<unsigned short, std::allocator<unsigned short>>::_Vector_impl" }
%"struct.std::_Vector_base<unsigned short, std::allocator<unsigned short>>::_Vector_impl" = type { %"struct.std::_Vector_base<unsigned short, std::allocator<unsigned short>>::_Vector_impl_data" }
%"struct.std::_Vector_base<unsigned short, std::allocator<unsigned short>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<graphlab::dc_impl::dc_receive *, std::allocator<graphlab::dc_impl::dc_receive *>>::_Vector_impl" }
%"struct.std::_Vector_base<graphlab::dc_impl::dc_receive *, std::allocator<graphlab::dc_impl::dc_receive *>>::_Vector_impl" = type { %"struct.std::_Vector_base<graphlab::dc_impl::dc_receive *, std::allocator<graphlab::dc_impl::dc_receive *>>::_Vector_impl_data" }
%"struct.std::_Vector_base<graphlab::dc_impl::dc_receive *, std::allocator<graphlab::dc_impl::dc_receive *>>::_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<graphlab::dc_impl::dc_send *, std::allocator<graphlab::dc_impl::dc_send *>>::_Vector_impl" }
%"struct.std::_Vector_base<graphlab::dc_impl::dc_send *, std::allocator<graphlab::dc_impl::dc_send *>>::_Vector_impl" = type { %"struct.std::_Vector_base<graphlab::dc_impl::dc_send *, std::allocator<graphlab::dc_impl::dc_send *>>::_Vector_impl_data" }
%"struct.std::_Vector_base<graphlab::dc_impl::dc_send *, std::allocator<graphlab::dc_impl::dc_send *>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.graphlab::mutex" = type { %union.pthread_mutex_t }
%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.graphlab::conditional" = type { %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 }
%"class.std::vector.21" = type { %"struct.std::_Vector_base.22" }
%"struct.std::_Vector_base.22" = type { %"struct.std::_Vector_base<graphlab::dc_impl::dc_tcp_comm::socket_info, std::allocator<graphlab::dc_impl::dc_tcp_comm::socket_info>>::_Vector_impl" }
%"struct.std::_Vector_base<graphlab::dc_impl::dc_tcp_comm::socket_info, std::allocator<graphlab::dc_impl::dc_tcp_comm::socket_info>>::_Vector_impl" = type { %"struct.std::_Vector_base<graphlab::dc_impl::dc_tcp_comm::socket_info, std::allocator<graphlab::dc_impl::dc_tcp_comm::socket_info>>::_Vector_impl_data" }
%"struct.std::_Vector_base<graphlab::dc_impl::dc_tcp_comm::socket_info, std::allocator<graphlab::dc_impl::dc_tcp_comm::socket_info>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.graphlab::atomic" = type { %"class.graphlab::graphlab_impl::atomic_impl" }
%"class.graphlab::graphlab_impl::atomic_impl" = type { i64 }
%"class.graphlab::thread_group" = type { i64, i64, %"class.graphlab::mutex", %"class.graphlab::conditional", %"class.std::queue" }
%"class.std::queue" = type { %"class.std::deque" }
%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<std::pair<unsigned long, const char *>, std::allocator<std::pair<unsigned long, const char *>>>::_Deque_impl" }
%"struct.std::_Deque_base<std::pair<unsigned long, const char *>, std::allocator<std::pair<unsigned long, const char *>>>::_Deque_impl" = type { %"struct.std::_Deque_base<std::pair<unsigned long, const char *>, std::allocator<std::pair<unsigned long, const char *>>>::_Deque_impl_data" }
%"struct.std::_Deque_base<std::pair<unsigned long, const char *>, std::allocator<std::pair<unsigned long, const char *>>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }
%"struct.graphlab::dc_impl::dc_tcp_comm::timeout_event" = type { i8, ptr }
%"class.graphlab::fixed_dense_bitset" = type { [4 x i64] }
%"class.graphlab::thread" = type <{ i64, i64, i64, i8, [7 x i8] }>
%"struct.graphlab::dc_impl::dc_tcp_comm::socket_info" = type { i64, ptr, i32, i32, ptr, ptr, i8, %"class.graphlab::mutex", %"struct.graphlab::dc_impl::circular_iovec_buffer", %struct.msghdr }
%"struct.graphlab::dc_impl::circular_iovec_buffer" = type { %"class.std::vector.34", %"class.std::vector.34", i64, i64, i64 }
%"class.std::vector.34" = type { %"struct.std::_Vector_base.35" }
%"struct.std::_Vector_base.35" = type { %"struct.std::_Vector_base<iovec, std::allocator<iovec>>::_Vector_impl" }
%"struct.std::_Vector_base<iovec, std::allocator<iovec>>::_Vector_impl" = type { %"struct.std::_Vector_base<iovec, std::allocator<iovec>>::_Vector_impl_data" }
%"struct.std::_Vector_base<iovec, std::allocator<iovec>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%struct.msghdr = type { ptr, i32, ptr, i64, ptr, i64, i32 }

; 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 noundef i64 @_ZNK8graphlab7dc_impl11dc_tcp_comm16num_in_connectedEv(ptr noundef nonnull align 8 dereferenceable(833) %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) #2
  store i64 0, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #2
  store i64 0, ptr %4, align 8, !tbaa !9
  br label %6

6:                                                ; preds = %22, %1
  %7 = load i64, ptr %4, align 8, !tbaa !9
  %8 = getelementptr inbounds %"class.graphlab::dc_impl::dc_tcp_comm", ptr %5, i32 0, i32 14
  %9 = call noundef i64 @_ZNKSt6vectorIN8graphlab7dc_impl11dc_tcp_comm11socket_infoESaIS3_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %8) #2
  %10 = icmp ult i64 %7, %9
  br i1 %10, label %12, label %11

11:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #2
  br label %25

12:                                               ; preds = %6
  %13 = getelementptr inbounds %"class.graphlab::dc_impl::dc_tcp_comm", ptr %5, i32 0, i32 14
  %14 = load i64, ptr %4, align 8, !tbaa !9
  %15 = call noundef nonnull align 8 dereferenceable(216) ptr @_ZNKSt6vectorIN8graphlab7dc_impl11dc_tcp_comm11socket_infoESaIS3_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %13, i64 noundef %14) #2
  %16 = getelementptr inbounds %"struct.graphlab::dc_impl::dc_tcp_comm::socket_info", ptr %15, i32 0, i32 3
  %17 = load i32, ptr %16, align 4, !tbaa !11
  %18 = icmp ne i32 %17, -1
  %19 = zext i1 %18 to i64
  %20 = load i64, ptr %3, align 8, !tbaa !9
  %21 = add i64 %20, %19
  store i64 %21, ptr %3, align 8, !tbaa !9
  br label %22

22:                                               ; preds = %12
  %23 = load i64, ptr %4, align 8, !tbaa !9
  %24 = add i64 %23, 1
  store i64 %24, ptr %4, align 8, !tbaa !9
  br label %6, !llvm.loop !22

25:                                               ; preds = %11
  %26 = load i64, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  ret i64 %26
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIN8graphlab7dc_impl11dc_tcp_comm11socket_infoESaIS3_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(216) ptr @_ZNKSt6vectorIN8graphlab7dc_impl11dc_tcp_comm11socket_infoESaIS3_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #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 }

!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}
!11 = !{!12, !13, i64 20}
!12 = !{!"_ZTSN8graphlab7dc_impl11dc_tcp_comm11socket_infoE", !10, i64 0, !6, i64 8, !13, i64 16, !13, i64 20, !6, i64 24, !6, i64 32, !14, i64 40, !15, i64 48, !16, i64 88, !21, i64 160}
!13 = !{!"int", !7, i64 0}
!14 = !{!"bool", !7, i64 0}
!15 = !{!"_ZTSN8graphlab5mutexE", !7, i64 0}
!16 = !{!"_ZTSN8graphlab7dc_impl21circular_iovec_bufferE", !17, i64 0, !17, i64 24, !10, i64 48, !10, i64 56, !10, i64 64}
!17 = !{!"_ZTSSt6vectorI5iovecSaIS0_EE", !18, i64 0}
!18 = !{!"_ZTSSt12_Vector_baseI5iovecSaIS0_EE", !19, i64 0}
!19 = !{!"_ZTSNSt12_Vector_baseI5iovecSaIS0_EE12_Vector_implE", !20, i64 0}
!20 = !{!"_ZTSNSt12_Vector_baseI5iovecSaIS0_EE17_Vector_impl_dataE", !6, i64 0, !6, i64 8, !6, i64 16}
!21 = !{!"_ZTS6msghdr", !6, i64 0, !13, i64 8, !6, i64 16, !10, i64 24, !6, i64 32, !10, i64 40, !13, i64 48}
!22 = distinct !{!22, !23}
!23 = !{!"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"

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_ZNK8graphlab7dc_impl11dc_tcp_comm16num_in_connectedEv(ptr noundef nonnull align 8 dereferenceable(833) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 288
  %3 = tail call noundef i64 @_ZNKSt6vectorIN8graphlab7dc_impl11dc_tcp_comm11socket_infoESaIS3_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #1
  %.not = icmp eq i64 %3, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %1
  %.05.lcssa = phi i64 [ 0, %1 ], [ %9, %.lr.ph ]
  ret i64 %.05.lcssa

.lr.ph:                                           ; preds = %1, %.lr.ph
  %.07 = phi i64 [ %10, %.lr.ph ], [ 0, %1 ]
  %.056 = phi i64 [ %9, %.lr.ph ], [ 0, %1 ]
  %4 = tail call noundef nonnull align 8 dereferenceable(216) ptr @_ZNKSt6vectorIN8graphlab7dc_impl11dc_tcp_comm11socket_infoESaIS3_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %.07) #1
  %5 = getelementptr inbounds i8, ptr %4, i64 20
  %6 = load i32, ptr %5, align 4, !tbaa !5
  %7 = icmp ne i32 %6, -1
  %8 = zext i1 %7 to i64
  %9 = add i64 %.056, %8
  %10 = add nuw i64 %.07, 1
  %11 = tail call noundef i64 @_ZNKSt6vectorIN8graphlab7dc_impl11dc_tcp_comm11socket_infoESaIS3_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #1
  %12 = icmp ult i64 %10, %11
  br i1 %12, label %.lr.ph, label %._crit_edge, !llvm.loop !20
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIN8graphlab7dc_impl11dc_tcp_comm11socket_infoESaIS3_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(216) ptr @_ZNKSt6vectorIN8graphlab7dc_impl11dc_tcp_comm11socket_infoESaIS3_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_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 = { 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, !11, i64 20}
!6 = !{!"_ZTSN8graphlab7dc_impl11dc_tcp_comm11socket_infoE", !7, i64 0, !10, i64 8, !11, i64 16, !11, i64 20, !10, i64 24, !10, i64 32, !12, i64 40, !13, i64 48, !14, i64 88, !19, i64 160}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!"int", !8, i64 0}
!12 = !{!"bool", !8, i64 0}
!13 = !{!"_ZTSN8graphlab5mutexE", !8, i64 0}
!14 = !{!"_ZTSN8graphlab7dc_impl21circular_iovec_bufferE", !15, i64 0, !15, i64 24, !7, i64 48, !7, i64 56, !7, i64 64}
!15 = !{!"_ZTSSt6vectorI5iovecSaIS0_EE", !16, i64 0}
!16 = !{!"_ZTSSt12_Vector_baseI5iovecSaIS0_EE", !17, i64 0}
!17 = !{!"_ZTSNSt12_Vector_baseI5iovecSaIS0_EE12_Vector_implE", !18, i64 0}
!18 = !{!"_ZTSNSt12_Vector_baseI5iovecSaIS0_EE17_Vector_impl_dataE", !10, i64 0, !10, i64 8, !10, i64 16}
!19 = !{!"_ZTS6msghdr", !10, i64 0, !11, i64 8, !10, i64 16, !7, i64 24, !10, i64 32, !7, i64 40, !11, i64 48}
!20 = distinct !{!20, !21}
!21 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass