; LLVM IR from wichue/nethello :: src/net/SocketBase.ll (ZN3chw8SockUtil16getInterfaceListB5cxx11Ev)

; 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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::map<std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>>, std::allocator<std::map<std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::map<std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>>, std::allocator<std::map<std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::map<std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>>, std::allocator<std::map<std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::map<std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>>, std::allocator<std::map<std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%class.anon.18 = type { ptr }

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) #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 @_ZN3chw8SockUtil16getInterfaceListB5cxx11Ev(ptr dead_on_unwind noalias writable sret(%"class.std::vector") align 8 %0) #1 align 2 personality ptr @__gxx_personality_v0 {
  %2 = alloca ptr, align 8
  %3 = alloca i1, align 1
  %4 = alloca %class.anon.18, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  store ptr %0, ptr %2, align 8
  store i1 false, ptr %3, align 1
  call void @_ZNSt6vectorISt3mapINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_St4lessIS6_ESaISt4pairIKS6_S6_EEESaISD_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %7 = getelementptr inbounds %class.anon.18, ptr %4, i32 0, i32 0
  store ptr %0, ptr %7, align 8, !tbaa !5
  invoke void @"_ZN3chw25for_each_netAdapter_posixIZNS_8SockUtil16getInterfaceListB5cxx11EvE3$_0EEvOT_"(ptr noundef nonnull align 8 dereferenceable(8) %4)
          to label %8 unwind label %10

8:                                                ; preds = %1
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  store i1 true, ptr %3, align 1
  %9 = load i1, ptr %3, align 1
  br i1 %9, label %15, label %14

10:                                               ; preds = %1
  %11 = landingpad { ptr, i32 }
          cleanup
  %12 = extractvalue { ptr, i32 } %11, 0
  store ptr %12, ptr %5, align 8
  %13 = extractvalue { ptr, i32 } %11, 1
  store i32 %13, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @_ZNSt6vectorISt3mapINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_St4lessIS6_ESaISt4pairIKS6_S6_EEESaISD_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  br label %16

14:                                               ; preds = %8
  call void @_ZNSt6vectorISt3mapINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_St4lessIS6_ESaISt4pairIKS6_S6_EEESaISD_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  br label %15

15:                                               ; preds = %14, %8
  ret void

16:                                               ; preds = %10
  %17 = load ptr, ptr %5, align 8
  %18 = load i32, ptr %6, align 4
  %19 = insertvalue { ptr, i32 } poison, ptr %17, 0
  %20 = insertvalue { ptr, i32 } %19, i32 %18, 1
  resume { ptr, i32 } %20
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt3mapINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_St4lessIS6_ESaISt4pairIKS6_S6_EEESaISD_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare hidden void @"_ZN3chw25for_each_netAdapter_posixIZNS_8SockUtil16getInterfaceListB5cxx11EvE3$_0EEvOT_"(ptr noundef nonnull align 8 dereferenceable(8)) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt3mapINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_St4lessIS6_ESaISt4pairIKS6_S6_EEESaISD_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 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 = { 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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::map<std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>>, std::allocator<std::map<std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::map<std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>>, std::allocator<std::map<std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::map<std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>>, std::allocator<std::map<std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::map<std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>>, std::allocator<std::map<std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%class.anon.18 = type { ptr }

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) #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 uwtable
define dso_local void @_ZN3chw8SockUtil16getInterfaceListB5cxx11Ev(ptr dead_on_unwind noalias nonnull writable sret(%"class.std::vector") align 8 %0) local_unnamed_addr #1 align 2 personality ptr @__gxx_personality_v0 {
  %2 = alloca %class.anon.18, align 8
  tail call void @_ZNSt6vectorISt3mapINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_St4lessIS6_ESaISt4pairIKS6_S6_EEESaISD_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  store ptr %0, ptr %2, align 8, !tbaa !5
  invoke void @"_ZN3chw25for_each_netAdapter_posixIZNS_8SockUtil16getInterfaceListB5cxx11EvE3$_0EEvOT_"(ptr noundef nonnull align 8 dereferenceable(8) %2)
          to label %3 unwind label %4

3:                                                ; preds = %1
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  ret void

4:                                                ; preds = %1
  %5 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  call void @_ZNSt6vectorISt3mapINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_St4lessIS6_ESaISt4pairIKS6_S6_EEESaISD_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  resume { ptr, i32 } %5
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt3mapINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_St4lessIS6_ESaISt4pairIKS6_S6_EEESaISD_EEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare hidden void @"_ZN3chw25for_each_netAdapter_posixIZNS_8SockUtil16getInterfaceListB5cxx11EvE3$_0EEvOT_"(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt3mapINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_St4lessIS6_ESaISt4pairIKS6_S6_EEESaISD_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

attributes #0 = { mustprogress 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 = { 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"}


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