; LLVM IR from ICOMP-UNC/cppSocketLib :: src/cppSocket.ll (ZN13UDPConnection7receiveB5cxx11Ev)

; 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::__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" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<char, std::allocator<char>>::_Vector_impl" }
%"struct.std::_Vector_base<char, std::allocator<char>>::_Vector_impl" = type { %"struct.std::_Vector_base<char, std::allocator<char>>::_Vector_impl_data" }
%"struct.std::_Vector_base<char, std::allocator<char>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator" = type { i8 }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%class.IConnection = type { ptr, %"class.std::__cxx11::basic_string", %"class.std::__cxx11::basic_string", i8, i32 }

@_ZTISt13runtime_error = external constant ptr
@.str.17 = external hidden unnamed_addr constant [23 x i8], align 1

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #0 align 2

declare ptr @__cxa_allocate_exception(i64)

declare void @__cxa_free_exception(ptr)

; Function Attrs: nounwind
declare void @_ZNSt13runtime_errorD1Ev(ptr noundef nonnull align 8 dereferenceable(16)) unnamed_addr #1

declare void @__cxa_throw(ptr, ptr, ptr)

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIcSaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIcSaIcEE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #3 align 2

declare i64 @recv(i32 noundef, ptr noundef, i64 noundef, i32 noundef) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNSt6vectorIcSaIcEE4dataEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIcSaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIcSaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIcSaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IN9__gnu_cxx17__normal_iteratorIPcSt6vectorIcS3_EEEvEET_SC_RKS3_(ptr noundef nonnull align 8 dereferenceable(32), ptr, ptr, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIcSaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: nounwind
declare ptr @strerror(i32 noundef) #1

; Function Attrs: nounwind willreturn memory(none)
declare ptr @__errno_location() #5

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN13UDPConnection7receiveB5cxx11Ev(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8 %0, ptr noundef nonnull align 8 dereferenceable(136) %1) unnamed_addr #3 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca %"class.std::vector", align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca %"class.std::__cxx11::basic_string", align 8
  %10 = alloca %"class.std::__cxx11::basic_string", align 8
  %11 = alloca %"class.std::allocator", align 1
  %12 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %13 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %14 = alloca %"class.std::allocator", align 1
  store ptr %0, ptr %3, align 8
  store ptr %1, ptr %4, align 8, !tbaa !5
  %15 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 24, ptr %5) #7
  call void @_ZNSt6vectorIcSaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #7
  invoke void @_ZNSt6vectorIcSaIcEE7reserveEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef 10000)
          to label %16 unwind label %34

16:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #7
  %17 = getelementptr inbounds %class.IConnection, ptr %15, i32 0, i32 4
  %18 = load i32, ptr %17, align 4, !tbaa !9
  %19 = call noundef ptr @_ZNSt6vectorIcSaIcEE4dataEv(ptr noundef nonnull align 8 dereferenceable(24) %5) #7
  %20 = call noundef i64 @_ZNKSt6vectorIcSaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %5) #7
  %21 = invoke i64 @recv(i32 noundef %18, ptr noundef %19, i64 noundef %20, i32 noundef 0)
          to label %22 unwind label %38

22:                                               ; preds = %16
  %23 = trunc i64 %21 to i32
  store i32 %23, ptr %8, align 4, !tbaa !16
  %24 = load i32, ptr %8, align 4, !tbaa !16
  %25 = icmp slt i32 %24, 0
  br i1 %25, label %26, label %61

26:                                               ; preds = %22
  call void @llvm.lifetime.start.p0(i64 32, ptr %9) #7
  call void @llvm.lifetime.start.p0(i64 32, ptr %10) #7
  call void @llvm.lifetime.start.p0(i64 1, ptr %11) #7
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %11) #7
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %10, ptr noundef @.str.17, ptr noundef nonnull align 1 dereferenceable(1) %11)
          to label %27 unwind label %42

27:                                               ; preds = %26
  %28 = call ptr @__errno_location() #8
  %29 = load i32, ptr %28, align 4, !tbaa !16
  %30 = call ptr @strerror(i32 noundef %29) #7
  invoke void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_PKS5_(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %9, ptr noundef nonnull align 8 dereferenceable(32) %10, ptr noundef %30)
          to label %31 unwind label %46

31:                                               ; preds = %27
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %10) #7
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %11) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr %11) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr %10) #7
  %32 = call ptr @__cxa_allocate_exception(i64 16) #7
  invoke void @_ZNSt13runtime_errorC1ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(16) %32, ptr noundef nonnull align 8 dereferenceable(32) %9)
          to label %33 unwind label %51

33:                                               ; preds = %31
  invoke void @__cxa_throw(ptr %32, ptr @_ZTISt13runtime_error, ptr @_ZNSt13runtime_errorD1Ev) #9
          to label %85 unwind label %55

34:                                               ; preds = %2
  %35 = landingpad { ptr, i32 }
          cleanup
  %36 = extractvalue { ptr, i32 } %35, 0
  store ptr %36, ptr %6, align 8
  %37 = extractvalue { ptr, i32 } %35, 1
  store i32 %37, ptr %7, align 4
  br label %79

38:                                               ; preds = %61, %16
  %39 = landingpad { ptr, i32 }
          cleanup
  %40 = extractvalue { ptr, i32 } %39, 0
  store ptr %40, ptr %6, align 8
  %41 = extractvalue { ptr, i32 } %39, 1
  store i32 %41, ptr %7, align 4
  br label %78

42:                                               ; preds = %26
  %43 = landingpad { ptr, i32 }
          cleanup
  %44 = extractvalue { ptr, i32 } %43, 0
  store ptr %44, ptr %6, align 8
  %45 = extractvalue { ptr, i32 } %43, 1
  store i32 %45, ptr %7, align 4
  br label %50

46:                                               ; preds = %27
  %47 = landingpad { ptr, i32 }
          cleanup
  %48 = extractvalue { ptr, i32 } %47, 0
  store ptr %48, ptr %6, align 8
  %49 = extractvalue { ptr, i32 } %47, 1
  store i32 %49, ptr %7, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %10) #7
  br label %50

50:                                               ; preds = %46, %42
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %11) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr %11) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr %10) #7
  br label %60

51:                                               ; preds = %31
  %52 = landingpad { ptr, i32 }
          cleanup
  %53 = extractvalue { ptr, i32 } %52, 0
  store ptr %53, ptr %6, align 8
  %54 = extractvalue { ptr, i32 } %52, 1
  store i32 %54, ptr %7, align 4
  call void @__cxa_free_exception(ptr %32) #7
  br label %59

55:                                               ; preds = %33
  %56 = landingpad { ptr, i32 }
          cleanup
  %57 = extractvalue { ptr, i32 } %56, 0
  store ptr %57, ptr %6, align 8
  %58 = extractvalue { ptr, i32 } %56, 1
  store i32 %58, ptr %7, align 4
  br label %59

59:                                               ; preds = %55, %51
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %9) #7
  br label %60

60:                                               ; preds = %59, %50
  call void @llvm.lifetime.end.p0(i64 32, ptr %9) #7
  br label %78

61:                                               ; preds = %22
  %62 = load i32, ptr %8, align 4, !tbaa !16
  %63 = sext i32 %62 to i64
  invoke void @_ZNSt6vectorIcSaIcEE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %63)
          to label %64 unwind label %38

64:                                               ; preds = %61
  %65 = call ptr @_ZNSt6vectorIcSaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %5) #7
  %66 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %12, i32 0, i32 0
  store ptr %65, ptr %66, align 8
  %67 = call ptr @_ZNSt6vectorIcSaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %5) #7
  %68 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %13, i32 0, i32 0
  store ptr %67, ptr %68, align 8
  call void @llvm.lifetime.start.p0(i64 1, ptr %14) #7
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %14) #7
  %69 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %12, i32 0, i32 0
  %70 = load ptr, ptr %69, align 8
  %71 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %13, i32 0, i32 0
  %72 = load ptr, ptr %71, align 8
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IN9__gnu_cxx17__normal_iteratorIPcSt6vectorIcS3_EEEvEET_SC_RKS3_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr %70, ptr %72, ptr noundef nonnull align 1 dereferenceable(1) %14)
          to label %73 unwind label %74

73:                                               ; preds = %64
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %14) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr %14) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #7
  call void @_ZNSt6vectorIcSaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr %5) #7
  ret void

74:                                               ; preds = %64
  %75 = landingpad { ptr, i32 }
          cleanup
  %76 = extractvalue { ptr, i32 } %75, 0
  store ptr %76, ptr %6, align 8
  %77 = extractvalue { ptr, i32 } %75, 1
  store i32 %77, ptr %7, align 4
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %14) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr %14) #7
  br label %78

78:                                               ; preds = %74, %60, %38
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #7
  br label %79

79:                                               ; preds = %78, %34
  call void @_ZNSt6vectorIcSaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr %5) #7
  br label %80

80:                                               ; preds = %79
  %81 = load ptr, ptr %6, align 8
  %82 = load i32, ptr %7, align 4
  %83 = insertvalue { ptr, i32 } poison, ptr %81, 0
  %84 = insertvalue { ptr, i32 } %83, i32 %82, 1
  resume { ptr, i32 } %84

85:                                               ; preds = %33
  unreachable
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIcSaIcEE7reserveEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_PKS5_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), ptr noundef) #6

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

declare void @_ZNSt13runtime_errorC1ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) 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 "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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #4 = { "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 #5 = { nounwind willreturn memory(none) "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 #6 = { inlinehint 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 #7 = { nounwind }
attributes #8 = { nounwind willreturn memory(none) }
attributes #9 = { noreturn }

!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, !15, i64 76}
!10 = !{!"_ZTS11IConnection", !11, i64 8, !11, i64 40, !14, i64 72, !15, i64 76}
!11 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE", !12, i64 0, !13, i64 8, !7, i64 16}
!12 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_Alloc_hiderE", !6, i64 0}
!13 = !{!"long", !7, i64 0}
!14 = !{!"bool", !7, i64 0}
!15 = !{!"int", !7, i64 0}
!16 = !{!15, !15, 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"

%"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" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<char, std::allocator<char>>::_Vector_impl" }
%"struct.std::_Vector_base<char, std::allocator<char>>::_Vector_impl" = type { %"struct.std::_Vector_base<char, std::allocator<char>>::_Vector_impl_data" }
%"struct.std::_Vector_base<char, std::allocator<char>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator" = type { i8 }

@_ZTISt13runtime_error = external constant ptr
@.str.17 = external hidden unnamed_addr constant [23 x i8], align 1

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #0 align 2

declare ptr @__cxa_allocate_exception(i64) local_unnamed_addr

declare void @__cxa_free_exception(ptr) local_unnamed_addr

; Function Attrs: nounwind
declare void @_ZNSt13runtime_errorD1Ev(ptr noundef nonnull align 8 dereferenceable(16)) unnamed_addr #1

declare void @__cxa_throw(ptr, ptr, ptr) local_unnamed_addr

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIcSaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIcSaIcEE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #3 align 2

declare i64 @recv(i32 noundef, ptr noundef, i64 noundef, i32 noundef) local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNSt6vectorIcSaIcEE4dataEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIcSaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIcSaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIcSaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IN9__gnu_cxx17__normal_iteratorIPcSt6vectorIcS3_EEEvEET_SC_RKS3_(ptr noundef nonnull align 8 dereferenceable(32), ptr, ptr, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIcSaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: nounwind
declare ptr @strerror(i32 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none)
declare ptr @__errno_location() local_unnamed_addr #5

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN13UDPConnection7receiveB5cxx11Ev(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8 %0, ptr nocapture noundef nonnull readonly align 8 dereferenceable(136) %1) unnamed_addr #3 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca %"class.std::vector", align 8
  %4 = alloca %"class.std::__cxx11::basic_string", align 8
  %5 = alloca %"class.std::__cxx11::basic_string", align 8
  %6 = alloca %"class.std::allocator", align 1
  %7 = alloca %"class.std::allocator", align 1
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %3) #7
  call void @_ZNSt6vectorIcSaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  invoke void @_ZNSt6vectorIcSaIcEE7reserveEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef 10000)
          to label %8 unwind label %24

8:                                                ; preds = %2
  %9 = getelementptr inbounds i8, ptr %1, i64 76
  %10 = load i32, ptr %9, align 4, !tbaa !5
  %11 = call noundef ptr @_ZNSt6vectorIcSaIcEE4dataEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  %12 = call noundef i64 @_ZNKSt6vectorIcSaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  %13 = invoke i64 @recv(i32 noundef %10, ptr noundef %11, i64 noundef %12, i32 noundef 0)
          to label %14 unwind label %26

14:                                               ; preds = %8
  %15 = and i64 %13, 2147483648
  %.not = icmp eq i64 %15, 0
  br i1 %.not, label %39, label %16

16:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %4) #7
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %5) #7
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %6) #7
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #7
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %5, ptr noundef nonnull @.str.17, ptr noundef nonnull align 1 dereferenceable(1) %6)
          to label %17 unwind label %28

17:                                               ; preds = %16
  %18 = tail call ptr @__errno_location() #8
  %19 = load i32, ptr %18, align 4, !tbaa !15
  %20 = call ptr @strerror(i32 noundef %19) #7
  invoke void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_PKS5_(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %4, ptr noundef nonnull align 8 dereferenceable(32) %5, ptr noundef %20)
          to label %21 unwind label %30

21:                                               ; preds = %17
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %5) #7
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %6) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %5) #7
  %22 = call ptr @__cxa_allocate_exception(i64 16) #7
  invoke void @_ZNSt13runtime_errorC1ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(16) %22, ptr noundef nonnull align 8 dereferenceable(32) %4)
          to label %23 unwind label %33

23:                                               ; preds = %21
  invoke void @__cxa_throw(ptr nonnull %22, ptr nonnull @_ZTISt13runtime_error, ptr nonnull @_ZNSt13runtime_errorD1Ev) #9
          to label %48 unwind label %35

24:                                               ; preds = %2
  %25 = landingpad { ptr, i32 }
          cleanup
  br label %47

26:                                               ; preds = %39, %8
  %27 = landingpad { ptr, i32 }
          cleanup
  br label %47

28:                                               ; preds = %16
  %29 = landingpad { ptr, i32 }
          cleanup
  br label %32

30:                                               ; preds = %17
  %31 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %5) #7
  br label %32

32:                                               ; preds = %30, %28
  %.pn = phi { ptr, i32 } [ %31, %30 ], [ %29, %28 ]
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %6) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %5) #7
  br label %38

33:                                               ; preds = %21
  %34 = landingpad { ptr, i32 }
          cleanup
  call void @__cxa_free_exception(ptr %22) #7
  br label %37

35:                                               ; preds = %23
  %36 = landingpad { ptr, i32 }
          cleanup
  br label %37

37:                                               ; preds = %35, %33
  %.pn12 = phi { ptr, i32 } [ %36, %35 ], [ %34, %33 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #7
  br label %38

38:                                               ; preds = %37, %32
  %.pn12.pn = phi { ptr, i32 } [ %.pn12, %37 ], [ %.pn, %32 ]
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #7
  br label %47

39:                                               ; preds = %14
  %40 = and i64 %13, 2147483647
  invoke void @_ZNSt6vectorIcSaIcEE6resizeEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %40)
          to label %41 unwind label %26

41:                                               ; preds = %39
  %42 = call ptr @_ZNSt6vectorIcSaIcEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  %43 = call ptr @_ZNSt6vectorIcSaIcEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %7) #7
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #7
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IN9__gnu_cxx17__normal_iteratorIPcSt6vectorIcS3_EEEvEET_SC_RKS3_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr %42, ptr %43, ptr noundef nonnull align 1 dereferenceable(1) %7)
          to label %44 unwind label %45

44:                                               ; preds = %41
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %7) #7
  call void @_ZNSt6vectorIcSaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #7
  ret void

45:                                               ; preds = %41
  %46 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %7) #7
  br label %47

47:                                               ; preds = %26, %38, %45, %24
  %.pn12.pn.pn.pn = phi { ptr, i32 } [ %25, %24 ], [ %.pn12.pn, %38 ], [ %46, %45 ], [ %27, %26 ]
  call void @_ZNSt6vectorIcSaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #7
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #7
  resume { ptr, i32 } %.pn12.pn.pn.pn

48:                                               ; preds = %23
  unreachable
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIcSaIcEE7reserveEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_PKS5_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), ptr noundef) local_unnamed_addr #6

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

declare void @_ZNSt13runtime_errorC1ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) 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 "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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #4 = { "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 #5 = { mustprogress nofree nosync nounwind willreturn memory(none) "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 #6 = { inlinehint 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 #7 = { nounwind }
attributes #8 = { nounwind willreturn memory(none) }
attributes #9 = { noreturn }

!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, !14, i64 76}
!6 = !{!"_ZTS11IConnection", !7, i64 8, !7, i64 40, !13, i64 72, !14, i64 76}
!7 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE", !8, i64 0, !12, i64 8, !10, i64 16}
!8 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_Alloc_hiderE", !9, i64 0}
!9 = !{!"any pointer", !10, i64 0}
!10 = !{!"omnipotent char", !11, i64 0}
!11 = !{!"Simple C++ TBAA"}
!12 = !{!"long", !10, i64 0}
!13 = !{!"bool", !10, i64 0}
!14 = !{!"int", !10, i64 0}
!15 = !{!14, !14, i64 0}


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