; LLVM IR from chensoft/libsocket :: src/base/basic_socket.ll (ZNK4chen12basic_socket4peerERNS_13basic_addressE)

; 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::error_code" = type { i32, ptr }
%struct.sockaddr_storage = type { i16, [118 x i8], i64 }

declare i32 @__gxx_personality_v0(...)

declare { i32, ptr } @_ZN4chen3sys5errorEv() #0

; Function Attrs: noinline noreturn nounwind uwtable
declare hidden void @__clang_call_terminate(ptr noundef) #1

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt10error_codeC2Ev(ptr noundef nonnull align 8 dereferenceable(16)) unnamed_addr #3 align 2

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

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #4

; Function Attrs: mustprogress nounwind uwtable
define dso_local { i32, ptr } @_ZNK4chen12basic_socket4peerERNS_13basic_addressE(ptr noundef nonnull align 8 dereferenceable(72) %0, ptr noundef nonnull align 8 dereferenceable(8) %1) #3 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca %"class.std::error_code", align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca %struct.sockaddr_storage, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %9 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 128, ptr %6) #6
  call void @llvm.memset.p0.i64(ptr align 8 %6, i8 0, i64 128, i1 false)
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #6
  store i32 128, ptr %7, align 4, !tbaa !9
  %10 = load ptr, ptr %9, align 8, !tbaa !11
  %11 = getelementptr inbounds ptr, ptr %10, i64 5
  %12 = load ptr, ptr %11, align 8
  %13 = invoke noundef i32 %12(ptr noundef nonnull align 8 dereferenceable(28) %9)
          to label %14 unwind label %32

14:                                               ; preds = %2
  %15 = call i32 @getpeername(i32 noundef %13, ptr noundef %6, ptr noundef %7) #6
  %16 = icmp slt i32 %15, 0
  br i1 %16, label %17, label %24

17:                                               ; preds = %14
  %18 = invoke { i32, ptr } @_ZN4chen3sys5errorEv()
          to label %19 unwind label %32

19:                                               ; preds = %17
  %20 = getelementptr inbounds { i32, ptr }, ptr %3, i32 0, i32 0
  %21 = extractvalue { i32, ptr } %18, 0
  store i32 %21, ptr %20, align 8
  %22 = getelementptr inbounds { i32, ptr }, ptr %3, i32 0, i32 1
  %23 = extractvalue { i32, ptr } %18, 1
  store ptr %23, ptr %22, align 8
  store i32 1, ptr %8, align 4
  br label %30

24:                                               ; preds = %14
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = load ptr, ptr %25, align 8, !tbaa !11
  %27 = getelementptr inbounds ptr, ptr %26, i64 4
  %28 = load ptr, ptr %27, align 8
  invoke void %28(ptr noundef nonnull align 8 dereferenceable(8) %25, ptr noundef %6)
          to label %29 unwind label %32

29:                                               ; preds = %24
  call void @_ZNSt10error_codeC2Ev(ptr noundef nonnull align 8 dereferenceable(16) %3) #6
  store i32 1, ptr %8, align 4
  br label %30

30:                                               ; preds = %29, %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #6
  call void @llvm.lifetime.end.p0(i64 128, ptr %6) #6
  %31 = load { i32, ptr }, ptr %3, align 8
  ret { i32, ptr } %31

32:                                               ; preds = %24, %17, %2
  %33 = landingpad { ptr, i32 }
          catch ptr null
  %34 = extractvalue { ptr, i32 } %33, 0
  call void @__clang_call_terminate(ptr %34) #7
  unreachable
}

; Function Attrs: nounwind
declare i32 @getpeername(i32 noundef, ptr noundef, ptr noundef) #5

attributes #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 = { noinline noreturn nounwind uwtable "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 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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #5 = { 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 #6 = { nounwind }
attributes #7 = { noreturn 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 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"vtable pointer", !8, 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::error_code" = type { i32, ptr }
%struct.sockaddr_storage = type { i16, [118 x i8], i64 }

declare i32 @__gxx_personality_v0(...)

declare { i32, ptr } @_ZN4chen3sys5errorEv() local_unnamed_addr #0

; Function Attrs: noinline noreturn nounwind uwtable
declare hidden void @__clang_call_terminate(ptr noundef) local_unnamed_addr #1

; 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 nounwind uwtable
declare dso_local void @_ZNSt10error_codeC2Ev(ptr noundef nonnull align 8 dereferenceable(16)) unnamed_addr #3 align 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 nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #4

; Function Attrs: mustprogress nounwind uwtable
define dso_local { i32, ptr } @_ZNK4chen12basic_socket4peerERNS_13basic_addressE(ptr noundef nonnull align 8 dereferenceable(72) %0, ptr noundef nonnull align 8 dereferenceable(8) %1) local_unnamed_addr #3 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca %"class.std::error_code", align 8
  %4 = alloca %struct.sockaddr_storage, align 8
  %5 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 128, ptr nonnull %4) #6
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(128) %4, i8 0, i64 128, i1 false)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #6
  store i32 128, ptr %5, align 4, !tbaa !5
  %6 = load ptr, ptr %0, align 8, !tbaa !9
  %7 = getelementptr inbounds i8, ptr %6, i64 40
  %8 = load ptr, ptr %7, align 8
  %9 = invoke noundef i32 %8(ptr noundef nonnull align 8 dereferenceable(28) %0)
          to label %10 unwind label %24

10:                                               ; preds = %2
  %11 = call i32 @getpeername(i32 noundef %9, ptr noundef nonnull %4, ptr noundef nonnull %5) #6
  %12 = icmp slt i32 %11, 0
  br i1 %12, label %13, label %18

13:                                               ; preds = %10
  %14 = invoke { i32, ptr } @_ZN4chen3sys5errorEv()
          to label %15 unwind label %24

15:                                               ; preds = %13
  %16 = extractvalue { i32, ptr } %14, 0
  %17 = extractvalue { i32, ptr } %14, 1
  br label %23

18:                                               ; preds = %10
  %19 = load ptr, ptr %1, align 8, !tbaa !9
  %20 = getelementptr inbounds i8, ptr %19, i64 32
  %21 = load ptr, ptr %20, align 8
  invoke void %21(ptr noundef nonnull align 8 dereferenceable(8) %1, ptr noundef nonnull %4)
          to label %22 unwind label %24

22:                                               ; preds = %18
  call void @_ZNSt10error_codeC2Ev(ptr noundef nonnull align 8 dereferenceable(16) %3) #6
  %.fca.0.load.pre = load i32, ptr %3, align 8
  %.fca.1.gep.phi.trans.insert = getelementptr inbounds i8, ptr %3, i64 8
  %.fca.1.load.pre = load ptr, ptr %.fca.1.gep.phi.trans.insert, align 8
  br label %23

23:                                               ; preds = %22, %15
  %.fca.1.load = phi ptr [ %.fca.1.load.pre, %22 ], [ %17, %15 ]
  %.fca.0.load = phi i32 [ %.fca.0.load.pre, %22 ], [ %16, %15 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #6
  call void @llvm.lifetime.end.p0(i64 128, ptr nonnull %4) #6
  %.fca.0.insert = insertvalue { i32, ptr } poison, i32 %.fca.0.load, 0
  %.fca.1.insert = insertvalue { i32, ptr } %.fca.0.insert, ptr %.fca.1.load, 1
  ret { i32, ptr } %.fca.1.insert

24:                                               ; preds = %18, %13, %2
  %25 = landingpad { ptr, i32 }
          catch ptr null
  %26 = extractvalue { ptr, i32 } %25, 0
  call void @__clang_call_terminate(ptr %26) #7
  unreachable
}

; Function Attrs: nounwind
declare i32 @getpeername(i32 noundef, ptr noundef, ptr noundef) local_unnamed_addr #5

attributes #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 = { noinline noreturn nounwind uwtable "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 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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #5 = { 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 #6 = { nounwind }
attributes #7 = { noreturn 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"vtable pointer", !8, i64 0}


; Effective O3 passes: BDCEPass,DSEPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SROAPass