; LLVM IR from guanzhi/GmSSL :: src (socket)

; 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"

@stderr = external global ptr, align 8
@.str = external hidden unnamed_addr constant [13 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [60 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [19 x i8], align 1
@__FUNCTION__.tls_socket_accept = external hidden unnamed_addr constant [18 x i8], align 1

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #0

; Function Attrs: nounwind
declare ptr @strerror(i32 noundef) #0

; Function Attrs: nounwind willreturn memory(none)
declare ptr @__errno_location() #1

; 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: nounwind uwtable
define dso_local i32 @tls_socket_accept(i32 noundef %0, ptr noundef %1, ptr noundef %2) #3 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store i32 %0, ptr %5, align 4, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !9
  store ptr %2, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  store i32 16, ptr %8, align 4, !tbaa !5
  %10 = load i32, ptr %5, align 4, !tbaa !5
  %11 = load ptr, ptr %6, align 8, !tbaa !9
  %12 = call i32 @accept(i32 noundef %10, ptr noundef %11, ptr noundef %8)
  %13 = load ptr, ptr %7, align 8, !tbaa !9
  store i32 %12, ptr %13, align 4, !tbaa !5
  %14 = icmp eq i32 %12, -1
  br i1 %14, label %15, label %26

15:                                               ; preds = %3
  %16 = load ptr, ptr @stderr, align 8, !tbaa !9
  %17 = call ptr @__errno_location() #6
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %19 = call ptr @strerror(i32 noundef %18) #5
  %20 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %16, ptr noundef @.str.5, ptr noundef @.str.1, i32 noundef 164, ptr noundef %19) #5
  br label %21

21:                                               ; preds = %15
  %22 = load ptr, ptr @stderr, align 8, !tbaa !9
  %23 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %22, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 165, ptr noundef @__FUNCTION__.tls_socket_accept) #5
  br label %24

24:                                               ; preds = %21
  br label %25

25:                                               ; preds = %24
  store i32 -1, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %27

26:                                               ; preds = %3
  store i32 1, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %27

27:                                               ; preds = %26, %25
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  %28 = load i32, ptr %4, align 4
  ret i32 %28
}

declare i32 @accept(i32 noundef, ptr noundef, ptr noundef) #4

attributes #0 = { 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 #1 = { 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 #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 = { "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 }
attributes #6 = { nounwind willreturn memory(none) }

!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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, 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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str = external hidden unnamed_addr constant [13 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [60 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [19 x i8], align 1
@__FUNCTION__.tls_socket_accept = external hidden unnamed_addr constant [18 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; 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 #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 2) i32 @tls_socket_accept(i32 noundef %0, ptr noundef %1, ptr nocapture noundef writeonly %2) local_unnamed_addr #4 {
  %4 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #6
  store i32 16, ptr %4, align 4, !tbaa !5
  %5 = call i32 @accept(i32 noundef %0, ptr noundef %1, ptr noundef nonnull %4) #6
  store i32 %5, ptr %2, align 4, !tbaa !5
  %6 = icmp eq i32 %5, -1
  br i1 %6, label %7, label %15

7:                                                ; preds = %3
  %8 = load ptr, ptr @stderr, align 8, !tbaa !9
  %9 = tail call ptr @__errno_location() #7
  %10 = load i32, ptr %9, align 4, !tbaa !5
  %11 = call ptr @strerror(i32 noundef %10) #6
  %12 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %8, ptr noundef nonnull @.str.5, ptr noundef nonnull @.str.1, i32 noundef 164, ptr noundef %11) #8
  %13 = load ptr, ptr @stderr, align 8, !tbaa !9
  %14 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %13, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 165, ptr noundef nonnull @__FUNCTION__.tls_socket_accept) #8
  br label %15

15:                                               ; preds = %3, %7
  %.0 = phi i32 [ -1, %7 ], [ 1, %3 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #6
  ret i32 %.0
}

declare i32 @accept(i32 noundef, ptr noundef, ptr noundef) local_unnamed_addr #5

attributes #0 = { nofree 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 #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 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 #3 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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 #5 = { "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 = { nounwind willreturn memory(none) }
attributes #8 = { cold 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}


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