; LLVM IR from tezc/sc :: socket (sc_sock)

; 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"

%struct.sc_sock = type { %struct.sc_sock_fd, i8, i32, [128 x i8] }
%struct.sc_sock_fd = type { i32, i32, i32 }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #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.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @sc_sock_set_blocking(ptr noundef, i1 noundef zeroext) #2

; Function Attrs: nounwind uwtable
declare hidden i32 @sc_sock_close(ptr noundef) #2

; Function Attrs: nounwind uwtable
declare hidden void @sc_sock_errstr(ptr noundef, i32 noundef) #2

; Function Attrs: nounwind
declare i32 @setsockopt(i32 noundef, i32 noundef, i32 noundef, ptr noundef, i32 noundef) #3

; Function Attrs: nounwind uwtable
declare hidden i32 @sc_sock_err() #2

; Function Attrs: nounwind uwtable
define dso_local i32 @sc_sock_accept(ptr noundef %0, ptr noundef %1) #2 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #5
  store i32 1, ptr %7, align 4, !tbaa !9
  store ptr %7, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #5
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.sc_sock, ptr %11, i32 0, i32 0
  %13 = getelementptr inbounds %struct.sc_sock_fd, ptr %12, i32 0, i32 0
  %14 = load i32, ptr %13, align 4, !tbaa !11
  %15 = call i32 @accept(i32 noundef %14, ptr noundef null, ptr noundef null)
  store i32 %15, ptr %9, align 4, !tbaa !9
  %16 = load i32, ptr %9, align 4, !tbaa !9
  %17 = icmp eq i32 %16, -1
  br i1 %17, label %18, label %31

18:                                               ; preds = %2
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.sc_sock, ptr %19, i32 0, i32 1
  %21 = load i8, ptr %20, align 4, !tbaa !15, !range !16, !noundef !17
  %22 = trunc i8 %21 to i1
  br i1 %22, label %28, label %23

23:                                               ; preds = %18
  %24 = call i32 @sc_sock_err()
  %25 = icmp eq i32 %24, 11
  br i1 %25, label %26, label %28

26:                                               ; preds = %23
  %27 = call ptr @__errno_location() #6
  store i32 11, ptr %27, align 4, !tbaa !9
  br label %30

28:                                               ; preds = %23, %18
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  call void @sc_sock_errstr(ptr noundef %29, i32 noundef 0)
  br label %30

30:                                               ; preds = %28, %26
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %10, align 4
  br label %71

31:                                               ; preds = %2
  %32 = load i32, ptr %9, align 4, !tbaa !9
  %33 = load ptr, ptr %5, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.sc_sock, ptr %33, i32 0, i32 0
  %35 = getelementptr inbounds %struct.sc_sock_fd, ptr %34, i32 0, i32 0
  store i32 %32, ptr %35, align 4, !tbaa !11
  %36 = load ptr, ptr %5, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.sc_sock, ptr %36, i32 0, i32 0
  %38 = getelementptr inbounds %struct.sc_sock_fd, ptr %37, i32 0, i32 1
  store i32 0, ptr %38, align 4, !tbaa !18
  %39 = load ptr, ptr %4, align 8, !tbaa !5
  %40 = getelementptr inbounds %struct.sc_sock, ptr %39, i32 0, i32 2
  %41 = load i32, ptr %40, align 4, !tbaa !19
  %42 = load ptr, ptr %5, align 8, !tbaa !5
  %43 = getelementptr inbounds %struct.sc_sock, ptr %42, i32 0, i32 2
  store i32 %41, ptr %43, align 4, !tbaa !19
  %44 = load ptr, ptr %5, align 8, !tbaa !5
  %45 = getelementptr inbounds %struct.sc_sock, ptr %44, i32 0, i32 2
  %46 = load i32, ptr %45, align 4, !tbaa !19
  %47 = icmp ne i32 %46, 1
  br i1 %47, label %48, label %56

48:                                               ; preds = %31
  %49 = load i32, ptr %9, align 4, !tbaa !9
  %50 = load ptr, ptr %6, align 8, !tbaa !5
  %51 = call i32 @setsockopt(i32 noundef %49, i32 noundef 6, i32 noundef 1, ptr noundef %50, i32 noundef 4) #5
  store i32 %51, ptr %8, align 4, !tbaa !9
  %52 = load i32, ptr %8, align 4, !tbaa !9
  %53 = icmp ne i32 %52, 0
  br i1 %53, label %54, label %55

54:                                               ; preds = %48
  br label %67

55:                                               ; preds = %48
  br label %56

56:                                               ; preds = %55, %31
  %57 = load ptr, ptr %5, align 8, !tbaa !5
  %58 = load ptr, ptr %4, align 8, !tbaa !5
  %59 = getelementptr inbounds %struct.sc_sock, ptr %58, i32 0, i32 1
  %60 = load i8, ptr %59, align 4, !tbaa !15, !range !16, !noundef !17
  %61 = trunc i8 %60 to i1
  %62 = call i32 @sc_sock_set_blocking(ptr noundef %57, i1 noundef zeroext %61)
  store i32 %62, ptr %8, align 4, !tbaa !9
  %63 = load i32, ptr %8, align 4, !tbaa !9
  %64 = icmp ne i32 %63, 0
  br i1 %64, label %65, label %66

65:                                               ; preds = %56
  br label %67

66:                                               ; preds = %56
  store i32 0, ptr %3, align 4
  store i32 1, ptr %10, align 4
  br label %71

67:                                               ; preds = %65, %54
  %68 = load ptr, ptr %4, align 8, !tbaa !5
  call void @sc_sock_errstr(ptr noundef %68, i32 noundef 0)
  %69 = load ptr, ptr %5, align 8, !tbaa !5
  %70 = call i32 @sc_sock_close(ptr noundef %69)
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %10, align 4
  br label %71

71:                                               ; preds = %67, %66, %30
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #5
  %72 = load i32, ptr %3, align 4
  ret i32 %72
}

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

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 "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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"sc_sock", !13, i64 0, !14, i64 12, !10, i64 16, !7, i64 20}
!13 = !{!"sc_sock_fd", !10, i64 0, !10, i64 4, !10, i64 8}
!14 = !{!"_Bool", !7, i64 0}
!15 = !{!12, !14, i64 12}
!16 = !{i8 0, i8 2}
!17 = !{}
!18 = !{!12, !10, i64 4}
!19 = !{!12, !10, i64 16}


; 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 nofree nosync nounwind willreturn memory(none)
declare ptr @__errno_location() local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @sc_sock_set_blocking(ptr noundef, i1 noundef zeroext) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare hidden i32 @sc_sock_close(ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare hidden void @sc_sock_errstr(ptr noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: nounwind
declare i32 @setsockopt(i32 noundef, i32 noundef, i32 noundef, ptr noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare hidden i32 @sc_sock_err() local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 1) i32 @sc_sock_accept(ptr noundef %0, ptr noundef %1) local_unnamed_addr #1 {
  %3 = alloca i32, align 4
  store i32 1, ptr %3, align 4, !tbaa !5
  %4 = load i32, ptr %0, align 4, !tbaa !9
  %5 = tail call i32 @accept(i32 noundef %4, ptr noundef null, ptr noundef null) #4
  %6 = icmp eq i32 %5, -1
  br i1 %6, label %7, label %17

7:                                                ; preds = %2
  %8 = getelementptr inbounds i8, ptr %0, i64 12
  %9 = load i8, ptr %8, align 4, !tbaa !13, !range !14, !noundef !15
  %10 = trunc nuw i8 %9 to i1
  br i1 %10, label %16, label %11

11:                                               ; preds = %7
  %12 = tail call i32 @sc_sock_err()
  %13 = icmp eq i32 %12, 11
  br i1 %13, label %14, label %16

14:                                               ; preds = %11
  %15 = tail call ptr @__errno_location() #5
  store i32 11, ptr %15, align 4, !tbaa !5
  br label %31

16:                                               ; preds = %11, %7
  tail call void @sc_sock_errstr(ptr noundef nonnull %0, i32 noundef 0)
  br label %31

17:                                               ; preds = %2
  store i32 %5, ptr %1, align 4, !tbaa !9
  %18 = getelementptr inbounds i8, ptr %1, i64 4
  store i32 0, ptr %18, align 4, !tbaa !16
  %19 = getelementptr inbounds i8, ptr %0, i64 16
  %20 = load i32, ptr %19, align 4, !tbaa !17
  %21 = getelementptr inbounds i8, ptr %1, i64 16
  store i32 %20, ptr %21, align 4, !tbaa !17
  %.not = icmp eq i32 %20, 1
  br i1 %.not, label %24, label %22

22:                                               ; preds = %17
  %23 = call i32 @setsockopt(i32 noundef %5, i32 noundef 6, i32 noundef 1, ptr noundef nonnull %3, i32 noundef 4) #4
  %.not19 = icmp eq i32 %23, 0
  br i1 %.not19, label %24, label %29

24:                                               ; preds = %22, %17
  %25 = getelementptr inbounds i8, ptr %0, i64 12
  %26 = load i8, ptr %25, align 4, !tbaa !13, !range !14, !noundef !15
  %27 = trunc nuw i8 %26 to i1
  %28 = call i32 @sc_sock_set_blocking(ptr noundef nonnull %1, i1 noundef zeroext %27)
  %.not20 = icmp eq i32 %28, 0
  br i1 %.not20, label %31, label %29

29:                                               ; preds = %24, %22
  call void @sc_sock_errstr(ptr noundef nonnull %0, i32 noundef 0)
  %30 = call i32 @sc_sock_close(ptr noundef nonnull %1)
  br label %31

31:                                               ; preds = %24, %14, %16, %29
  %.0 = phi i32 [ -1, %29 ], [ -1, %16 ], [ -1, %14 ], [ 0, %24 ]
  ret i32 %.0
}

declare i32 @accept(i32 noundef, ptr noundef, ptr noundef) local_unnamed_addr #3

attributes #0 = { 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 #1 = { 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 "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 = { "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 = { nounwind }
attributes #5 = { 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, !6, i64 0}
!10 = !{!"sc_sock", !11, i64 0, !12, i64 12, !6, i64 16, !7, i64 20}
!11 = !{!"sc_sock_fd", !6, i64 0, !6, i64 4, !6, i64 8}
!12 = !{!"_Bool", !7, i64 0}
!13 = !{!10, !12, i64 12}
!14 = !{i8 0, i8 2}
!15 = !{}
!16 = !{!10, !6, i64 4}
!17 = !{!10, !6, i64 16}


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