; LLVM IR from openanolis/openssl :: doc/designs/ddd (ddd-04-fd-nonblocking)

; 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.app_conn_st = type { ptr, 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local ptr @new_conn(ptr noundef %0, i32 noundef %1, ptr noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store ptr %2, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #5
  %11 = call noalias ptr @calloc(i64 noundef 1, i64 noundef 24) #6
  store ptr %11, ptr %8, align 8, !tbaa !5
  %12 = load ptr, ptr %8, align 8, !tbaa !5
  %13 = icmp eq ptr %12, null
  br i1 %13, label %14, label %15

14:                                               ; preds = %3
  store ptr null, ptr %4, align 8
  store i32 1, ptr %10, align 4
  br label %54

15:                                               ; preds = %3
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = call ptr @SSL_new(ptr noundef %16)
  %18 = load ptr, ptr %8, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.app_conn_st, ptr %18, i32 0, i32 0
  store ptr %17, ptr %19, align 8, !tbaa !11
  store ptr %17, ptr %9, align 8, !tbaa !5
  %20 = load ptr, ptr %9, align 8, !tbaa !5
  %21 = icmp eq ptr %20, null
  br i1 %21, label %22, label %24

22:                                               ; preds = %15
  %23 = load ptr, ptr %8, align 8, !tbaa !5
  call void @free(ptr noundef %23) #5
  store ptr null, ptr %4, align 8
  store i32 1, ptr %10, align 4
  br label %54

24:                                               ; preds = %15
  %25 = load ptr, ptr %9, align 8, !tbaa !5
  call void @SSL_set_connect_state(ptr noundef %25)
  %26 = load ptr, ptr %9, align 8, !tbaa !5
  %27 = load i32, ptr %6, align 4, !tbaa !9
  %28 = call i32 @SSL_set_fd(ptr noundef %26, i32 noundef %27)
  %29 = icmp sle i32 %28, 0
  br i1 %29, label %30, label %33

30:                                               ; preds = %24
  %31 = load ptr, ptr %9, align 8, !tbaa !5
  call void @SSL_free(ptr noundef %31)
  %32 = load ptr, ptr %8, align 8, !tbaa !5
  call void @free(ptr noundef %32) #5
  store ptr null, ptr %4, align 8
  store i32 1, ptr %10, align 4
  br label %54

33:                                               ; preds = %24
  %34 = load ptr, ptr %9, align 8, !tbaa !5
  %35 = load ptr, ptr %7, align 8, !tbaa !5
  %36 = call i32 @SSL_set1_host(ptr noundef %34, ptr noundef %35)
  %37 = icmp sle i32 %36, 0
  br i1 %37, label %38, label %41

38:                                               ; preds = %33
  %39 = load ptr, ptr %9, align 8, !tbaa !5
  call void @SSL_free(ptr noundef %39)
  %40 = load ptr, ptr %8, align 8, !tbaa !5
  call void @free(ptr noundef %40) #5
  store ptr null, ptr %4, align 8
  store i32 1, ptr %10, align 4
  br label %54

41:                                               ; preds = %33
  %42 = load ptr, ptr %9, align 8, !tbaa !5
  %43 = load ptr, ptr %7, align 8, !tbaa !5
  %44 = call i64 @SSL_ctrl(ptr noundef %42, i32 noundef 55, i64 noundef 0, ptr noundef %43)
  %45 = icmp sle i64 %44, 0
  br i1 %45, label %46, label %49

46:                                               ; preds = %41
  %47 = load ptr, ptr %9, align 8, !tbaa !5
  call void @SSL_free(ptr noundef %47)
  %48 = load ptr, ptr %8, align 8, !tbaa !5
  call void @free(ptr noundef %48) #5
  store ptr null, ptr %4, align 8
  store i32 1, ptr %10, align 4
  br label %54

49:                                               ; preds = %41
  %50 = load i32, ptr %6, align 4, !tbaa !9
  %51 = load ptr, ptr %8, align 8, !tbaa !5
  %52 = getelementptr inbounds %struct.app_conn_st, ptr %51, i32 0, i32 1
  store i32 %50, ptr %52, align 8, !tbaa !13
  %53 = load ptr, ptr %8, align 8, !tbaa !5
  store ptr %53, ptr %4, align 8
  store i32 1, ptr %10, align 4
  br label %54

54:                                               ; preds = %49, %46, %38, %30, %22, %14
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #5
  %55 = load ptr, ptr %4, align 8
  ret ptr %55
}

; Function Attrs: nounwind allocsize(0,1)
declare noalias ptr @calloc(i64 noundef, i64 noundef) #2

declare ptr @SSL_new(ptr noundef) #3

; Function Attrs: nounwind
declare void @free(ptr noundef) #4

declare void @SSL_set_connect_state(ptr noundef) #3

declare i32 @SSL_set_fd(ptr noundef, i32 noundef) #3

declare void @SSL_free(ptr noundef) #3

declare i32 @SSL_set1_host(ptr noundef, ptr noundef) #3

declare i64 @SSL_ctrl(ptr noundef, i32 noundef, i64 noundef, ptr noundef) #3

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 allocsize(0,1) "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 "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 allocsize(0,1) }

!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, !6, i64 0}
!12 = !{!"app_conn_st", !6, i64 0, !10, i64 8, !10, i64 12, !10, i64 16}
!13 = !{!12, !10, i64 8}


; 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: nounwind uwtable
define dso_local noalias noundef ptr @new_conn(ptr noundef %0, i32 noundef %1, ptr noundef %2) local_unnamed_addr #0 {
  %4 = tail call noalias dereferenceable_or_null(24) ptr @calloc(i64 noundef 1, i64 noundef 24) #4
  %5 = icmp eq ptr %4, null
  br i1 %5, label %24, label %6

6:                                                ; preds = %3
  %7 = tail call ptr @SSL_new(ptr noundef %0) #5
  store ptr %7, ptr %4, align 8, !tbaa !5
  %8 = icmp eq ptr %7, null
  br i1 %8, label %9, label %10

9:                                                ; preds = %6
  tail call void @free(ptr noundef nonnull %4) #5
  br label %24

10:                                               ; preds = %6
  tail call void @SSL_set_connect_state(ptr noundef nonnull %7) #5
  %11 = tail call i32 @SSL_set_fd(ptr noundef nonnull %7, i32 noundef %1) #5
  %12 = icmp slt i32 %11, 1
  br i1 %12, label %13, label %14

13:                                               ; preds = %10
  tail call void @SSL_free(ptr noundef nonnull %7) #5
  tail call void @free(ptr noundef nonnull %4) #5
  br label %24

14:                                               ; preds = %10
  %15 = tail call i32 @SSL_set1_host(ptr noundef nonnull %7, ptr noundef %2) #5
  %16 = icmp slt i32 %15, 1
  br i1 %16, label %17, label %18

17:                                               ; preds = %14
  tail call void @SSL_free(ptr noundef nonnull %7) #5
  tail call void @free(ptr noundef nonnull %4) #5
  br label %24

18:                                               ; preds = %14
  %19 = tail call i64 @SSL_ctrl(ptr noundef nonnull %7, i32 noundef 55, i64 noundef 0, ptr noundef %2) #5
  %20 = icmp slt i64 %19, 1
  br i1 %20, label %21, label %22

21:                                               ; preds = %18
  tail call void @SSL_free(ptr noundef nonnull %7) #5
  tail call void @free(ptr noundef nonnull %4) #5
  br label %24

22:                                               ; preds = %18
  %23 = getelementptr inbounds i8, ptr %4, i64 8
  store i32 %1, ptr %23, align 8, !tbaa !11
  br label %24

24:                                               ; preds = %3, %22, %21, %17, %13, %9
  %.0 = phi ptr [ null, %9 ], [ null, %13 ], [ null, %17 ], [ null, %21 ], [ %4, %22 ], [ null, %3 ]
  ret ptr %.0
}

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,zeroed") allocsize(0,1) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @calloc(i64 noundef, i64 noundef) local_unnamed_addr #1

declare ptr @SSL_new(ptr noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #3

declare void @SSL_set_connect_state(ptr noundef) local_unnamed_addr #2

declare i32 @SSL_set_fd(ptr noundef, i32 noundef) local_unnamed_addr #2

declare void @SSL_free(ptr noundef) local_unnamed_addr #2

declare i32 @SSL_set1_host(ptr noundef, ptr noundef) local_unnamed_addr #2

declare i64 @SSL_ctrl(ptr noundef, i32 noundef, i64 noundef, ptr noundef) local_unnamed_addr #2

attributes #0 = { 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 = { mustprogress nofree nounwind willreturn allockind("alloc,zeroed") allocsize(0,1) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { "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 nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 allocsize(0,1) }
attributes #5 = { 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, !7, i64 0}
!6 = !{!"app_conn_st", !7, i64 0, !10, i64 8, !10, i64 12, !10, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !10, i64 8}


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