; LLVM IR from wichue/nethello :: depend/kcp (ikcp)

; 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.__va_list_tag = type { i32, i32, ptr, ptr }
%struct.IKCPCB = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, %struct.IQUEUEHEAD, %struct.IQUEUEHEAD, %struct.IQUEUEHEAD, %struct.IQUEUEHEAD, ptr, i32, i32, ptr, ptr, i32, i32, i32, i32, i32, ptr, ptr }
%struct.IQUEUEHEAD = type { ptr, ptr }

; Function Attrs: nounwind uwtable
define dso_local void @ikcp_log(ptr noundef %0, i32 noundef %1, ptr noundef %2, ...) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca [1024 x i8], align 16
  %8 = alloca [1 x %struct.__va_list_tag], align 16
  %9 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1024, ptr %7) #4
  call void @llvm.lifetime.start.p0(i64 24, ptr %8) #4
  %10 = load i32, ptr %5, align 4, !tbaa !9
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.IKCPCB, ptr %11, i32 0, i32 46
  %13 = load i32, ptr %12, align 8, !tbaa !11
  %14 = and i32 %10, %13
  %15 = icmp eq i32 %14, 0
  br i1 %15, label %21, label %16

16:                                               ; preds = %3
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.IKCPCB, ptr %17, i32 0, i32 48
  %19 = load ptr, ptr %18, align 8, !tbaa !14
  %20 = icmp eq ptr %19, null
  br i1 %20, label %21, label %22

21:                                               ; preds = %16, %3
  store i32 1, ptr %9, align 4
  br label %37

22:                                               ; preds = %16
  %23 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %8, i64 0, i64 0
  call void @llvm.va_start.p0(ptr %23)
  %24 = getelementptr inbounds [1024 x i8], ptr %7, i64 0, i64 0
  %25 = load ptr, ptr %6, align 8, !tbaa !5
  %26 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %8, i64 0, i64 0
  %27 = call i32 @vsprintf(ptr noundef %24, ptr noundef %25, ptr noundef %26) #4
  %28 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %8, i64 0, i64 0
  call void @llvm.va_end.p0(ptr %28)
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.IKCPCB, ptr %29, i32 0, i32 48
  %31 = load ptr, ptr %30, align 8, !tbaa !14
  %32 = getelementptr inbounds [1024 x i8], ptr %7, i64 0, i64 0
  %33 = load ptr, ptr %4, align 8, !tbaa !5
  %34 = load ptr, ptr %4, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.IKCPCB, ptr %34, i32 0, i32 40
  %36 = load ptr, ptr %35, align 8, !tbaa !15
  call void %31(ptr noundef %32, ptr noundef %33, ptr noundef %36)
  store i32 0, ptr %9, align 4
  br label %37

37:                                               ; preds = %22, %21
  call void @llvm.lifetime.end.p0(i64 24, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 1024, ptr %7) #4
  %38 = load i32, ptr %9, align 4
  switch i32 %38, label %40 [
    i32 0, label %39
    i32 1, label %39
  ]

39:                                               ; preds = %37, %37
  ret void

40:                                               ; preds = %37
  unreachable
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.va_start.p0(ptr) #2

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

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.va_end.p0(ptr) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nocallback nofree nosync nounwind willreturn }
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 = { 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 248}
!12 = !{!"IKCPCB", !10, i64 0, !10, i64 4, !10, i64 8, !10, i64 12, !10, i64 16, !10, i64 20, !10, i64 24, !10, i64 28, !10, i64 32, !10, i64 36, !10, i64 40, !10, i64 44, !10, i64 48, !10, i64 52, !10, i64 56, !10, i64 60, !10, i64 64, !10, i64 68, !10, i64 72, !10, i64 76, !10, i64 80, !10, i64 84, !10, i64 88, !10, i64 92, !10, i64 96, !10, i64 100, !10, i64 104, !10, i64 108, !10, i64 112, !10, i64 116, !10, i64 120, !10, i64 124, !10, i64 128, !13, i64 136, !13, i64 152, !13, i64 168, !13, i64 184, !6, i64 200, !10, i64 208, !10, i64 212, !6, i64 216, !6, i64 224, !10, i64 232, !10, i64 236, !10, i64 240, !10, i64 244, !10, i64 248, !6, i64 256, !6, i64 264}
!13 = !{!"IQUEUEHEAD", !6, i64 0, !6, i64 8}
!14 = !{!12, !6, i64 264}
!15 = !{!12, !6, i64 216}


; 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"

%struct.__va_list_tag = type { i32, i32, ptr, ptr }

; Function Attrs: nounwind uwtable
define dso_local void @ikcp_log(ptr noundef %0, i32 noundef %1, ptr nocapture noundef readonly %2, ...) local_unnamed_addr #0 {
  %4 = alloca [1024 x i8], align 16
  %5 = alloca [1 x %struct.__va_list_tag], align 16
  call void @llvm.lifetime.start.p0(i64 1024, ptr nonnull %4) #4
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %5) #4
  %6 = getelementptr inbounds i8, ptr %0, i64 248
  %7 = load i32, ptr %6, align 8, !tbaa !5
  %8 = and i32 %7, %1
  %9 = icmp eq i32 %8, 0
  br i1 %9, label %19, label %10

10:                                               ; preds = %3
  %11 = getelementptr inbounds i8, ptr %0, i64 264
  %12 = load ptr, ptr %11, align 8, !tbaa !12
  %13 = icmp eq ptr %12, null
  br i1 %13, label %19, label %14

14:                                               ; preds = %10
  call void @llvm.va_start.p0(ptr nonnull %5)
  %15 = call i32 @vsprintf(ptr noundef nonnull %4, ptr noundef %2, ptr noundef nonnull %5) #4
  call void @llvm.va_end.p0(ptr nonnull %5)
  %16 = load ptr, ptr %11, align 8, !tbaa !12
  %17 = getelementptr inbounds i8, ptr %0, i64 216
  %18 = load ptr, ptr %17, align 8, !tbaa !13
  call void %16(ptr noundef nonnull %4, ptr noundef nonnull %0, ptr noundef %18) #4
  br label %19

19:                                               ; preds = %3, %10, %14
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %5) #4
  call void @llvm.lifetime.end.p0(i64 1024, ptr nonnull %4) #4
  ret void
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare void @llvm.va_start.p0(ptr) #2

; Function Attrs: nofree nounwind
declare noundef i32 @vsprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ptr noundef) local_unnamed_addr #3

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare void @llvm.va_end.p0(ptr) #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nocallback nofree nosync nounwind willreturn }
attributes #3 = { 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 #4 = { 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 248}
!6 = !{!"IKCPCB", !7, i64 0, !7, i64 4, !7, i64 8, !7, i64 12, !7, i64 16, !7, i64 20, !7, i64 24, !7, i64 28, !7, i64 32, !7, i64 36, !7, i64 40, !7, i64 44, !7, i64 48, !7, i64 52, !7, i64 56, !7, i64 60, !7, i64 64, !7, i64 68, !7, i64 72, !7, i64 76, !7, i64 80, !7, i64 84, !7, i64 88, !7, i64 92, !7, i64 96, !7, i64 100, !7, i64 104, !7, i64 108, !7, i64 112, !7, i64 116, !7, i64 120, !7, i64 124, !7, i64 128, !10, i64 136, !10, i64 152, !10, i64 168, !10, i64 184, !11, i64 200, !7, i64 208, !7, i64 212, !11, i64 216, !11, i64 224, !7, i64 232, !7, i64 236, !7, i64 240, !7, i64 244, !7, i64 248, !11, i64 256, !11, i64 264}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"IQUEUEHEAD", !11, i64 0, !11, i64 8}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!6, !11, i64 264}
!13 = !{!6, !11, i64 216}


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