; LLVM IR from nem0/lumixengine_net :: external/enet (packet)

; 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._ENetPacket = type { i64, i32, ptr, i64, ptr, ptr }

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

declare ptr @enet_malloc(i64 noundef) #1

declare void @enet_free(ptr noundef) #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

; 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 i32 @enet_packet_resize(ptr noundef %0, i64 noundef %1) #3 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %8 = load i64, ptr %5, align 8, !tbaa !9
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct._ENetPacket, ptr %9, i32 0, i32 3
  %11 = load i64, ptr %10, align 8, !tbaa !11
  %12 = icmp ule i64 %8, %11
  br i1 %12, label %19, label %13

13:                                               ; preds = %2
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct._ENetPacket, ptr %14, i32 0, i32 1
  %16 = load i32, ptr %15, align 8, !tbaa !14
  %17 = and i32 %16, 4
  %18 = icmp ne i32 %17, 0
  br i1 %18, label %19, label %23

19:                                               ; preds = %13, %2
  %20 = load i64, ptr %5, align 8, !tbaa !9
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct._ENetPacket, ptr %21, i32 0, i32 3
  store i64 %20, ptr %22, align 8, !tbaa !11
  store i32 0, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %46

23:                                               ; preds = %13
  %24 = load i64, ptr %5, align 8, !tbaa !9
  %25 = call ptr @enet_malloc(i64 noundef %24)
  store ptr %25, ptr %6, align 8, !tbaa !5
  %26 = load ptr, ptr %6, align 8, !tbaa !5
  %27 = icmp eq ptr %26, null
  br i1 %27, label %28, label %29

28:                                               ; preds = %23
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %46

29:                                               ; preds = %23
  %30 = load ptr, ptr %6, align 8, !tbaa !5
  %31 = load ptr, ptr %4, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct._ENetPacket, ptr %31, i32 0, i32 2
  %33 = load ptr, ptr %32, align 8, !tbaa !15
  %34 = load ptr, ptr %4, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct._ENetPacket, ptr %34, i32 0, i32 3
  %36 = load i64, ptr %35, align 8, !tbaa !11
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %30, ptr align 1 %33, i64 %36, i1 false)
  %37 = load ptr, ptr %4, align 8, !tbaa !5
  %38 = getelementptr inbounds %struct._ENetPacket, ptr %37, i32 0, i32 2
  %39 = load ptr, ptr %38, align 8, !tbaa !15
  call void @enet_free(ptr noundef %39)
  %40 = load ptr, ptr %6, align 8, !tbaa !5
  %41 = load ptr, ptr %4, align 8, !tbaa !5
  %42 = getelementptr inbounds %struct._ENetPacket, ptr %41, i32 0, i32 2
  store ptr %40, ptr %42, align 8, !tbaa !15
  %43 = load i64, ptr %5, align 8, !tbaa !9
  %44 = load ptr, ptr %4, align 8, !tbaa !5
  %45 = getelementptr inbounds %struct._ENetPacket, ptr %44, i32 0, i32 3
  store i64 %43, ptr %45, align 8, !tbaa !11
  store i32 0, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %46

46:                                               ; preds = %29, %28, %19
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  %47 = load i32, ptr %3, align 4
  ret i32 %47
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #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 #2 = { nocallback nofree 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 = { 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 = !{!"long", !7, i64 0}
!11 = !{!12, !10, i64 24}
!12 = !{!"_ENetPacket", !10, i64 0, !13, i64 8, !6, i64 16, !10, i64 24, !6, i64 32, !6, i64 40}
!13 = !{!"int", !7, i64 0}
!14 = !{!12, !13, i64 8}
!15 = !{!12, !6, 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"

declare ptr @enet_malloc(i64 noundef) local_unnamed_addr #0

declare void @enet_free(ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 1) i32 @enet_packet_resize(ptr nocapture noundef %0, i64 noundef %1) local_unnamed_addr #2 {
  %3 = getelementptr inbounds i8, ptr %0, i64 24
  %4 = load i64, ptr %3, align 8, !tbaa !5
  %.not = icmp ult i64 %4, %1
  br i1 %.not, label %5, label %.sink.split

5:                                                ; preds = %2
  %6 = getelementptr inbounds i8, ptr %0, i64 8
  %7 = load i32, ptr %6, align 8, !tbaa !12
  %8 = and i32 %7, 4
  %.not17 = icmp eq i32 %8, 0
  br i1 %.not17, label %9, label %.sink.split

9:                                                ; preds = %5
  %10 = tail call ptr @enet_malloc(i64 noundef %1) #3
  %11 = icmp eq ptr %10, null
  br i1 %11, label %17, label %12

12:                                               ; preds = %9
  %13 = getelementptr inbounds i8, ptr %0, i64 16
  %14 = load ptr, ptr %13, align 8, !tbaa !13
  %15 = load i64, ptr %3, align 8, !tbaa !5
  tail call void @llvm.memcpy.p0.p0.i64(ptr nonnull align 1 %10, ptr align 1 %14, i64 %15, i1 false)
  %16 = load ptr, ptr %13, align 8, !tbaa !13
  tail call void @enet_free(ptr noundef %16) #3
  store ptr %10, ptr %13, align 8, !tbaa !13
  br label %.sink.split

.sink.split:                                      ; preds = %2, %5, %12
  store i64 %1, ptr %3, align 8, !tbaa !5
  br label %17

17:                                               ; preds = %.sink.split, %9
  %.0 = phi i32 [ -1, %9 ], [ 0, %.sink.split ]
  ret i32 %.0
}

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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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 }

!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 24}
!6 = !{!"_ENetPacket", !7, i64 0, !10, i64 8, !11, i64 16, !7, i64 24, !11, i64 32, !11, i64 40}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!6, !10, i64 8}
!13 = !{!6, !11, i64 16}


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