; LLVM IR from thalium/icebox :: third_party/virtualbox/src/VBox/Devices/EFI/Firmware/NetworkPkg/Ip6Dxe (Ip6CreateRouteEntry)

; 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.IP6_ROUTE_ENTRY = type { %struct._LIST_ENTRY, i64, i32, i8, %struct.EFI_IPv6_ADDRESS, %struct.EFI_IPv6_ADDRESS }
%struct._LIST_ENTRY = type { ptr, ptr }
%struct.EFI_IPv6_ADDRESS = type { [16 x i8] }

; 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 @Ip6CreateRouteEntry(ptr noundef %0, i8 noundef zeroext %1, ptr noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i8, align 1
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i8 %1, ptr %6, align 1, !tbaa !9
  store ptr %2, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %10 = call ptr @AllocateZeroPool(i64 noundef 64)
  store ptr %10, ptr %8, align 8, !tbaa !5
  %11 = load ptr, ptr %8, align 8, !tbaa !5
  %12 = icmp eq ptr %11, null
  br i1 %12, label %13, label %14

13:                                               ; preds = %3
  store ptr null, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %39

14:                                               ; preds = %3
  %15 = load ptr, ptr %8, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.IP6_ROUTE_ENTRY, ptr %15, i32 0, i32 1
  store i64 1, ptr %16, align 8, !tbaa !10
  %17 = load ptr, ptr %8, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.IP6_ROUTE_ENTRY, ptr %17, i32 0, i32 2
  store i32 0, ptr %18, align 8, !tbaa !16
  %19 = load i8, ptr %6, align 1, !tbaa !9
  %20 = load ptr, ptr %8, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.IP6_ROUTE_ENTRY, ptr %20, i32 0, i32 3
  store i8 %19, ptr %21, align 4, !tbaa !17
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = icmp ne ptr %22, null
  br i1 %23, label %24, label %29

24:                                               ; preds = %14
  %25 = load ptr, ptr %8, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.IP6_ROUTE_ENTRY, ptr %25, i32 0, i32 4
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  %28 = call ptr @CopyMem(ptr noundef %26, ptr noundef %27, i64 noundef 16)
  br label %29

29:                                               ; preds = %24, %14
  %30 = load ptr, ptr %7, align 8, !tbaa !5
  %31 = icmp ne ptr %30, null
  br i1 %31, label %32, label %37

32:                                               ; preds = %29
  %33 = load ptr, ptr %8, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.IP6_ROUTE_ENTRY, ptr %33, i32 0, i32 5
  %35 = load ptr, ptr %7, align 8, !tbaa !5
  %36 = call ptr @CopyMem(ptr noundef %34, ptr noundef %35, i64 noundef 16)
  br label %37

37:                                               ; preds = %32, %29
  %38 = load ptr, ptr %8, align 8, !tbaa !5
  store ptr %38, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %39

39:                                               ; preds = %37, %13
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  %40 = load ptr, ptr %4, align 8
  ret ptr %40
}

declare ptr @AllocateZeroPool(i64 noundef) #2

declare ptr @CopyMem(ptr noundef, ptr noundef, i64 noundef) #2

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 = { "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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = !{!11, !13, i64 16}
!11 = !{!"", !12, i64 0, !13, i64 16, !14, i64 24, !7, i64 28, !15, i64 29, !15, i64 45}
!12 = !{!"_LIST_ENTRY", !6, i64 0, !6, i64 8}
!13 = !{!"long long", !7, i64 0}
!14 = !{!"int", !7, i64 0}
!15 = !{!"", !7, i64 0}
!16 = !{!11, !14, i64 24}
!17 = !{!11, !7, i64 28}


; 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 ptr @Ip6CreateRouteEntry(ptr noundef %0, i8 noundef zeroext %1, ptr noundef %2) local_unnamed_addr #0 {
  %4 = tail call ptr @AllocateZeroPool(i64 noundef 64) #2
  %5 = icmp eq ptr %4, null
  br i1 %5, label %17, label %6

6:                                                ; preds = %3
  %7 = getelementptr inbounds i8, ptr %4, i64 16
  store i64 1, ptr %7, align 8, !tbaa !5
  %8 = getelementptr inbounds i8, ptr %4, i64 24
  store i32 0, ptr %8, align 8, !tbaa !14
  %9 = getelementptr inbounds i8, ptr %4, i64 28
  store i8 %1, ptr %9, align 4, !tbaa !15
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %13, label %10

10:                                               ; preds = %6
  %11 = getelementptr inbounds i8, ptr %4, i64 29
  %12 = tail call ptr @CopyMem(ptr noundef nonnull %11, ptr noundef nonnull %0, i64 noundef 16) #2
  br label %13

13:                                               ; preds = %10, %6
  %.not15 = icmp eq ptr %2, null
  br i1 %.not15, label %17, label %14

14:                                               ; preds = %13
  %15 = getelementptr inbounds i8, ptr %4, i64 45
  %16 = tail call ptr @CopyMem(ptr noundef nonnull %15, ptr noundef nonnull %2, i64 noundef 16) #2
  br label %17

17:                                               ; preds = %13, %14, %3
  ret ptr %4
}

declare ptr @AllocateZeroPool(i64 noundef) local_unnamed_addr #1

declare ptr @CopyMem(ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #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 = { "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 }

!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, !11, i64 16}
!6 = !{!"", !7, i64 0, !11, i64 16, !12, i64 24, !9, i64 28, !13, i64 29, !13, i64 45}
!7 = !{!"_LIST_ENTRY", !8, i64 0, !8, i64 8}
!8 = !{!"any pointer", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}
!11 = !{!"long long", !9, i64 0}
!12 = !{!"int", !9, i64 0}
!13 = !{!"", !9, i64 0}
!14 = !{!6, !12, i64 24}
!15 = !{!6, !9, i64 28}


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