; LLVM IR from whoiswelliton/Computer_Engineering_UTFPR-PB :: Embedded_Systems/TIVA Connected TM4C1294XL Projects/01 - lwIP_HTTPServer_on_TIVA (ntop)

; 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"

@errno = external global i32, align 4

; 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 @lwip_inet_ntop(i32 noundef %0, ptr noundef %1, ptr noundef %2, i32 noundef %3) #1 {
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  store i32 %0, ptr %6, align 4, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !9
  store ptr %2, ptr %8, align 8, !tbaa !9
  store i32 %3, ptr %9, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  store ptr null, ptr %10, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  %13 = load i32, ptr %9, align 4, !tbaa !5
  store i32 %13, ptr %11, align 4, !tbaa !5
  %14 = load i32, ptr %11, align 4, !tbaa !5
  %15 = icmp slt i32 %14, 0
  br i1 %15, label %16, label %20

16:                                               ; preds = %4
  br label %17

17:                                               ; preds = %16
  store i32 28, ptr @errno, align 4, !tbaa !5
  br label %18

18:                                               ; preds = %17
  br label %19

19:                                               ; preds = %18
  store ptr null, ptr %5, align 8
  store i32 1, ptr %12, align 4
  br label %40

20:                                               ; preds = %4
  %21 = load i32, ptr %6, align 4, !tbaa !5
  switch i32 %21, label %34 [
    i32 2, label %22
  ]

22:                                               ; preds = %20
  %23 = load ptr, ptr %7, align 8, !tbaa !9
  %24 = load ptr, ptr %8, align 8, !tbaa !9
  %25 = load i32, ptr %11, align 4, !tbaa !5
  %26 = call ptr @ip4addr_ntoa_r(ptr noundef %23, ptr noundef %24, i32 noundef %25)
  store ptr %26, ptr %10, align 8, !tbaa !9
  %27 = load ptr, ptr %10, align 8, !tbaa !9
  %28 = icmp eq ptr %27, null
  br i1 %28, label %29, label %33

29:                                               ; preds = %22
  br label %30

30:                                               ; preds = %29
  store i32 28, ptr @errno, align 4, !tbaa !5
  br label %31

31:                                               ; preds = %30
  br label %32

32:                                               ; preds = %31
  br label %33

33:                                               ; preds = %32, %22
  br label %38

34:                                               ; preds = %20
  br label %35

35:                                               ; preds = %34
  store i32 97, ptr @errno, align 4, !tbaa !5
  br label %36

36:                                               ; preds = %35
  br label %37

37:                                               ; preds = %36
  br label %38

38:                                               ; preds = %37, %33
  %39 = load ptr, ptr %10, align 8, !tbaa !9
  store ptr %39, ptr %5, align 8
  store i32 1, ptr %12, align 4
  br label %40

40:                                               ; preds = %38, %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  %41 = load ptr, ptr %5, align 8
  ret ptr %41
}

declare ptr @ip4addr_ntoa_r(ptr noundef, ptr noundef, i32 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}


; 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"

@errno = external local_unnamed_addr global i32, align 4

; Function Attrs: nounwind uwtable
define dso_local ptr @lwip_inet_ntop(i32 noundef %0, ptr noundef %1, ptr noundef %2, i32 noundef %3) local_unnamed_addr #0 {
  %5 = icmp slt i32 %3, 0
  br i1 %5, label %.sink.split, label %6

6:                                                ; preds = %4
  %cond = icmp eq i32 %0, 2
  br i1 %cond, label %7, label %.sink.split

7:                                                ; preds = %6
  %8 = tail call ptr @ip4addr_ntoa_r(ptr noundef %1, ptr noundef %2, i32 noundef %3) #2
  %9 = icmp eq ptr %8, null
  br i1 %9, label %.sink.split, label %10

.sink.split:                                      ; preds = %6, %7, %4
  %.sink = phi i32 [ 28, %4 ], [ 28, %7 ], [ 97, %6 ]
  store i32 %.sink, ptr @errno, align 4, !tbaa !5
  br label %10

10:                                               ; preds = %.sink.split, %7
  %.0 = phi ptr [ %8, %7 ], [ null, %.sink.split ]
  ret ptr %.0
}

declare ptr @ip4addr_ntoa_r(ptr noundef, ptr noundef, i32 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, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


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