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

; 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.api_msg = type { ptr, i8, %union.anon }
%union.anon = type { %struct.anon.2 }
%struct.anon.2 = type { ptr, i16, i64, i64, i64, i8, i32 }
%struct.netconn = type { i32, i32, %union.anon.5, i8, ptr, ptr, ptr, i32, i32, i32, i8, ptr, ptr }
%union.anon.5 = type { ptr }

; 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 void @lwip_netconn_do_disconnect(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  store ptr %4, ptr %3, align 8, !tbaa !5
  %5 = load ptr, ptr %3, align 8, !tbaa !5
  %6 = getelementptr inbounds %struct.api_msg, ptr %5, i32 0, i32 0
  %7 = load ptr, ptr %6, align 8, !tbaa !9
  %8 = getelementptr inbounds %struct.netconn, ptr %7, i32 0, i32 0
  %9 = load i32, ptr %8, align 8, !tbaa !11
  %10 = and i32 %9, 240
  %11 = icmp eq i32 %10, 32
  br i1 %11, label %12, label %20

12:                                               ; preds = %1
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.api_msg, ptr %13, i32 0, i32 0
  %15 = load ptr, ptr %14, align 8, !tbaa !9
  %16 = getelementptr inbounds %struct.netconn, ptr %15, i32 0, i32 2
  %17 = load ptr, ptr %16, align 8, !tbaa !14
  call void @udp_disconnect(ptr noundef %17)
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.api_msg, ptr %18, i32 0, i32 1
  store i8 0, ptr %19, align 8, !tbaa !15
  br label %23

20:                                               ; preds = %1
  %21 = load ptr, ptr %3, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.api_msg, ptr %21, i32 0, i32 1
  store i8 -6, ptr %22, align 8, !tbaa !15
  br label %23

23:                                               ; preds = %20, %12
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  ret void
}

declare void @udp_disconnect(ptr 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 = !{!10, !6, i64 0}
!10 = !{!"api_msg", !6, i64 0, !7, i64 8, !7, i64 16}
!11 = !{!12, !13, i64 0}
!12 = !{!"netconn", !13, i64 0, !13, i64 4, !7, i64 8, !7, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !13, i64 48, !13, i64 52, !13, i64 56, !7, i64 60, !6, i64 64, !6, i64 72}
!13 = !{!"int", !7, i64 0}
!14 = !{!7, !7, i64 0}
!15 = !{!10, !7, 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 void @lwip_netconn_do_disconnect(ptr nocapture noundef %0) local_unnamed_addr #0 {
  %2 = load ptr, ptr %0, align 8, !tbaa !5
  %3 = load i32, ptr %2, align 8, !tbaa !10
  %4 = and i32 %3, 240
  %5 = icmp eq i32 %4, 32
  br i1 %5, label %6, label %9

6:                                                ; preds = %1
  %7 = getelementptr inbounds i8, ptr %2, i64 8
  %8 = load ptr, ptr %7, align 8, !tbaa !13
  tail call void @udp_disconnect(ptr noundef %8) #2
  br label %9

9:                                                ; preds = %1, %6
  %.sink = phi i8 [ 0, %6 ], [ -6, %1 ]
  %10 = getelementptr inbounds i8, ptr %0, i64 8
  store i8 %.sink, ptr %10, align 8
  ret void
}

declare void @udp_disconnect(ptr 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, !7, i64 0}
!6 = !{!"api_msg", !7, i64 0, !8, i64 8, !8, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!11, !12, i64 0}
!11 = !{!"netconn", !12, i64 0, !12, i64 4, !8, i64 8, !8, i64 16, !7, i64 24, !7, i64 32, !7, i64 40, !12, i64 48, !12, i64 52, !12, i64 56, !8, i64 60, !7, i64 64, !7, i64 72}
!12 = !{!"int", !8, i64 0}
!13 = !{!8, !8, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,MergedLoadStoreMotionPass,PostOrderFunctionAttrsPass,SROAPass,TailCallElimPass