; 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.udp_pcb = type { %struct.ip4_addr, %struct.ip4_addr, i8, i8, i8, i8, ptr, i8, i16, i16, ptr, ptr }
%struct.ip4_addr = type { i32 }

@.str = external hidden unnamed_addr constant [40 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [178 x i8], align 1
@.str.23 = external hidden unnamed_addr constant [28 x i8], align 1

declare i32 @printf(ptr noundef, ...) #0

; Function Attrs: nounwind uwtable
define dso_local void @udp_disconnect(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  br label %3

3:                                                ; preds = %1
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = icmp ne ptr %4, null
  br i1 %5, label %10, label %6

6:                                                ; preds = %3
  br label %7

7:                                                ; preds = %6
  %8 = call i32 (ptr, ...) @printf(ptr noundef @.str, ptr noundef @.str.23, i32 noundef 1130, ptr noundef @.str.2)
  br label %9

9:                                                ; preds = %7
  br label %28

10:                                               ; preds = %3
  br label %11

11:                                               ; preds = %10
  %12 = load ptr, ptr %2, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.udp_pcb, ptr %12, i32 0, i32 1
  %14 = getelementptr inbounds %struct.ip4_addr, ptr %13, i32 0, i32 0
  store i32 0, ptr %14, align 4, !tbaa !9
  %15 = load ptr, ptr %2, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.udp_pcb, ptr %15, i32 0, i32 9
  store i16 0, ptr %16, align 4, !tbaa !14
  %17 = load ptr, ptr %2, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.udp_pcb, ptr %17, i32 0, i32 2
  store i8 0, ptr %18, align 8, !tbaa !15
  br label %19

19:                                               ; preds = %11
  %20 = load ptr, ptr %2, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.udp_pcb, ptr %20, i32 0, i32 7
  %22 = load i8, ptr %21, align 8, !tbaa !16
  %23 = zext i8 %22 to i32
  %24 = and i32 %23, 251
  %25 = trunc i32 %24 to i8
  %26 = load ptr, ptr %2, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.udp_pcb, ptr %26, i32 0, i32 7
  store i8 %25, ptr %27, align 8, !tbaa !16
  br label %28

28:                                               ; preds = %19, %9
  ret void
}

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 = { 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" }

!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, !12, i64 4}
!10 = !{!"udp_pcb", !11, i64 0, !11, i64 4, !7, i64 8, !7, i64 9, !7, i64 10, !7, i64 11, !6, i64 16, !7, i64 24, !13, i64 26, !13, i64 28, !6, i64 32, !6, i64 40}
!11 = !{!"ip4_addr", !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!"short", !7, i64 0}
!14 = !{!10, !13, i64 28}
!15 = !{!10, !7, i64 8}
!16 = !{!10, !7, i64 24}


; 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"

@.str = external hidden unnamed_addr constant [40 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [178 x i8], align 1
@.str.23 = external hidden unnamed_addr constant [28 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; Function Attrs: nofree nounwind uwtable
define dso_local void @udp_disconnect(ptr noundef %0) local_unnamed_addr #1 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %2, label %4

2:                                                ; preds = %1
  %3 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, ptr noundef nonnull @.str.23, i32 noundef 1130, ptr noundef nonnull @.str.2)
  br label %11

4:                                                ; preds = %1
  %5 = getelementptr inbounds i8, ptr %0, i64 4
  store i32 0, ptr %5, align 4, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %0, i64 28
  store i16 0, ptr %6, align 4, !tbaa !13
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  store i8 0, ptr %7, align 8, !tbaa !14
  %8 = getelementptr inbounds i8, ptr %0, i64 24
  %9 = load i8, ptr %8, align 8, !tbaa !15
  %10 = and i8 %9, -5
  store i8 %10, ptr %8, align 8, !tbaa !15
  br label %11

11:                                               ; preds = %4, %2
  ret void
}

attributes #0 = { 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 #1 = { nofree 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" }

!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, !8, i64 4}
!6 = !{!"udp_pcb", !7, i64 0, !7, i64 4, !9, i64 8, !9, i64 9, !9, i64 10, !9, i64 11, !11, i64 16, !9, i64 24, !12, i64 26, !12, i64 28, !11, i64 32, !11, i64 40}
!7 = !{!"ip4_addr", !8, i64 0}
!8 = !{!"int", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}
!11 = !{!"any pointer", !9, i64 0}
!12 = !{!"short", !9, i64 0}
!13 = !{!6, !12, i64 28}
!14 = !{!6, !9, i64 8}
!15 = !{!6, !9, i64 24}


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