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

; 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.anon.4 = type { i8, i32 }

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

; Function Attrs: nounwind uwtable
declare hidden signext i8 @netconn_apimsg(ptr noundef, ptr noundef) #1

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

9:                                                ; preds = %1
  store i8 0, ptr %2, align 1
  store i32 1, ptr %6, align 4
  br label %23

10:                                               ; preds = %1
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.api_msg, ptr %5, i32 0, i32 0
  store ptr %11, ptr %12, align 8, !tbaa !9
  %13 = call i32 @sys_now()
  %14 = getelementptr inbounds %struct.api_msg, ptr %5, i32 0, i32 2
  %15 = getelementptr inbounds %struct.anon.4, ptr %14, i32 0, i32 1
  store i32 %13, ptr %15, align 4, !tbaa !11
  %16 = call signext i8 @netconn_apimsg(ptr noundef @lwip_netconn_do_delconn, ptr noundef %5)
  store i8 %16, ptr %4, align 1, !tbaa !11
  %17 = load i8, ptr %4, align 1, !tbaa !11
  %18 = sext i8 %17 to i32
  %19 = icmp ne i32 %18, 0
  br i1 %19, label %20, label %22

20:                                               ; preds = %10
  %21 = load i8, ptr %4, align 1, !tbaa !11
  store i8 %21, ptr %2, align 1
  store i32 1, ptr %6, align 4
  br label %23

22:                                               ; preds = %10
  store i8 0, ptr %2, align 1
  store i32 1, ptr %6, align 4
  br label %23

23:                                               ; preds = %22, %20, %9
  call void @llvm.lifetime.end.p0(i64 64, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %4) #3
  %24 = load i8, ptr %2, align 1
  ret i8 %24
}

declare i32 @sys_now() #2

declare void @lwip_netconn_do_delconn(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 = !{!7, !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"

%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 }

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

; Function Attrs: nounwind uwtable
declare hidden signext i8 @netconn_apimsg(ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: mustprogress 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 signext i8 @netconn_prepare_delete(ptr noundef %0) local_unnamed_addr #1 {
  %2 = alloca %struct.api_msg, align 8
  call void @llvm.lifetime.start.p0(i64 64, ptr nonnull %2) #3
  %3 = icmp eq ptr %0, null
  br i1 %3, label %8, label %4

4:                                                ; preds = %1
  store ptr %0, ptr %2, align 8, !tbaa !5
  %5 = tail call i32 @sys_now() #3
  %6 = getelementptr inbounds i8, ptr %2, i64 20
  store i32 %5, ptr %6, align 4, !tbaa !10
  %7 = call signext i8 @netconn_apimsg(ptr noundef nonnull @lwip_netconn_do_delconn, ptr noundef nonnull %2)
  br label %8

8:                                                ; preds = %4, %1
  %.0 = phi i8 [ 0, %1 ], [ %7, %4 ]
  call void @llvm.lifetime.end.p0(i64 64, ptr nonnull %2) #3
  ret i8 %.0
}

declare i32 @sys_now() local_unnamed_addr #2

declare void @lwip_netconn_do_delconn(ptr noundef) #2

attributes #0 = { mustprogress 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, !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 = !{!8, !8, i64 0}


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