; LLVM IR from RemHero/ReUp-DateBase-Raft :: layer3/ossSocket.ll (ZN10_ossSocket5closeEv)

; 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"

%class._ossSocket = type { i32, i32, i32, %struct.sockaddr_in, %struct.sockaddr_in, i8, i32 }
%struct.sockaddr_in = type { i16, i16, %struct.in_addr, [8 x i8] }
%struct.in_addr = type { i32 }

; 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: mustprogress uwtable
define dso_local void @_ZN10_ossSocket5closeEv(ptr noundef nonnull align 4 dereferenceable(52) %0) #1 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8
  %5 = getelementptr inbounds %class._ossSocket, ptr %4, i32 0, i32 5
  %6 = load i8, ptr %5, align 4, !tbaa !9, !range !16, !noundef !17
  %7 = trunc i8 %6 to i1
  br i1 %7, label %8, label %17

8:                                                ; preds = %1
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 0, ptr %3, align 4, !tbaa !18
  %9 = getelementptr inbounds %class._ossSocket, ptr %4, i32 0, i32 0
  %10 = load i32, ptr %9, align 4, !tbaa !19
  %11 = call i32 @close(i32 noundef %10)
  store i32 %11, ptr %3, align 4, !tbaa !18
  %12 = load i32, ptr %3, align 4, !tbaa !18
  %13 = icmp slt i32 %12, 0
  br i1 %13, label %14, label %15

14:                                               ; preds = %8
  store i32 -1, ptr %3, align 4, !tbaa !18
  br label %15

15:                                               ; preds = %14, %8
  %16 = getelementptr inbounds %class._ossSocket, ptr %4, i32 0, i32 5
  store i8 0, ptr %16, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  br label %17

17:                                               ; preds = %15, %1
  ret void
}

declare i32 @close(i32 noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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++ TBAA"}
!9 = !{!10, !15, i64 44}
!10 = !{!"_ZTS10_ossSocket", !11, i64 0, !11, i64 4, !11, i64 8, !12, i64 12, !12, i64 28, !15, i64 44, !11, i64 48}
!11 = !{!"int", !7, i64 0}
!12 = !{!"_ZTS11sockaddr_in", !13, i64 0, !13, i64 2, !14, i64 4, !7, i64 8}
!13 = !{!"short", !7, i64 0}
!14 = !{!"_ZTS7in_addr", !11, i64 0}
!15 = !{!"bool", !7, i64 0}
!16 = !{i8 0, i8 2}
!17 = !{}
!18 = !{!11, !11, i64 0}
!19 = !{!10, !11, 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"

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN10_ossSocket5closeEv(ptr nocapture noundef nonnull align 4 dereferenceable(52) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 44
  %3 = load i8, ptr %2, align 4, !tbaa !5, !range !14, !noundef !15
  %4 = trunc nuw i8 %3 to i1
  br i1 %4, label %5, label %8

5:                                                ; preds = %1
  %6 = load i32, ptr %0, align 4, !tbaa !16
  %7 = tail call i32 @close(i32 noundef %6)
  store i8 0, ptr %2, align 4, !tbaa !5
  br label %8

8:                                                ; preds = %5, %1
  ret void
}

declare i32 @close(i32 noundef) local_unnamed_addr #1

attributes #0 = { mustprogress 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" }

!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, !13, i64 44}
!6 = !{!"_ZTS10_ossSocket", !7, i64 0, !7, i64 4, !7, i64 8, !10, i64 12, !10, i64 28, !13, i64 44, !7, i64 48}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"_ZTS11sockaddr_in", !11, i64 0, !11, i64 2, !12, i64 4, !8, i64 8}
!11 = !{!"short", !8, i64 0}
!12 = !{!"_ZTS7in_addr", !7, i64 0}
!13 = !{!"bool", !8, i64 0}
!14 = !{i8 0, i8 2}
!15 = !{}
!16 = !{!6, !7, i64 0}


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