; LLVM IR from kala13x/libxutils :: src/data (buf)

; 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.XByteBuffer = type { ptr, i64, i64, i16, i16, 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: nounwind uwtable
declare dso_local void @XByteBuffer_Clear(ptr noundef) #1

; Function Attrs: nounwind
declare void @free(ptr noundef) #2

; Function Attrs: nounwind uwtable
define dso_local void @XByteBuffer_Free(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = icmp ne ptr %4, null
  br i1 %5, label %6, label %10

6:                                                ; preds = %1
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = load ptr, ptr %7, align 8, !tbaa !5
  %9 = icmp ne ptr %8, null
  br i1 %9, label %11, label %10

10:                                               ; preds = %6, %1
  br label %23

11:                                               ; preds = %6
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %12 = load ptr, ptr %2, align 8, !tbaa !5
  %13 = load ptr, ptr %12, align 8, !tbaa !5
  store ptr %13, ptr %3, align 8, !tbaa !5
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  call void @XByteBuffer_Clear(ptr noundef %14)
  %15 = load ptr, ptr %3, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.XByteBuffer, ptr %15, i32 0, i32 3
  %17 = load i16, ptr %16, align 8, !tbaa !9
  %18 = icmp ne i16 %17, 0
  br i1 %18, label %19, label %22

19:                                               ; preds = %11
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  call void @free(ptr noundef %20) #3
  %21 = load ptr, ptr %2, align 8, !tbaa !5
  store ptr null, ptr %21, align 8, !tbaa !5
  br label %22

22:                                               ; preds = %19, %11
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  br label %23

23:                                               ; preds = %22, %10
  ret void
}

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 = { 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 #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, !12, i64 24}
!10 = !{!"XByteBuffer", !6, i64 0, !11, i64 8, !11, i64 16, !12, i64 24, !12, i64 26, !13, i64 28}
!11 = !{!"long", !7, i64 0}
!12 = !{!"short", !7, i64 0}
!13 = !{!"int", !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"

; Function Attrs: nounwind uwtable
declare dso_local void @XByteBuffer_Clear(ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local void @XByteBuffer_Free(ptr noundef %0) local_unnamed_addr #0 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %8, label %2

2:                                                ; preds = %1
  %3 = load ptr, ptr %0, align 8, !tbaa !5
  %.not8 = icmp eq ptr %3, null
  br i1 %.not8, label %8, label %4

4:                                                ; preds = %2
  tail call void @XByteBuffer_Clear(ptr noundef nonnull %3)
  %5 = getelementptr inbounds i8, ptr %3, i64 24
  %6 = load i16, ptr %5, align 8, !tbaa !9
  %.not9 = icmp eq i16 %6, 0
  br i1 %.not9, label %8, label %7

7:                                                ; preds = %4
  tail call void @free(ptr noundef nonnull %3) #2
  store ptr null, ptr %0, align 8, !tbaa !5
  br label %8

8:                                                ; preds = %4, %7, %1, %2
  ret void
}

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 = { mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !12, i64 24}
!10 = !{!"XByteBuffer", !6, i64 0, !11, i64 8, !11, i64 16, !12, i64 24, !12, i64 26, !13, i64 28}
!11 = !{!"long", !7, i64 0}
!12 = !{!"short", !7, i64 0}
!13 = !{!"int", !7, i64 0}


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