; LLVM IR from chensoft/libsocket :: lib/libchen/src/data/json.ll (ZN4chen4jsonaSEOS0_)

; 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"

%"union.chen::json::Data" = type { ptr }
%"class.chen::json" = type { i32, %"union.chen::json::Data" }

; 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 noundef nonnull align 8 dereferenceable(16) ptr @_ZN4chen4jsonaSEOS0_(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef nonnull align 8 dereferenceable(16) %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca %"union.chen::json::Data", align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %7 = load ptr, ptr %4, align 8
  %8 = load ptr, ptr %5, align 8, !tbaa !5
  %9 = icmp eq ptr %7, %8
  br i1 %9, label %10, label %11

10:                                               ; preds = %2
  store ptr %7, ptr %3, align 8
  br label %23

11:                                               ; preds = %2
  call void @_ZN4chen4json5clearEv(ptr noundef nonnull align 8 dereferenceable(16) %7)
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  %13 = getelementptr inbounds %"class.chen::json", ptr %12, i32 0, i32 0
  %14 = load i32, ptr %13, align 8, !tbaa !9
  %15 = getelementptr inbounds %"class.chen::json", ptr %7, i32 0, i32 0
  store i32 %14, ptr %15, align 8, !tbaa !9
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = getelementptr inbounds %"class.chen::json", ptr %16, i32 0, i32 1
  %18 = getelementptr inbounds %"class.chen::json", ptr %7, i32 0, i32 1
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %18, ptr align 8 %17, i64 8, i1 false), !tbaa.struct !12
  %19 = load ptr, ptr %5, align 8, !tbaa !5
  %20 = getelementptr inbounds %"class.chen::json", ptr %19, i32 0, i32 0
  store i32 0, ptr %20, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  store ptr null, ptr %6, align 8, !tbaa !13
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = getelementptr inbounds %"class.chen::json", ptr %21, i32 0, i32 1
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %22, ptr align 8 %6, i64 8, i1 false), !tbaa.struct !12
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  store ptr %7, ptr %3, align 8
  br label %23

23:                                               ; preds = %11, %10
  %24 = load ptr, ptr %3, align 8
  ret ptr %24
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN4chen4json5clearEv(ptr noundef nonnull align 8 dereferenceable(16)) #2 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #3

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 = { mustprogress 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 #3 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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, !11, i64 0}
!10 = !{!"_ZTSN4chen4jsonE", !11, i64 0, !7, i64 8}
!11 = !{!"_ZTSN4chen4json4TypeE", !7, i64 0}
!12 = !{i64 0, i64 8, !13}
!13 = !{!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"

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZN4chen4jsonaSEOS0_(ptr noundef nonnull returned align 8 dereferenceable(16) %0, ptr noundef nonnull align 8 dereferenceable(16) %1) local_unnamed_addr #0 align 2 {
  %3 = icmp eq ptr %0, %1
  br i1 %3, label %9, label %4

4:                                                ; preds = %2
  tail call void @_ZN4chen4json5clearEv(ptr noundef nonnull align 8 dereferenceable(16) %0)
  %5 = load i32, ptr %1, align 8, !tbaa !5
  store i32 %5, ptr %0, align 8, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %1, i64 8
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  %8 = load i64, ptr %6, align 8, !tbaa !10
  store i64 %8, ptr %7, align 8, !tbaa !10
  store i32 0, ptr %1, align 8, !tbaa !5
  store ptr null, ptr %6, align 8, !tbaa !10
  br label %9

9:                                                ; preds = %2, %4
  ret ptr %0
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN4chen4json5clearEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #0 align 2

attributes #0 = { mustprogress 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, !7, i64 0}
!6 = !{!"_ZTSN4chen4jsonE", !7, i64 0, !8, i64 8}
!7 = !{!"_ZTSN4chen4json4TypeE", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!8, !8, i64 0}


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