; LLVM IR from Xiangyu-Hu/SPHinXsys :: src/shared/tools/tinyxml2.ll (ZNK8tinyxml211XMLDocument8DeepCopyEPS0_)

; 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"

; 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 nounwind uwtable
declare dso_local noundef ptr @_ZNK8tinyxml27XMLNode10FirstChildEv(ptr noundef nonnull align 8 dereferenceable(104)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK8tinyxml27XMLNode11NextSiblingEv(ptr noundef nonnull align 8 dereferenceable(104)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_ZNK8tinyxml27XMLNode9DeepCloneEPNS_11XMLDocumentE(ptr noundef nonnull align 8 dereferenceable(104), ptr noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_ZN8tinyxml27XMLNode14InsertEndChildEPS0_(ptr noundef nonnull align 8 dereferenceable(104), ptr noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN8tinyxml211XMLDocument5ClearEv(ptr noundef nonnull align 8 dereferenceable(776)) #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZNK8tinyxml211XMLDocument8DeepCopyEPS0_(ptr noundef nonnull align 8 dereferenceable(776) %0, ptr noundef %1) #2 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %6 = load ptr, ptr %3, align 8
  br label %7

7:                                                ; preds = %2
  br label %8

8:                                                ; preds = %7
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = icmp eq ptr %9, %6
  br i1 %10, label %11, label %12

11:                                               ; preds = %8
  br label %28

12:                                               ; preds = %8
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  call void @_ZN8tinyxml211XMLDocument5ClearEv(ptr noundef nonnull align 8 dereferenceable(776) %13)
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %14 = call noundef ptr @_ZNK8tinyxml27XMLNode10FirstChildEv(ptr noundef nonnull align 8 dereferenceable(104) %6)
  store ptr %14, ptr %5, align 8, !tbaa !5
  br label %15

15:                                               ; preds = %25, %12
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = icmp ne ptr %16, null
  br i1 %17, label %19, label %18

18:                                               ; preds = %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  br label %28

19:                                               ; preds = %15
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = load ptr, ptr %4, align 8, !tbaa !5
  %23 = call noundef ptr @_ZNK8tinyxml27XMLNode9DeepCloneEPNS_11XMLDocumentE(ptr noundef nonnull align 8 dereferenceable(104) %21, ptr noundef %22)
  %24 = call noundef ptr @_ZN8tinyxml27XMLNode14InsertEndChildEPS0_(ptr noundef nonnull align 8 dereferenceable(104) %20, ptr noundef %23)
  br label %25

25:                                               ; preds = %19
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = call noundef ptr @_ZNK8tinyxml27XMLNode11NextSiblingEv(ptr noundef nonnull align 8 dereferenceable(104) %26)
  store ptr %27, ptr %5, align 8, !tbaa !5
  br label %15, !llvm.loop !9

28:                                               ; preds = %18, %11
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; 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
declare dso_local noundef ptr @_ZNK8tinyxml27XMLNode10FirstChildEv(ptr noundef nonnull align 8 dereferenceable(104)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK8tinyxml27XMLNode11NextSiblingEv(ptr noundef nonnull align 8 dereferenceable(104)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_ZNK8tinyxml27XMLNode9DeepCloneEPNS_11XMLDocumentE(ptr noundef nonnull align 8 dereferenceable(104), ptr noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_ZN8tinyxml27XMLNode14InsertEndChildEPS0_(ptr noundef nonnull align 8 dereferenceable(104), ptr noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN8tinyxml211XMLDocument5ClearEv(ptr noundef nonnull align 8 dereferenceable(776)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZNK8tinyxml211XMLDocument8DeepCopyEPS0_(ptr noundef nonnull align 8 dereferenceable(776) %0, ptr noundef %1) local_unnamed_addr #1 align 2 {
  %3 = icmp eq ptr %1, %0
  br i1 %3, label %.loopexit, label %4

4:                                                ; preds = %2
  tail call void @_ZN8tinyxml211XMLDocument5ClearEv(ptr noundef nonnull align 8 dereferenceable(776) %1)
  %5 = tail call noundef ptr @_ZNK8tinyxml27XMLNode10FirstChildEv(ptr noundef nonnull align 8 dereferenceable(104) %0)
  %.not10 = icmp eq ptr %5, null
  br i1 %.not10, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %4, %.lr.ph
  %.011 = phi ptr [ %8, %.lr.ph ], [ %5, %4 ]
  %6 = tail call noundef ptr @_ZNK8tinyxml27XMLNode9DeepCloneEPNS_11XMLDocumentE(ptr noundef nonnull align 8 dereferenceable(104) %.011, ptr noundef nonnull %1)
  %7 = tail call noundef ptr @_ZN8tinyxml27XMLNode14InsertEndChildEPS0_(ptr noundef nonnull align 8 dereferenceable(104) %1, ptr noundef %6)
  %8 = tail call noundef ptr @_ZNK8tinyxml27XMLNode11NextSiblingEv(ptr noundef nonnull align 8 dereferenceable(104) %.011)
  %.not = icmp eq ptr %8, null
  br i1 %.not, label %.loopexit, label %.lr.ph, !llvm.loop !5

.loopexit:                                        ; preds = %.lr.ph, %4, %2
  ret void
}

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" }
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" }

!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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass