; LLVM IR from Xiangyu-Hu/SPHinXsys :: src/shared/tools/tinyxml2.ll (ZNK8tinyxml27XMLNode19InsertChildPreambleEPS0_)

; 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.tinyxml2::XMLNode" = type { ptr, ptr, ptr, %"class.tinyxml2::StrPair", i32, ptr, ptr, ptr, ptr, ptr, ptr }
%"class.tinyxml2::StrPair" = type { i32, ptr, ptr }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN8tinyxml27XMLNode6UnlinkEPS0_(ptr noundef nonnull align 8 dereferenceable(104), ptr noundef) #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZNK8tinyxml27XMLNode19InsertChildPreambleEPS0_(ptr noundef nonnull align 8 dereferenceable(104) %0, ptr noundef %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %5 = load ptr, ptr %3, align 8
  br label %6

6:                                                ; preds = %2
  br label %7

7:                                                ; preds = %6
  br label %8

8:                                                ; preds = %7
  br label %9

9:                                                ; preds = %8
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = getelementptr inbounds %"class.tinyxml2::XMLNode", ptr %10, i32 0, i32 2
  %12 = load ptr, ptr %11, align 8, !tbaa !9
  %13 = icmp ne ptr %12, null
  br i1 %13, label %14, label %19

14:                                               ; preds = %9
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds %"class.tinyxml2::XMLNode", ptr %15, i32 0, i32 2
  %17 = load ptr, ptr %16, align 8, !tbaa !9
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  call void @_ZN8tinyxml27XMLNode6UnlinkEPS0_(ptr noundef nonnull align 8 dereferenceable(104) %17, ptr noundef %18)
  br label %30

19:                                               ; preds = %9
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = getelementptr inbounds %"class.tinyxml2::XMLNode", ptr %20, i32 0, i32 1
  %22 = load ptr, ptr %21, align 8, !tbaa !13
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  call void @_ZN8tinyxml211XMLDocument9MarkInUseEPKNS_7XMLNodeE(ptr noundef nonnull align 8 dereferenceable(776) %22, ptr noundef %23)
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = getelementptr inbounds %"class.tinyxml2::XMLNode", ptr %24, i32 0, i32 10
  %26 = load ptr, ptr %25, align 8, !tbaa !14
  %27 = load ptr, ptr %26, align 8, !tbaa !15
  %28 = getelementptr inbounds ptr, ptr %27, i64 5
  %29 = load ptr, ptr %28, align 8
  call void %29(ptr noundef nonnull align 8 dereferenceable(8) %26)
  br label %30

30:                                               ; preds = %19, %14
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN8tinyxml211XMLDocument9MarkInUseEPKNS_7XMLNodeE(ptr noundef nonnull align 8 dereferenceable(776), ptr noundef) #1 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" }
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 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 16}
!10 = !{!"_ZTSN8tinyxml27XMLNodeE", !6, i64 8, !6, i64 16, !11, i64 24, !12, i64 48, !6, i64 56, !6, i64 64, !6, i64 72, !6, i64 80, !6, i64 88, !6, i64 96}
!11 = !{!"_ZTSN8tinyxml27StrPairE", !12, i64 0, !6, i64 8, !6, i64 16}
!12 = !{!"int", !7, i64 0}
!13 = !{!10, !6, i64 8}
!14 = !{!10, !6, i64 96}
!15 = !{!16, !16, i64 0}
!16 = !{!"vtable pointer", !8, 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
declare dso_local void @_ZN8tinyxml27XMLNode6UnlinkEPS0_(ptr noundef nonnull align 8 dereferenceable(104), ptr noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZNK8tinyxml27XMLNode19InsertChildPreambleEPS0_(ptr nocapture noundef nonnull readnone align 8 dereferenceable(104) %0, ptr noundef %1) local_unnamed_addr #1 align 2 {
  %3 = getelementptr inbounds i8, ptr %1, i64 16
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %.not = icmp eq ptr %4, null
  br i1 %.not, label %6, label %5

5:                                                ; preds = %2
  tail call void @_ZN8tinyxml27XMLNode6UnlinkEPS0_(ptr noundef nonnull align 8 dereferenceable(104) %4, ptr noundef nonnull %1)
  br label %14

6:                                                ; preds = %2
  %7 = getelementptr inbounds i8, ptr %1, i64 8
  %8 = load ptr, ptr %7, align 8, !tbaa !12
  tail call void @_ZN8tinyxml211XMLDocument9MarkInUseEPKNS_7XMLNodeE(ptr noundef nonnull align 8 dereferenceable(776) %8, ptr noundef nonnull %1)
  %9 = getelementptr inbounds i8, ptr %1, i64 96
  %10 = load ptr, ptr %9, align 8, !tbaa !13
  %11 = load ptr, ptr %10, align 8, !tbaa !14
  %12 = getelementptr inbounds i8, ptr %11, i64 40
  %13 = load ptr, ptr %12, align 8
  tail call void %13(ptr noundef nonnull align 8 dereferenceable(8) %10)
  br label %14

14:                                               ; preds = %6, %5
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN8tinyxml211XMLDocument9MarkInUseEPKNS_7XMLNodeE(ptr noundef nonnull align 8 dereferenceable(776), ptr noundef) local_unnamed_addr #1 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" }
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 = !{!6, !7, i64 16}
!6 = !{!"_ZTSN8tinyxml27XMLNodeE", !7, i64 8, !7, i64 16, !10, i64 24, !11, i64 48, !7, i64 56, !7, i64 64, !7, i64 72, !7, i64 80, !7, i64 88, !7, i64 96}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"_ZTSN8tinyxml27StrPairE", !11, i64 0, !7, i64 8, !7, i64 16}
!11 = !{!"int", !8, i64 0}
!12 = !{!6, !7, i64 8}
!13 = !{!6, !7, i64 96}
!14 = !{!15, !15, i64 0}
!15 = !{!"vtable pointer", !9, i64 0}


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