; LLVM IR from thuhcsi/Crystal.TTVS :: TinyXML/tinyxml.ll (ZNK13TiXmlDocument9StreamOutEP14TiXmlOutStream)

; 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 @_ZNK9TiXmlNode10FirstChildEv(ptr noundef nonnull align 8 dereferenceable(96)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK9TiXmlNode11NextSiblingEv(ptr noundef nonnull align 8 dereferenceable(96)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK9TiXmlNode9ToElementEv(ptr noundef nonnull align 8 dereferenceable(96)) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZNK13TiXmlDocument9StreamOutEP14TiXmlOutStream(ptr noundef nonnull align 8 dereferenceable(140) %0, ptr noundef %1) unnamed_addr #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
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %7 = call noundef ptr @_ZNK9TiXmlNode10FirstChildEv(ptr noundef nonnull align 8 dereferenceable(96) %6)
  store ptr %7, ptr %5, align 8, !tbaa !5
  br label %8

8:                                                ; preds = %22, %2
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = icmp ne ptr %9, null
  br i1 %10, label %11, label %25

11:                                               ; preds = %8
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = load ptr, ptr %12, align 8, !tbaa !9
  %15 = getelementptr inbounds ptr, ptr %14, i64 4
  %16 = load ptr, ptr %15, align 8
  call void %16(ptr noundef nonnull align 8 dereferenceable(24) %12, ptr noundef %13)
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = call noundef ptr @_ZNK9TiXmlNode9ToElementEv(ptr noundef nonnull align 8 dereferenceable(96) %17)
  %19 = icmp ne ptr %18, null
  br i1 %19, label %20, label %21

20:                                               ; preds = %11
  br label %25

21:                                               ; preds = %11
  br label %22

22:                                               ; preds = %21
  %23 = load ptr, ptr %5, align 8, !tbaa !5
  %24 = call noundef ptr @_ZNK9TiXmlNode11NextSiblingEv(ptr noundef nonnull align 8 dereferenceable(96) %23)
  store ptr %24, ptr %5, align 8, !tbaa !5
  br label %8, !llvm.loop !11

25:                                               ; preds = %20, %8
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  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 = !{!10, !10, i64 0}
!10 = !{!"vtable pointer", !8, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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 @_ZNK9TiXmlNode10FirstChildEv(ptr noundef nonnull align 8 dereferenceable(96)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK9TiXmlNode11NextSiblingEv(ptr noundef nonnull align 8 dereferenceable(96)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK9TiXmlNode9ToElementEv(ptr noundef nonnull align 8 dereferenceable(96)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZNK13TiXmlDocument9StreamOutEP14TiXmlOutStream(ptr noundef nonnull align 8 dereferenceable(140) %0, ptr noundef %1) unnamed_addr #1 align 2 {
  %3 = tail call noundef ptr @_ZNK9TiXmlNode10FirstChildEv(ptr noundef nonnull align 8 dereferenceable(96) %0)
  %.not7 = icmp eq ptr %3, null
  br i1 %.not7, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %8
  %.08 = phi ptr [ %9, %8 ], [ %3, %2 ]
  %4 = load ptr, ptr %.08, align 8, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %4, i64 32
  %6 = load ptr, ptr %5, align 8
  tail call void %6(ptr noundef nonnull align 8 dereferenceable(24) %.08, ptr noundef %1)
  %7 = tail call noundef ptr @_ZNK9TiXmlNode9ToElementEv(ptr noundef nonnull align 8 dereferenceable(96) %.08)
  %.not6 = icmp eq ptr %7, null
  br i1 %.not6, label %8, label %._crit_edge

8:                                                ; preds = %.lr.ph
  %9 = tail call noundef ptr @_ZNK9TiXmlNode11NextSiblingEv(ptr noundef nonnull align 8 dereferenceable(96) %.08)
  %.not = icmp eq ptr %9, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !8

._crit_edge:                                      ; preds = %8, %.lr.ph, %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 = !{!6, !6, i64 0}
!6 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


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