; LLVM IR from HiroIshida/tinyfk :: urdf_parser/tinyxml/tinyxml.ll (ZNK11TiXmlHandle10FirstChildEPKc)

; 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.TiXmlHandle = type { ptr }

; 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 void @_ZN11TiXmlHandleC2EP9TiXmlNode(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZNK11TiXmlHandle10FirstChildEPKc(ptr dead_on_unwind noalias writable sret(%class.TiXmlHandle) align 8 %0, ptr noundef nonnull align 8 dereferenceable(8) %1, ptr noundef %2) #2 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  %9 = load ptr, ptr %5, align 8
  %10 = getelementptr inbounds %class.TiXmlHandle, ptr %9, i32 0, i32 0
  %11 = load ptr, ptr %10, align 8, !tbaa !9
  %12 = icmp ne ptr %11, null
  br i1 %12, label %13, label %26

13:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %14 = getelementptr inbounds %class.TiXmlHandle, ptr %9, i32 0, i32 0
  %15 = load ptr, ptr %14, align 8, !tbaa !9
  %16 = load ptr, ptr %6, align 8, !tbaa !5
  %17 = call noundef ptr @_ZN9TiXmlNode10FirstChildEPKc(ptr noundef nonnull align 8 dereferenceable(104) %15, ptr noundef %16)
  store ptr %17, ptr %7, align 8, !tbaa !5
  %18 = load ptr, ptr %7, align 8, !tbaa !5
  %19 = icmp ne ptr %18, null
  br i1 %19, label %20, label %22

20:                                               ; preds = %13
  %21 = load ptr, ptr %7, align 8, !tbaa !5
  call void @_ZN11TiXmlHandleC2EP9TiXmlNode(ptr noundef nonnull align 8 dereferenceable(8) %0, ptr noundef %21)
  store i32 1, ptr %8, align 4
  br label %23

22:                                               ; preds = %13
  store i32 0, ptr %8, align 4
  br label %23

23:                                               ; preds = %22, %20
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  %24 = load i32, ptr %8, align 4
  switch i32 %24, label %28 [
    i32 0, label %25
    i32 1, label %27
  ]

25:                                               ; preds = %23
  br label %26

26:                                               ; preds = %25, %3
  call void @_ZN11TiXmlHandleC2EP9TiXmlNode(ptr noundef nonnull align 8 dereferenceable(8) %0, ptr noundef null)
  br label %27

27:                                               ; preds = %26, %23
  ret void

28:                                               ; preds = %23
  unreachable
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_ZN9TiXmlNode10FirstChildEPKc(ptr noundef nonnull align 8 dereferenceable(104), ptr noundef) #2 align 2

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, !6, i64 0}
!10 = !{!"_ZTS11TiXmlHandle", !6, 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"

%class.TiXmlHandle = type { ptr }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN11TiXmlHandleC2EP9TiXmlNode(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZNK11TiXmlHandle10FirstChildEPKc(ptr dead_on_unwind noalias writable sret(%class.TiXmlHandle) align 8 %0, ptr nocapture noundef nonnull readonly align 8 dereferenceable(8) %1, ptr noundef %2) local_unnamed_addr #1 align 2 {
  %4 = load ptr, ptr %1, align 8, !tbaa !5
  %.not = icmp eq ptr %4, null
  br i1 %.not, label %.thread, label %5

5:                                                ; preds = %3
  %6 = tail call noundef ptr @_ZN9TiXmlNode10FirstChildEPKc(ptr noundef nonnull align 8 dereferenceable(104) %4, ptr noundef %2)
  %.not6.not = icmp eq ptr %6, null
  br i1 %.not6.not, label %.thread, label %7

7:                                                ; preds = %5
  tail call void @_ZN11TiXmlHandleC2EP9TiXmlNode(ptr noundef nonnull align 8 dereferenceable(8) %0, ptr noundef nonnull %6)
  br label %8

.thread:                                          ; preds = %5, %3
  tail call void @_ZN11TiXmlHandleC2EP9TiXmlNode(ptr noundef nonnull align 8 dereferenceable(8) %0, ptr noundef null)
  br label %8

8:                                                ; preds = %7, %.thread
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_ZN9TiXmlNode10FirstChildEPKc(ptr noundef nonnull align 8 dereferenceable(104), 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 0}
!6 = !{!"_ZTS11TiXmlHandle", !7, i64 0}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}


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