; LLVM IR from facebookresearch/habitat-sim :: src/deps/tinyxml2/tinyxml2.ll (ZNK8tinyxml27XMLNode16LastChildElementEPKc)

; 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: 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
declare dso_local noundef ptr @_ZNK8tinyxml27XMLNode17ToElementWithNameEPKc(ptr noundef nonnull align 8 dereferenceable(104), ptr noundef) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_ZNK8tinyxml27XMLNode16LastChildElementEPKc(ptr noundef nonnull align 8 dereferenceable(104) %0, ptr noundef %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %9 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %10 = getelementptr inbounds %"class.tinyxml2::XMLNode", ptr %9, i32 0, i32 6
  %11 = load ptr, ptr %10, align 8, !tbaa !9
  store ptr %11, ptr %6, align 8, !tbaa !5
  br label %12

12:                                               ; preds = %28, %2
  %13 = load ptr, ptr %6, align 8, !tbaa !5
  %14 = icmp ne ptr %13, null
  br i1 %14, label %16, label %15

15:                                               ; preds = %12
  store i32 2, ptr %7, align 4
  br label %32

16:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  %17 = load ptr, ptr %6, align 8, !tbaa !5
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = call noundef ptr @_ZNK8tinyxml27XMLNode17ToElementWithNameEPKc(ptr noundef nonnull align 8 dereferenceable(104) %17, ptr noundef %18)
  store ptr %19, ptr %8, align 8, !tbaa !5
  %20 = load ptr, ptr %8, align 8, !tbaa !5
  %21 = icmp ne ptr %20, null
  br i1 %21, label %22, label %24

22:                                               ; preds = %16
  %23 = load ptr, ptr %8, align 8, !tbaa !5
  store ptr %23, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %25

24:                                               ; preds = %16
  store i32 0, ptr %7, align 4
  br label %25

25:                                               ; preds = %24, %22
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  %26 = load i32, ptr %7, align 4
  switch i32 %26, label %32 [
    i32 0, label %27
  ]

27:                                               ; preds = %25
  br label %28

28:                                               ; preds = %27
  %29 = load ptr, ptr %6, align 8, !tbaa !5
  %30 = getelementptr inbounds %"class.tinyxml2::XMLNode", ptr %29, i32 0, i32 7
  %31 = load ptr, ptr %30, align 8, !tbaa !13
  store ptr %31, ptr %6, align 8, !tbaa !5
  br label %12, !llvm.loop !14

32:                                               ; preds = %25, %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  %33 = load i32, ptr %7, align 4
  switch i32 %33, label %37 [
    i32 2, label %34
    i32 1, label %35
  ]

34:                                               ; preds = %32
  store ptr null, ptr %3, align 8
  br label %35

35:                                               ; preds = %34, %32
  %36 = load ptr, ptr %3, align 8
  ret ptr %36

37:                                               ; preds = %32
  unreachable
}

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 = { 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 64}
!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 72}
!14 = distinct !{!14, !15}
!15 = !{!"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 uwtable
declare dso_local noundef ptr @_ZNK8tinyxml27XMLNode17ToElementWithNameEPKc(ptr noundef nonnull align 8 dereferenceable(104), ptr noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_ZNK8tinyxml27XMLNode16LastChildElementEPKc(ptr nocapture noundef nonnull readonly align 8 dereferenceable(104) %0, ptr noundef %1) local_unnamed_addr #0 align 2 {
  %3 = getelementptr inbounds i8, ptr %0, i64 64
  %.01114 = load ptr, ptr %3, align 8, !tbaa !5
  %.not15 = icmp eq ptr %.01114, null
  br i1 %.not15, label %._crit_edge, label %.lr.ph

4:                                                ; preds = %.lr.ph
  %5 = getelementptr inbounds i8, ptr %.01116, i64 72
  %.011 = load ptr, ptr %5, align 8, !tbaa !5
  %.not = icmp eq ptr %.011, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

.lr.ph:                                           ; preds = %2, %4
  %.01116 = phi ptr [ %.011, %4 ], [ %.01114, %2 ]
  %6 = tail call noundef ptr @_ZNK8tinyxml27XMLNode17ToElementWithNameEPKc(ptr noundef nonnull align 8 dereferenceable(104) %.01116, ptr noundef %1)
  %.not13 = icmp eq ptr %6, null
  br i1 %.not13, label %4, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %4, %2
  %spec.select = phi ptr [ null, %2 ], [ null, %4 ], [ %6, %.lr.ph ]
  ret ptr %spec.select
}

attributes #0 = { 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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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