; LLVM IR from stan-dev/math :: lib/boost_1.84.0/libs/serialization/src (basic_serializer_map)

; 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"

%"struct.std::_Rb_tree_const_iterator" = type { ptr }
%"class.boost::archive::detail::basic_serializer_map" = type { %"class.std::set" }
%"class.std::set" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<const boost::archive::detail::basic_serializer *, const boost::archive::detail::basic_serializer *, std::_Identity<const boost::archive::detail::basic_serializer *>, boost::archive::detail::basic_serializer_map::type_info_pointer_compare>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<const boost::archive::detail::basic_serializer *, const boost::archive::detail::basic_serializer *, std::_Identity<const boost::archive::detail::basic_serializer *>, boost::archive::detail::basic_serializer_map::type_info_pointer_compare>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::_Rb_tree_header" = type { %"struct.std::_Rb_tree_node_base", i64 }
%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN5boost7archive6detail20basic_serializer_map5eraseEPKNS1_16basic_serializerE(ptr noundef nonnull align 8 dereferenceable(48) %0, ptr noundef %1) #0 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %6 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %7 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %8 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %9 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %10 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %11 = getelementptr inbounds %"class.boost::archive::detail::basic_serializer_map", ptr %10, i32 0, i32 0
  %12 = call ptr @_ZNKSt3setIPKN5boost7archive6detail16basic_serializerENS2_20basic_serializer_map25type_info_pointer_compareESaIS5_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %11) #3
  %13 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %5, i32 0, i32 0
  store ptr %12, ptr %13, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %14 = getelementptr inbounds %"class.boost::archive::detail::basic_serializer_map", ptr %10, i32 0, i32 0
  %15 = call ptr @_ZNKSt3setIPKN5boost7archive6detail16basic_serializerENS2_20basic_serializer_map25type_info_pointer_compareESaIS5_EE3endEv(ptr noundef nonnull align 8 dereferenceable(48) %14) #3
  %16 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %6, i32 0, i32 0
  store ptr %15, ptr %16, align 8
  br label %17

17:                                               ; preds = %35, %2
  %18 = call noundef zeroext i1 @_ZStneRKSt23_Rb_tree_const_iteratorIPKN5boost7archive6detail16basic_serializerEES8_(ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull align 8 dereferenceable(8) %6) #3
  br i1 %18, label %19, label %36

19:                                               ; preds = %17
  %20 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIPKN5boost7archive6detail16basic_serializerEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %5) #3
  %21 = load ptr, ptr %20, align 8, !tbaa !5
  %22 = load ptr, ptr %4, align 8, !tbaa !5
  %23 = icmp eq ptr %21, %22
  br i1 %23, label %24, label %32

24:                                               ; preds = %19
  %25 = getelementptr inbounds %"class.boost::archive::detail::basic_serializer_map", ptr %10, i32 0, i32 0
  %26 = call ptr @_ZNSt23_Rb_tree_const_iteratorIPKN5boost7archive6detail16basic_serializerEEppEi(ptr noundef nonnull align 8 dereferenceable(8) %5, i32 noundef 0) #3
  %27 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %7, i32 0, i32 0
  store ptr %26, ptr %27, align 8
  %28 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %7, i32 0, i32 0
  %29 = load ptr, ptr %28, align 8
  %30 = call ptr @_ZNSt3setIPKN5boost7archive6detail16basic_serializerENS2_20basic_serializer_map25type_info_pointer_compareESaIS5_EE5eraseB5cxx11ESt23_Rb_tree_const_iteratorIS5_E(ptr noundef nonnull align 8 dereferenceable(48) %25, ptr %29)
  %31 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %8, i32 0, i32 0
  store ptr %30, ptr %31, align 8
  br label %35

32:                                               ; preds = %19
  %33 = call ptr @_ZNSt23_Rb_tree_const_iteratorIPKN5boost7archive6detail16basic_serializerEEppEi(ptr noundef nonnull align 8 dereferenceable(8) %5, i32 noundef 0) #3
  %34 = getelementptr inbounds %"struct.std::_Rb_tree_const_iterator", ptr %9, i32 0, i32 0
  store ptr %33, ptr %34, align 8
  br label %35

35:                                               ; preds = %32, %24
  br label %17, !llvm.loop !9

36:                                               ; preds = %17
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt3setIPKN5boost7archive6detail16basic_serializerENS2_20basic_serializer_map25type_info_pointer_compareESaIS5_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(48)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt3setIPKN5boost7archive6detail16basic_serializerENS2_20basic_serializer_map25type_info_pointer_compareESaIS5_EE3endEv(ptr noundef nonnull align 8 dereferenceable(48)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZStneRKSt23_Rb_tree_const_iteratorIPKN5boost7archive6detail16basic_serializerEES8_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIPKN5boost7archive6detail16basic_serializerEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local ptr @_ZNSt3setIPKN5boost7archive6detail16basic_serializerENS2_20basic_serializer_map25type_info_pointer_compareESaIS5_EE5eraseB5cxx11ESt23_Rb_tree_const_iteratorIS5_E(ptr noundef nonnull align 8 dereferenceable(48), ptr) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt23_Rb_tree_const_iteratorIPKN5boost7archive6detail16basic_serializerEEppEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #2 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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"

%"struct.std::_Rb_tree_const_iterator" = type { ptr }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN5boost7archive6detail20basic_serializer_map5eraseEPKNS1_16basic_serializerE(ptr noundef nonnull align 8 dereferenceable(48) %0, ptr noundef readnone %1) local_unnamed_addr #0 align 2 {
  %3 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  %4 = alloca %"struct.std::_Rb_tree_const_iterator", align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %5 = tail call ptr @_ZNKSt3setIPKN5boost7archive6detail16basic_serializerENS2_20basic_serializer_map25type_info_pointer_compareESaIS5_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %0) #3
  store ptr %5, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  %6 = tail call ptr @_ZNKSt3setIPKN5boost7archive6detail16basic_serializerENS2_20basic_serializer_map25type_info_pointer_compareESaIS5_EE3endEv(ptr noundef nonnull align 8 dereferenceable(48) %0) #3
  store ptr %6, ptr %4, align 8
  %7 = call noundef zeroext i1 @_ZStneRKSt23_Rb_tree_const_iteratorIPKN5boost7archive6detail16basic_serializerEES8_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  br i1 %7, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2, %14
  %8 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIPKN5boost7archive6detail16basic_serializerEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #3
  %9 = load ptr, ptr %8, align 8, !tbaa !5
  %10 = icmp eq ptr %9, %1
  %11 = call ptr @_ZNSt23_Rb_tree_const_iteratorIPKN5boost7archive6detail16basic_serializerEEppEi(ptr noundef nonnull align 8 dereferenceable(8) %3, i32 noundef 0) #3
  br i1 %10, label %12, label %14

12:                                               ; preds = %.lr.ph
  %13 = call ptr @_ZNSt3setIPKN5boost7archive6detail16basic_serializerENS2_20basic_serializer_map25type_info_pointer_compareESaIS5_EE5eraseB5cxx11ESt23_Rb_tree_const_iteratorIS5_E(ptr noundef nonnull align 8 dereferenceable(48) %0, ptr %11)
  br label %14

14:                                               ; preds = %.lr.ph, %12
  %15 = call noundef zeroext i1 @_ZStneRKSt23_Rb_tree_const_iteratorIPKN5boost7archive6detail16basic_serializerEES8_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  br i1 %15, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %14, %2
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  ret void
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt3setIPKN5boost7archive6detail16basic_serializerENS2_20basic_serializer_map25type_info_pointer_compareESaIS5_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt3setIPKN5boost7archive6detail16basic_serializerENS2_20basic_serializer_map25type_info_pointer_compareESaIS5_EE3endEv(ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZStneRKSt23_Rb_tree_const_iteratorIPKN5boost7archive6detail16basic_serializerEES8_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt23_Rb_tree_const_iteratorIPKN5boost7archive6detail16basic_serializerEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local ptr @_ZNSt3setIPKN5boost7archive6detail16basic_serializerENS2_20basic_serializer_map25type_info_pointer_compareESaIS5_EE5eraseB5cxx11ESt23_Rb_tree_const_iteratorIS5_E(ptr noundef nonnull align 8 dereferenceable(48), ptr) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt23_Rb_tree_const_iteratorIPKN5boost7archive6detail16basic_serializerEEppEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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"}


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