diff --git a/libcxx/include/__split_buffer b/libcxx/include/__split_buffer
--- a/libcxx/include/__split_buffer
+++ b/libcxx/include/__split_buffer
@@ -66,107 +66,107 @@
     typedef typename add_lvalue_reference<allocator_type>::type __alloc_ref;
     typedef typename add_lvalue_reference<allocator_type>::type __alloc_const_ref;
 
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY __alloc_rr&           __alloc() _NOEXCEPT         {return __end_cap_.second();}
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY const __alloc_rr&     __alloc() const _NOEXCEPT   {return __end_cap_.second();}
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY pointer&              __end_cap() _NOEXCEPT       {return __end_cap_.first();}
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY const pointer&        __end_cap() const _NOEXCEPT {return __end_cap_.first();}
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI __alloc_rr&           __alloc() _NOEXCEPT         {return __end_cap_.second();}
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI const __alloc_rr&     __alloc() const _NOEXCEPT   {return __end_cap_.second();}
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI pointer&              __end_cap() _NOEXCEPT       {return __end_cap_.first();}
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI const pointer&        __end_cap() const _NOEXCEPT {return __end_cap_.first();}
 
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI
     __split_buffer()
         _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value);
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI
     explicit __split_buffer(__alloc_rr& __a);
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI
     explicit __split_buffer(const __alloc_rr& __a);
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 __split_buffer(size_type __cap, size_type __start, __alloc_rr& __a);
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 ~__split_buffer();
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI __split_buffer(size_type __cap, size_type __start, __alloc_rr& __a);
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI ~__split_buffer();
 
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 __split_buffer(__split_buffer&& __c)
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI __split_buffer(__split_buffer&& __c)
         _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value);
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 __split_buffer(__split_buffer&& __c, const __alloc_rr& __a);
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 __split_buffer& operator=(__split_buffer&& __c)
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI __split_buffer(__split_buffer&& __c, const __alloc_rr& __a);
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI __split_buffer& operator=(__split_buffer&& __c)
         _NOEXCEPT_((__alloc_traits::propagate_on_container_move_assignment::value &&
                 is_nothrow_move_assignable<allocator_type>::value) ||
                !__alloc_traits::propagate_on_container_move_assignment::value);
 
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY       iterator begin() _NOEXCEPT       {return __begin_;}
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY const_iterator begin() const _NOEXCEPT {return __begin_;}
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY       iterator end() _NOEXCEPT         {return __end_;}
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY const_iterator end() const _NOEXCEPT   {return __end_;}
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI       iterator begin() _NOEXCEPT       {return __begin_;}
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI const_iterator begin() const _NOEXCEPT {return __begin_;}
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI       iterator end() _NOEXCEPT         {return __end_;}
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI const_iterator end() const _NOEXCEPT   {return __end_;}
 
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI
     void clear() _NOEXCEPT
         {__destruct_at_end(__begin_);}
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY size_type size() const {return static_cast<size_type>(__end_ - __begin_);}
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY bool empty()     const {return __end_ == __begin_;}
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY size_type capacity() const {return static_cast<size_type>(__end_cap() - __first_);}
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY size_type __front_spare() const {return static_cast<size_type>(__begin_ - __first_);}
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY size_type __back_spare() const {return static_cast<size_type>(__end_cap() - __end_);}
-
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY       reference front()       {return *__begin_;}
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY const_reference front() const {return *__begin_;}
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY       reference back()        {return *(__end_ - 1);}
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY const_reference back() const  {return *(__end_ - 1);}
-
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 void reserve(size_type __n);
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 void shrink_to_fit() _NOEXCEPT;
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 void push_front(const_reference __x);
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY void push_back(const_reference __x);
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 void push_front(value_type&& __x);
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 void push_back(value_type&& __x);
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI size_type size() const {return static_cast<size_type>(__end_ - __begin_);}
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI bool empty()     const {return __end_ == __begin_;}
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI size_type capacity() const {return static_cast<size_type>(__end_cap() - __first_);}
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI size_type __front_spare() const {return static_cast<size_type>(__begin_ - __first_);}
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI size_type __back_spare() const {return static_cast<size_type>(__end_cap() - __end_);}
+
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI       reference front()       {return *__begin_;}
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI const_reference front() const {return *__begin_;}
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI       reference back()        {return *(__end_ - 1);}
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI const_reference back() const  {return *(__end_ - 1);}
+
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI void reserve(size_type __n);
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI void shrink_to_fit() _NOEXCEPT;
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI void push_front(const_reference __x);
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI void push_back(const_reference __x);
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI void push_front(value_type&& __x);
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI void push_back(value_type&& __x);
     template <class... _Args>
-        _LIBCPP_CONSTEXPR_AFTER_CXX17 void emplace_back(_Args&&... __args);
+        _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI void emplace_back(_Args&&... __args);
 
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY void pop_front() {__destruct_at_begin(__begin_+1);}
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY void pop_back() {__destruct_at_end(__end_-1);}
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI void pop_front() {__destruct_at_begin(__begin_+1);}
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI void pop_back() {__destruct_at_end(__end_-1);}
 
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 void __construct_at_end(size_type __n);
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 void __construct_at_end(size_type __n, const_reference __x);
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI void __construct_at_end(size_type __n);
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI void __construct_at_end(size_type __n, const_reference __x);
     template <class _InputIter>
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 __enable_if_t<__is_exactly_cpp17_input_iterator<_InputIter>::value>
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI __enable_if_t<__is_exactly_cpp17_input_iterator<_InputIter>::value>
         __construct_at_end(_InputIter __first, _InputIter __last);
     template <class _ForwardIterator>
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 __enable_if_t<__is_cpp17_forward_iterator<_ForwardIterator>::value>
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI __enable_if_t<__is_cpp17_forward_iterator<_ForwardIterator>::value>
         __construct_at_end(_ForwardIterator __first, _ForwardIterator __last);
 
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY void __destruct_at_begin(pointer __new_begin)
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI void __destruct_at_begin(pointer __new_begin)
         {__destruct_at_begin(__new_begin, is_trivially_destructible<value_type>());}
-        _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
+        _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI
         void __destruct_at_begin(pointer __new_begin, false_type);
-        _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
+        _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI
         void __destruct_at_begin(pointer __new_begin, true_type);
 
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI
     void __destruct_at_end(pointer __new_last) _NOEXCEPT
         {__destruct_at_end(__new_last, false_type());}
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI
         void __destruct_at_end(pointer __new_last, false_type) _NOEXCEPT;
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI
         void __destruct_at_end(pointer __new_last, true_type) _NOEXCEPT;
 
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 void swap(__split_buffer& __x)
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI void swap(__split_buffer& __x)
         _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value||
                    __is_nothrow_swappable<__alloc_rr>::value);
 
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 bool __invariants() const;
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI bool __invariants() const;
 
 private:
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI
     void __move_assign_alloc(__split_buffer& __c, true_type)
         _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value)
         {
             __alloc() = _VSTD::move(__c.__alloc());
         }
 
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
+    _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI
     void __move_assign_alloc(__split_buffer&, false_type) _NOEXCEPT
         {}
 
     struct _ConstructTransaction {
-      _LIBCPP_CONSTEXPR_AFTER_CXX17 explicit _ConstructTransaction(pointer* __p, size_type __n) _NOEXCEPT
+      _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI explicit _ConstructTransaction(pointer* __p, size_type __n) _NOEXCEPT
       : __pos_(*__p), __end_(*__p + __n), __dest_(__p) {
       }
-      _LIBCPP_CONSTEXPR_AFTER_CXX17 ~_ConstructTransaction() {
+      _LIBCPP_CONSTEXPR_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI ~_ConstructTransaction() {
         *__dest_ = __pos_;
       }
       pointer __pos_;
@@ -292,7 +292,7 @@
 
 template <class _Tp, class _Allocator>
 _LIBCPP_CONSTEXPR_AFTER_CXX17
-inline _LIBCPP_INLINE_VISIBILITY
+inline _LIBCPP_HIDE_FROM_ABI
 void
 __split_buffer<_Tp, _Allocator>::__destruct_at_end(pointer __new_last, false_type) _NOEXCEPT
 {
@@ -302,7 +302,7 @@
 
 template <class _Tp, class _Allocator>
 _LIBCPP_CONSTEXPR_AFTER_CXX17
-inline _LIBCPP_INLINE_VISIBILITY
+inline _LIBCPP_HIDE_FROM_ABI
 void
 __split_buffer<_Tp, _Allocator>::__destruct_at_end(pointer __new_last, true_type) _NOEXCEPT
 {
@@ -544,7 +544,7 @@
 
 template <class _Tp, class _Allocator>
 _LIBCPP_CONSTEXPR_AFTER_CXX17
-inline _LIBCPP_INLINE_VISIBILITY
+inline _LIBCPP_HIDE_FROM_ABI
 void
 __split_buffer<_Tp, _Allocator>::push_back(const_reference __x)
 {
@@ -638,7 +638,7 @@
 
 template <class _Tp, class _Allocator>
 _LIBCPP_CONSTEXPR_AFTER_CXX17
-inline _LIBCPP_INLINE_VISIBILITY
+inline _LIBCPP_HIDE_FROM_ABI
 void
 swap(__split_buffer<_Tp, _Allocator>& __x, __split_buffer<_Tp, _Allocator>& __y)
         _NOEXCEPT_(_NOEXCEPT_(__x.swap(__y)))