[libc++] Replace _LIBCPP_INLINE_VISIBILITY with _LIBCPP_HIDE_FROM_ABI in __bit_reference

[Mordante]

LGTM, thanks for the cleanup. Maybe mark the patch as NFC.

libcxx/include/__bit_reference

class __bit_reference
 
     friend typename _Cp::__self;
 
     friend class __bit_const_reference<_Cp>;
     friend class __bit_iterator<_Cp, false>;
 public:
     using __container = typename _Cp::__self;
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
     __bit_reference(const __bit_reference&) = default;
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 operator bool() const _NOEXCEPT
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 operator bool() const _NOEXCEPT
         {return static_cast<bool>(*__seg_ & __mask_);}
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 bool operator ~() const _NOEXCEPT
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool operator ~() const _NOEXCEPT
         {return !static_cast<bool>(*this);}
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
     __bit_reference& operator=(bool __x) _NOEXCEPT
     {
         if (__x)
             *__seg_ |= __mask_;
         else
             *__seg_ &= ~__mask_;
         return *this;
     }
 
 #if _LIBCPP_STD_VER >= 23
     _LIBCPP_HIDE_FROM_ABI constexpr const __bit_reference& operator=(bool __x) const noexcept {
         if (__x)
             *__seg_ |= __mask_;
         else
             *__seg_ &= ~__mask_;
         return *this;
     }
 #endif
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
     __bit_reference& operator=(const __bit_reference& __x) _NOEXCEPT
         {return operator=(static_cast<bool>(__x));}
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 void flip() _NOEXCEPT {*__seg_ ^= __mask_;}
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator<_Cp, false> operator&() const _NOEXCEPT
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void flip() _NOEXCEPT {*__seg_ ^= __mask_;}
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator<_Cp, false> operator&() const _NOEXCEPT
         {return __bit_iterator<_Cp, false>(__seg_, static_cast<unsigned>(std::__libcpp_ctz(__mask_)));}
 private:
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
     explicit __bit_reference(__storage_pointer __s, __storage_type __m) _NOEXCEPT
         : __seg_(__s), __mask_(__m) {}
 };
 
 template <class _Cp>
 class __bit_reference<_Cp, false>
 {
 };
 
 template <class _Cp>
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
 void
 swap(__bit_reference<_Cp> __x, __bit_reference<_Cp> __y) _NOEXCEPT
 {
     bool __t = __x;
     __x = __y;
     __y = __t;
 }
 
 template <class _Cp, class _Dp>
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
 void
 swap(__bit_reference<_Cp> __x, __bit_reference<_Dp> __y) _NOEXCEPT
 {
     bool __t = __x;
     __x = __y;
     __y = __t;
 }
 
 template <class _Cp>
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
 void
 swap(__bit_reference<_Cp> __x, bool& __y) _NOEXCEPT
 {
     bool __t = __x;
     __x = __y;
     __y = __t;
 }
 
 template <class _Cp>
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
 void
 swap(bool& __x, __bit_reference<_Cp> __y) _NOEXCEPT
 {
     bool __t = __x;
     __x = __y;
     __y = __t;
 }
 
 template <class _Cp>
 class __bit_const_reference
 {
     typedef typename _Cp::__storage_type          __storage_type;
     typedef typename _Cp::__const_storage_pointer __storage_pointer;
 
     __storage_pointer        __seg_;
     __storage_type __mask_;
 
     friend typename _Cp::__self;
     friend class __bit_iterator<_Cp, true>;
 public:
     using __container = typename _Cp::__self;
 
-    _LIBCPP_INLINE_VISIBILITY
+    _LIBCPP_HIDE_FROM_ABI
     __bit_const_reference(const __bit_const_reference&) = default;
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
     __bit_const_reference(const __bit_reference<_Cp>& __x) _NOEXCEPT
         : __seg_(__x.__seg_), __mask_(__x.__mask_) {}
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR operator bool() const _NOEXCEPT
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR operator bool() const _NOEXCEPT
         {return static_cast<bool>(*__seg_ & __mask_);}
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator<_Cp, true> operator&() const _NOEXCEPT
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator<_Cp, true> operator&() const _NOEXCEPT
         {return __bit_iterator<_Cp, true>(__seg_, static_cast<unsigned>(std::__libcpp_ctz(__mask_)));}
 private:
-    _LIBCPP_INLINE_VISIBILITY
+    _LIBCPP_HIDE_FROM_ABI
     _LIBCPP_CONSTEXPR
     explicit __bit_const_reference(__storage_pointer __s, __storage_type __m) _NOEXCEPT
         : __seg_(__s), __mask_(__m) {}
 
     __bit_const_reference& operator=(const __bit_const_reference&) = delete;
 };
 
 template <bool _Invert, class _Tp>
if (__n > 0)
         __storage_type __b = std::__invert_if<!_ToFind>(*__first.__seg_) & __m;
         if (__b)
             return _It(__first.__seg_, static_cast<unsigned>(_VSTD::__libcpp_ctz(__b)));
     }
     return _It(__first.__seg_, static_cast<unsigned>(__n));
 }
 
 template <class _Cp, bool _IsConst, class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
 __bit_iterator<_Cp, _IsConst>
 find(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, const _Tp& __value)
 {
     if (static_cast<bool>(__value))
         return _VSTD::__find_bool<true>(__first, static_cast<typename _Cp::size_type>(__last - __first));
     return _VSTD::__find_bool<false>(__first, static_cast<typename _Cp::size_type>(__last - __first));
 }
 
__count_bool(__bit_iterator<_Cp, _IsConst> __first, typename _Cp::size_type __n)
     {
         __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n);
         __r += _VSTD::__libcpp_popcount(std::__invert_if<!_ToCount>(*__first.__seg_) & __m);
     }
     return __r;
 }
 
 template <class _Cp, bool _IsConst, class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
+inline _LIBCPP_HIDE_FROM_ABI
 typename __bit_iterator<_Cp, _IsConst>::difference_type
 count(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, const _Tp& __value)
 {
     if (static_cast<bool>(__value))
         return _VSTD::__count_bool<true>(__first, static_cast<typename _Cp::size_type>(__last - __first));
     return _VSTD::__count_bool<false>(__first, static_cast<typename _Cp::size_type>(__last - __first));
 }
 
if (__n > 0)
         if (_FillValue)
             *__first.__seg_ |= __m;
         else
             *__first.__seg_ &= ~__m;
     }
 }
 
 template <class _Cp>
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
 void
 fill_n(__bit_iterator<_Cp, false> __first, typename _Cp::size_type __n, bool __value)
 {
     if (__n > 0)
     {
         if (__value)
             _VSTD::__fill_n<true>(__first, __n);
         else
             _VSTD::__fill_n<false>(__first, __n);
     }
 }
 
 // fill
 
 template <class _Cp>
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
 void
 fill(__bit_iterator<_Cp, false> __first, __bit_iterator<_Cp, false> __last, bool __value)
 {
     _VSTD::fill_n(__first, static_cast<typename _Cp::size_type>(__last - __first), __value);
 }
 
 // copy
 
if (__n > 0)
                 __result.__ctz_ = static_cast<unsigned>(__n);
             }
         }
     }
     return __result;
 }
 
 template <class _Cp, bool _IsConst>
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
 __bit_iterator<_Cp, false>
 copy(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, __bit_iterator<_Cp, false> __result)
 {
     if (__first.__ctz_ == __result.__ctz_)
         return _VSTD::__copy_aligned(__first, __last, __result);
     return _VSTD::__copy_unaligned(__first, __last, __result);
 }
 
if (__n > 0)
                 *__result.__seg_ |= __b << (__result.__ctz_ - (__bits_per_word - __n - __dn));
             }
         }
     }
     return __result;
 }
 
 template <class _Cp, bool _IsConst>
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
 __bit_iterator<_Cp, false>
 copy_backward(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, __bit_iterator<_Cp, false> __result)
 {
     if (__last.__ctz_ == __result.__ctz_)
         return _VSTD::__copy_backward_aligned(__first, __last, __result);
     return _VSTD::__copy_backward_unaligned(__first, __last, __result);
 }
 
 // move
 
 template <class _Cp, bool _IsConst>
-inline _LIBCPP_INLINE_VISIBILITY
+inline _LIBCPP_HIDE_FROM_ABI
 __bit_iterator<_Cp, false>
 move(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, __bit_iterator<_Cp, false> __result)
 {
     return _VSTD::copy(__first, __last, __result);
 }
 
 // move_backward
 
 template <class _Cp, bool _IsConst>
-inline _LIBCPP_INLINE_VISIBILITY
+inline _LIBCPP_HIDE_FROM_ABI
 __bit_iterator<_Cp, false>
 move_backward(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, __bit_iterator<_Cp, false> __result)
 {
     return _VSTD::copy_backward(__first, __last, __result);
 }
 
 // swap_ranges
 
if (__n > 0)
                 __result.__ctz_ = static_cast<unsigned>(__n);
             }
         }
     }
     return __result;
 }
 
 template <class __C1, class __C2>
-inline _LIBCPP_INLINE_VISIBILITY
+inline _LIBCPP_HIDE_FROM_ABI
 __bit_iterator<__C2, false>
 swap_ranges(__bit_iterator<__C1, false> __first1, __bit_iterator<__C1, false> __last1,
             __bit_iterator<__C2, false> __first2)
 {
     if (__first1.__ctz_ == __first2.__ctz_)
         return _VSTD::__swap_ranges_aligned(__first1, __last1, __first2);
     return _VSTD::__swap_ranges_unaligned(__first1, __last1, __first2);
 }
 
 // rotate
 
 template <class _Cp>
 struct __bit_array
 {
     typedef typename _Cp::difference_type difference_type;
     typedef typename _Cp::__storage_type  __storage_type;
     typedef typename _Cp::__storage_pointer __storage_pointer;
     typedef typename _Cp::iterator        iterator;
     static const unsigned __bits_per_word = _Cp::__bits_per_word;
     static const unsigned _Np = 4;
 
     difference_type __size_;
     __storage_type __word_[_Np];
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 static difference_type capacity()
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 static difference_type capacity()
         {return static_cast<difference_type>(_Np * __bits_per_word);}
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 explicit __bit_array(difference_type __s) : __size_(__s) {
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 explicit __bit_array(difference_type __s) : __size_(__s) {
         if (__libcpp_is_constant_evaluated()) {
             for (size_t __i = 0; __i != __bit_array<_Cp>::_Np; ++__i)
                 std::__construct_at(__word_ + __i, 0);
         }
     }
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 iterator begin()
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 iterator begin()
     {
         return iterator(pointer_traits<__storage_pointer>::pointer_to(__word_[0]), 0);
     }
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 iterator end()
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 iterator end()
     {
         return iterator(pointer_traits<__storage_pointer>::pointer_to(__word_[0]) + __size_ / __bits_per_word,
                                                   static_cast<unsigned>(__size_ % __bits_per_word));
     }
 };
 
 template <class _Cp>
 _LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI __bit_iterator<_Cp, false>
if (__n > 0)
             if ((*__first2.__seg_ & __m) != (*__first1.__seg_ & __m))
                 return false;
         }
     }
     return true;
 }
 
 template <class _Cp, bool _IC1, bool _IC2>
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
 bool
 equal(__bit_iterator<_Cp, _IC1> __first1, __bit_iterator<_Cp, _IC1> __last1, __bit_iterator<_Cp, _IC2> __first2)
 {
     if (__first1.__ctz_ == __first2.__ctz_)
         return _VSTD::__equal_aligned(__first1, __last1, __first2);
     return _VSTD::__equal_unaligned(__first1, __last1, __first2);
 }
 
private:
     typedef __conditional_t<_IsConst, typename _Cp::__const_storage_pointer, typename _Cp::__storage_pointer>
         __storage_pointer;
     static const unsigned __bits_per_word = _Cp::__bits_per_word;
 
     __storage_pointer __seg_;
     unsigned          __ctz_;
 
 public:
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator() _NOEXCEPT
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator() _NOEXCEPT
 #if _LIBCPP_STD_VER >= 14
     : __seg_(nullptr), __ctz_(0)
 #endif
     {}
 
     // When _IsConst=false, this is the copy constructor.
     // It is non-trivial. Making it trivial would break ABI.
     // When _IsConst=true, this is a converting constructor;
     // the copy and move constructors are implicitly generated
     // and trivial.
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
     __bit_iterator(const __bit_iterator<_Cp, false>& __it) _NOEXCEPT
         : __seg_(__it.__seg_), __ctz_(__it.__ctz_) {}
 
     // When _IsConst=false, we have a user-provided copy constructor,
     // so we must also provide a copy assignment operator because
     // the implicit generation of a defaulted one is deprecated.
     // When _IsConst=true, the assignment operators are
     // implicitly generated and trivial.
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
     __bit_iterator& operator=(const _If<_IsConst, struct __private_nat, __bit_iterator>& __it) {
         __seg_ = __it.__seg_;
         __ctz_ = __it.__ctz_;
         return *this;
     }
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 reference operator*() const _NOEXCEPT {
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 reference operator*() const _NOEXCEPT {
         return __conditional_t<_IsConst, __bit_const_reference<_Cp>, __bit_reference<_Cp> >(
             __seg_, __storage_type(1) << __ctz_);
     }
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator& operator++()
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator& operator++()
     {
         if (__ctz_ != __bits_per_word-1)
             ++__ctz_;
         else
         {
             __ctz_ = 0;
             ++__seg_;
         }
         return *this;
     }
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator operator++(int)
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator operator++(int)
     {
         __bit_iterator __tmp = *this;
         ++(*this);
         return __tmp;
     }
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator& operator--()
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator& operator--()
     {
         if (__ctz_ != 0)
             --__ctz_;
         else
         {
             __ctz_ = __bits_per_word - 1;
             --__seg_;
         }
         return *this;
     }
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator operator--(int)
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator operator--(int)
     {
         __bit_iterator __tmp = *this;
         --(*this);
         return __tmp;
     }
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator& operator+=(difference_type __n)
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator& operator+=(difference_type __n)
     {
         if (__n >= 0)
             __seg_ += (__n + __ctz_) / __bits_per_word;
         else
             __seg_ += static_cast<difference_type>(__n - __bits_per_word + __ctz_ + 1)
                     / static_cast<difference_type>(__bits_per_word);
         __n &= (__bits_per_word - 1);
         __ctz_ = static_cast<unsigned>((__n + __ctz_)  % __bits_per_word);
         return *this;
     }
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator& operator-=(difference_type __n)
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator& operator-=(difference_type __n)
     {
         return *this += -__n;
     }
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator operator+(difference_type __n) const
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator operator+(difference_type __n) const
     {
         __bit_iterator __t(*this);
         __t += __n;
         return __t;
     }
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator operator-(difference_type __n) const
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator operator-(difference_type __n) const
     {
         __bit_iterator __t(*this);
         __t -= __n;
         return __t;
     }
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
     friend __bit_iterator operator+(difference_type __n, const __bit_iterator& __it) {return __it + __n;}
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
     friend difference_type operator-(const __bit_iterator& __x, const __bit_iterator& __y)
         {return (__x.__seg_ - __y.__seg_) * __bits_per_word + __x.__ctz_ - __y.__ctz_;}
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 reference operator[](difference_type __n) const {return *(*this + __n);}
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 reference operator[](difference_type __n) const {return *(*this + __n);}
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 friend bool operator==(const __bit_iterator& __x, const __bit_iterator& __y)
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 friend bool operator==(const __bit_iterator& __x, const __bit_iterator& __y)
         {return __x.__seg_ == __y.__seg_ && __x.__ctz_ == __y.__ctz_;}
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 friend bool operator!=(const __bit_iterator& __x, const __bit_iterator& __y)
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 friend bool operator!=(const __bit_iterator& __x, const __bit_iterator& __y)
         {return !(__x == __y);}
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 friend bool operator<(const __bit_iterator& __x, const __bit_iterator& __y)
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 friend bool operator<(const __bit_iterator& __x, const __bit_iterator& __y)
         {return __x.__seg_ < __y.__seg_ || (__x.__seg_ == __y.__seg_ && __x.__ctz_ < __y.__ctz_);}
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 friend bool operator>(const __bit_iterator& __x, const __bit_iterator& __y)
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 friend bool operator>(const __bit_iterator& __x, const __bit_iterator& __y)
         {return __y < __x;}
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 friend bool operator<=(const __bit_iterator& __x, const __bit_iterator& __y)
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 friend bool operator<=(const __bit_iterator& __x, const __bit_iterator& __y)
         {return !(__y < __x);}
 
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 friend bool operator>=(const __bit_iterator& __x, const __bit_iterator& __y)
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 friend bool operator>=(const __bit_iterator& __x, const __bit_iterator& __y)
         {return !(__x < __y);}
 
 private:
-    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+    _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
     explicit __bit_iterator(__storage_pointer __s, unsigned __ctz) _NOEXCEPT
         : __seg_(__s), __ctz_(__ctz) {}
 
     friend typename _Cp::__self;
 
     friend class __bit_reference<_Cp>;
     friend class __bit_const_reference<_Cp>;
     friend class __bit_iterator<_Cp, true>;