diff --git a/contrib/llvm-project/libcxx/include/__atomic/atomic_ref.h b/contrib/llvm-project/libcxx/include/__atomic/atomic_ref.h
index 156f1961151c..f5ab6ffc9e77 100644
--- a/contrib/llvm-project/libcxx/include/__atomic/atomic_ref.h
+++ b/contrib/llvm-project/libcxx/include/__atomic/atomic_ref.h
@@ -1,360 +1,360 @@
 // -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //                        Kokkos v. 4.0
 //       Copyright (2022) National Technology & Engineering
 //               Solutions of Sandia, LLC (NTESS).
 //
 // Under the terms of Contract DE-NA0003525 with NTESS,
 // the U.S. Government retains certain rights in this software.
 //
 //===---------------------------------------------------------------------===//
 
 #ifndef _LIBCPP___ATOMIC_ATOMIC_REF_H
 #define _LIBCPP___ATOMIC_ATOMIC_REF_H
 
 #include <__assert>
 #include <__atomic/atomic_sync.h>
 #include <__atomic/check_memory_order.h>
 #include <__atomic/to_gcc_order.h>
 #include <__concepts/arithmetic.h>
 #include <__concepts/same_as.h>
 #include <__config>
 #include <__memory/addressof.h>
 #include <__type_traits/has_unique_object_representation.h>
 #include <__type_traits/is_trivially_copyable.h>
 #include <cstddef>
 #include <cstdint>
 #include <cstring>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
 #endif
 
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 20
 
 template <class _Tp>
 struct __atomic_ref_base {
 protected:
   _Tp* __ptr_;
 
   _LIBCPP_HIDE_FROM_ABI __atomic_ref_base(_Tp& __obj) : __ptr_(std::addressof(__obj)) {}
 
 private:
   _LIBCPP_HIDE_FROM_ABI static _Tp* __clear_padding(_Tp& __val) noexcept {
     _Tp* __ptr = std::addressof(__val);
 #  if __has_builtin(__builtin_clear_padding)
     __builtin_clear_padding(__ptr);
 #  endif
     return __ptr;
   }
 
   _LIBCPP_HIDE_FROM_ABI static bool __compare_exchange(
       _Tp* __ptr, _Tp* __expected, _Tp* __desired, bool __is_weak, int __success, int __failure) noexcept {
     if constexpr (
 #  if __has_builtin(__builtin_clear_padding)
         has_unique_object_representations_v<_Tp> || floating_point<_Tp>
 #  else
         true // NOLINT(readability-simplify-boolean-expr)
 #  endif
     ) {
       return __atomic_compare_exchange(__ptr, __expected, __desired, __is_weak, __success, __failure);
     } else { // _Tp has padding bits and __builtin_clear_padding is available
       __clear_padding(*__desired);
       _Tp __copy = *__expected;
       __clear_padding(__copy);
       // The algorithm we use here is basically to perform `__atomic_compare_exchange` on the
       // values until it has either succeeded, or failed because the value representation of the
       // objects involved was different. This is why we loop around __atomic_compare_exchange:
       // we basically loop until its failure is caused by the value representation of the objects
       // being different, not only their object representation.
       while (true) {
         _Tp __prev = __copy;
         if (__atomic_compare_exchange(__ptr, std::addressof(__copy), __desired, __is_weak, __success, __failure)) {
           return true;
         }
         _Tp __curr = __copy;
         if (std::memcmp(__clear_padding(__prev), __clear_padding(__curr), sizeof(_Tp)) != 0) {
           // Value representation without padding bits do not compare equal ->
           // write the current content of *ptr into *expected
           std::memcpy(__expected, std::addressof(__copy), sizeof(_Tp));
           return false;
         }
       }
     }
   }
 
   friend struct __atomic_waitable_traits<__atomic_ref_base<_Tp>>;
 
 public:
   using value_type = _Tp;
 
   static constexpr size_t required_alignment = alignof(_Tp);
 
   // The __atomic_always_lock_free builtin takes into account the alignment of the pointer if provided,
   // so we create a fake pointer with a suitable alignment when querying it. Note that we are guaranteed
   // that the pointer is going to be aligned properly at runtime because that is a (checked) precondition
   // of atomic_ref's constructor.
   static constexpr bool is_always_lock_free =
       __atomic_always_lock_free(sizeof(_Tp), reinterpret_cast<void*>(-required_alignment));
 
   _LIBCPP_HIDE_FROM_ABI bool is_lock_free() const noexcept { return __atomic_is_lock_free(sizeof(_Tp), __ptr_); }
 
   _LIBCPP_HIDE_FROM_ABI void store(_Tp __desired, memory_order __order = memory_order::seq_cst) const noexcept
       _LIBCPP_CHECK_STORE_MEMORY_ORDER(__order) {
     _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(
         __order == memory_order::relaxed || __order == memory_order::release || __order == memory_order::seq_cst,
         "atomic_ref: memory order argument to atomic store operation is invalid");
     __atomic_store(__ptr_, __clear_padding(__desired), std::__to_gcc_order(__order));
   }
 
   _LIBCPP_HIDE_FROM_ABI _Tp operator=(_Tp __desired) const noexcept {
     store(__desired);
     return __desired;
   }
 
   _LIBCPP_HIDE_FROM_ABI _Tp load(memory_order __order = memory_order::seq_cst) const noexcept
       _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__order) {
     _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(
         __order == memory_order::relaxed || __order == memory_order::consume || __order == memory_order::acquire ||
             __order == memory_order::seq_cst,
         "atomic_ref: memory order argument to atomic load operation is invalid");
     alignas(_Tp) byte __mem[sizeof(_Tp)];
     auto* __ret = reinterpret_cast<_Tp*>(__mem);
     __atomic_load(__ptr_, __ret, std::__to_gcc_order(__order));
     return *__ret;
   }
 
   _LIBCPP_HIDE_FROM_ABI operator _Tp() const noexcept { return load(); }
 
   _LIBCPP_HIDE_FROM_ABI _Tp exchange(_Tp __desired, memory_order __order = memory_order::seq_cst) const noexcept {
     alignas(_Tp) byte __mem[sizeof(_Tp)];
     auto* __ret = reinterpret_cast<_Tp*>(__mem);
     __atomic_exchange(__ptr_, __clear_padding(__desired), __ret, std::__to_gcc_order(__order));
     return *__ret;
   }
 
   _LIBCPP_HIDE_FROM_ABI bool
   compare_exchange_weak(_Tp& __expected, _Tp __desired, memory_order __success, memory_order __failure) const noexcept
       _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__success, __failure) {
     _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(
         __failure == memory_order::relaxed || __failure == memory_order::consume ||
             __failure == memory_order::acquire || __failure == memory_order::seq_cst,
         "atomic_ref: failure memory order argument to weak atomic compare-and-exchange operation is invalid");
     return __compare_exchange(
         __ptr_,
         std::addressof(__expected),
         std::addressof(__desired),
         true,
         std::__to_gcc_order(__success),
         std::__to_gcc_order(__failure));
   }
   _LIBCPP_HIDE_FROM_ABI bool
   compare_exchange_strong(_Tp& __expected, _Tp __desired, memory_order __success, memory_order __failure) const noexcept
       _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__success, __failure) {
     _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(
         __failure == memory_order::relaxed || __failure == memory_order::consume ||
             __failure == memory_order::acquire || __failure == memory_order::seq_cst,
         "atomic_ref: failure memory order argument to strong atomic compare-and-exchange operation is invalid");
     return __compare_exchange(
         __ptr_,
         std::addressof(__expected),
         std::addressof(__desired),
         false,
         std::__to_gcc_order(__success),
         std::__to_gcc_order(__failure));
   }
 
   _LIBCPP_HIDE_FROM_ABI bool
   compare_exchange_weak(_Tp& __expected, _Tp __desired, memory_order __order = memory_order::seq_cst) const noexcept {
     return __compare_exchange(
         __ptr_,
         std::addressof(__expected),
         std::addressof(__desired),
         true,
         std::__to_gcc_order(__order),
         std::__to_gcc_failure_order(__order));
   }
   _LIBCPP_HIDE_FROM_ABI bool
   compare_exchange_strong(_Tp& __expected, _Tp __desired, memory_order __order = memory_order::seq_cst) const noexcept {
     return __compare_exchange(
         __ptr_,
         std::addressof(__expected),
         std::addressof(__desired),
         false,
         std::__to_gcc_order(__order),
         std::__to_gcc_failure_order(__order));
   }
 
   _LIBCPP_HIDE_FROM_ABI void wait(_Tp __old, memory_order __order = memory_order::seq_cst) const noexcept
       _LIBCPP_CHECK_WAIT_MEMORY_ORDER(__order) {
     _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(
         __order == memory_order::relaxed || __order == memory_order::consume || __order == memory_order::acquire ||
             __order == memory_order::seq_cst,
         "atomic_ref: memory order argument to atomic wait operation is invalid");
     std::__atomic_wait(*this, __old, __order);
   }
   _LIBCPP_HIDE_FROM_ABI void notify_one() const noexcept { std::__atomic_notify_one(*this); }
   _LIBCPP_HIDE_FROM_ABI void notify_all() const noexcept { std::__atomic_notify_all(*this); }
 };
 
 template <class _Tp>
 struct __atomic_waitable_traits<__atomic_ref_base<_Tp>> {
   static _LIBCPP_HIDE_FROM_ABI _Tp __atomic_load(const __atomic_ref_base<_Tp>& __a, memory_order __order) {
     return __a.load(__order);
   }
   static _LIBCPP_HIDE_FROM_ABI const _Tp* __atomic_contention_address(const __atomic_ref_base<_Tp>& __a) {
     return __a.__ptr_;
   }
 };
 
 template <class _Tp>
 struct atomic_ref : public __atomic_ref_base<_Tp> {
   static_assert(is_trivially_copyable_v<_Tp>, "std::atomic_ref<T> requires that 'T' be a trivially copyable type");
 
   using __base = __atomic_ref_base<_Tp>;
 
   _LIBCPP_HIDE_FROM_ABI explicit atomic_ref(_Tp& __obj) : __base(__obj) {
     _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(
         reinterpret_cast<uintptr_t>(std::addressof(__obj)) % __base::required_alignment == 0,
         "atomic_ref ctor: referenced object must be aligned to required_alignment");
   }
 
   _LIBCPP_HIDE_FROM_ABI atomic_ref(const atomic_ref&) noexcept = default;
 
   _LIBCPP_HIDE_FROM_ABI _Tp operator=(_Tp __desired) const noexcept { return __base::operator=(__desired); }
 
   atomic_ref& operator=(const atomic_ref&) = delete;
 };
 
 template <class _Tp>
   requires(std::integral<_Tp> && !std::same_as<bool, _Tp>)
 struct atomic_ref<_Tp> : public __atomic_ref_base<_Tp> {
   using __base = __atomic_ref_base<_Tp>;
 
-  using difference_type = __base::value_type;
+  using difference_type = typename __base::value_type;
 
   _LIBCPP_HIDE_FROM_ABI explicit atomic_ref(_Tp& __obj) : __base(__obj) {
     _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(
         reinterpret_cast<uintptr_t>(std::addressof(__obj)) % __base::required_alignment == 0,
         "atomic_ref ctor: referenced object must be aligned to required_alignment");
   }
 
   _LIBCPP_HIDE_FROM_ABI atomic_ref(const atomic_ref&) noexcept = default;
 
   _LIBCPP_HIDE_FROM_ABI _Tp operator=(_Tp __desired) const noexcept { return __base::operator=(__desired); }
 
   atomic_ref& operator=(const atomic_ref&) = delete;
 
   _LIBCPP_HIDE_FROM_ABI _Tp fetch_add(_Tp __arg, memory_order __order = memory_order_seq_cst) const noexcept {
     return __atomic_fetch_add(this->__ptr_, __arg, std::__to_gcc_order(__order));
   }
   _LIBCPP_HIDE_FROM_ABI _Tp fetch_sub(_Tp __arg, memory_order __order = memory_order_seq_cst) const noexcept {
     return __atomic_fetch_sub(this->__ptr_, __arg, std::__to_gcc_order(__order));
   }
   _LIBCPP_HIDE_FROM_ABI _Tp fetch_and(_Tp __arg, memory_order __order = memory_order_seq_cst) const noexcept {
     return __atomic_fetch_and(this->__ptr_, __arg, std::__to_gcc_order(__order));
   }
   _LIBCPP_HIDE_FROM_ABI _Tp fetch_or(_Tp __arg, memory_order __order = memory_order_seq_cst) const noexcept {
     return __atomic_fetch_or(this->__ptr_, __arg, std::__to_gcc_order(__order));
   }
   _LIBCPP_HIDE_FROM_ABI _Tp fetch_xor(_Tp __arg, memory_order __order = memory_order_seq_cst) const noexcept {
     return __atomic_fetch_xor(this->__ptr_, __arg, std::__to_gcc_order(__order));
   }
 
   _LIBCPP_HIDE_FROM_ABI _Tp operator++(int) const noexcept { return fetch_add(_Tp(1)); }
   _LIBCPP_HIDE_FROM_ABI _Tp operator--(int) const noexcept { return fetch_sub(_Tp(1)); }
   _LIBCPP_HIDE_FROM_ABI _Tp operator++() const noexcept { return fetch_add(_Tp(1)) + _Tp(1); }
   _LIBCPP_HIDE_FROM_ABI _Tp operator--() const noexcept { return fetch_sub(_Tp(1)) - _Tp(1); }
   _LIBCPP_HIDE_FROM_ABI _Tp operator+=(_Tp __arg) const noexcept { return fetch_add(__arg) + __arg; }
   _LIBCPP_HIDE_FROM_ABI _Tp operator-=(_Tp __arg) const noexcept { return fetch_sub(__arg) - __arg; }
   _LIBCPP_HIDE_FROM_ABI _Tp operator&=(_Tp __arg) const noexcept { return fetch_and(__arg) & __arg; }
   _LIBCPP_HIDE_FROM_ABI _Tp operator|=(_Tp __arg) const noexcept { return fetch_or(__arg) | __arg; }
   _LIBCPP_HIDE_FROM_ABI _Tp operator^=(_Tp __arg) const noexcept { return fetch_xor(__arg) ^ __arg; }
 };
 
 template <class _Tp>
   requires std::floating_point<_Tp>
 struct atomic_ref<_Tp> : public __atomic_ref_base<_Tp> {
   using __base = __atomic_ref_base<_Tp>;
 
-  using difference_type = __base::value_type;
+  using difference_type = typename __base::value_type;
 
   _LIBCPP_HIDE_FROM_ABI explicit atomic_ref(_Tp& __obj) : __base(__obj) {
     _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(
         reinterpret_cast<uintptr_t>(std::addressof(__obj)) % __base::required_alignment == 0,
         "atomic_ref ctor: referenced object must be aligned to required_alignment");
   }
 
   _LIBCPP_HIDE_FROM_ABI atomic_ref(const atomic_ref&) noexcept = default;
 
   _LIBCPP_HIDE_FROM_ABI _Tp operator=(_Tp __desired) const noexcept { return __base::operator=(__desired); }
 
   atomic_ref& operator=(const atomic_ref&) = delete;
 
   _LIBCPP_HIDE_FROM_ABI _Tp fetch_add(_Tp __arg, memory_order __order = memory_order_seq_cst) const noexcept {
     _Tp __old = this->load(memory_order_relaxed);
     _Tp __new = __old + __arg;
     while (!this->compare_exchange_weak(__old, __new, __order, memory_order_relaxed)) {
       __new = __old + __arg;
     }
     return __old;
   }
   _LIBCPP_HIDE_FROM_ABI _Tp fetch_sub(_Tp __arg, memory_order __order = memory_order_seq_cst) const noexcept {
     _Tp __old = this->load(memory_order_relaxed);
     _Tp __new = __old - __arg;
     while (!this->compare_exchange_weak(__old, __new, __order, memory_order_relaxed)) {
       __new = __old - __arg;
     }
     return __old;
   }
 
   _LIBCPP_HIDE_FROM_ABI _Tp operator+=(_Tp __arg) const noexcept { return fetch_add(__arg) + __arg; }
   _LIBCPP_HIDE_FROM_ABI _Tp operator-=(_Tp __arg) const noexcept { return fetch_sub(__arg) - __arg; }
 };
 
 template <class _Tp>
 struct atomic_ref<_Tp*> : public __atomic_ref_base<_Tp*> {
   using __base = __atomic_ref_base<_Tp*>;
 
   using difference_type = ptrdiff_t;
 
   _LIBCPP_HIDE_FROM_ABI explicit atomic_ref(_Tp*& __ptr) : __base(__ptr) {}
 
   _LIBCPP_HIDE_FROM_ABI _Tp* operator=(_Tp* __desired) const noexcept { return __base::operator=(__desired); }
 
   atomic_ref& operator=(const atomic_ref&) = delete;
 
   _LIBCPP_HIDE_FROM_ABI _Tp* fetch_add(ptrdiff_t __arg, memory_order __order = memory_order_seq_cst) const noexcept {
     return __atomic_fetch_add(this->__ptr_, __arg * sizeof(_Tp), std::__to_gcc_order(__order));
   }
   _LIBCPP_HIDE_FROM_ABI _Tp* fetch_sub(ptrdiff_t __arg, memory_order __order = memory_order_seq_cst) const noexcept {
     return __atomic_fetch_sub(this->__ptr_, __arg * sizeof(_Tp), std::__to_gcc_order(__order));
   }
 
   _LIBCPP_HIDE_FROM_ABI _Tp* operator++(int) const noexcept { return fetch_add(1); }
   _LIBCPP_HIDE_FROM_ABI _Tp* operator--(int) const noexcept { return fetch_sub(1); }
   _LIBCPP_HIDE_FROM_ABI _Tp* operator++() const noexcept { return fetch_add(1) + 1; }
   _LIBCPP_HIDE_FROM_ABI _Tp* operator--() const noexcept { return fetch_sub(1) - 1; }
   _LIBCPP_HIDE_FROM_ABI _Tp* operator+=(ptrdiff_t __arg) const noexcept { return fetch_add(__arg) + __arg; }
   _LIBCPP_HIDE_FROM_ABI _Tp* operator-=(ptrdiff_t __arg) const noexcept { return fetch_sub(__arg) - __arg; }
 };
 
 _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(atomic_ref);
 
 #endif // _LIBCPP_STD_VER >= 20
 
 _LIBCPP_END_NAMESPACE_STD
 
 _LIBCPP_POP_MACROS
 
 #endif // _LIBCPP__ATOMIC_ATOMIC_REF_H