diff --git a/libcxx/include/CMakeLists.txt b/libcxx/include/CMakeLists.txt
--- a/libcxx/include/CMakeLists.txt
+++ b/libcxx/include/CMakeLists.txt
@@ -379,6 +379,7 @@
   __locale
   __mbstate_t.h
   __memory/addressof.h
+  __memory/align.h
   __memory/allocate_at_least.h
   __memory/allocation_guard.h
   __memory/allocator.h
@@ -386,15 +387,18 @@
   __memory/allocator_traits.h
   __memory/assume_aligned.h
   __memory/auto_ptr.h
+  __memory/builtin_new_allocator.h
   __memory/compressed_pair.h
   __memory/concepts.h
   __memory/construct_at.h
+  __memory/destruct_n.h
   __memory/pointer_traits.h
   __memory/ranges_construct_at.h
   __memory/ranges_uninitialized_algorithms.h
   __memory/raw_storage_iterator.h
   __memory/shared_ptr.h
   __memory/swap_allocator.h
+  __memory/temp_value.h
   __memory/temporary_buffer.h
   __memory/uninitialized_algorithms.h
   __memory/unique_ptr.h
@@ -537,6 +541,7 @@
   __type_traits/integral_constant.h
   __type_traits/is_abstract.h
   __type_traits/is_aggregate.h
+  __type_traits/is_allocator.h
   __type_traits/is_arithmetic.h
   __type_traits/is_array.h
   __type_traits/is_assignable.h
@@ -619,6 +624,7 @@
   __type_traits/maybe_const.h
   __type_traits/nat.h
   __type_traits/negation.h
+  __type_traits/noexcept_move_assign_container.h
   __type_traits/promote.h
   __type_traits/rank.h
   __type_traits/remove_all_extents.h
diff --git a/libcxx/include/__algorithm/inplace_merge.h b/libcxx/include/__algorithm/inplace_merge.h
--- a/libcxx/include/__algorithm/inplace_merge.h
+++ b/libcxx/include/__algorithm/inplace_merge.h
@@ -23,7 +23,11 @@
 #include <__iterator/distance.h>
 #include <__iterator/iterator_traits.h>
 #include <__iterator/reverse_iterator.h>
-#include <memory>
+#include <__memory/destruct_n.h>
+#include <__memory/temporary_buffer.h>
+#include <__memory/unique_ptr.h>
+#include <__utility/pair.h>
+#include <new>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/__algorithm/ranges_copy.h b/libcxx/include/__algorithm/ranges_copy.h
--- a/libcxx/include/__algorithm/ranges_copy.h
+++ b/libcxx/include/__algorithm/ranges_copy.h
@@ -18,6 +18,7 @@
 #include <__ranges/concepts.h>
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
+#include <__utility/pair.h>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/__algorithm/ranges_equal_range.h b/libcxx/include/__algorithm/ranges_equal_range.h
--- a/libcxx/include/__algorithm/ranges_equal_range.h
+++ b/libcxx/include/__algorithm/ranges_equal_range.h
@@ -24,6 +24,7 @@
 #include <__ranges/subrange.h>
 #include <__utility/forward.h>
 #include <__utility/move.h>
+#include <__utility/pair.h>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/__algorithm/ranges_find_end.h b/libcxx/include/__algorithm/ranges_find_end.h
--- a/libcxx/include/__algorithm/ranges_find_end.h
+++ b/libcxx/include/__algorithm/ranges_find_end.h
@@ -21,6 +21,7 @@
 #include <__ranges/access.h>
 #include <__ranges/concepts.h>
 #include <__ranges/subrange.h>
+#include <__utility/pair.h>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/__algorithm/ranges_minmax.h b/libcxx/include/__algorithm/ranges_minmax.h
--- a/libcxx/include/__algorithm/ranges_minmax.h
+++ b/libcxx/include/__algorithm/ranges_minmax.h
@@ -23,6 +23,7 @@
 #include <__ranges/concepts.h>
 #include <__utility/forward.h>
 #include <__utility/move.h>
+#include <__utility/pair.h>
 #include <initializer_list>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
diff --git a/libcxx/include/__algorithm/ranges_next_permutation.h b/libcxx/include/__algorithm/ranges_next_permutation.h
--- a/libcxx/include/__algorithm/ranges_next_permutation.h
+++ b/libcxx/include/__algorithm/ranges_next_permutation.h
@@ -22,6 +22,7 @@
 #include <__ranges/concepts.h>
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
+#include <__utility/pair.h>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/__algorithm/ranges_partial_sort.h b/libcxx/include/__algorithm/ranges_partial_sort.h
--- a/libcxx/include/__algorithm/ranges_partial_sort.h
+++ b/libcxx/include/__algorithm/ranges_partial_sort.h
@@ -27,6 +27,7 @@
 #include <__ranges/dangling.h>
 #include <__utility/forward.h>
 #include <__utility/move.h>
+#include <__utility/pair.h>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/__algorithm/ranges_partial_sort_copy.h b/libcxx/include/__algorithm/ranges_partial_sort_copy.h
--- a/libcxx/include/__algorithm/ranges_partial_sort_copy.h
+++ b/libcxx/include/__algorithm/ranges_partial_sort_copy.h
@@ -24,6 +24,7 @@
 #include <__ranges/concepts.h>
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
+#include <__utility/pair.h>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/__algorithm/ranges_partition.h b/libcxx/include/__algorithm/ranges_partition.h
--- a/libcxx/include/__algorithm/ranges_partition.h
+++ b/libcxx/include/__algorithm/ranges_partition.h
@@ -26,6 +26,7 @@
 #include <__ranges/subrange.h>
 #include <__utility/forward.h>
 #include <__utility/move.h>
+#include <__utility/pair.h>
 #include <type_traits>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
diff --git a/libcxx/include/__algorithm/ranges_prev_permutation.h b/libcxx/include/__algorithm/ranges_prev_permutation.h
--- a/libcxx/include/__algorithm/ranges_prev_permutation.h
+++ b/libcxx/include/__algorithm/ranges_prev_permutation.h
@@ -22,6 +22,7 @@
 #include <__ranges/concepts.h>
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
+#include <__utility/pair.h>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/__algorithm/ranges_search.h b/libcxx/include/__algorithm/ranges_search.h
--- a/libcxx/include/__algorithm/ranges_search.h
+++ b/libcxx/include/__algorithm/ranges_search.h
@@ -22,6 +22,7 @@
 #include <__ranges/concepts.h>
 #include <__ranges/size.h>
 #include <__ranges/subrange.h>
+#include <__utility/pair.h>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/__algorithm/ranges_search_n.h b/libcxx/include/__algorithm/ranges_search_n.h
--- a/libcxx/include/__algorithm/ranges_search_n.h
+++ b/libcxx/include/__algorithm/ranges_search_n.h
@@ -25,6 +25,7 @@
 #include <__ranges/size.h>
 #include <__ranges/subrange.h>
 #include <__utility/move.h>
+#include <__utility/pair.h>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/__algorithm/ranges_set_difference.h b/libcxx/include/__algorithm/ranges_set_difference.h
--- a/libcxx/include/__algorithm/ranges_set_difference.h
+++ b/libcxx/include/__algorithm/ranges_set_difference.h
@@ -23,6 +23,7 @@
 #include <__ranges/dangling.h>
 #include <__type_traits/decay.h>
 #include <__utility/move.h>
+#include <__utility/pair.h>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/__algorithm/ranges_unique.h b/libcxx/include/__algorithm/ranges_unique.h
--- a/libcxx/include/__algorithm/ranges_unique.h
+++ b/libcxx/include/__algorithm/ranges_unique.h
@@ -26,6 +26,7 @@
 #include <__ranges/subrange.h>
 #include <__utility/forward.h>
 #include <__utility/move.h>
+#include <__utility/pair.h>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/__algorithm/ranges_unique_copy.h b/libcxx/include/__algorithm/ranges_unique_copy.h
--- a/libcxx/include/__algorithm/ranges_unique_copy.h
+++ b/libcxx/include/__algorithm/ranges_unique_copy.h
@@ -27,6 +27,7 @@
 #include <__ranges/dangling.h>
 #include <__utility/forward.h>
 #include <__utility/move.h>
+#include <__utility/pair.h>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/__algorithm/set_symmetric_difference.h b/libcxx/include/__algorithm/set_symmetric_difference.h
--- a/libcxx/include/__algorithm/set_symmetric_difference.h
+++ b/libcxx/include/__algorithm/set_symmetric_difference.h
@@ -15,6 +15,7 @@
 #include <__config>
 #include <__iterator/iterator_traits.h>
 #include <__utility/move.h>
+#include <__utility/pair.h>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/__algorithm/set_union.h b/libcxx/include/__algorithm/set_union.h
--- a/libcxx/include/__algorithm/set_union.h
+++ b/libcxx/include/__algorithm/set_union.h
@@ -15,6 +15,7 @@
 #include <__config>
 #include <__iterator/iterator_traits.h>
 #include <__utility/move.h>
+#include <__utility/pair.h>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/__algorithm/sort.h b/libcxx/include/__algorithm/sort.h
--- a/libcxx/include/__algorithm/sort.h
+++ b/libcxx/include/__algorithm/sort.h
@@ -22,8 +22,9 @@
 #include <__functional/operations.h>
 #include <__functional/ranges_operations.h>
 #include <__iterator/iterator_traits.h>
+#include <__memory/destruct_n.h>
+#include <__memory/unique_ptr.h>
 #include <climits>
-#include <memory>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/__algorithm/stable_partition.h b/libcxx/include/__algorithm/stable_partition.h
--- a/libcxx/include/__algorithm/stable_partition.h
+++ b/libcxx/include/__algorithm/stable_partition.h
@@ -15,7 +15,11 @@
 #include <__iterator/advance.h>
 #include <__iterator/distance.h>
 #include <__iterator/iterator_traits.h>
-#include <memory>
+#include <__memory/destruct_n.h>
+#include <__memory/temporary_buffer.h>
+#include <__memory/unique_ptr.h>
+#include <__utility/pair.h>
+#include <new>
 #include <type_traits>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
diff --git a/libcxx/include/__algorithm/stable_sort.h b/libcxx/include/__algorithm/stable_sort.h
--- a/libcxx/include/__algorithm/stable_sort.h
+++ b/libcxx/include/__algorithm/stable_sort.h
@@ -16,8 +16,12 @@
 #include <__algorithm/sort.h>
 #include <__config>
 #include <__iterator/iterator_traits.h>
+#include <__memory/destruct_n.h>
+#include <__memory/temporary_buffer.h>
+#include <__memory/unique_ptr.h>
 #include <__utility/move.h>
-#include <memory>
+#include <__utility/pair.h>
+#include <new>
 #include <type_traits>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
diff --git a/libcxx/include/__bsd_locale_fallbacks.h b/libcxx/include/__bsd_locale_fallbacks.h
--- a/libcxx/include/__bsd_locale_fallbacks.h
+++ b/libcxx/include/__bsd_locale_fallbacks.h
@@ -13,7 +13,6 @@
 #ifndef _LIBCPP___BSD_LOCALE_FALLBACKS_H
 #define _LIBCPP___BSD_LOCALE_FALLBACKS_H
 
-#include <memory>
 #include <stdarg.h>
 #include <stdlib.h>
 
diff --git a/libcxx/include/__filesystem/filesystem_error.h b/libcxx/include/__filesystem/filesystem_error.h
--- a/libcxx/include/__filesystem/filesystem_error.h
+++ b/libcxx/include/__filesystem/filesystem_error.h
@@ -14,6 +14,7 @@
 #include <__config>
 #include <__filesystem/path.h>
 #include <__memory/shared_ptr.h>
+#include <__utility/forward.h>
 #include <iosfwd>
 #include <new>
 #include <system_error>
diff --git a/libcxx/include/__format/format_arg_store.h b/libcxx/include/__format/format_arg_store.h
--- a/libcxx/include/__format/format_arg_store.h
+++ b/libcxx/include/__format/format_arg_store.h
@@ -19,6 +19,7 @@
 #include <__config>
 #include <__format/concepts.h>
 #include <__format/format_arg.h>
+#include <__utility/forward.h>
 #include <cstring>
 #include <string>
 #include <string_view>
diff --git a/libcxx/include/__functional/function.h b/libcxx/include/__functional/function.h
--- a/libcxx/include/__functional/function.h
+++ b/libcxx/include/__functional/function.h
@@ -17,15 +17,19 @@
 #include <__functional/unary_function.h>
 #include <__iterator/iterator_traits.h>
 #include <__memory/addressof.h>
+#include <__memory/allocator.h>
 #include <__memory/allocator_traits.h>
+#include <__memory/builtin_new_allocator.h>
 #include <__memory/compressed_pair.h>
 #include <__memory/shared_ptr.h>
 #include <__utility/forward.h>
 #include <__utility/move.h>
+#include <__utility/piecewise_construct.h>
 #include <__utility/swap.h>
 #include <exception>
-#include <memory> // TODO: replace with <__memory/__builtin_new_allocator.h>
+#include <tuple>
 #include <type_traits>
+#include <typeinfo>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/__hash_table b/libcxx/include/__hash_table
--- a/libcxx/include/__hash_table
+++ b/libcxx/include/__hash_table
@@ -18,12 +18,19 @@
 #include <__debug>
 #include <__functional/hash.h>
 #include <__iterator/iterator_traits.h>
+#include <__memory/addressof.h>
+#include <__memory/allocator_traits.h>
+#include <__memory/compressed_pair.h>
+#include <__memory/pointer_traits.h>
 #include <__memory/swap_allocator.h>
+#include <__memory/unique_ptr.h>
 #include <__type_traits/can_extract_key.h>
+#include <__utility/forward.h>
+#include <__utility/move.h>
+#include <__utility/pair.h>
 #include <__utility/swap.h>
 #include <cmath>
 #include <initializer_list>
-#include <memory>
 #include <type_traits>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
diff --git a/libcxx/include/__locale b/libcxx/include/__locale
--- a/libcxx/include/__locale
+++ b/libcxx/include/__locale
@@ -12,10 +12,10 @@
 
 #include <__availability>
 #include <__config>
+#include <__memory/shared_ptr.h>
 #include <cctype>
 #include <cstdint>
 #include <locale.h>
-#include <memory>
 #include <mutex>
 #include <string>
 
diff --git a/libcxx/include/__memory/align.h b/libcxx/include/__memory/align.h
new file mode 100644
--- /dev/null
+++ b/libcxx/include/__memory/align.h
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___MEMORY_ALIGN_H
+#define _LIBCPP___MEMORY_ALIGN_H
+
+#include <__config>
+#include <cstddef>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+_LIBCPP_FUNC_VIS void* align(size_t __align, size_t __sz, void*& __ptr, size_t& __space);
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___MEMORY_ALIGN_H
diff --git a/libcxx/include/__memory/builtin_new_allocator.h b/libcxx/include/__memory/builtin_new_allocator.h
new file mode 100644
--- /dev/null
+++ b/libcxx/include/__memory/builtin_new_allocator.h
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___MEMORY_BUILTIN_NEW_ALLOCATOR_H
+#define _LIBCPP___MEMORY_BUILTIN_NEW_ALLOCATOR_H
+
+#include <__config>
+#include <__memory/unique_ptr.h>
+#include <cstddef>
+#include <new>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+// __builtin_new_allocator -- A non-templated helper for allocating and
+// deallocating memory using __builtin_operator_new and
+// __builtin_operator_delete. It should be used in preference to
+// `std::allocator<T>` to avoid additional instantiations.
+struct __builtin_new_allocator {
+  struct __builtin_new_deleter {
+    typedef void* pointer_type;
+
+    _LIBCPP_CONSTEXPR explicit __builtin_new_deleter(size_t __size, size_t __align)
+        : __size_(__size), __align_(__align) {}
+
+    void operator()(void* __p) const _NOEXCEPT {
+        _VSTD::__libcpp_deallocate(__p, __size_, __align_);
+    }
+
+   private:
+    size_t __size_;
+    size_t __align_;
+  };
+
+  typedef unique_ptr<void, __builtin_new_deleter> __holder_t;
+
+  static __holder_t __allocate_bytes(size_t __s, size_t __align) {
+      return __holder_t(_VSTD::__libcpp_allocate(__s, __align),
+                     __builtin_new_deleter(__s, __align));
+  }
+
+  static void __deallocate_bytes(void* __p, size_t __s,
+                                 size_t __align) _NOEXCEPT {
+      _VSTD::__libcpp_deallocate(__p, __s, __align);
+  }
+
+  template <class _Tp>
+  _LIBCPP_NODEBUG _LIBCPP_ALWAYS_INLINE
+  static __holder_t __allocate_type(size_t __n) {
+      return __allocate_bytes(__n * sizeof(_Tp), _LIBCPP_ALIGNOF(_Tp));
+  }
+
+  template <class _Tp>
+  _LIBCPP_NODEBUG _LIBCPP_ALWAYS_INLINE
+  static void __deallocate_type(void* __p, size_t __n) _NOEXCEPT {
+      __deallocate_bytes(__p, __n * sizeof(_Tp), _LIBCPP_ALIGNOF(_Tp));
+  }
+};
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___MEMORY_BUILTIN_NEW_ALLOCATOR_H
diff --git a/libcxx/include/__memory/construct_at.h b/libcxx/include/__memory/construct_at.h
--- a/libcxx/include/__memory/construct_at.h
+++ b/libcxx/include/__memory/construct_at.h
@@ -17,6 +17,7 @@
 #include <__memory/voidify.h>
 #include <__utility/forward.h>
 #include <__utility/move.h>
+#include <new>
 #include <type_traits>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
diff --git a/libcxx/include/__memory/destruct_n.h b/libcxx/include/__memory/destruct_n.h
new file mode 100644
--- /dev/null
+++ b/libcxx/include/__memory/destruct_n.h
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___MEMORY_DESTRUCT_N_H
+#define _LIBCPP___MEMORY_DESTRUCT_N_H
+
+#include <__config>
+#include <__type_traits/integral_constant.h>
+#include <__type_traits/is_trivially_destructible.h>
+#include <cstddef>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+struct __destruct_n
+{
+private:
+    size_t __size_;
+
+    template <class _Tp>
+    _LIBCPP_INLINE_VISIBILITY void __process(_Tp* __p, false_type) _NOEXCEPT
+        {for (size_t __i = 0; __i < __size_; ++__i, ++__p) __p->~_Tp();}
+
+    template <class _Tp>
+    _LIBCPP_INLINE_VISIBILITY void __process(_Tp*, true_type) _NOEXCEPT
+        {}
+
+    _LIBCPP_INLINE_VISIBILITY void __incr(false_type) _NOEXCEPT
+        {++__size_;}
+    _LIBCPP_INLINE_VISIBILITY void __incr(true_type) _NOEXCEPT
+        {}
+
+    _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, false_type) _NOEXCEPT
+        {__size_ = __s;}
+    _LIBCPP_INLINE_VISIBILITY void __set(size_t, true_type) _NOEXCEPT
+        {}
+public:
+    _LIBCPP_INLINE_VISIBILITY explicit __destruct_n(size_t __s) _NOEXCEPT
+        : __size_(__s) {}
+
+    template <class _Tp>
+    _LIBCPP_INLINE_VISIBILITY void __incr() _NOEXCEPT
+        {__incr(integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
+
+    template <class _Tp>
+    _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, _Tp*) _NOEXCEPT
+        {__set(__s, integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
+
+    template <class _Tp>
+    _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) _NOEXCEPT
+        {__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
+};
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___MEMORY_DESTRUCT_N_H
diff --git a/libcxx/include/__memory/ranges_construct_at.h b/libcxx/include/__memory/ranges_construct_at.h
--- a/libcxx/include/__memory/ranges_construct_at.h
+++ b/libcxx/include/__memory/ranges_construct_at.h
@@ -22,6 +22,7 @@
 #include <__utility/declval.h>
 #include <__utility/forward.h>
 #include <__utility/move.h>
+#include <new>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/__memory/ranges_uninitialized_algorithms.h b/libcxx/include/__memory/ranges_uninitialized_algorithms.h
--- a/libcxx/include/__memory/ranges_uninitialized_algorithms.h
+++ b/libcxx/include/__memory/ranges_uninitialized_algorithms.h
@@ -24,6 +24,7 @@
 #include <__ranges/concepts.h>
 #include <__ranges/dangling.h>
 #include <__utility/move.h>
+#include <new>
 #include <type_traits>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
diff --git a/libcxx/include/__memory/raw_storage_iterator.h b/libcxx/include/__memory/raw_storage_iterator.h
--- a/libcxx/include/__memory/raw_storage_iterator.h
+++ b/libcxx/include/__memory/raw_storage_iterator.h
@@ -16,6 +16,7 @@
 #include <__memory/addressof.h>
 #include <__utility/move.h>
 #include <cstddef>
+#include <new>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/__memory/shared_ptr.h b/libcxx/include/__memory/shared_ptr.h
--- a/libcxx/include/__memory/shared_ptr.h
+++ b/libcxx/include/__memory/shared_ptr.h
@@ -34,6 +34,7 @@
 #include <cstddef>
 #include <cstdlib> // abort
 #include <iosfwd>
+#include <new>
 #include <stdexcept>
 #include <type_traits>
 #include <typeinfo>
diff --git a/libcxx/include/__memory/temp_value.h b/libcxx/include/__memory/temp_value.h
new file mode 100644
--- /dev/null
+++ b/libcxx/include/__memory/temp_value.h
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___MEMORY_TEMP_VALUE_H
+#define _LIBCPP___MEMORY_TEMP_VALUE_H
+
+#include <__config>
+#include <__memory/addressof.h>
+#include <__memory/allocator_traits.h>
+#include <__type_traits/aligned_storage.h>
+#include <__utility/forward.h>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _Tp, class _Alloc>
+struct __temp_value {
+    typedef allocator_traits<_Alloc> _Traits;
+
+#ifdef _LIBCPP_CXX03_LANG
+    typename aligned_storage<sizeof(_Tp), _LIBCPP_ALIGNOF(_Tp)>::type __v;
+#else
+    union { _Tp __v; };
+#endif
+    _Alloc &__a;
+
+    _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp *__addr() {
+#ifdef _LIBCPP_CXX03_LANG
+        return reinterpret_cast<_Tp*>(std::addressof(__v));
+#else
+        return std::addressof(__v);
+#endif
+    }
+
+    _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp &   get() { return *__addr(); }
+
+    template<class... _Args>
+    _LIBCPP_NO_CFI
+    _LIBCPP_CONSTEXPR_SINCE_CXX20 __temp_value(_Alloc &__alloc, _Args&& ... __args) : __a(__alloc) {
+      _Traits::construct(__a, __addr(), std::forward<_Args>(__args)...);
+    }
+
+    _LIBCPP_CONSTEXPR_SINCE_CXX20 ~__temp_value() { _Traits::destroy(__a, __addr()); }
+};
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___MEMORY_TEMP_VALUE_H
diff --git a/libcxx/include/__memory/uninitialized_algorithms.h b/libcxx/include/__memory/uninitialized_algorithms.h
--- a/libcxx/include/__memory/uninitialized_algorithms.h
+++ b/libcxx/include/__memory/uninitialized_algorithms.h
@@ -24,6 +24,7 @@
 #include <__utility/move.h>
 #include <__utility/pair.h>
 #include <__utility/transaction.h>
+#include <new>
 #include <type_traits>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
diff --git a/libcxx/include/__node_handle b/libcxx/include/__node_handle
--- a/libcxx/include/__node_handle
+++ b/libcxx/include/__node_handle
@@ -60,7 +60,8 @@
 
 #include <__assert>
 #include <__config>
-#include <memory>
+#include <__memory/allocator_traits.h>
+#include <__memory/pointer_traits.h>
 #include <optional>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
diff --git a/libcxx/include/__split_buffer b/libcxx/include/__split_buffer
--- a/libcxx/include/__split_buffer
+++ b/libcxx/include/__split_buffer
@@ -17,11 +17,15 @@
 #include <__iterator/distance.h>
 #include <__iterator/iterator_traits.h>
 #include <__iterator/move_iterator.h>
+#include <__memory/allocate_at_least.h>
 #include <__memory/allocator.h>
+#include <__memory/allocator_traits.h>
 #include <__memory/compressed_pair.h>
+#include <__memory/pointer_traits.h>
+#include <__memory/shared_ptr.h>
 #include <__memory/swap_allocator.h>
 #include <__utility/forward.h>
-#include <memory>
+#include <__utility/move.h>
 #include <type_traits>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
diff --git a/libcxx/include/__tree b/libcxx/include/__tree
--- a/libcxx/include/__tree
+++ b/libcxx/include/__tree
@@ -17,12 +17,17 @@
 #include <__iterator/distance.h>
 #include <__iterator/iterator_traits.h>
 #include <__iterator/next.h>
+#include <__memory/allocator_traits.h>
+#include <__memory/compressed_pair.h>
+#include <__memory/pointer_traits.h>
 #include <__memory/swap_allocator.h>
+#include <__memory/unique_ptr.h>
 #include <__type_traits/can_extract_key.h>
 #include <__utility/forward.h>
+#include <__utility/move.h>
+#include <__utility/pair.h>
 #include <__utility/swap.h>
 #include <limits>
-#include <memory>
 #include <stdexcept>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
diff --git a/libcxx/include/__type_traits/is_allocator.h b/libcxx/include/__type_traits/is_allocator.h
new file mode 100644
--- /dev/null
+++ b/libcxx/include/__type_traits/is_allocator.h
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___TYPE_IS_ALLOCATOR_H
+#define _LIBCPP___TYPE_IS_ALLOCATOR_H
+
+#include <__config>
+#include <__type_traits/integral_constant.h>
+#include <__type_traits/void_t.h>
+#include <__utility/declval.h>
+#include <cstddef>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template<typename _Alloc, typename = void, typename = void>
+struct __is_allocator : false_type {};
+
+template<typename _Alloc>
+struct __is_allocator<_Alloc,
+       typename __void_t<typename _Alloc::value_type>::type,
+       typename __void_t<decltype(declval<_Alloc&>().allocate(size_t(0)))>::type
+     >
+   : true_type {};
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___TYPE_IS_ALLOCATOR_H
diff --git a/libcxx/include/__type_traits/noexcept_move_assign_container.h b/libcxx/include/__type_traits/noexcept_move_assign_container.h
new file mode 100644
--- /dev/null
+++ b/libcxx/include/__type_traits/noexcept_move_assign_container.h
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___TYPE_TRAITS_NOEXCEPT_MOVE_ASSIGN_CONTAINER_H
+#define _LIBCPP___TYPE_TRAITS_NOEXCEPT_MOVE_ASSIGN_CONTAINER_H
+
+#include <__config>
+#include <__memory/allocator_traits.h>
+#include <__type_traits/integral_constant.h>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <typename _Alloc, typename _Traits=allocator_traits<_Alloc> >
+struct __noexcept_move_assign_container : public integral_constant<bool,
+    _Traits::propagate_on_container_move_assignment::value
+#if _LIBCPP_STD_VER > 14
+        || _Traits::is_always_equal::value
+#else
+        && is_nothrow_move_assignable<_Alloc>::value
+#endif
+    > {};
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___TYPE_TRAITS_NOEXCEPT_MOVE_ASSIGN_CONTAINER_H
diff --git a/libcxx/include/algorithm b/libcxx/include/algorithm
--- a/libcxx/include/algorithm
+++ b/libcxx/include/algorithm
@@ -1709,7 +1709,6 @@
 #include <__debug>
 #include <cstddef>
 #include <cstring>
-#include <memory>
 #include <type_traits>
 #include <version>
 
@@ -1900,8 +1899,11 @@
 #include <__algorithm/upper_bound.h>
 
 #ifndef _LIBCPP_REMOVE_TRANSITIVE_INCLUDES
+#  include <atomic>
 #  include <chrono>
 #  include <iterator>
+#  include <memory>
+#  include <stdexcept>
 #  include <utility>
 #endif
 
@@ -1913,7 +1915,7 @@
 #endif
 
 #if defined(_LIBCPP_HAS_PARALLEL_ALGORITHMS) && _LIBCPP_STD_VER >= 17
-#   include <__pstl_algorithm>
+#  include <__pstl_algorithm>
 #endif
 
 #endif // _LIBCPP_ALGORITHM
diff --git a/libcxx/include/any b/libcxx/include/any
--- a/libcxx/include/any
+++ b/libcxx/include/any
@@ -83,19 +83,25 @@
 #include <__assert> // all public C++ headers provide the assertion handler
 #include <__availability>
 #include <__config>
+#include <__memory/allocator.h>
+#include <__memory/allocator_traits.h>
+#include <__memory/shared_ptr.h>
+#include <__memory/unique_ptr.h>
 #include <__utility/forward.h>
 #include <__utility/in_place.h>
 #include <__utility/move.h>
 #include <__utility/unreachable.h>
 #include <cstdlib>
 #include <initializer_list>
-#include <memory>
 #include <type_traits>
 #include <typeinfo>
 #include <version>
 
 #ifndef _LIBCPP_REMOVE_TRANSITIVE_INCLUDES
 #  include <chrono>
+#  include <iterator>
+#  include <memory>
+#  include <variant>
 #endif
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
diff --git a/libcxx/include/barrier b/libcxx/include/barrier
--- a/libcxx/include/barrier
+++ b/libcxx/include/barrier
@@ -48,10 +48,19 @@
 #include <__assert> // all public C++ headers provide the assertion handler
 #include <__availability>
 #include <__config>
+#include <__memory/unique_ptr.h>
 #include <__thread/timed_backoff_policy.h>
+#include <__utility/move.h>
 #include <atomic>
 #include <limits>
-#include <memory>
+
+#ifndef _LIBCPP_REMOVE_TRANSITIVE_INCLUDES
+#  include <concepts>
+#  include <iterator>
+#  include <memory>
+#  include <stdexcept>
+#  include <variant>
+#endif
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/condition_variable b/libcxx/include/condition_variable
--- a/libcxx/include/condition_variable
+++ b/libcxx/include/condition_variable
@@ -108,8 +108,9 @@
 
 #include <__assert> // all public C++ headers provide the assertion handler
 #include <__config>
+#include <__memory/shared_ptr.h>
+#include <__memory/unique_ptr.h>
 #include <__mutex_base>
-#include <memory>
 #include <version>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
diff --git a/libcxx/include/deque b/libcxx/include/deque
--- a/libcxx/include/deque
+++ b/libcxx/include/deque
@@ -176,7 +176,11 @@
 #include <__iterator/next.h>
 #include <__iterator/prev.h>
 #include <__iterator/reverse_iterator.h>
+#include <__memory/pointer_traits.h>
+#include <__memory/temp_value.h>
+#include <__memory/unique_ptr.h>
 #include <__split_buffer>
+#include <__type_traits/is_allocator.h>
 #include <__utility/forward.h>
 #include <__utility/move.h>
 #include <__utility/swap.h>
diff --git a/libcxx/include/experimental/coroutine b/libcxx/include/experimental/coroutine
--- a/libcxx/include/experimental/coroutine
+++ b/libcxx/include/experimental/coroutine
@@ -50,10 +50,29 @@
 #include <__functional/operations.h>
 #include <cstddef>
 #include <experimental/__config>
-#include <memory> // for hash<T*>
 #include <new>
 #include <type_traits>
 
+#ifndef _LIBCPP_REMOVE_TRANSITIVE_INCLUDES
+#  include <atomic>
+#  include <chrono>
+#  include <climits>
+#  include <cmath>
+#  include <compare>
+#  include <concepts>
+#  include <ctime>
+#  include <initializer_list>
+#  include <iosfwd>
+#  include <iterator>
+#  include <memory>
+#  include <ratio>
+#  include <stdexcept>
+#  include <tuple>
+#  include <typeinfo>
+#  include <utility>
+#  include <variant>
+#endif
+
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
 #endif
diff --git a/libcxx/include/experimental/memory_resource b/libcxx/include/experimental/memory_resource
--- a/libcxx/include/experimental/memory_resource
+++ b/libcxx/include/experimental/memory_resource
@@ -65,6 +65,7 @@
  */
 
 #include <__assert> // all public C++ headers provide the assertion handler
+#include <__memory/allocator_traits.h>
 #include <__tuple>
 #include <__utility/move.h>
 #include <cstddef>
@@ -72,11 +73,24 @@
 #include <experimental/__config>
 #include <experimental/__memory>
 #include <limits>
-#include <memory>
 #include <new>
 #include <stdexcept>
+#include <tuple>
 #include <type_traits>
 
+#ifndef _LIBCPP_REMOVE_TRANSITIVE_INCLUDES
+#  include <atomic>
+#  include <chrono>
+#  include <climits>
+#  include <concepts>
+#  include <cstring>
+#  include <ctime>
+#  include <iterator>
+#  include <memory>
+#  include <ratio>
+#  include <variant>
+#endif
+
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
 #endif
diff --git a/libcxx/include/forward_list b/libcxx/include/forward_list
--- a/libcxx/include/forward_list
+++ b/libcxx/include/forward_list
@@ -188,10 +188,18 @@
 #include <__iterator/iterator_traits.h>
 #include <__iterator/move_iterator.h>
 #include <__iterator/next.h>
+#include <__memory/addressof.h>
+#include <__memory/allocator.h>
+#include <__memory/allocator_traits.h>
+#include <__memory/compressed_pair.h>
+#include <__memory/pointer_traits.h>
+#include <__memory/shared_ptr.h>
 #include <__memory/swap_allocator.h>
+#include <__memory/unique_ptr.h>
+#include <__type_traits/is_allocator.h>
 #include <__utility/forward.h>
+#include <__utility/move.h>
 #include <limits>
-#include <memory>
 #include <type_traits>
 #include <version>
 
diff --git a/libcxx/include/fstream b/libcxx/include/fstream
--- a/libcxx/include/fstream
+++ b/libcxx/include/fstream
@@ -192,6 +192,7 @@
 #include <cstring>
 #include <istream>
 #include <ostream>
+#include <typeinfo>
 #include <version>
 
 #if !defined(_LIBCPP_HAS_NO_FILESYSTEM_LIBRARY)
diff --git a/libcxx/include/functional b/libcxx/include/functional
--- a/libcxx/include/functional
+++ b/libcxx/include/functional
@@ -533,7 +533,6 @@
 #include <__utility/forward.h>
 #include <concepts>
 #include <exception>
-#include <memory>
 #include <tuple>
 #include <type_traits>
 #include <typeinfo>
diff --git a/libcxx/include/future b/libcxx/include/future
--- a/libcxx/include/future
+++ b/libcxx/include/future
@@ -372,8 +372,8 @@
 #include <__utility/forward.h>
 #include <__utility/move.h>
 #include <exception>
-#include <memory>
 #include <mutex>
+#include <new>
 #include <system_error>
 #include <thread>
 #include <version>
diff --git a/libcxx/include/list b/libcxx/include/list
--- a/libcxx/include/list
+++ b/libcxx/include/list
@@ -194,12 +194,19 @@
 #include <__iterator/next.h>
 #include <__iterator/prev.h>
 #include <__iterator/reverse_iterator.h>
+#include <__memory/addressof.h>
+#include <__memory/allocator.h>
+#include <__memory/allocator_traits.h>
+#include <__memory/compressed_pair.h>
+#include <__memory/pointer_traits.h>
+#include <__memory/shared_ptr.h>
 #include <__memory/swap_allocator.h>
+#include <__memory/unique_ptr.h>
+#include <__type_traits/is_allocator.h>
 #include <__utility/forward.h>
 #include <__utility/move.h>
 #include <__utility/swap.h>
 #include <limits>
-#include <memory>
 #include <type_traits>
 #include <version>
 
diff --git a/libcxx/include/locale b/libcxx/include/locale
--- a/libcxx/include/locale
+++ b/libcxx/include/locale
@@ -201,13 +201,14 @@
 #include <__iterator/istreambuf_iterator.h>
 #include <__iterator/ostreambuf_iterator.h>
 #include <__locale>
+#include <__memory/unique_ptr.h>
 #include <cstdarg> // TODO: Remove this include
 #include <cstdio>
 #include <cstdlib>
 #include <ctime>
 #include <ios>
 #include <limits>
-#include <memory>
+#include <new>
 #include <streambuf>
 #include <version>
 
diff --git a/libcxx/include/map b/libcxx/include/map
--- a/libcxx/include/map
+++ b/libcxx/include/map
@@ -538,11 +538,14 @@
 #include <__iterator/erase_if_container.h>
 #include <__iterator/iterator_traits.h>
 #include <__iterator/reverse_iterator.h>
+#include <__memory/allocator.h>
 #include <__node_handle>
 #include <__tree>
+#include <__type_traits/is_allocator.h>
 #include <__utility/forward.h>
+#include <__utility/piecewise_construct.h>
 #include <__utility/swap.h>
-#include <memory>
+#include <tuple>
 #include <type_traits>
 #include <version>
 
diff --git a/libcxx/include/memory b/libcxx/include/memory
--- a/libcxx/include/memory
+++ b/libcxx/include/memory
@@ -852,11 +852,10 @@
 
 */
 
-#include <__algorithm/copy.h>
-#include <__algorithm/move.h>
 #include <__assert> // all public C++ headers provide the assertion handler
 #include <__config>
 #include <__memory/addressof.h>
+#include <__memory/align.h>
 #include <__memory/allocate_at_least.h>
 #include <__memory/allocation_guard.h>
 #include <__memory/allocator.h>
@@ -876,19 +875,19 @@
 #include <__memory/uninitialized_algorithms.h>
 #include <__memory/unique_ptr.h>
 #include <__memory/uses_allocator.h>
-#include <cstddef>
-#include <cstdint>
-#include <cstring>
-#include <iosfwd>
-#include <new>
-#include <stdexcept>
-#include <tuple>
-#include <type_traits>
-#include <typeinfo>
 #include <version>
 
 #ifndef _LIBCPP_REMOVE_TRANSITIVE_INCLUDES
+#  include <cstddef>
+#  include <cstdint>
+#  include <cstring>
+#  include <iosfwd>
 #  include <iterator>
+#  include <new>
+#  include <stdexcept>
+#  include <tuple>
+#  include <type_traits>
+#  include <typeinfo>
 #  include <utility>
 #endif
 
@@ -899,147 +898,6 @@
 #  pragma GCC system_header
 #endif
 
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-struct __destruct_n
-{
-private:
-    size_t __size_;
-
-    template <class _Tp>
-    _LIBCPP_INLINE_VISIBILITY void __process(_Tp* __p, false_type) _NOEXCEPT
-        {for (size_t __i = 0; __i < __size_; ++__i, ++__p) __p->~_Tp();}
-
-    template <class _Tp>
-    _LIBCPP_INLINE_VISIBILITY void __process(_Tp*, true_type) _NOEXCEPT
-        {}
-
-    _LIBCPP_INLINE_VISIBILITY void __incr(false_type) _NOEXCEPT
-        {++__size_;}
-    _LIBCPP_INLINE_VISIBILITY void __incr(true_type) _NOEXCEPT
-        {}
-
-    _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, false_type) _NOEXCEPT
-        {__size_ = __s;}
-    _LIBCPP_INLINE_VISIBILITY void __set(size_t, true_type) _NOEXCEPT
-        {}
-public:
-    _LIBCPP_INLINE_VISIBILITY explicit __destruct_n(size_t __s) _NOEXCEPT
-        : __size_(__s) {}
-
-    template <class _Tp>
-    _LIBCPP_INLINE_VISIBILITY void __incr() _NOEXCEPT
-        {__incr(integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
-
-    template <class _Tp>
-    _LIBCPP_INLINE_VISIBILITY void __set(size_t __s, _Tp*) _NOEXCEPT
-        {__set(__s, integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
-
-    template <class _Tp>
-    _LIBCPP_INLINE_VISIBILITY void operator()(_Tp* __p) _NOEXCEPT
-        {__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
-};
-
-_LIBCPP_FUNC_VIS void* align(size_t __align, size_t __sz, void*& __ptr, size_t& __space);
-
-template <typename _Alloc, typename _Traits=allocator_traits<_Alloc> >
-struct __noexcept_move_assign_container : public integral_constant<bool,
-    _Traits::propagate_on_container_move_assignment::value
-#if _LIBCPP_STD_VER > 14
-        || _Traits::is_always_equal::value
-#else
-        && is_nothrow_move_assignable<_Alloc>::value
-#endif
-    > {};
-
-
-template <class _Tp, class _Alloc>
-struct __temp_value {
-    typedef allocator_traits<_Alloc> _Traits;
-
-#ifdef _LIBCPP_CXX03_LANG
-    typename aligned_storage<sizeof(_Tp), _LIBCPP_ALIGNOF(_Tp)>::type __v;
-#else
-    union { _Tp __v; };
-#endif
-    _Alloc &__a;
-
-    _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp *__addr() {
-#ifdef _LIBCPP_CXX03_LANG
-        return reinterpret_cast<_Tp*>(std::addressof(__v));
-#else
-        return std::addressof(__v);
-#endif
-    }
-
-    _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp &   get() { return *__addr(); }
-
-    template<class... _Args>
-    _LIBCPP_NO_CFI
-    _LIBCPP_CONSTEXPR_SINCE_CXX20 __temp_value(_Alloc &__alloc, _Args&& ... __args) : __a(__alloc) {
-      _Traits::construct(__a, __addr(), std::forward<_Args>(__args)...);
-    }
-
-    _LIBCPP_CONSTEXPR_SINCE_CXX20 ~__temp_value() { _Traits::destroy(__a, __addr()); }
-};
-
-template<typename _Alloc, typename = void, typename = void>
-struct __is_allocator : false_type {};
-
-template<typename _Alloc>
-struct __is_allocator<_Alloc,
-       typename __void_t<typename _Alloc::value_type>::type,
-       typename __void_t<decltype(declval<_Alloc&>().allocate(size_t(0)))>::type
-     >
-   : true_type {};
-
-// __builtin_new_allocator -- A non-templated helper for allocating and
-// deallocating memory using __builtin_operator_new and
-// __builtin_operator_delete. It should be used in preference to
-// `std::allocator<T>` to avoid additional instantiations.
-struct __builtin_new_allocator {
-  struct __builtin_new_deleter {
-    typedef void* pointer_type;
-
-    _LIBCPP_CONSTEXPR explicit __builtin_new_deleter(size_t __size, size_t __align)
-        : __size_(__size), __align_(__align) {}
-
-    void operator()(void* __p) const _NOEXCEPT {
-        _VSTD::__libcpp_deallocate(__p, __size_, __align_);
-    }
-
-   private:
-    size_t __size_;
-    size_t __align_;
-  };
-
-  typedef unique_ptr<void, __builtin_new_deleter> __holder_t;
-
-  static __holder_t __allocate_bytes(size_t __s, size_t __align) {
-      return __holder_t(_VSTD::__libcpp_allocate(__s, __align),
-                     __builtin_new_deleter(__s, __align));
-  }
-
-  static void __deallocate_bytes(void* __p, size_t __s,
-                                 size_t __align) _NOEXCEPT {
-      _VSTD::__libcpp_deallocate(__p, __s, __align);
-  }
-
-  template <class _Tp>
-  _LIBCPP_NODEBUG _LIBCPP_ALWAYS_INLINE
-  static __holder_t __allocate_type(size_t __n) {
-      return __allocate_bytes(__n * sizeof(_Tp), _LIBCPP_ALIGNOF(_Tp));
-  }
-
-  template <class _Tp>
-  _LIBCPP_NODEBUG _LIBCPP_ALWAYS_INLINE
-  static void __deallocate_type(void* __p, size_t __n) _NOEXCEPT {
-      __deallocate_bytes(__p, __n * sizeof(_Tp), _LIBCPP_ALIGNOF(_Tp));
-  }
-};
-
-_LIBCPP_END_NAMESPACE_STD
-
 #if defined(_LIBCPP_HAS_PARALLEL_ALGORITHMS) && _LIBCPP_STD_VER >= 17
 #   include <__pstl_memory>
 #endif
diff --git a/libcxx/include/mutex b/libcxx/include/mutex
--- a/libcxx/include/mutex
+++ b/libcxx/include/mutex
@@ -188,11 +188,11 @@
 
 #include <__assert> // all public C++ headers provide the assertion handler
 #include <__config>
+#include <__memory/shared_ptr.h>
 #include <__mutex_base>
 #include <__threading_support>
 #include <__utility/forward.h>
 #include <cstdint>
-#include <memory>
 #ifndef _LIBCPP_CXX03_LANG
 # include <tuple>
 #endif
diff --git a/libcxx/include/ostream b/libcxx/include/ostream
--- a/libcxx/include/ostream
+++ b/libcxx/include/ostream
@@ -165,9 +165,11 @@
 
 #include <__assert> // all public C++ headers provide the assertion handler
 #include <__config>
+#include <__memory/unique_ptr.h>
 #include <bitset>
 #include <ios>
 #include <locale>
+#include <new>
 #include <streambuf>
 #include <version>
 
diff --git a/libcxx/include/regex b/libcxx/include/regex
--- a/libcxx/include/regex
+++ b/libcxx/include/regex
@@ -772,7 +772,6 @@
 #include <__utility/move.h>
 #include <__utility/swap.h>
 #include <deque>
-#include <memory>
 #include <stdexcept>
 #include <string>
 #include <vector>
diff --git a/libcxx/include/scoped_allocator b/libcxx/include/scoped_allocator
--- a/libcxx/include/scoped_allocator
+++ b/libcxx/include/scoped_allocator
@@ -111,10 +111,33 @@
 
 #include <__assert> // all public C++ headers provide the assertion handler
 #include <__config>
+#include <__memory/allocator_traits.h>
+#include <__type_traits/common_type.h>
+#include <__type_traits/enable_if.h>
+#include <__type_traits/integral_constant.h>
+#include <__type_traits/is_constructible.h>
+#include <__type_traits/remove_reference.h>
 #include <__utility/forward.h>
-#include <memory>
+#include <__utility/move.h>
+#include <__utility/pair.h>
+#include <__utility/piecewise_construct.h>
+#include <tuple>
 #include <version>
 
+#ifndef _LIBCPP_REMOVE_TRANSITIVE_INCLUDES
+#  include <atomic>
+#  include <chrono>
+#  include <climits>
+#  include <concepts>
+#  include <cstring>
+#  include <ctime>
+#  include <iterator>
+#  include <memory>
+#  include <ratio>
+#  include <stdexcept>
+#  include <variant>
+#endif
+
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
 #endif
diff --git a/libcxx/include/set b/libcxx/include/set
--- a/libcxx/include/set
+++ b/libcxx/include/set
@@ -480,8 +480,10 @@
 #include <__iterator/erase_if_container.h>
 #include <__iterator/iterator_traits.h>
 #include <__iterator/reverse_iterator.h>
+#include <__memory/allocator.h>
 #include <__node_handle>
 #include <__tree>
+#include <__type_traits/is_allocator.h>
 #include <__utility/forward.h>
 #include <version>
 
diff --git a/libcxx/include/string b/libcxx/include/string
--- a/libcxx/include/string
+++ b/libcxx/include/string
@@ -545,9 +545,15 @@
 #include <__iterator/reverse_iterator.h>
 #include <__iterator/wrap_iter.h>
 #include <__memory/allocate_at_least.h>
+#include <__memory/allocator.h>
+#include <__memory/compressed_pair.h>
+#include <__memory/construct_at.h>
+#include <__memory/pointer_traits.h>
 #include <__memory/swap_allocator.h>
 #include <__string/char_traits.h>
 #include <__string/extern_template_lists.h>
+#include <__type_traits/is_allocator.h>
+#include <__type_traits/noexcept_move_assign_container.h>
 #include <__utility/auto_cast.h>
 #include <__utility/move.h>
 #include <__utility/swap.h>
@@ -559,7 +565,6 @@
 #include <cstring>
 #include <iosfwd>
 #include <limits>
-#include <memory>
 #include <stdexcept>
 #include <string_view>
 #include <type_traits>
diff --git a/libcxx/include/thread b/libcxx/include/thread
--- a/libcxx/include/thread
+++ b/libcxx/include/thread
@@ -86,6 +86,7 @@
 #include <__assert> // all public C++ headers provide the assertion handler
 #include <__config>
 #include <__functional/hash.h>
+#include <__memory/unique_ptr.h>
 #include <__mutex_base>
 #include <__thread/poll_with_backoff.h>
 #include <__thread/timed_backoff_policy.h>
@@ -93,7 +94,6 @@
 #include <__utility/forward.h>
 #include <cstddef>
 #include <iosfwd>
-#include <memory>
 #include <system_error>
 #include <tuple>
 #include <type_traits>
diff --git a/libcxx/include/unordered_map b/libcxx/include/unordered_map
--- a/libcxx/include/unordered_map
+++ b/libcxx/include/unordered_map
@@ -525,7 +525,9 @@
 #include <__iterator/erase_if_container.h>
 #include <__iterator/iterator_traits.h>
 #include <__memory/addressof.h>
+#include <__memory/allocator.h>
 #include <__node_handle>
+#include <__type_traits/is_allocator.h>
 #include <__utility/forward.h>
 #include <stdexcept>
 #include <tuple>
diff --git a/libcxx/include/unordered_set b/libcxx/include/unordered_set
--- a/libcxx/include/unordered_set
+++ b/libcxx/include/unordered_set
@@ -470,7 +470,9 @@
 #include <__iterator/erase_if_container.h>
 #include <__iterator/iterator_traits.h>
 #include <__memory/addressof.h>
+#include <__memory/allocator.h>
 #include <__node_handle>
+#include <__type_traits/is_allocator.h>
 #include <__utility/forward.h>
 #include <version>
 
diff --git a/libcxx/include/vector b/libcxx/include/vector
--- a/libcxx/include/vector
+++ b/libcxx/include/vector
@@ -293,7 +293,11 @@
 #include <__memory/allocate_at_least.h>
 #include <__memory/pointer_traits.h>
 #include <__memory/swap_allocator.h>
+#include <__memory/temp_value.h>
+#include <__memory/uninitialized_algorithms.h>
 #include <__split_buffer>
+#include <__type_traits/is_allocator.h>
+#include <__type_traits/noexcept_move_assign_container.h>
 #include <__utility/forward.h>
 #include <__utility/move.h>
 #include <__utility/swap.h>
@@ -302,7 +306,6 @@
 #include <cstring>
 #include <iosfwd> // for forward declaration of vector
 #include <limits>
-#include <memory>
 #include <stdexcept>
 #include <type_traits>
 #include <version>
diff --git a/libcxx/test/libcxx/memory/compressed_pair/compressed_pair.pass.cpp b/libcxx/test/libcxx/memory/compressed_pair/compressed_pair.pass.cpp
--- a/libcxx/test/libcxx/memory/compressed_pair/compressed_pair.pass.cpp
+++ b/libcxx/test/libcxx/memory/compressed_pair/compressed_pair.pass.cpp
@@ -8,6 +8,7 @@
 
 #include <assert.h>
 #include <memory>
+#include <new>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/libcxx/private_headers.verify.cpp b/libcxx/test/libcxx/private_headers.verify.cpp
--- a/libcxx/test/libcxx/private_headers.verify.cpp
+++ b/libcxx/test/libcxx/private_headers.verify.cpp
@@ -410,6 +410,7 @@
 #include <__locale> // expected-error@*:* {{use of private header from outside its module: '__locale'}}
 #include <__mbstate_t.h> // expected-error@*:* {{use of private header from outside its module: '__mbstate_t.h'}}
 #include <__memory/addressof.h> // expected-error@*:* {{use of private header from outside its module: '__memory/addressof.h'}}
+#include <__memory/align.h> // expected-error@*:* {{use of private header from outside its module: '__memory/align.h'}}
 #include <__memory/allocate_at_least.h> // expected-error@*:* {{use of private header from outside its module: '__memory/allocate_at_least.h'}}
 #include <__memory/allocation_guard.h> // expected-error@*:* {{use of private header from outside its module: '__memory/allocation_guard.h'}}
 #include <__memory/allocator.h> // expected-error@*:* {{use of private header from outside its module: '__memory/allocator.h'}}
@@ -417,15 +418,18 @@
 #include <__memory/allocator_traits.h> // expected-error@*:* {{use of private header from outside its module: '__memory/allocator_traits.h'}}
 #include <__memory/assume_aligned.h> // expected-error@*:* {{use of private header from outside its module: '__memory/assume_aligned.h'}}
 #include <__memory/auto_ptr.h> // expected-error@*:* {{use of private header from outside its module: '__memory/auto_ptr.h'}}
+#include <__memory/builtin_new_allocator.h> // expected-error@*:* {{use of private header from outside its module: '__memory/builtin_new_allocator.h'}}
 #include <__memory/compressed_pair.h> // expected-error@*:* {{use of private header from outside its module: '__memory/compressed_pair.h'}}
 #include <__memory/concepts.h> // expected-error@*:* {{use of private header from outside its module: '__memory/concepts.h'}}
 #include <__memory/construct_at.h> // expected-error@*:* {{use of private header from outside its module: '__memory/construct_at.h'}}
+#include <__memory/destruct_n.h> // expected-error@*:* {{use of private header from outside its module: '__memory/destruct_n.h'}}
 #include <__memory/pointer_traits.h> // expected-error@*:* {{use of private header from outside its module: '__memory/pointer_traits.h'}}
 #include <__memory/ranges_construct_at.h> // expected-error@*:* {{use of private header from outside its module: '__memory/ranges_construct_at.h'}}
 #include <__memory/ranges_uninitialized_algorithms.h> // expected-error@*:* {{use of private header from outside its module: '__memory/ranges_uninitialized_algorithms.h'}}
 #include <__memory/raw_storage_iterator.h> // expected-error@*:* {{use of private header from outside its module: '__memory/raw_storage_iterator.h'}}
 #include <__memory/shared_ptr.h> // expected-error@*:* {{use of private header from outside its module: '__memory/shared_ptr.h'}}
 #include <__memory/swap_allocator.h> // expected-error@*:* {{use of private header from outside its module: '__memory/swap_allocator.h'}}
+#include <__memory/temp_value.h> // expected-error@*:* {{use of private header from outside its module: '__memory/temp_value.h'}}
 #include <__memory/temporary_buffer.h> // expected-error@*:* {{use of private header from outside its module: '__memory/temporary_buffer.h'}}
 #include <__memory/uninitialized_algorithms.h> // expected-error@*:* {{use of private header from outside its module: '__memory/uninitialized_algorithms.h'}}
 #include <__memory/unique_ptr.h> // expected-error@*:* {{use of private header from outside its module: '__memory/unique_ptr.h'}}
@@ -549,6 +553,7 @@
 #include <__type_traits/integral_constant.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/integral_constant.h'}}
 #include <__type_traits/is_abstract.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_abstract.h'}}
 #include <__type_traits/is_aggregate.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_aggregate.h'}}
+#include <__type_traits/is_allocator.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_allocator.h'}}
 #include <__type_traits/is_arithmetic.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_arithmetic.h'}}
 #include <__type_traits/is_array.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_array.h'}}
 #include <__type_traits/is_assignable.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_assignable.h'}}
@@ -631,6 +636,7 @@
 #include <__type_traits/maybe_const.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/maybe_const.h'}}
 #include <__type_traits/nat.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/nat.h'}}
 #include <__type_traits/negation.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/negation.h'}}
+#include <__type_traits/noexcept_move_assign_container.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/noexcept_move_assign_container.h'}}
 #include <__type_traits/promote.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/promote.h'}}
 #include <__type_traits/rank.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/rank.h'}}
 #include <__type_traits/remove_all_extents.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/remove_all_extents.h'}}
diff --git a/libcxx/test/libcxx/utilities/any/allocator.pass.cpp b/libcxx/test/libcxx/utilities/any/allocator.pass.cpp
--- a/libcxx/test/libcxx/utilities/any/allocator.pass.cpp
+++ b/libcxx/test/libcxx/utilities/any/allocator.pass.cpp
@@ -18,6 +18,7 @@
 #include <cassert>
 #include <cstddef>
 #include <memory>
+#include <new>
 #include <type_traits>
 #include <utility>
 
diff --git a/libcxx/test/libcxx/utilities/memory/pointer.conversion/to_address.pass.cpp b/libcxx/test/libcxx/utilities/memory/pointer.conversion/to_address.pass.cpp
--- a/libcxx/test/libcxx/utilities/memory/pointer.conversion/to_address.pass.cpp
+++ b/libcxx/test/libcxx/utilities/memory/pointer.conversion/to_address.pass.cpp
@@ -13,6 +13,8 @@
 
 #include <memory>
 #include <cassert>
+#include <utility>
+
 #include "test_macros.h"
 
 struct Irrelevant;
diff --git a/libcxx/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/function_type_default_deleter.fail.cpp b/libcxx/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/function_type_default_deleter.fail.cpp
--- a/libcxx/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/function_type_default_deleter.fail.cpp
+++ b/libcxx/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/function_type_default_deleter.fail.cpp
@@ -9,6 +9,7 @@
 // UNSUPPORTED: c++03
 
 #include <memory>
+#include <type_traits>
 
 template <int> struct Tag {};
 
diff --git a/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax.pass.cpp b/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax.pass.cpp
--- a/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax.pass.cpp
+++ b/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax.pass.cpp
@@ -14,6 +14,7 @@
 
 #include <algorithm>
 #include <cassert>
+#include <utility>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax_init_list.pass.cpp b/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax_init_list.pass.cpp
--- a/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax_init_list.pass.cpp
+++ b/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax_init_list.pass.cpp
@@ -16,6 +16,7 @@
 
 #include <algorithm>
 #include <cassert>
+#include <utility>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.minmax.pass.cpp b/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.minmax.pass.cpp
--- a/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.minmax.pass.cpp
+++ b/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.minmax.pass.cpp
@@ -28,6 +28,7 @@
 #include <array>
 #include <cassert>
 #include <functional>
+#include <memory>
 #include <ranges>
 
 #include "test_iterators.h"
diff --git a/libcxx/test/std/algorithms/alg.sorting/alg.sort/sort/sort.pass.cpp b/libcxx/test/std/algorithms/alg.sorting/alg.sort/sort/sort.pass.cpp
--- a/libcxx/test/std/algorithms/alg.sorting/alg.sort/sort/sort.pass.cpp
+++ b/libcxx/test/std/algorithms/alg.sorting/alg.sort/sort/sort.pass.cpp
@@ -21,6 +21,7 @@
 #include <cassert>
 #include <vector>
 #include <deque>
+#include <utility>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/push_front_exception_safety.pass.cpp b/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/push_front_exception_safety.pass.cpp
--- a/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/push_front_exception_safety.pass.cpp
+++ b/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/push_front_exception_safety.pass.cpp
@@ -13,6 +13,7 @@
 
 #include <forward_list>
 #include <cassert>
+#include <exception>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/containers/sequences/list/list.modifiers/push_back_exception_safety.pass.cpp b/libcxx/test/std/containers/sequences/list/list.modifiers/push_back_exception_safety.pass.cpp
--- a/libcxx/test/std/containers/sequences/list/list.modifiers/push_back_exception_safety.pass.cpp
+++ b/libcxx/test/std/containers/sequences/list/list.modifiers/push_back_exception_safety.pass.cpp
@@ -13,6 +13,7 @@
 
 #include <list>
 #include <cassert>
+#include <exception>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/containers/sequences/list/list.modifiers/push_front_exception_safety.pass.cpp b/libcxx/test/std/containers/sequences/list/list.modifiers/push_front_exception_safety.pass.cpp
--- a/libcxx/test/std/containers/sequences/list/list.modifiers/push_front_exception_safety.pass.cpp
+++ b/libcxx/test/std/containers/sequences/list/list.modifiers/push_front_exception_safety.pass.cpp
@@ -13,6 +13,7 @@
 
 #include <list>
 #include <cassert>
+#include <exception>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.trivial.awaitables/suspend_always.pass.cpp b/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.trivial.awaitables/suspend_always.pass.cpp
--- a/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.trivial.awaitables/suspend_always.pass.cpp
+++ b/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.trivial.awaitables/suspend_always.pass.cpp
@@ -11,6 +11,7 @@
 #include <experimental/coroutine>
 #include <type_traits>
 #include <cassert>
+#include <utility>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.trivial.awaitables/suspend_never.pass.cpp b/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.trivial.awaitables/suspend_never.pass.cpp
--- a/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.trivial.awaitables/suspend_never.pass.cpp
+++ b/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.trivial.awaitables/suspend_never.pass.cpp
@@ -11,6 +11,7 @@
 #include <experimental/coroutine>
 #include <type_traits>
 #include <cassert>
+#include <utility>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/localization/locales/locale.global.templates/use_facet.pass.cpp b/libcxx/test/std/localization/locales/locale.global.templates/use_facet.pass.cpp
--- a/libcxx/test/std/localization/locales/locale.global.templates/use_facet.pass.cpp
+++ b/libcxx/test/std/localization/locales/locale.global.templates/use_facet.pass.cpp
@@ -12,6 +12,7 @@
 
 #include <locale>
 #include <cassert>
+#include <typeinfo>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/ranges/range.adaptors/range.zip/general.pass.cpp b/libcxx/test/std/ranges/range.adaptors/range.zip/general.pass.cpp
--- a/libcxx/test/std/ranges/range.adaptors/range.zip/general.pass.cpp
+++ b/libcxx/test/std/ranges/range.adaptors/range.zip/general.pass.cpp
@@ -16,6 +16,7 @@
 
 #include <array>
 #include <cassert>
+#include <tuple>
 #include <vector>
 #include <string>
 
diff --git a/libcxx/test/std/strings/basic.string/string.capacity/max_size.pass.cpp b/libcxx/test/std/strings/basic.string/string.capacity/max_size.pass.cpp
--- a/libcxx/test/std/strings/basic.string/string.capacity/max_size.pass.cpp
+++ b/libcxx/test/std/strings/basic.string/string.capacity/max_size.pass.cpp
@@ -20,6 +20,7 @@
 
 #include <string>
 #include <cassert>
+#include <new>
 
 #include "test_macros.h"
 #include "min_allocator.h"
diff --git a/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_F.verify.cpp b/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_F.verify.cpp
--- a/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_F.verify.cpp
+++ b/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_F.verify.cpp
@@ -18,6 +18,7 @@
 
 #include <functional>
 #include <cassert>
+#include <memory>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_function.verify.cpp b/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_function.verify.cpp
--- a/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_function.verify.cpp
+++ b/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_function.verify.cpp
@@ -18,6 +18,7 @@
 
 #include <functional>
 #include <cassert>
+#include <memory>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/construct.pass.cpp b/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/construct.pass.cpp
--- a/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/construct.pass.cpp
+++ b/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/construct.pass.cpp
@@ -20,6 +20,7 @@
 #include <new>
 #include <type_traits>
 #include <cassert>
+#include <utility>
 
 #include "test_macros.h"
 #include "incomplete_type_helper.h"
diff --git a/libcxx/test/std/utilities/memory/default.allocator/allocator.members/allocate.size.pass.cpp b/libcxx/test/std/utilities/memory/default.allocator/allocator.members/allocate.size.pass.cpp
--- a/libcxx/test/std/utilities/memory/default.allocator/allocator.members/allocate.size.pass.cpp
+++ b/libcxx/test/std/utilities/memory/default.allocator/allocator.members/allocate.size.pass.cpp
@@ -14,6 +14,7 @@
 
 #include <memory>
 #include <cassert>
+#include <new>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/utilities/memory/default.allocator/allocator_pointers.pass.cpp b/libcxx/test/std/utilities/memory/default.allocator/allocator_pointers.pass.cpp
--- a/libcxx/test/std/utilities/memory/default.allocator/allocator_pointers.pass.cpp
+++ b/libcxx/test/std/utilities/memory/default.allocator/allocator_pointers.pass.cpp
@@ -10,6 +10,7 @@
 
 #include <memory>
 #include <cassert>
+#include <type_traits>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/utilities/memory/pointer.conversion/to_address.pass.cpp b/libcxx/test/std/utilities/memory/pointer.conversion/to_address.pass.cpp
--- a/libcxx/test/std/utilities/memory/pointer.conversion/to_address.pass.cpp
+++ b/libcxx/test/std/utilities/memory/pointer.conversion/to_address.pass.cpp
@@ -15,6 +15,8 @@
 
 #include <memory>
 #include <cassert>
+#include <utility>
+
 #include "test_macros.h"
 
 struct Irrelevant;
diff --git a/libcxx/test/std/utilities/memory/pointer.traits/pointer.traits.functions/pointer_to.pass.cpp b/libcxx/test/std/utilities/memory/pointer.traits/pointer.traits.functions/pointer_to.pass.cpp
--- a/libcxx/test/std/utilities/memory/pointer.traits/pointer.traits.functions/pointer_to.pass.cpp
+++ b/libcxx/test/std/utilities/memory/pointer.traits/pointer.traits.functions/pointer_to.pass.cpp
@@ -17,6 +17,7 @@
 
 #include <memory>
 #include <cassert>
+#include <type_traits>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/utilities/memory/pointer.traits/pointer_to.pass.cpp b/libcxx/test/std/utilities/memory/pointer.traits/pointer_to.pass.cpp
--- a/libcxx/test/std/utilities/memory/pointer.traits/pointer_to.pass.cpp
+++ b/libcxx/test/std/utilities/memory/pointer.traits/pointer_to.pass.cpp
@@ -17,6 +17,7 @@
 
 #include <memory>
 #include <cassert>
+#include <type_traits>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/utilities/memory/temporary.buffer/overaligned.pass.cpp b/libcxx/test/std/utilities/memory/temporary.buffer/overaligned.pass.cpp
--- a/libcxx/test/std/utilities/memory/temporary.buffer/overaligned.pass.cpp
+++ b/libcxx/test/std/utilities/memory/temporary.buffer/overaligned.pass.cpp
@@ -27,6 +27,7 @@
 
 #include <memory>
 #include <cassert>
+#include <utility>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/utilities/memory/temporary.buffer/temporary_buffer.pass.cpp b/libcxx/test/std/utilities/memory/temporary.buffer/temporary_buffer.pass.cpp
--- a/libcxx/test/std/utilities/memory/temporary.buffer/temporary_buffer.pass.cpp
+++ b/libcxx/test/std/utilities/memory/temporary.buffer/temporary_buffer.pass.cpp
@@ -20,6 +20,7 @@
 
 #include <memory>
 #include <cassert>
+#include <utility>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/shared_ptr_rv.pass.cpp b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/shared_ptr_rv.pass.cpp
--- a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/shared_ptr_rv.pass.cpp
+++ b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/shared_ptr_rv.pass.cpp
@@ -17,6 +17,7 @@
 #include <memory>
 #include <type_traits>
 #include <cassert>
+#include <utility>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/unique_ptr_Y.pass.cpp b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/unique_ptr_Y.pass.cpp
--- a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/unique_ptr_Y.pass.cpp
+++ b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/unique_ptr_Y.pass.cpp
@@ -15,6 +15,7 @@
 #include <memory>
 #include <type_traits>
 #include <cassert>
+#include <utility>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/deduction.pass.cpp b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/deduction.pass.cpp
--- a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/deduction.pass.cpp
+++ b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/deduction.pass.cpp
@@ -16,6 +16,7 @@
 
 #include <memory>
 #include <cassert>
+#include <utility>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_copy_move.fail.cpp b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_copy_move.fail.cpp
--- a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_copy_move.fail.cpp
+++ b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_copy_move.fail.cpp
@@ -14,6 +14,7 @@
 
 #include <memory>
 #include <type_traits>
+#include <utility>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_pointer.pass.cpp b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_pointer.pass.cpp
--- a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_pointer.pass.cpp
+++ b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_pointer.pass.cpp
@@ -14,6 +14,7 @@
 
 #include <memory>
 #include <cassert>
+#include <utility>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_rv.pass.cpp b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_rv.pass.cpp
--- a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_rv.pass.cpp
+++ b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_rv.pass.cpp
@@ -16,6 +16,7 @@
 
 #include <memory>
 #include <cassert>
+#include <utility>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/unique_ptr.pass.cpp b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/unique_ptr.pass.cpp
--- a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/unique_ptr.pass.cpp
+++ b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/unique_ptr.pass.cpp
@@ -16,6 +16,7 @@
 #include <new>
 #include <cstdlib>
 #include <cassert>
+#include <utility>
 
 #include "test_macros.h"
 #include "count_new.h"
diff --git a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared_construct.pass.cpp b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared_construct.pass.cpp
--- a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared_construct.pass.cpp
+++ b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared_construct.pass.cpp
@@ -20,8 +20,10 @@
 
 #include "test_macros.h"
 
-#include <memory>
 #include <cassert>
+#include <memory>
+#include <new>
+#include <utility>
 
 static bool construct_called = false;
 static bool destroy_called = false;
diff --git a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.assign/weak_ptr.pass.cpp b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.assign/weak_ptr.pass.cpp
--- a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.assign/weak_ptr.pass.cpp
+++ b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.assign/weak_ptr.pass.cpp
@@ -15,6 +15,7 @@
 #include <memory>
 #include <type_traits>
 #include <cassert>
+#include <utility>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.const/weak_ptr.pass.cpp b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.const/weak_ptr.pass.cpp
--- a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.const/weak_ptr.pass.cpp
+++ b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.const/weak_ptr.pass.cpp
@@ -16,6 +16,7 @@
 #include <memory>
 #include <type_traits>
 #include <cassert>
+#include <utility>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weakptr/bad_weak_ptr.pass.cpp b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weakptr/bad_weak_ptr.pass.cpp
--- a/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weakptr/bad_weak_ptr.pass.cpp
+++ b/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weakptr/bad_weak_ptr.pass.cpp
@@ -15,6 +15,7 @@
 //     bad_weak_ptr();
 // };
 
+#include <exception>
 #include <memory>
 #include <type_traits>
 #include <cassert>
diff --git a/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/get_deleter.pass.cpp b/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/get_deleter.pass.cpp
--- a/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/get_deleter.pass.cpp
+++ b/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/get_deleter.pass.cpp
@@ -14,6 +14,8 @@
 
 #include <memory>
 #include <cassert>
+#include <type_traits>
+
 #include "test_macros.h"
 
 struct Deleter {
diff --git a/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/move.pass.cpp b/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/move.pass.cpp
--- a/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/move.pass.cpp
+++ b/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/move.pass.cpp
@@ -17,6 +17,7 @@
 #include <tuple>
 #include <utility>
 #include <cassert>
+#include <memory>
 
 #include "test_macros.h"
 #include "MoveOnly.h"
diff --git a/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/tuple.by.type.fail.cpp b/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/tuple.by.type.fail.cpp
--- a/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/tuple.by.type.fail.cpp
+++ b/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/tuple.by.type.fail.cpp
@@ -10,6 +10,8 @@
 
 #include <tuple>
 #include <string>
+#include <memory>
+
 #include "test_macros.h"
 
 struct UserType {};
diff --git a/libcxx/test/support/allocators.h b/libcxx/test/support/allocators.h
--- a/libcxx/test/support/allocators.h
+++ b/libcxx/test/support/allocators.h
@@ -10,6 +10,7 @@
 #define ALLOCATORS_H
 
 #include <memory>
+#include <new>
 #include <type_traits>
 #include <utility>
 
diff --git a/libcxx/test/support/container_test_types.h b/libcxx/test/support/container_test_types.h
--- a/libcxx/test/support/container_test_types.h
+++ b/libcxx/test/support/container_test_types.h
@@ -86,6 +86,7 @@
 
 #include <functional>
 #include <cassert>
+#include <new>
 
 #include "test_macros.h"
 
diff --git a/libcxx/test/support/controlled_allocators.h b/libcxx/test/support/controlled_allocators.h
--- a/libcxx/test/support/controlled_allocators.h
+++ b/libcxx/test/support/controlled_allocators.h
@@ -16,6 +16,8 @@
 #include <cstring>
 #include <cstdint>
 #include <cassert>
+#include <new>
+
 #include "test_macros.h"
 #include "type_id.h"
 
diff --git a/libcxx/test/support/min_allocator.h b/libcxx/test/support/min_allocator.h
--- a/libcxx/test/support/min_allocator.h
+++ b/libcxx/test/support/min_allocator.h
@@ -16,6 +16,7 @@
 #include <climits>
 #include <iterator>
 #include <memory>
+#include <new>
 
 #include "test_macros.h"