[NFC][pstl] Remove unused utility code
llvm-svn: 365346
GitOrigin-RevId: c862ea27b7ac0646e1dafe89a1f275ae7ec2d5e4
diff --git a/include/pstl/internal/parallel_backend_utils.h b/include/pstl/internal/parallel_backend_utils.h
index ced4963..c94cdc4 100644
--- a/include/pstl/internal/parallel_backend_utils.h
+++ b/include/pstl/internal/parallel_backend_utils.h
@@ -136,90 +136,6 @@
}
};
-template <typename _RandomAccessIterator1, typename _OutputIterator>
-void
-__init_buf(_RandomAccessIterator1 __xs, _RandomAccessIterator1 __xe, _OutputIterator __zs, bool __bMove)
-{
- const _OutputIterator __ze = __zs + (__xe - __xs);
- typedef typename std::iterator_traits<_OutputIterator>::value_type _ValueType;
- if (__bMove)
- {
- // Initialize the temporary buffer and move keys to it.
- for (; __zs != __ze; ++__xs, ++__zs)
- new (&*__zs) _ValueType(std::move(*__xs));
- }
- else
- {
- // Initialize the temporary buffer
- for (; __zs != __ze; ++__zs)
- new (&*__zs) _ValueType;
- }
-}
-
-// TODO is this actually used anywhere?
-template <typename _Buf>
-class __stack
-{
- typedef typename std::iterator_traits<decltype(_Buf(0).get())>::value_type _ValueType;
- typedef typename std::iterator_traits<_ValueType*>::difference_type _DifferenceType;
-
- _Buf _M_buf;
- _ValueType* _M_ptr;
- _DifferenceType _M_maxsize;
-
- __stack(const __stack&) = delete;
- void
- operator=(const __stack&) = delete;
-
- public:
- __stack(_DifferenceType __max_size) : _M_buf(__max_size), _M_maxsize(__max_size) { _M_ptr = _M_buf.get(); }
-
- ~__stack()
- {
- assert(size() <= _M_maxsize);
- while (!empty())
- pop();
- }
-
- const _Buf&
- buffer() const
- {
- return _M_buf;
- }
- size_t
- size() const
- {
- assert(_M_ptr - _M_buf.get() <= _M_maxsize);
- assert(_M_ptr - _M_buf.get() >= 0);
- return _M_ptr - _M_buf.get();
- }
- bool
- empty() const
- {
- assert(_M_ptr >= _M_buf.get());
- return _M_ptr == _M_buf.get();
- }
- void
- push(const _ValueType& __v)
- {
- assert(size() < _M_maxsize);
- new (_M_ptr) _ValueType(__v);
- ++_M_ptr;
- }
- const _ValueType&
- top() const
- {
- return *(_M_ptr - 1);
- }
- void
- pop()
- {
- assert(_M_ptr > _M_buf.get());
- --_M_ptr;
- (*_M_ptr).~_ValueType();
- }
-};
-
} // namespace __utils
} // namespace __pstl
