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libstdc++: Add always_inline to trivial iterator operations

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libstdc++-v3/ChangeLog:

	* include/bits/stl_iterator_base_funcs.h (__distance):
	Add always_inline attribute to overload for random
	access iterators.
	(advance, distance, next, prev): Add always_inline attribute to
	inline functions that just forward to another function.
This commit is contained in:
Jonathan Wakely 2022-11-24 21:13:36 +00:00
parent 71f3036b8a
commit 6bd8d11922
1 changed files with 5 additions and 3 deletions
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8
libstdc++-v3/include/bits/stl_iterator_base_funcs.h
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@ -94,6 +94,7 @@ _GLIBCXX_END_NAMESPACE_CONTAINER
}
template<typename _RandomAccessIterator>
__attribute__((__always_inline__))
inline _GLIBCXX14_CONSTEXPR
typename iterator_traits<_RandomAccessIterator>::difference_type
__distance(_RandomAccessIterator __first, _RandomAccessIterator __last,
@ -141,7 +142,7 @@ _GLIBCXX_END_NAMESPACE_CONTAINER
* and are constant time. For other %iterator classes they are linear time.
*/
template<typename _InputIterator>
_GLIBCXX_NODISCARD
_GLIBCXX_NODISCARD __attribute__((__always_inline__))
inline _GLIBCXX17_CONSTEXPR
typename iterator_traits<_InputIterator>::difference_type
distance(_InputIterator __first, _InputIterator __last)
@ -214,6 +215,7 @@ _GLIBCXX_END_NAMESPACE_CONTAINER
* and are constant time. For other %iterator classes they are linear time.
*/
template<typename _InputIterator, typename _Distance>
__attribute__((__always_inline__))
inline _GLIBCXX17_CONSTEXPR void
advance(_InputIterator& __i, _Distance __n)
{
@ -225,7 +227,7 @@ _GLIBCXX_END_NAMESPACE_CONTAINER
#if __cplusplus >= 201103L
template<typename _InputIterator>
_GLIBCXX_NODISCARD
_GLIBCXX_NODISCARD [[__gnu__::__always_inline__]]
inline _GLIBCXX17_CONSTEXPR _InputIterator
next(_InputIterator __x, typename
iterator_traits<_InputIterator>::difference_type __n = 1)
@ -237,7 +239,7 @@ _GLIBCXX_END_NAMESPACE_CONTAINER
}
template<typename _BidirectionalIterator>
_GLIBCXX_NODISCARD
_GLIBCXX_NODISCARD [[__gnu__::__always_inline__]]
inline _GLIBCXX17_CONSTEXPR _BidirectionalIterator
prev(_BidirectionalIterator __x, typename
iterator_traits<_BidirectionalIterator>::difference_type __n = 1)