libstdc++: Add always_inline to trivial iterator operations
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.
diff --git a/libstdc++-v3/include/bits/stl_iterator_base_funcs.h b/libstdc++-v3/include/bits/stl_iterator_base_funcs.h
index 1551b22..25dddb3 100644
--- a/libstdc++-v3/include/bits/stl_iterator_base_funcs.h
+++ b/libstdc++-v3/include/bits/stl_iterator_base_funcs.h
@@ -94,6 +94,7 @@
}
template<typename _RandomAccessIterator>
+ __attribute__((__always_inline__))
inline _GLIBCXX14_CONSTEXPR
typename iterator_traits<_RandomAccessIterator>::difference_type
__distance(_RandomAccessIterator __first, _RandomAccessIterator __last,
@@ -141,7 +142,7 @@
* 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 @@
* 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 @@
#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 @@
}
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)
