@@ -2083,6 +2083,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
#endif
/// remove_all_extents
+#if _GLIBCXX_USE_BUILTIN_TRAIT(__remove_all_extents)
+ template<typename _Tp>
+ struct remove_all_extents
+ { using type = __remove_all_extents(_Tp); };
+#else
template<typename _Tp>
struct remove_all_extents
{ using type = _Tp; };
@@ -2094,6 +2099,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
template<typename _Tp>
struct remove_all_extents<_Tp[]>
{ using type = typename remove_all_extents<_Tp>::type; };
+#endif
#if __cplusplus > 201103L
/// Alias template for remove_extent
This patch optimizes the compilation performance of std::remove_all_extents by dispatching to the new __remove_all_extents built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (remove_all_extents): Use __remove_all_extents built-in trait. Signed-off-by: Ken Matsui <kmatsui@gcc.gnu.org> --- libstdc++-v3/include/std/type_traits | 6 ++++++ 1 file changed, 6 insertions(+)