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| author | Ken Matsui <kmatsui@gcc.gnu.org> | 2024-02-15 00:49:55 -0800 |
|---|---|---|
| committer | Ken Matsui <kmatsui@gcc.gnu.org> | 2024-06-13 07:00:13 -0700 |
| commit | 3f3eb16743a126ebe6d200ad0091495b6f11962a (patch) | |
| tree | e6647738a9b0bc37b13b79b9205cd42636283ab9 | |
| parent | 13a07c1420b35ac7649f7d8a776b553ec5c26269 (diff) | |
| download | gcc-3f3eb16743a126ebe6d200ad0091495b6f11962a.zip gcc-3f3eb16743a126ebe6d200ad0091495b6f11962a.tar.gz gcc-3f3eb16743a126ebe6d200ad0091495b6f11962a.tar.bz2 | |
libstdc++: Optimize std::add_rvalue_reference compilation performance
This patch optimizes the compilation performance of
std::add_rvalue_reference by dispatching to the new
__add_rvalue_reference built-in trait.
libstdc++-v3/ChangeLog:
* include/std/type_traits (__add_rval_ref_t): Use
__add_rvalue_reference built-in trait.
Signed-off-by: Ken Matsui <kmatsui@gcc.gnu.org>
Reviewed-by: Patrick Palka <ppalka@redhat.com>
Reviewed-by: Jonathan Wakely <jwakely@redhat.com>
| -rw-r--r-- | libstdc++-v3/include/std/type_traits | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 79983ea..a31de2e 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -1184,6 +1184,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION }; /// @cond undocumented +#if _GLIBCXX_USE_BUILTIN_TRAIT(__add_rvalue_reference) + template<typename _Tp> + using __add_rval_ref_t = __add_rvalue_reference(_Tp); +#else template<typename _Tp, typename = void> struct __add_rvalue_reference_helper { using type = _Tp; }; @@ -1194,6 +1198,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION template<typename _Tp> using __add_rval_ref_t = typename __add_rvalue_reference_helper<_Tp>::type; +#endif /// @endcond /// is_move_constructible |