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| author | Ken Matsui <kmatsui@gcc.gnu.org> | 2023-03-30 02:13:49 -0700 |
|---|---|---|
| committer | Ken Matsui <kmatsui@gcc.gnu.org> | 2023-12-16 08:59:39 -0800 |
| commit | 4b111013654e745e8d73bd9614a15efbfd19ae8c (patch) | |
| tree | b94afcf9dc1fd993c76e9e7ebbba4681b270974b | |
| parent | cdd4387c5b6aeace2e58318691a5880d29157db9 (diff) | |
| download | gcc-4b111013654e745e8d73bd9614a15efbfd19ae8c.zip gcc-4b111013654e745e8d73bd9614a15efbfd19ae8c.tar.gz gcc-4b111013654e745e8d73bd9614a15efbfd19ae8c.tar.bz2 | |
libstdc++: Optimize std::is_object compilation performance
This patch optimizes the compilation performance of std::is_object
by dispatching to the new __is_object built-in trait.
libstdc++-v3/ChangeLog:
* include/std/type_traits (is_object): Use __is_object built-in
trait.
(is_object_v): Likewise.
Signed-off-by: Ken Matsui <kmatsui@gcc.gnu.org>
Reviewed-by: Jonathan Wakely <jwakely@redhat.com>
| -rw-r--r-- | libstdc++-v3/include/std/type_traits | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index b6d0441..2979d79 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -725,11 +725,18 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION { }; /// is_object +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_object) + template<typename _Tp> + struct is_object + : public __bool_constant<__is_object(_Tp)> + { }; +#else template<typename _Tp> struct is_object : public __not_<__or_<is_function<_Tp>, is_reference<_Tp>, is_void<_Tp>>>::type { }; +#endif template<typename> struct is_member_pointer; @@ -3280,8 +3287,15 @@ template <typename _Tp> inline constexpr bool is_arithmetic_v = is_arithmetic<_Tp>::value; template <typename _Tp> inline constexpr bool is_fundamental_v = is_fundamental<_Tp>::value; + +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_object) +template <typename _Tp> + inline constexpr bool is_object_v = __is_object(_Tp); +#else template <typename _Tp> inline constexpr bool is_object_v = is_object<_Tp>::value; +#endif + template <typename _Tp> inline constexpr bool is_scalar_v = is_scalar<_Tp>::value; template <typename _Tp> |