Message ID | 20231207053633.1001720-22-kmatsui@gcc.gnu.org |
---|---|
State | Unresolved |
Headers |
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Series |
[v26,01/23] c++: Sort built-in traits alphabetically
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Checks
Context | Check | Description |
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snail/gcc-patch-check | warning | Git am fail log |
Commit Message
Ken Matsui
Dec. 7, 2023, 5:33 a.m. UTC
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>
---
libstdc++-v3/include/std/type_traits | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index b6d0441129b..2979d79a801 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>