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| author | Ken Matsui <kmatsui@gcc.gnu.org> | 2023-09-12 00:14:06 -0700 |
|---|---|---|
| committer | Ken Matsui <kmatsui@gcc.gnu.org> | 2023-12-16 08:59:35 -0800 |
| commit | fa454b8dd0346a1821338e2cfcf27c9cff0f1b5c (patch) | |
| tree | d528117fc0861f2586cbee5d8b84e5654fc9a854 | |
| parent | 53f9d0cc07a0c85bf53541f79cc19730abcd17b9 (diff) | |
| download | gcc-fa454b8dd0346a1821338e2cfcf27c9cff0f1b5c.zip gcc-fa454b8dd0346a1821338e2cfcf27c9cff0f1b5c.tar.gz gcc-fa454b8dd0346a1821338e2cfcf27c9cff0f1b5c.tar.bz2 | |
libstdc++: Optimize std::is_member_object_pointer compilation performance
This patch optimizes the compilation performance of
std::is_member_object_pointer by dispatching to the new
__is_member_object_pointer built-in trait.
libstdc++-v3/ChangeLog:
* include/std/type_traits (is_member_object_pointer): Use
__is_member_object_pointer built-in trait.
(is_member_object_pointer_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 | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 99ae825..1edd05a 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -574,6 +574,13 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION struct is_rvalue_reference<_Tp&&> : public true_type { }; + /// is_member_object_pointer +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_member_object_pointer) + template<typename _Tp> + struct is_member_object_pointer + : public __bool_constant<__is_member_object_pointer(_Tp)> + { }; +#else template<typename> struct __is_member_object_pointer_helper : public false_type { }; @@ -582,11 +589,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION struct __is_member_object_pointer_helper<_Tp _Cp::*> : public __not_<is_function<_Tp>>::type { }; - /// is_member_object_pointer + template<typename _Tp> struct is_member_object_pointer : public __is_member_object_pointer_helper<__remove_cv_t<_Tp>>::type { }; +#endif #if _GLIBCXX_USE_BUILTIN_TRAIT(__is_member_function_pointer) /// is_member_function_pointer @@ -3213,9 +3221,16 @@ template <typename _Tp> inline constexpr bool is_rvalue_reference_v = false; template <typename _Tp> inline constexpr bool is_rvalue_reference_v<_Tp&&> = true; + +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_member_object_pointer) +template <typename _Tp> + inline constexpr bool is_member_object_pointer_v = + __is_member_object_pointer(_Tp); +#else template <typename _Tp> inline constexpr bool is_member_object_pointer_v = is_member_object_pointer<_Tp>::value; +#endif #if _GLIBCXX_USE_BUILTIN_TRAIT(__is_member_function_pointer) template <typename _Tp> |