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| author | Ken Matsui <kmatsui@gcc.gnu.org> | 2023-09-11 08:48:31 -0700 |
|---|---|---|
| committer | Ken Matsui <kmatsui@gcc.gnu.org> | 2023-12-16 08:59:34 -0800 |
| commit | 53f9d0cc07a0c85bf53541f79cc19730abcd17b9 (patch) | |
| tree | 42752491991caf30ffd911b5761bc8fa6ddf03b0 | |
| parent | d95e54347f84e16d09f89547f836d2a05c667c57 (diff) | |
| download | gcc-53f9d0cc07a0c85bf53541f79cc19730abcd17b9.zip gcc-53f9d0cc07a0c85bf53541f79cc19730abcd17b9.tar.gz gcc-53f9d0cc07a0c85bf53541f79cc19730abcd17b9.tar.bz2 | |
libstdc++: Optimize std::is_member_function_pointer compilation performance
This patch optimizes the compilation performance of
std::is_member_function_pointer by dispatching to the new
__is_member_function_pointer built-in trait.
libstdc++-v3/ChangeLog:
* include/std/type_traits (is_member_function_pointer): Use
__is_member_function_pointer built-in trait.
(is_member_function_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 | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 4ab1d29..99ae825 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -588,6 +588,13 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION : public __is_member_object_pointer_helper<__remove_cv_t<_Tp>>::type { }; +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_member_function_pointer) + /// is_member_function_pointer + template<typename _Tp> + struct is_member_function_pointer + : public __bool_constant<__is_member_function_pointer(_Tp)> + { }; +#else template<typename> struct __is_member_function_pointer_helper : public false_type { }; @@ -601,6 +608,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION struct is_member_function_pointer : public __is_member_function_pointer_helper<__remove_cv_t<_Tp>>::type { }; +#endif /// is_enum template<typename _Tp> @@ -3208,9 +3216,17 @@ template <typename _Tp> template <typename _Tp> inline constexpr bool is_member_object_pointer_v = is_member_object_pointer<_Tp>::value; + +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_member_function_pointer) +template <typename _Tp> + inline constexpr bool is_member_function_pointer_v = + __is_member_function_pointer(_Tp); +#else template <typename _Tp> inline constexpr bool is_member_function_pointer_v = is_member_function_pointer<_Tp>::value; +#endif + template <typename _Tp> inline constexpr bool is_enum_v = __is_enum(_Tp); template <typename _Tp> |