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| author | Ken Matsui <kmatsui@gcc.gnu.org> | 2023-09-11 20:35:53 -0700 |
|---|---|---|
| committer | Ken Matsui <kmatsui@gcc.gnu.org> | 2023-12-16 08:59:33 -0800 |
| commit | d95e54347f84e16d09f89547f836d2a05c667c57 (patch) | |
| tree | 4deaf39689180984c51128e4e25d6b612cb1be85 /libstdc++-v3 | |
| parent | 4a235f8eb0f19292c007c4374d6b48ab01667a3b (diff) | |
| download | gcc-d95e54347f84e16d09f89547f836d2a05c667c57.zip gcc-d95e54347f84e16d09f89547f836d2a05c667c57.tar.gz gcc-d95e54347f84e16d09f89547f836d2a05c667c57.tar.bz2 | |
libstdc++: Optimize std::is_member_pointer compilation performance
This patch optimizes the compilation performance of std::is_member_pointer
by dispatching to the new __is_member_pointer built-in trait.
libstdc++-v3/ChangeLog:
* include/std/type_traits (is_member_pointer): Use
__is_member_pointer built-in trait.
(is_member_pointer_v): Likewise.
Signed-off-by: Ken Matsui <kmatsui@gcc.gnu.org>
Reviewed-by: Jonathan Wakely <jwakely@redhat.com>
Diffstat (limited to 'libstdc++-v3')
| -rw-r--r-- | libstdc++-v3/include/std/type_traits | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 4a50687..4ab1d29 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -716,6 +716,13 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION struct is_compound : public __not_<is_fundamental<_Tp>>::type { }; + /// is_member_pointer +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_member_pointer) + template<typename _Tp> + struct is_member_pointer + : public __bool_constant<__is_member_pointer(_Tp)> + { }; +#else /// @cond undocumented template<typename _Tp> struct __is_member_pointer_helper @@ -726,11 +733,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION : public true_type { }; /// @endcond - /// is_member_pointer template<typename _Tp> struct is_member_pointer : public __is_member_pointer_helper<__remove_cv_t<_Tp>>::type { }; +#endif template<typename, typename> struct is_same; @@ -3228,8 +3235,15 @@ template <typename _Tp> inline constexpr bool is_scalar_v = is_scalar<_Tp>::value; template <typename _Tp> inline constexpr bool is_compound_v = is_compound<_Tp>::value; + +#if _GLIBCXX_USE_BUILTIN_TRAIT(__is_member_pointer) +template <typename _Tp> + inline constexpr bool is_member_pointer_v = __is_member_pointer(_Tp); +#else template <typename _Tp> inline constexpr bool is_member_pointer_v = is_member_pointer<_Tp>::value; +#endif + template <typename _Tp> inline constexpr bool is_const_v = false; template <typename _Tp> |