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| author | Ken Matsui <kmatsui@gcc.gnu.org> | 2023-09-11 19:15:21 -0700 |
|---|---|---|
| committer | Ken Matsui <kmatsui@gcc.gnu.org> | 2023-12-16 08:59:31 -0800 |
| commit | 8843cff6c98cb0789a1ec6f51be6c5122fc1b5e9 (patch) | |
| tree | d9700f67cf83cfd5c46f9850f6cbd56457a69d99 | |
| parent | 7fd9c349e455345a8b94d8fcee1c92b5c92873a5 (diff) | |
| download | gcc-8843cff6c98cb0789a1ec6f51be6c5122fc1b5e9.zip gcc-8843cff6c98cb0789a1ec6f51be6c5122fc1b5e9.tar.gz gcc-8843cff6c98cb0789a1ec6f51be6c5122fc1b5e9.tar.bz2 | |
libstdc++: Optimize std::is_bounded_array compilation performance
This patch optimizes the compilation performance of std::is_bounded_array
by dispatching to the new __is_bounded_array built-in trait.
libstdc++-v3/ChangeLog:
* include/std/type_traits (is_bounded_array_v): Use
__is_bounded_array built-in trait.
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 | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 64f9d67..2a1a0aa 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -3506,11 +3506,16 @@ template<typename _Ret, typename _Fn, typename... _Args> /// True for a type that is an array of known bound. /// @ingroup variable_templates /// @since C++20 +# if _GLIBCXX_USE_BUILTIN_TRAIT(__is_bounded_array) + template<typename _Tp> + inline constexpr bool is_bounded_array_v = __is_bounded_array(_Tp); +# else template<typename _Tp> inline constexpr bool is_bounded_array_v = false; template<typename _Tp, size_t _Size> inline constexpr bool is_bounded_array_v<_Tp[_Size]> = true; +# endif /// True for a type that is an array of unknown bound. /// @ingroup variable_templates |