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| author | Ken Matsui <kmatsui@gcc.gnu.org> | 2024-02-14 03:42:33 -0800 |
|---|---|---|
| committer | Ken Matsui <kmatsui@gcc.gnu.org> | 2024-06-13 05:56:08 -0700 |
| commit | 24da955ab442107909a06f3ef722f4dbf6751236 (patch) | |
| tree | 3d14d9c93ad2a19cb047932467788967fe53ccc8 | |
| parent | b38aefbbc90a3334c6c5ba6569816d348a1a0c91 (diff) | |
| download | gcc-24da955ab442107909a06f3ef722f4dbf6751236.zip gcc-24da955ab442107909a06f3ef722f4dbf6751236.tar.gz gcc-24da955ab442107909a06f3ef722f4dbf6751236.tar.bz2 | |
libstdc++: Optimize std::add_pointer compilation performance
This patch optimizes the compilation performance of std::add_pointer
by dispatching to the new __add_pointer built-in trait.
libstdc++-v3/ChangeLog:
* include/std/type_traits (add_pointer): Use __add_pointer
built-in trait.
Signed-off-by: Ken Matsui <kmatsui@gcc.gnu.org>
Reviewed-by: Patrick Palka <ppalka@redhat.com>
Reviewed-by: Jonathan Wakely <jwakely@redhat.com>
| -rw-r--r-- | libstdc++-v3/include/std/type_traits | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index efbe273d..e179015 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -2135,6 +2135,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION { }; #endif + /// add_pointer +#if _GLIBCXX_USE_BUILTIN_TRAIT(__add_pointer) + template<typename _Tp> + struct add_pointer + { using type = __add_pointer(_Tp); }; +#else template<typename _Tp, typename = void> struct __add_pointer_helper { using type = _Tp; }; @@ -2143,7 +2149,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION struct __add_pointer_helper<_Tp, __void_t<_Tp*>> { using type = _Tp*; }; - /// add_pointer template<typename _Tp> struct add_pointer : public __add_pointer_helper<_Tp> @@ -2156,6 +2161,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION template<typename _Tp> struct add_pointer<_Tp&&> { using type = _Tp*; }; +#endif #if __cplusplus > 201103L /// Alias template for remove_pointer |