From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 7934) id 5864B38708D8; Sat, 16 Dec 2023 17:00:55 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 5864B38708D8 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1702746055; bh=RxNQPGBSZwG8XaYhLE34YkJaxwSdSa9MGWUj5uTJyXk=; h=From:To:Subject:Date:From; b=siTtwWnUpkgKABl8kqgGifl1NCIkM9SZ8/Zigs/jiitiAxtbC6uDQz2CQajb3JYmg MaciuDXFXznA9QNHsyRE5QqijnZw2Xd4W/L7biRRKqk4WfyU5E4H3eCXEggOlCHKqN 6i2mHZUZyMmhoHzPw9/JrlgdLVLUviBYbtVvWX0w= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Ken Matsui To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r14-6632] libstdc++: Optimize std::remove_pointer compilation performance X-Act-Checkin: gcc X-Git-Author: Ken Matsui X-Git-Refname: refs/heads/master X-Git-Oldrev: 4b111013654e745e8d73bd9614a15efbfd19ae8c X-Git-Newrev: 61d6dee992fdfa350a0c6d2a8151ec6e2844c419 Message-Id: <20231216170055.5864B38708D8@sourceware.org> Date: Sat, 16 Dec 2023 17:00:55 +0000 (GMT) List-Id: https://gcc.gnu.org/g:61d6dee992fdfa350a0c6d2a8151ec6e2844c419 commit r14-6632-g61d6dee992fdfa350a0c6d2a8151ec6e2844c419 Author: Ken Matsui Date: Mon Mar 20 14:05:48 2023 -0700 libstdc++: Optimize std::remove_pointer compilation performance This patch optimizes the compilation performance of std::remove_pointer by dispatching to the new remove_pointer built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (remove_pointer): Use __remove_pointer built-in trait. Signed-off-by: Ken Matsui Reviewed-by: Jonathan Wakely Diff: --- libstdc++-v3/include/std/type_traits | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 2979d79a801..f00c07f94f9 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -2089,6 +2089,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION // Pointer modifications. + /// remove_pointer +#if _GLIBCXX_USE_BUILTIN_TRAIT(__remove_pointer) + template + struct remove_pointer + { using type = __remove_pointer(_Tp); }; +#else template struct __remove_pointer_helper { using type = _Tp; }; @@ -2097,11 +2103,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION struct __remove_pointer_helper<_Tp, _Up*> { using type = _Up; }; - /// remove_pointer template struct remove_pointer : public __remove_pointer_helper<_Tp, __remove_cv_t<_Tp>> { }; +#endif template struct __add_pointer_helper