From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 10466 invoked by alias); 12 Nov 2011 11:13:13 -0000 Received: (qmail 10447 invoked by uid 22791); 12 Nov 2011 11:13:12 -0000 X-SWARE-Spam-Status: No, hits=-2.9 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Sat, 12 Nov 2011 11:12:57 +0000 From: "paolo.carlini at oracle dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug libstdc++/51078] [PATCH] performance improvement of std::count algorithm Date: Sat, 12 Nov 2011 12:14:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: libstdc++ X-Bugzilla-Keywords: X-Bugzilla-Severity: enhancement X-Bugzilla-Who: paolo.carlini at oracle dot com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2011-11/txt/msg01282.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51078 --- Comment #15 from Paolo Carlini 2011-11-12 11:12:36 UTC --- Actually, patches do not belong to Bugzilla at all thus this issue should have been posted and discussed only on the mailing list. In any case, we are not going to add to the library manually unrolled loops for such simple algorithms until we understand why the loops aren't satisfactorily unrolled, and vectorized, and all it's profitable, by the compiler.