From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 26766 invoked by alias); 28 Jun 2012 22:30:31 -0000 Received: (qmail 26755 invoked by uid 22791); 28 Jun 2012 22:30:30 -0000 X-SWARE-Spam-Status: No, hits=-3.6 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,KHOP_THREADED,SARE_SUB_6CONS_WORD X-Spam-Check-By: sourceware.org Received: from localhost (HELO sourceware.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 28 Jun 2012 22:30:19 +0000 From: "maxim.kuvyrkov at gmail dot com" To: glibc-bugs@sources.redhat.com Subject: [Bug libc/12100] QoI regression: strstr() slowed from O(n) to O(n^2) on SSE4 machines Date: Thu, 28 Jun 2012 22:30:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: glibc X-Bugzilla-Component: libc X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: maxim.kuvyrkov at gmail dot com X-Bugzilla-Status: NEW X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at sourceware dot org X-Bugzilla-Target-Milestone: 2.17 X-Bugzilla-Changed-Fields: CC Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://sourceware.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Mailing-List: contact glibc-bugs-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: glibc-bugs-owner@sourceware.org X-SW-Source: 2012-06/txt/msg00325.txt.bz2 http://sourceware.org/bugzilla/show_bug.cgi?id=12100 Maxim Kuvyrkov changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |maxim.kuvyrkov at gmail dot | |com --- Comment #4 from Maxim Kuvyrkov 2012-06-28 22:29:51 UTC --- As things stand, my patches ([1] quoted above) won't address the O(n^2) -> O(n) problem for SSE4 machines -- they fix BZ #11607 instead. Ondrej's patches, on the other hand, are supposed to fix the O(n^2) problem for x86, but they haven't been posted yet. -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.