From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 8567 invoked by alias); 7 Jun 2004 20:54:01 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 8542 invoked by uid 48); 7 Jun 2004 20:53:59 -0000 Date: Mon, 07 Jun 2004 20:54:00 -0000 Message-ID: <20040607205359.8539.qmail@sourceware.org> From: "pinskia at gcc dot gnu dot org" To: gcc-bugs@gcc.gnu.org In-Reply-To: <20040130124106.13931.bonzini@gnu.org> References: <20040130124106.13931.bonzini@gnu.org> Reply-To: gcc-bugzilla@gcc.gnu.org Subject: [Bug rtl-optimization/13931] [3.3/3.4/3.5 Regression] combiner much slower on big basic blocks X-Bugzilla-Reason: CC X-SW-Source: 2004-06/txt/msg00829.txt.bz2 List-Id: ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-06-07 20:53 ------- If someone could find the patch which make this slower I could do something about it. There has only been one patch to combine after 3.3 which might have caused this: 2003-10-06 Eric Botcazou PR optimization/11637 * combine.c (adjust_for_new_dest): New function to adjust the notes and LOG_LINKS when the dest of an insn has changed. (try_combine): Use it when deleting the first insn of a two-insn parallel or splitting a two-load parallel. -- What |Removed |Added ---------------------------------------------------------------------------- CC| |ebotcazou at gcc dot gnu dot | |org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13931