From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 11911 invoked by alias); 11 Apr 2011 20:04:07 -0000 Received: (qmail 11903 invoked by uid 22791); 11 Apr 2011 20:04:06 -0000 X-SWARE-Spam-Status: No, hits=-1.9 required=5.0 tests=AWL,BAYES_00,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from e6.ny.us.ibm.com (HELO e6.ny.us.ibm.com) (32.97.182.146) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Mon, 11 Apr 2011 20:04:01 +0000 Received: from d01dlp02.pok.ibm.com (d01dlp02.pok.ibm.com [9.56.224.85]) by e6.ny.us.ibm.com (8.14.4/8.13.1) with ESMTP id p3BJdRpJ015210 for ; Mon, 11 Apr 2011 15:39:45 -0400 Received: from d01relay05.pok.ibm.com (d01relay05.pok.ibm.com [9.56.227.237]) by d01dlp02.pok.ibm.com (Postfix) with ESMTP id 4BB766E803C for ; Mon, 11 Apr 2011 16:04:00 -0400 (EDT) Received: from d01av04.pok.ibm.com (d01av04.pok.ibm.com [9.56.224.64]) by d01relay05.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id p3BK3x0d175332 for ; Mon, 11 Apr 2011 16:03:59 -0400 Received: from d01av04.pok.ibm.com (loopback [127.0.0.1]) by d01av04.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id p3BK3oqS028775 for ; Mon, 11 Apr 2011 16:03:50 -0400 Received: from pthw510.rchland.ibm.com (sig-9-49-133-213.mts.ibm.com [9.49.133.213]) by d01av04.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id p3BK3m1S028371; Mon, 11 Apr 2011 16:03:49 -0400 Message-ID: <4DA35EA3.5090606@linux.vnet.ibm.com> Date: Mon, 11 Apr 2011 20:04:00 -0000 From: Pat Haugen User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.15) Gecko/20110303 Thunderbird/3.1.9 MIME-Version: 1.0 To: gcc-patches@gcc.gnu.org CC: David Edelsohn Subject: [PATCH, rs6000] Make LR/CTR moves expensive for Power7 also Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Content-Scanned: Fidelis XPS MAILER X-IsSubscribed: yes Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org X-SW-Source: 2011-04/txt/msg00799.txt.bz2 The following was overlooked on initial Power7 support. Bootstrap/regtest on powerpc64-linux with no new regressions. Ok for trunk and 4.6? -Pat 2011-04-11 Pat Haugen * config/rs6000/rs6000.c (rs6000_register_move_cost): Make LR/CTR moves expensive on Power7 also. Index: gcc/config/rs6000/rs6000.c =================================================================== --- gcc/config/rs6000/rs6000.c (revision 172255) +++ gcc/config/rs6000/rs6000.c (working copy) @@ -26701,9 +26701,10 @@ rs6000_register_move_cost (enum machine_ else if (from == CR_REGS) ret = 4; - /* Power6 has slower LR/CTR moves so make them more expensive than - memory in order to bias spills to memory .*/ - else if (rs6000_cpu == PROCESSOR_POWER6 + /* For those processors that have slow LR/CTR moves, make them more + expensive than memory in order to bias spills to memory .*/ + else if ((rs6000_cpu == PROCESSOR_POWER6 + || rs6000_cpu == PROCESSOR_POWER7) && reg_classes_intersect_p (from, LINK_OR_CTR_REGS)) ret = 6 * hard_regno_nregs[0][mode];