From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 11090 invoked by alias); 20 Oct 2011 07:53:26 -0000 Received: (qmail 11078 invoked by uid 22791); 20 Oct 2011 07:53:25 -0000 X-SWARE-Spam-Status: No, hits=-3.5 required=5.0 tests=AWL,BAYES_00,RP_MATCHES_RCVD,TW_TM X-Spam-Check-By: sourceware.org Received: from cantor2.suse.de (HELO mx2.suse.de) (195.135.220.15) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 20 Oct 2011 07:53:10 +0000 Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.221.2]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx2.suse.de (Postfix) with ESMTP id 921F48A908 for ; Thu, 20 Oct 2011 09:53:09 +0200 (CEST) Date: Thu, 20 Oct 2011 08:20:00 -0000 From: Richard Guenther To: gcc-patches@gcc.gnu.org Subject: [PATCH] Loop IM cost TLC Message-ID: User-Agent: Alpine 2.00 (LNX 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII 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: 2011-10/txt/msg01825.txt.bz2 We've got new tree codes, the following makes Loop IM cost consider those expensive that make sense. Bootstrapped and tested on x86_64-unknown-linux-gnu, applied. Richard. 2011-10-19 Richard Guenther * tree-ssa-loop-im.c (stmt_cost): Add WIDEN_*, FMA_EXPR and rotates to the set of expensive operations. Index: gcc/tree-ssa-loop-im.c =================================================================== *** gcc/tree-ssa-loop-im.c (revision 180191) --- gcc/tree-ssa-loop-im.c (working copy) *************** stmt_cost (gimple stmt) *** 549,554 **** --- 549,559 ---- switch (gimple_assign_rhs_code (stmt)) { case MULT_EXPR: + case WIDEN_MULT_EXPR: + case WIDEN_MULT_PLUS_EXPR: + case WIDEN_MULT_MINUS_EXPR: + case DOT_PROD_EXPR: + case FMA_EXPR: case TRUNC_DIV_EXPR: case CEIL_DIV_EXPR: case FLOOR_DIV_EXPR: *************** stmt_cost (gimple stmt) *** 565,570 **** --- 570,578 ---- case LSHIFT_EXPR: case RSHIFT_EXPR: + case WIDEN_LSHIFT_EXPR: + case LROTATE_EXPR: + case RROTATE_EXPR: cost += 20; break;