From patchwork Tue Nov 27 12:00:05 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Biener X-Patchwork-Id: 202197 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) by ozlabs.org (Postfix) with SMTP id DFF242C008F for ; Tue, 27 Nov 2012 23:04:32 +1100 (EST) Comment: DKIM? See http://www.dkim.org DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=gcc.gnu.org; s=default; x=1354622673; h=Comment: DomainKey-Signature:Received:Received:Received:Received:Date: From:To:Subject:Message-ID:User-Agent:MIME-Version:Content-Type: Mailing-List:Precedence:List-Id:List-Unsubscribe:List-Archive: List-Post:List-Help:Sender:Delivered-To; bh=JNHaLYs/xGL6nVRKqBKA pQ8Qh+Q=; b=jPsXPIdqjkv9PMR7w6Yn3K8JKSQcvk5Tqa+2TfP/Piqj1FqUX0sk l6bjsBau7Bh1x/4+1rO488/yKIuot+u8eszPUiTmiW9ArQ4qJFu0vG1YtFmYZY/h cZwHRB4UbqAPHYzjGBYMQ6Cm2d0VMcIVwSyO9krOuKGwdCCYdJoW/V8= Comment: DomainKeys? See http://antispam.yahoo.com/domainkeys DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=gcc.gnu.org; h=Received:Received:X-SWARE-Spam-Status:X-Spam-Check-By:Received:Received:Date:From:To:Subject:Message-ID:User-Agent:MIME-Version:Content-Type:Mailing-List:Precedence:List-Id:List-Unsubscribe:List-Archive:List-Post:List-Help:Sender:Delivered-To; b=rMVBT/+bgLC7iNRfh4eu25XGn/VCLjQv1hZqBW79ga1E0wM40iVYFUAX6gnGXy 9+KrCgK+lI7s79GslmrDbKYZZ3NmNwlaLgyuOOtOTOtIi1wmB/ErvN1n09Ffcfx5 YQ3ySDkwh/jy2J2DYJoor0ZmQrrsisgj/OckyyTP/kiQQ=; Received: (qmail 11374 invoked by alias); 27 Nov 2012 12:04:16 -0000 Received: (qmail 11258 invoked by uid 22791); 27 Nov 2012 12:04:14 -0000 X-SWARE-Spam-Status: No, hits=-5.6 required=5.0 tests=AWL, BAYES_00, KHOP_RCVD_UNTRUST, RCVD_IN_DNSWL_HI, 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; Tue, 27 Nov 2012 12:04:09 +0000 Received: from relay2.suse.de (unknown [195.135.220.254]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx2.suse.de (Postfix) with ESMTP id 1CF2B89994 for ; Tue, 27 Nov 2012 13:04:08 +0100 (CET) Date: Tue, 27 Nov 2012 13:00:05 +0100 (CET) From: Richard Biener To: gcc-patches@gcc.gnu.org Subject: [PATCH] Remove dead code from fold_stmt_1 Message-ID: User-Agent: Alpine 2.00 (LNX 1167 2008-08-23) MIME-Version: 1.0 Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Delivered-To: mailing list gcc-patches@gcc.gnu.org This removes dead code as suggested by Jakub. Bootstrapped and tested on x86_64-unknown-linux-gnu. Richard. 2012-11-27 Richard Biener * gimple-fold.c (fold_stmt_1): Remove unnecessary code. Index: gcc/gimple-fold.c =================================================================== --- gcc/gimple-fold.c (revision 193839) +++ gcc/gimple-fold.c (working copy) @@ -1282,14 +1282,6 @@ fold_stmt_1 (gimple_stmt_iterator *gsi, default:; } - /* If stmt folds into nothing and it was the last stmt in a bb, - don't call gsi_stmt. */ - if (gsi_end_p (*gsi)) - { - gcc_assert (next_stmt == NULL); - return changed; - } - stmt = gsi_stmt (*gsi); /* Fold *& on the lhs. Don't do this if stmt folded into nothing,