From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by sourceware.org (Postfix) with ESMTPS id 0425D385702F for ; Fri, 24 Jul 2020 14:52:55 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 0425D385702F Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=rguenther@suse.de X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id F10DBB1A6 for ; Fri, 24 Jul 2020 14:53:01 +0000 (UTC) Date: Fri, 24 Jul 2020 16:52:53 +0200 (CEST) From: Richard Biener To: gcc-patches@gcc.gnu.org Subject: [PATCH] Remove useless backedge marking Message-ID: User-Agent: Alpine 2.21 (LSU 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Spam-Status: No, score=-10.2 required=5.0 tests=BAYES_00, GIT_PATCH_0, KAM_DMARC_STATUS, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Jul 2020 14:52:56 -0000 I didn't find anything using EDGE_DFS_BACK in RTL infrastructure used by var-tracking or var-tracking itself, the following removes this computation. Bootstrapped and tested on x86_64-unknown-linux-gnu. I'll push this on Monday unless somebody points out my obvious mistake. Richard. 2020-07-24 Richard Biener * var-tracking.c (variable_tracking_main_1): Remove call to mark_dfs_back_edges. --- gcc/var-tracking.c | 1 - 1 file changed, 1 deletion(-) diff --git a/gcc/var-tracking.c b/gcc/var-tracking.c index cca75064c8b..a345fb47eb7 100644 --- a/gcc/var-tracking.c +++ b/gcc/var-tracking.c @@ -10481,7 +10481,6 @@ variable_tracking_main_1 (void) return 0; } - mark_dfs_back_edges (); if (!vt_initialize ()) { vt_finalize (); -- 2.25.1