From patchwork Wed Nov 30 11:52:47 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Biener X-Patchwork-Id: 61256 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 5E2E2385B525 for ; Wed, 30 Nov 2022 11:53:16 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 5E2E2385B525 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1669809196; bh=csqemcjZGj8d3RanOab9vpgLzR5ZsegHH1f0vb/Ig6A=; h=Date:To:Subject:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:From; b=Ivx+CysIS6j63mUD9BHkjN9nndUBx7jBeztp7VjizLvCoezH0NGBJ5b4cCx1Ox9pd uLFX1VIexdkBysSaPLpUIl7YE7GPXznqQKL6Xaknh6SGFKh/wNUFMWSI3bctZCYrDd C5j2I3y8Q1kMM+MpAlXk5yqJponNRDFX/jLO8c6Q= X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by sourceware.org (Postfix) with ESMTPS id F32493858D1E for ; Wed, 30 Nov 2022 11:52:48 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org F32493858D1E Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id E1FC51F8D4 for ; Wed, 30 Nov 2022 11:52:47 +0000 (UTC) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id C39A113A70 for ; Wed, 30 Nov 2022 11:52:47 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id ejugLg9Eh2MNLAAAMHmgww (envelope-from ) for ; Wed, 30 Nov 2022 11:52:47 +0000 Date: Wed, 30 Nov 2022 12:52:47 +0100 (CET) To: gcc-patches@gcc.gnu.org Subject: [PATCH] Improve uninit diagnostic dumps MIME-Version: 1.0 Message-Id: <20221130115247.C39A113A70@imap2.suse-dmz.suse.de> X-Spam-Status: No, score=-11.8 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) 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-Patchwork-Original-From: Richard Biener via Gcc-patches From: Richard Biener Reply-To: Richard Biener Errors-To: gcc-patches-bounces+patchwork=sourceware.org@gcc.gnu.org Sender: "Gcc-patches" The following dumps the edge a use is uninitialized in a PHI. Bootstrapped and tested on x86_64-unknown-linux-gnu, pushed. * tree-ssa-uninit.cc (find_uninit_use): Dump the edge for a PHI node. --- gcc/tree-ssa-uninit.cc | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/gcc/tree-ssa-uninit.cc b/gcc/tree-ssa-uninit.cc index bf2e50511af..7fbc384f2d4 100644 --- a/gcc/tree-ssa-uninit.cc +++ b/gcc/tree-ssa-uninit.cc @@ -1249,8 +1249,8 @@ find_uninit_use (gphi *phi, unsigned uninit_opnds, int *bb_to_rpo) if (dump_file && (dump_flags & TDF_DETAILS)) { - fprintf (dump_file, "Found unguarded use in bb %u: ", - use_bb->index); + fprintf (dump_file, "Found unguarded use on edge %u -> %u: ", + e->src->index, e->dest->index); print_gimple_stmt (dump_file, use_stmt, 0); } /* Found a phi use that is not guarded, mark the phi_result as