From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id CF9E63858C62; Tue, 14 Mar 2023 05:00:52 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org CF9E63858C62 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1678770052; bh=/fxToyVhfjSA0fv8Sf1ICXxTHSURuFSFFwnQZw8WI30=; h=From:To:Subject:Date:In-Reply-To:References:From; b=TwJKe2bwNGWJu6kk/8mJd5ouwkm7MCWR0it9eCqiK+4CHh8ePWRalRM9wSvHKJ/SE TOCcu3egJy7SQAlbwn8CCGMuJxoMP7abWFE7csgybfKSAScLh9IcZNaHUopHNazf9Y SWC0CtdjQ8F9Z1faULLLAgT+KBt3TMOmc7HhE0ew= From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/96564] [11/12/13 Regression] New maybe use of uninitialized variable warning since r11-959 Date: Tue, 14 Mar 2023 05:00:51 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Version: 11.0 X-Bugzilla-Keywords: alias, diagnostic, missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: pinskia at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 11.4 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96564 --- Comment #10 from Andrew Pinski --- Note I don't think you really need exact aliasing information to optimize t= his though. See PR 109119 for an example where you just need to know on the path where PRE adds the load, the two addresses are equal due to the condition.=