From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 73C5B3858020; Fri, 27 Jan 2023 14:59:39 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 73C5B3858020 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1674831579; bh=swPqNAeQhjV+HIJs+YzMGH2DWKRGnm7Cw9qHoYO1Fw8=; h=From:To:Subject:Date:In-Reply-To:References:From; b=GYNle+FxRUQagSZ9e47X8Ov8qKtoaFp/A/eEX7Lvzqucntnwy3rBVF/W6AnjkMsAv GLtBqP7TKzvfX4xETKRiR98E2yyykoyx4llbnjsW7lsQ7Q0RjBLTJTTXFmumIQhPe5 XrBc88FUAg/u+l0Jd+No4RduhYivo7N198zGOxgo= From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/108552] Linux i386 kernel 5.14 memory corruption for pre_compound_page() when gcov is enabled Date: Fri, 27 Jan 2023 14:59:38 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 11.3.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- 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=3D108552 --- Comment #24 from Richard Biener --- Does diff --git a/gcc/tree-ssa-loop-ivopts.cc b/gcc/tree-ssa-loop-ivopts.cc index 0dd47910f97..f780c0ce08c 100644 --- a/gcc/tree-ssa-loop-ivopts.cc +++ b/gcc/tree-ssa-loop-ivopts.cc @@ -2241,7 +2241,7 @@ may_be_nonaddressable_p (tree expr) { case VAR_DECL: /* Check if it's a register variable. */ - return DECL_HARD_REGISTER (expr); + return DECL_HARD_REGISTER (expr) || DECL_NONALIASED (expr); case TARGET_MEM_REF: /* TARGET_MEM_REFs are translated directly to valid MEMs on the fix it?=