From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id AE1F53858292; Wed, 3 Aug 2022 12:33:42 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org AE1F53858292 From: "malat at debian dot org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/106322] 32bits / tree-vectorize: Wrong code at O2 level (-fno-tree-vectorize is working) Date: Wed, 03 Aug 2022 12:33:42 +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: 12.1.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: malat at debian dot org X-Bugzilla-Status: WAITING 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 X-BeenThere: gcc-bugs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-bugs mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Aug 2022 12:33:42 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106322 --- Comment #14 from Mathieu Malaterre --- I can make the symptom go away with a single function attribute: ``` % diff -u * --- /tmp/ii/mul_test.cc.ii.bad 2022-08-03 12:29:41.192263306 +0000 +++ /tmp/ii/mul_test.cc.ii.good 2022-08-03 12:29:41.196263281 +0000 @@ -124932,7 +124932,7 @@ } template __attribute__((noinline)) void - + __attribute__((optimize("no-tree-vectorize"))) operator()(T , D d) { const size_t N =3D Lanes(d); ```=