From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id F214D38515EF; Tue, 30 Mar 2021 10:06:11 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org F214D38515EF From: "jakub at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/99825] [11 Regression] ICE in vect_build_combine_node Date: Tue, 30 Mar 2021 10:06:11 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Version: 11.0 X-Bugzilla-Keywords: ice-on-valid-code X-Bugzilla-Severity: normal X-Bugzilla-Who: jakub at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 11.0 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc 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: Tue, 30 Mar 2021 10:06:12 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99825 Jakub Jelinek changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |tnfchris at gcc dot gnu.org --- Comment #2 from Jakub Jelinek --- 887 perm.create (SLP_TREE_LANES (rep)); 888=20=20=20=20=20 889 for (unsigned x =3D 0; x < SLP_TREE_LANES (rep); x+=3D2) 890 { 891 perm.quick_push (std::make_pair (0, x)); 892 perm.quick_push (std::make_pair (1, x+1)); 893 } that was added in r11-6693-ge09173d84dabd186ad2463f47350c1bcabfeab8f can't really work, it allocates just SLP_TREE_LANES (resp) elements, but can quick_push one more elements - when SLP_TREE_LANES is odd (in this testcase 3). So, either some caller needs to ensure SLP_TREE_LANES is even= or this function isn't called, or it needs to be changed to handle even odd numbers.=