From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id F29043858D1E; Tue, 8 Feb 2022 19:39:18 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org F29043858D1E From: "gscfq@t-online.de" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/104445] New: [12 Regression] ICE in vect_create_partial_epilog, at tree-vect-loop.cc:5098 Date: Tue, 08 Feb 2022 19:39:18 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c X-Bugzilla-Version: 12.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: gscfq@t-online.de X-Bugzilla-Status: UNCONFIRMED 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: bug_id short_desc product version bug_status bug_severity priority component assigned_to reporter target_milestone Message-ID: 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, 08 Feb 2022 19:39:19 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104445 Bug ID: 104445 Summary: [12 Regression] ICE in vect_create_partial_epilog, at tree-vect-loop.cc:5098 Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: gscfq@t-online.de Target Milestone: --- Changed between 20210711 and 20210718, at -O3 or -Ofast : $ cat z1.c signed char a; signed char f (int i, int j) { signed char c; while (i !=3D 0) { a ^=3D j; ++c; ++i; } return c; } $ gcc-12-20220206 -c z1.c -m32 -O3 -mavx -mno-mmx during GIMPLE pass: vect z1.c: In function 'f': z1.c:2:13: internal compiler error: in vect_create_partial_epilog, at tree-vect-loop.cc:5098 2 | signed char f (int i, int j) | ^ 0xe32e69 vect_create_partial_epilog ../../gcc/tree-vect-loop.cc:5095 0xe3bd5f vect_transform_cycle_phi(_loop_vec_info*, _stmt_vec_info*, gimple*= *, _slp_tree*, _slp_instance*) ../../gcc/tree-vect-loop.cc:7795 0x190fcad vect_transform_stmt(vec_info*, _stmt_vec_info*, gimple_stmt_iterator*, _slp_tree*, _slp_instance*) ../../gcc/tree-vect-stmts.cc:11276 0xe4b65f vect_transform_loop(_loop_vec_info*, gimple*) ../../gcc/tree-vect-loop.cc:9799 0xe7d565 vect_transform_loops ../../gcc/tree-vectorizer.cc:1004 0xe7d713 vect_transform_loops ../../gcc/tree-vectorizer.cc:1022 0xe7db86 try_vectorize_loop_1 ../../gcc/tree-vectorizer.cc:1133 0xe7db86 try_vectorize_loop ../../gcc/tree-vectorizer.cc:1164 0xe7e0c4 execute ../../gcc/tree-vectorizer.cc:1278=