From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 2F7AD3858408; Thu, 28 Dec 2023 12:27:31 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 2F7AD3858408 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1703766451; bh=AzpHmCnVLoqlVrvurpx+5yINYUUqL1uJB0Q+TCch/74=; h=From:To:Subject:Date:In-Reply-To:References:From; b=rM91BBh5Uw/G52oyku5WETn0DTh7XBbEfFE1fe4QxghYSQsg8JVEViMJURqj5lwVT 2cx2vOU3M3+huO7igDadHdDhNnzF0fhFG6F44F0gFIg7ypOmCEU5P3GbTODTDdYd40 oZJTlpaM53TynbzPGDzrmErjCQDdjcSe97QX3v/8= From: "burnus at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/113163] [14 Regression][GCN] ICE in vect_peel_nonlinear_iv_init, at tree-vect-loop.cc:9420 Date: Thu, 28 Dec 2023 12:27:30 +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: 14.0 X-Bugzilla-Keywords: ice-on-valid-code X-Bugzilla-Severity: normal X-Bugzilla-Who: burnus at gcc dot gnu.org 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: 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=3D113163 --- Comment #5 from Tobias Burnus --- While higher at the call stack: #3 0x000000000148714f in vect_transform_loop (loop_vinfo=3Dloop_vinfo@entry=3D0x350f2a0, loop_vectorized_call=3Dloop_vectorized_call@entry=3D0x0) at src/gcc-mainline/gcc/tree-vect-loop.cc:11911 11911 epilogue =3D vect_do_peeling (loop_vinfo, niters, nitersm1, &niters_vector, (gdb) p debug_tree(niters) constant 6> One level down: #2 0x0000000001498154 in vect_do_peeling (loop_vinfo=3Dloop_vinfo@entry=3D0x350f2a0, niters=3D, niters@entry=3D0x7ffff7bb2030,=20 nitersm1=3Dnitersm1@entry=3D0x7ffff7bb2c78, niters_vector=3Dniters_vector@entry=3D0x7fffffffda60, step_vector=3Dstep_vector@entry=3D0x7fffffffda68,=20 niters_vector_mult_vf_var=3Dniters_vector_mult_vf_var@entry=3D0x7ffffff= fda70, th=3D, check_profitability=3D,=20 niters_no_overflow=3D, advance=3D) at src/gcc-mainline/gcc/tree-vect-loop-manip.cc:3399 3399 vect_update_ivs_after_vectorizer (loop_vinfo, niters_vector_mult_vf, where niters_vector_mult_vf is ssa_name that fails in the assert. The variable seems to be generated a few lines up in the same function (line 3375 and following): if (!integer_onep (*step_vector)) { /* On exit from the loop we will have an easy way of calcalating NITERS_VECTOR / STEP * STEP. Install a dummy definition until then. */ niters_vector_mult_vf =3D make_ssa_name (TREE_TYPE (*niters_vecto= r)); SSA_NAME_DEF_STMT (niters_vector_mult_vf) =3D gimple_build_nop (); *niters_vector_mult_vf_var =3D niters_vector_mult_vf; } else vect_gen_vector_loop_niters_mult_vf (loop_vinfo, *niters_vector, &niters_vector_mult_vf);=