From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 7D9EF3858D28; Mon, 1 May 2023 20:54:50 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 7D9EF3858D28 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1682974490; bh=eHu2nWei9j/0tNCauQ78rPBfKqvTiVTcnyQoM98x7ew=; h=From:To:Subject:Date:From; b=AlnoQnqK/T4tmlekbLBT1e+fcDvHi9DA2tfnp8uaF56JLykrWP3lsja4SM1tI94Xz FH3DHf0STIvL4fpsLACJL9z5x91RycdLsN9d95XzUg6C3YdiKymysW798cdx5s33BA WFcY0NbXp56ZlzN2EcjQ0nqCb+f/97t+NoHpZ8eI= From: "zhendong.su at inf dot ethz.ch" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/109689] New: ICE at -O1 with "-ftree-vectorize": in check_loop_closed_ssa_def, at tree-ssa-loop-manip.cc:645 Date: Mon, 01 May 2023 20:54:49 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: unknown X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: zhendong.su at inf dot ethz.ch 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 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109689 Bug ID: 109689 Summary: ICE at -O1 with "-ftree-vectorize": in check_loop_closed_ssa_def, at tree-ssa-loop-manip.cc:645 Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: zhendong.su at inf dot ethz.ch Target Milestone: --- This appears to be a very recent regression. Compiler Explorer: https://godbolt.org/z/nv9dPa1Y7 [629] % gcctk -v Using built-in specs. COLLECT_GCC=3Dgcctk COLLECT_LTO_WRAPPER=3D/local/suz-local/software/local/gcc-trunk/libexec/gcc= /x86_64-pc-linux-gnu/14.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../gcc-trunk/configure --disable-bootstrap --prefix=3D/local/suz-local/software/local/gcc-trunk --enable-languages=3Dc= ,c++ --disable-werror --disable-multilib Thread model: posix Supported LTO compression algorithms: zlib gcc version 14.0.0 20230501 (experimental) (GCC) [630] % [630] % gcctk -O1 -ftree-vectorize small.c during GIMPLE pass: ch_vect small.c: In function =E2=80=98main=E2=80=99: small.c:2:5: internal compiler error: in check_loop_closed_ssa_def, at tree-ssa-loop-manip.cc:645 2 | int main() { | ^~~~ 0x822c59 check_loop_closed_ssa_def ../../gcc-trunk/gcc/tree-ssa-loop-manip.cc:645 0x11cfc34 check_loop_closed_ssa_bb ../../gcc-trunk/gcc/tree-ssa-loop-manip.cc:659 0x11d18be verify_loop_closed_ssa(bool, loop*) ../../gcc-trunk/gcc/tree-ssa-loop-manip.cc:695 0x11d18be verify_loop_closed_ssa(bool, loop*) ../../gcc-trunk/gcc/tree-ssa-loop-manip.cc:679 0xf243f9 execute_function_todo ../../gcc-trunk/gcc/passes.cc:2116 0xf24bfe execute_todo ../../gcc-trunk/gcc/passes.cc:2152 Please submit a full bug report, with preprocessed source (by using -freport-bug). Please include the complete backtrace with any bug report. See for instructions. [631] % [631] % cat small.c int a, b, c, d, e; int main() { char f; while (a) { int g, h =3D 3; if (b) i: if (d) goto j; k: if (a) { j: if (!g) goto k; if (e) { while (e) e =3D f; h =3D 0; goto i; } if (!h) for (; g < 1; g++) ; g =3D ~((~c & h & c) ^ ~g); if (!g) for (; a < 1; a++) f++; } } return 0; }=