From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 72F503858D3C; Thu, 26 Aug 2021 20:35:42 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 72F503858D3C From: "zhendong.su at inf dot ethz.ch" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/102087] New: ICE on valid code at -O3 on x86_64-linux-gnu: in determine_exit_conditions, at tree-ssa-loop-manip.c:1049 Date: Thu, 26 Aug 2021 20:35:42 +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 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: Thu, 26 Aug 2021 20:35:42 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102087 Bug ID: 102087 Summary: ICE on valid code at -O3 on x86_64-linux-gnu: in determine_exit_conditions, at tree-ssa-loop-manip.c:1049 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: --- [540] % 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/12.0.0/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 --enable-multilib --with-system-zlib Thread model: posix Supported LTO compression algorithms: zlib gcc version 12.0.0 20210826 (experimental) [master revision 352d5e85a70:96f76144c4d:5a6c626710ad2ac4baa2dba02fac0750177e3305] (GCC) [541] % [541] % gcctk -O2 small.c [542] % [542] % gcctk -O3 small.c during GIMPLE pass: unrolljam small.c: In function =E2=80=98main=E2=80=99: small.c:4:5: internal compiler error: in determine_exit_conditions, at tree-ssa-loop-manip.c:1049 4 | int main() { | ^~~~ 0xfe4bea determine_exit_conditions ../../gcc-trunk/gcc/tree-ssa-loop-manip.c:1049 0xfe4bea tree_transform_and_unroll_loop(loop*, unsigned int, edge_def*, tree_niter_desc*, void (*)(loop*, void*), void*) ../../gcc-trunk/gcc/tree-ssa-loop-manip.c:1253 0x19ed2eb tree_loop_unroll_and_jam ../../gcc-trunk/gcc/gimple-loop-jam.c:590 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See for instructions. [543] % [543] % cat small.c volatile int a[1]; unsigned b; int c; int main() { int d; for (; b > 1; b++) for (c =3D 0; c < 2; c++) for (d =3D 0; d < 2; d++) a[0]; return 0; }=