From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id AB8AE3857C75; Mon, 15 Nov 2021 17:21:41 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org AB8AE3857C75 From: "asolokha at gmx dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/103253] [12 Regression] ICE: Segmentation fault (in convert_mult_to_fma or in vect_recog_mask_conversion_pattern) Date: Mon, 15 Nov 2021 17:21:41 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 12.0 X-Bugzilla-Keywords: ice-on-valid-code X-Bugzilla-Severity: normal X-Bugzilla-Who: asolokha at gmx dot com 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: short_desc 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: Mon, 15 Nov 2021 17:21:41 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103253 Arseny Solokha changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|[12 Regression] ICE: |[12 Regression] ICE: |Segmentation fault (in |Segmentation fault (in |convert_mult_to_fma) |convert_mult_to_fma or in | |vect_recog_mask_conversion_ | |pattern) --- Comment #1 from Arseny Solokha --- And compiling the following testcase, reduced from the same original file, = w/ -march=3Dknm -O2 -fassociative-math -fopenmp -fno-delete-dead-exceptions -fno-signed-zeros -fno-trapping-math, yields this instead: double do_work (double *A, double do_work_pri) { int i; #pragma omp simd for (i =3D 0; i < 30; ++i) do_work_pri =3D !i ? 0.5 : i * 0.5 + A[i]; return do_work_pri; } % x86_64-unknown-linux-gnu-g++-12.0.0 -march=3Dknm -O2 -fassociative-math -fopenmp -fno-delete-dead-exceptions -fno-signed-zeros -fno-trapping-math -c qozmqkqm.c during GIMPLE pass: slp qozmqkqm.c: In function 'double do_work(double*, double)': qozmqkqm.c:2:1: internal compiler error: Segmentation fault 2 | do_work (double *A, double do_work_pri) | ^~~~~~~ 0x1182a5f crash_signal =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc= c/toplev.c:322 0x2011579 contains_struct_check(tree_node*, tree_node_structure_enum, char const*, int, char const*) =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc= c/tree.h:3554 0x2011579 vect_recog_mask_conversion_pattern =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc= c/tree-vect-patterns.c:4509 0x20125ca vect_pattern_recog_1 =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc= c/tree-vect-patterns.c:5689 0x2019d1d vect_pattern_recog(vec_info*) =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc= c/tree-vect-patterns.c:5846 0x142cb0a vect_slp_analyze_bb_1 =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc= c/tree-vect-slp.c:5737 0x142cb0a vect_slp_region =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc= c/tree-vect-slp.c:5846 0x142ec2b vect_slp_bbs =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc= c/tree-vect-slp.c:6038 0x142f09b vect_slp_function(function*) =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc= c/tree-vect-slp.c:6126 0x1435ad1 execute =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gc= c/tree-vectorizer.c:1459 (Note g++ instead of gcc here.)=