From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 76A343858C2C; Fri, 11 Feb 2022 07:34:54 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 76A343858C2C From: "jbeulich at suse dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/104497] New: SEGV during GIMPLE pass: pre Date: Fri, 11 Feb 2022 07:34:54 +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: 11.2.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: jbeulich at suse 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: 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: Fri, 11 Feb 2022 07:34:54 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104497 Bug ID: 104497 Summary: SEGV during GIMPLE pass: pre Product: gcc Version: 11.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: jbeulich at suse dot com Target Milestone: --- Compiling this // -msse2 (on ix86) or -msse4 or -mavx // -O0 and -O1 are okay; -Os and -O2 are not typedef float __attribute__((mode(SF), vector_size(16))) vec_t; extern vec_t src, inv; void aux(vec_t); void test(void) { unsigned int i; vec_t y; for (i =3D 0; i < (16 / 4); ++i) y[i] =3D (i & 1 ? inv : src)[i]; aux(y); } yields $ gccver=3D11.2.0-base gccx -Wall -W -Os -msse2 -c simd-test2.c during GIMPLE pass: pre simd-test2.c: In function =E2=80=98test=E2=80=99: simd-test2.c:10:6: internal compiler error: Segmentation fault 10 | void test(void) | ^~~~ 0x877d21a crash_signal /usr/local/src/gcc-11.2.0/gcc/toplev.c:327 0x88d5bdd phi_translate_1 /usr/local/src/gcc-11.2.0/gcc/tree-ssa-pre.c:1717 0x88d67f9 phi_translate /usr/local/src/gcc-11.2.0/gcc/tree-ssa-pre.c:1770 0x88d8d4b phi_translate_set /usr/local/src/gcc-11.2.0/gcc/tree-ssa-pre.c:1815 0x88d9067 compute_antic_aux /usr/local/src/gcc-11.2.0/gcc/tree-ssa-pre.c:2155 0x88da2c5 compute_antic /usr/local/src/gcc-11.2.0/gcc/tree-ssa-pre.c:2501 0x88da2c5 execute /usr/local/src/gcc-11.2.0/gcc/tree-ssa-pre.c:4386 This same code compiles fine with gcc 10.=