From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id A347C3858CDA; Tue, 30 Jan 2024 07:34:48 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org A347C3858CDA DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1706600088; bh=d5jkZApJEVVdhlZ8KCOsLYN9s8RXDW1b6V9KFuqCVuc=; h=From:To:Subject:Date:In-Reply-To:References:From; b=d+gX74uZjgm7NcQphkBaR81Za25XYrrWALfWS4QLCmmjT8nN4I4qXiDhhiH/SRamx uMb/AMQdJQd1zZoiIgqMygVVz7yyZXXzrF+WakBxTB5PkIv+XpLpN+XU6UGKfpKnr5 8vGHi0AnqVVIFyXeW1qSSpZZ1sRdO27gn9fwbxUI= From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/113657] [14 Regression] ICE Segmentation fault with -mstrict-align and __arm_data512_t since r14-1187-gd6b756447cd58b Date: Tue, 30 Jan 2024 07:34:48 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Version: 14.0 X-Bugzilla-Keywords: ice-on-valid-code X-Bugzilla-Severity: normal X-Bugzilla-Who: pinskia at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 14.0 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: everconfirmed cf_reconfirmed_on bug_status 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=3D113657 Andrew Pinski changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Last reconfirmed| |2024-01-30 Status|UNCONFIRMED |NEW --- Comment #1 from Andrew Pinski --- Confirmed. 8229 simplify_gen_subreg (TImode, operands[1], V8DImode, off= set) (gdb) p debug_rtx(operands[1]) (mem:V8DI (reg/f:DI 0 x0 [101]) [1 *ptr_2(D)+0 S64 A64]) $4 =3D void (gdb) p offset $5 =3D 0 That is due to: /* V8DI mode. */ VECTOR_MODE_WITH_PREFIX (V, INT, DI, 8, 5); ADJUST_ALIGNMENT (V8DI, 8); So maybe for strict alignment, we need to loop using DImode instead of TImo= de and hope ldp/stp pass optimizes it back into load/store pairs ...=