From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id D82F2385EC58; Wed, 17 Mar 2021 12:58:49 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org D82F2385EC58 From: "wilco at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/98891] [10/11 regression] Neon logical operations not vectorized in DImode since g:cdfc0e863a03698a80c74896cbdc9f5c8c652e64 Date: Wed, 17 Mar 2021 12:58:49 +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: 11.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: wilco at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 10.3 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: 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: Wed, 17 Mar 2021 12:58:50 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98891 --- Comment #3 from Wilco --- Older GCCs only ever did this for vorn, not for other operations like add/sub/and/orr/eor, so current behaviour is now fully consistent, and I do= n't consider it a bug. One could argue these intrinsics should always map to Neon instructions rat= her than being optimized into 64-bit integer operations. However GCC never did support this except for vorn, so it's not clear whether there is an advanta= ge in changing this now.=