From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 947D33854577; Mon, 21 Nov 2022 12:49:55 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 947D33854577 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1669034995; bh=Uw2luPw+clsvB6APkPkTg0WXiebazmyrmenO9DSwMOM=; h=From:To:Subject:Date:In-Reply-To:References:From; b=ezORov1gPDbDVYdQYAoXBnv9vyXt4i896k3L3RJAVMjqoNWOeRw0RFuCGwC8QrLtD mAmoCCshQ4u1oOE2oJDYRyeyUwBI1WXGPqy27VsGrvkTIvNVn1XkoHEu4nfaizJgyF G2n901G5KLW+JLBcFr/EfZOgssE3FsfD4N85UMy0= From: "kevin.bracey at alifsemi dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/107714] MVE: Invalid addressing mode generated for VLD2 Date: Mon, 21 Nov 2022 12:49:55 +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: 12.2.0 X-Bugzilla-Keywords: wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: kevin.bracey at alifsemi 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: 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=3D107714 --- Comment #5 from Kevin Bracey --- I had a look at the GCC source. The vld2/vst2/vld4/vst4 instructions in mve= .md have reused the "Um" constraint used for vld/vst in Neon, which permi= ts both "!" and register offset. This needs to be tightened up - can't see an existing equivalent constraint. Perhaps "Um" can be given variant MVE/Neon behaviour, like "Uj".=