From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id CEF05385800D; Mon, 17 Jan 2022 17:00:18 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org CEF05385800D From: "jakub at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/103676] [10/11/12 Regression] internal compiler error: in extract_constrain_insn, at recog.c:2671 Date: Mon, 17 Jan 2022 17:00:18 +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: 11.2.0 X-Bugzilla-Keywords: ice-on-valid-code, inline-asm, ra X-Bugzilla-Severity: normal X-Bugzilla-Who: jakub 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: 10.4 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: Mon, 17 Jan 2022 17:00:18 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103676 --- Comment #22 from Jakub Jelinek --- If we consider such an inline asm invalid, we could error on it, ICE is not= the right thing. But what exactly should we error on? Alternative containing multiple register classes for multi-word operands is still something used q= uite commonly in real-world, the problem is when the RA assigns it a reg spanning across those. Or do most backends restrict multi-word regs to start at a r= eg number divisible by the number of words they need?=