From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id B3A5B3858CD1; Tue, 12 Mar 2024 00:13:55 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B3A5B3858CD1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1710202435; bh=/a7Dqh7txg/GpQZw8eiF1m7vbKb5FyyiRNzoABb6CTo=; h=From:To:Subject:Date:In-Reply-To:References:From; b=wy6//QFV8UVM+JOK2wZU7sND272Pl2JsvsGJ+hN/8p2abQhMm+a6G6jW39GLEQY/6 MhQ2C35KwecIT3xdpT9TLNTGoo1axO48j8bIWu2Q8VDXY/VyaUw6tnxOFCM3nwZGot W5uqFHi3eQzfoSZwdwWCNRqHCbX9hknsJK3XXV5g= From: "law at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/114310] [11/12/13/14 Regression] [aarch64] __sync_val_compare_and_swap fails on __int128_t with newval = 0 Date: Tue, 12 Mar 2024 00:13:54 +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: 8.5.0 X-Bugzilla-Keywords: ice-on-valid-code X-Bugzilla-Severity: normal X-Bugzilla-Who: law 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: 11.5 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc 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=3D114310 Jeffrey A. Law changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |law at gcc dot gnu.org --- Comment #2 from Jeffrey A. Law --- !?! That doesn't make any sense to me Andrew. This is a failure to match= the insn, not a constraint error. And given the existence of a zero register, isn't zero valid anywhere a general purpose register is valid?=