From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 173F93858C2F; Mon, 15 Aug 2022 22:56:10 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 173F93858C2F From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/106632] New: undefined code causes assembler failure Date: Mon, 15 Aug 2022 22:56:09 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Version: 12.0 X-Bugzilla-Keywords: assemble-failure X-Bugzilla-Severity: normal X-Bugzilla-Who: pinskia at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: pinskia at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status keywords bug_severity priority component assigned_to reporter target_milestone cf_gcctarget Message-ID: 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, 15 Aug 2022 22:56:10 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106632 Bug ID: 106632 Summary: undefined code causes assembler failure Product: gcc Version: 12.0 Status: UNCONFIRMED Keywords: assemble-failure Severity: normal Priority: P3 Component: target Assignee: pinskia at gcc dot gnu.org Reporter: pinskia at gcc dot gnu.org Target Milestone: --- Target: riscv-linux-gnu Take: long f(long a, long b) { b =3D 66; return (a >> b) & 1; } This will produce: f: bexti a0,a0,66 ret Which is invalid assembly as rejected by gas: /tmp/ccTvKnLv.s: Assembler messages: /tmp/ccTvKnLv.s:8: Error: improper shift amount (66)=