From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 3FCEF3858414; Fri, 25 Feb 2022 10:32:20 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 3FCEF3858414 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/104683] -march=haswell generates invalid instructions on Celeron Haswell CPUs Date: Fri, 25 Feb 2022 10:32:20 +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: 10.3.1 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: WAITING 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 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: Fri, 25 Feb 2022 10:32:20 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104683 --- Comment #2 from Richard Biener --- Same for -march=3Dbroadwell and -march=3Dskylake (G3900) btw (just browsing= Intel Ark database). Can't figure what's the "celeron/pentium" successor to the skylake family is to check if even newer SKUs are affected. As said changing -march=3Dskylake to not include AVX2 would be a bad idea, = adding -march=3Dskylake-noavx might work but then nobody would use that so I'm not= sure what's the point. But again - fun ... let's see if Intel manages to fuse of AVX for some Alderlake SKUs ...=