From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 6A5F93857702; Wed, 28 Jun 2023 15:58:06 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 6A5F93857702 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1687967886; bh=ZuBXvdRxYMB3KcPlcykR7SOANRCEOvh8iMsA6zAdhg8=; h=From:To:Subject:Date:In-Reply-To:References:From; b=CDyGuHyVwSv4J0h5d+NAm3A4A6oITlsKPOSmtkMekbhIfaL2/luJLbP+fKXUgsPB8 RvW3AeKbCoRDgTkCOEBTZEI+Ve9LIrpLdPYvmTmFlRCjDWqeMrmAm3MgnRqsDcpsbl 3twD6V1/NyyYAJ0uFQT81qYha+m3cdMauL5FhuIA= From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/110457] Unnecessary movsx eax, dil Date: Wed, 28 Jun 2023 15:58:06 +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: 14.0 X-Bugzilla-Keywords: ABI, missed-optimization 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: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: keywords 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=3D110457 Andrew Pinski changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |ABI --- Comment #2 from Andrew Pinski --- Why do you think that? Iirc the x86_64 abi says the upper bits are undefined.=