From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id B15CA3858C1F; Sun, 23 Jul 2023 23:47:11 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B15CA3858C1F DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1690156031; bh=D3UfGuJtyaRjI+zqgFPdCO7sLadxh1MUC9dcpbPdQxY=; h=From:To:Subject:Date:From; b=QUWIs/Nt1QHe61uL5ouC4vQ/FE+jg+KypOi94sirz1KeeivlcO1RFfk/IS3lt14vn 9/eSucRJ70TSSt5HrEj1lBkqDZSn18Rh2Nl99RMIFTRyLmKV/W0pvRhh35zo6spC5D 8GHESqqNqd5gsOo8KK7iphJ/aHHNtL6Do2hIO8XQ= From: "jemarch at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/110784] New: bpf: make use of the V4 sign-extended move instructions Date: Sun, 23 Jul 2023 23:47:11 +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: unknown X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: jemarch 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: bug_id short_desc product version bug_status bug_severity priority component assigned_to reporter target_milestone 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 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110784 Bug ID: 110784 Summary: bpf: make use of the V4 sign-extended move instructions Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: jemarch at gcc dot gnu.org Target Milestone: --- The BPF V4 ISA introduces three new instructions to move 16-, 32- and 64-bit signed values to 64-bit registers with sign extension. We shall make GCC to use these instructions whenever feasible/desirable, but only with -mcpu=3Dv= 4 or later.=