From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id 8129B1381F3 for ; Wed, 22 May 2013 04:50:03 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id C7F83E0845; Wed, 22 May 2013 04:49:58 +0000 (UTC) Received: from smtp.gentoo.org (smtp.gentoo.org [140.211.166.183]) (using TLSv1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 8BB60E083E for ; Wed, 22 May 2013 04:49:57 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp.gentoo.org (Postfix) with ESMTP id ACB2533E2CE for ; Wed, 22 May 2013 04:49:56 +0000 (UTC) X-Virus-Scanned: by amavisd-new using ClamAV at gentoo.org X-Spam-Flag: NO X-Spam-Score: -1.688 X-Spam-Level: X-Spam-Status: No, score=-1.688 tagged_above=-999 required=5.5 tests=[AWL=-0.616, RCVD_IN_DNSWL_NONE=-0.0001, RP_MATCHES_RCVD=-1.07, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=unavailable Received: from smtp.gentoo.org ([IPv6:::ffff:127.0.0.1]) by localhost (smtp.gentoo.org [IPv6:::ffff:127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Ohh6IjC_OZYl for ; Wed, 22 May 2013 04:49:50 +0000 (UTC) Received: from plane.gmane.org (plane.gmane.org [80.91.229.3]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.gentoo.org (Postfix) with ESMTPS id 7097933E0B4 for ; Wed, 22 May 2013 04:49:47 +0000 (UTC) Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1Uf0ze-0001Vj-TS for gentoo-dev@gentoo.org; Wed, 22 May 2013 06:49:42 +0200 Received: from 71-17-69-121.yktn.hsdb.sasknet.sk.ca ([71.17.69.121]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 22 May 2013 06:49:42 +0200 Received: from dirtyepic by 71-17-69-121.yktn.hsdb.sasknet.sk.ca with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 22 May 2013 06:49:42 +0200 X-Injected-Via-Gmane: http://gmane.org/ To: gentoo-dev@lists.gentoo.org From: Ryan Hill Subject: [gentoo-dev] Re: CPU use flag detection Date: Tue, 21 May 2013 22:59:51 -0600 Organization: Gentoo Message-ID: <20130521225951.05528622@caribou.gateway.2wire.net> References: <20130515165957.3c9847e3@gentoo.org> <20130517223923.1ea9acbd@caribou.gateway.2wire.net> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-dev@lists.gentoo.org Reply-to: gentoo-dev@lists.gentoo.org Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA512; boundary="Sig_/KTRZjyYOtE7d_lL3uM_.vkd"; protocol="application/pgp-signature" X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: 71-17-69-121.yktn.hsdb.sasknet.sk.ca X-Newsreader: Claws Mail 3.9.1 (GTK+ 2.24.18; x86_64-pc-linux-gnu) X-Archives-Salt: d3c68486-b0e2-47be-b5fb-e36e37010d40 X-Archives-Hash: 06038b41971e03e6343e7175fa5677d9 --Sig_/KTRZjyYOtE7d_lL3uM_.vkd Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Sat, 18 May 2013 12:14:35 -0700 Matt Turner wrote: > > MMX2/MMXEXT still confuses me. >=20 > SSE1 and /Enhanced/ 3DNow! added some extra MMX instructions. Some > (pshufw and pmulhuw particularly) turn out to be rather useful in > software compositing. I use them in the pixman MMX code. >=20 > See http://mattst88.com/programming/asmref/ (Sorry about the broken > search box. It works, you just don't see what you type) Oh I am going to get a lot of use out of this. > Set Requires =3D Enhanced 3DNow!. The instructions that are listed as > 'Enhanced 3DNow! or SSE1' are what are known as MMX2 or MMXEXT. >=20 > The particularly annoying thing about using them is that there's no > -mmmx2 or -mmmxext, but turning on -msse causes illegal instructions > to be generated for old AMD or Geode CPUs, while -m3dnow causes the > same problems for Intel CPUs. And, there's not actually even an > -m3dnowext flag (anymore?) anyway, so it's kind of a mess. Ah, that explains why I always thought they were Enh 3DNow options. Looks = like I have them spread out between MMX and Enh 3DNow in analyze-x86. Oops. --=20 Ryan Hill psn: dirtyepic_sk gcc-porting/toolchain/wxwidgets @ gentoo.org 47C3 6D62 4864 0E49 8E9E 7F92 ED38 BD49 957A 8463 --Sig_/KTRZjyYOtE7d_lL3uM_.vkd Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.20 (GNU/Linux) iQEcBAEBCgAGBQJRnFDNAAoJEO04vUmVeoRj97AIAJewmIh+68BxEPctrAcO6set gDbXhalgmZisxO2DJ6o1xt6L6fXi9AGK5XZJ3DaH4arvP10SgyfKYQiIjy4CFjSU qxiCfw5QKVizgi/rxH/+LfRF8YPnvTuF2wIG7Irsw4l6uXkmItQgUD07NE35KnVF sXxd/OK1+ePM9oc/05UMl/NmLIyuWfFIyVr61pMevttq3lUV5gu5tc2PsRDA6Tcx v6SHNkyXNcnWdbV861dZZYlM69RjA2V4b9FWHkSte35L6JxZDeL6BZtLKCbQZfO/ xJfUIRlxF2ndMTTogafp/+eTK4ygUy+9rKlsitFy93KKBykCp3dXRNXbsocvStE= =eJml -----END PGP SIGNATURE----- --Sig_/KTRZjyYOtE7d_lL3uM_.vkd--