From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1LgM2C-00087T-FX for qemu-devel@nongnu.org; Sun, 08 Mar 2009 12:39:28 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1LgM2A-000852-Ki for qemu-devel@nongnu.org; Sun, 08 Mar 2009 12:39:27 -0400 Received: from [199.232.76.173] (port=35184 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LgM2A-00084j-En for qemu-devel@nongnu.org; Sun, 08 Mar 2009 12:39:26 -0400 Received: from fmmailgate01.web.de ([217.72.192.221]:52367) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1LgM29-00058u-Nv for qemu-devel@nongnu.org; Sun, 08 Mar 2009 12:39:26 -0400 Received: from smtp08.web.de (fmsmtp08.dlan.cinetic.de [172.20.5.216]) by fmmailgate01.web.de (Postfix) with ESMTP id 0D187FE594BC for ; Sun, 8 Mar 2009 17:39:25 +0100 (CET) Received: from [88.65.240.115] (helo=[192.168.1.4]) by smtp08.web.de with asmtp (TLSv1:AES256-SHA:256) (WEB.DE 4.110 #277) id 1LgM28-0001Mf-00 for qemu-devel@nongnu.org; Sun, 08 Mar 2009 17:39:24 +0100 Message-ID: <49B3F4BC.4090807@web.de> Date: Sun, 08 Mar 2009 17:39:24 +0100 From: Jan Kiszka MIME-Version: 1.0 References: <49B3D904.2090202@web.de> <761ea48b0903080803l7e481a96p4511076b7f69305a@mail.gmail.com> <49B3E5F3.3000209@web.de> <761ea48b0903080846p6a0c0bfcoc96dd2f37490dde0@mail.gmail.com> <49B3EB80.6080901@web.de> <761ea48b0903080912y49fdecd1g124f01a475c6243d@mail.gmail.com> In-Reply-To: <761ea48b0903080912y49fdecd1g124f01a475c6243d@mail.gmail.com> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigAC8BBBF17E898055F08DD562" Sender: jan.kiszka@web.de Subject: [Qemu-devel] Re: dyngen-exec.h cleanup Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigAC8BBBF17E898055F08DD562 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Laurent Desnogues wrote: > On Sun, Mar 8, 2009 at 5:00 PM, Jan Kiszka wrote: >> Laurent Desnogues wrote: > [...] >>> Yes, and I did the work for ARM. However when considering the >>> removal of AREG0, and after looking at generated code, I came >>> to the perhaps premature conclusion that removing it would not >>> bring me any speedup (at least for a not so register starved >>> target as x86_64). >> I don't think we are looking for speedup here, just for cleanup. Statu= s >> quo regarding performance after a conversion would be more than fine I= MHO. >=20 > I was ambiguous, I meant I expect slowdowns... But given how many > times I was wrong in the past when I thought some tricks would > speedup things, I should probably not trust my a priori. >=20 >>> Well dyngen-exec.h is long gone in my sources even though >>> AREG0 is still used. I would have to backtrack my changes to >>> see how I arrived to that, but for sure the first thing to do is to >>> remove cpu_T from ARM target. >> Yes, please share your wisdom! >=20 > Sorry if I sounded arrogant, I just wanted to highlight the fact one > can achieve your aim. As far as sharing goes, that's another > story. No, no, you didn't sound arrogant. I just forgot your boundary conditions= =2E But it's good to know that there might be a way to overcome dyngen-exec.h without dropping AREGs altogether in case performance requires this. Jan --------------enigAC8BBBF17E898055F08DD562 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iEYEARECAAYFAkmz9LwACgkQniDOoMHTA+kO/wCfYDIogipp1bIOhgKi4bovmnhT PQYAn1lqu9wH4A6cuq6nCtEFTlBBANH7 =c0n+ -----END PGP SIGNATURE----- --------------enigAC8BBBF17E898055F08DD562--