From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: MPS experiment successful Date: Wed, 17 Apr 2024 22:21:02 +0300 Message-ID: <86y19bg5i9.fsf@gnu.org> References: <86le5cgmp3.fsf@gnu.org> <86bk68gfab.fsf@gnu.org> <867cgvho79.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="13775"; mail-complaints-to="usenet@ciao.gmane.io" Cc: emacs-devel@gnu.org To: Gerd =?utf-8?Q?M=C3=B6llmann?= Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Wed Apr 17 21:22:10 2024 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rxArC-0003O9-5O for ged-emacs-devel@m.gmane-mx.org; Wed, 17 Apr 2024 21:22:10 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rxAqM-0007Mc-4Q; Wed, 17 Apr 2024 15:21:18 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rxAqC-0007Ln-2I for emacs-devel@gnu.org; Wed, 17 Apr 2024 15:21:09 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rxAqA-0005ZV-2o; Wed, 17 Apr 2024 15:21:06 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=GlPR0JDCjskr0CINXLX++G6fQqsddXl65cBO/EUJIqA=; b=h5gPZqmcopAGXXgCwkiA MNketg2Fx1Cy4DxpxmxIEOZVudbHKPAJ99LLitmfmOHwNIzFsvjNBR4Sargl3MwtYH04kDzOE16HD q0ryp2wRMRLTad3/VkzTwkoTjpoOT3BMgjTrTS1NanGUqFbyT6mtSjFoRgIXS09yqVdnl/1Q3Ght6 F/wzDdCPRB+14V5P2P+qLBoAY808RZuFVmN1JjYmlUtOi+vEdVaM84492bBxs0adkBkRDJxWNHBMR 2PLRONNpw9FwS/i9jGxRm8EpPGEUcJk5+Fe9dy5Ab23SL5XpekO24RFQSCKWAFCW3GDyo0vZjzHEc hj8C0FOqP6LjeA==; In-Reply-To: (message from Gerd =?utf-8?Q?M?= =?utf-8?Q?=C3=B6llmann?= on Wed, 17 Apr 2024 20:34:47 +0200) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:317784 Archived-At: > From: Gerd Möllmann > Cc: emacs-devel@gnu.org > Date: Wed, 17 Apr 2024 20:34:47 +0200 > > > You mean --with-wide-int? > > Yes, I think that's it. With 64 bit words, this makes Lisp_Object 128 > bits, right? Possibly, except that no one uses that on a 64-bit platform, AFAIK. I use it for a 32-bit build, where it makes Lisp objects 64-bit. > If that's the case, MPS won't work because if demands that > references are of word/pointer size, AFAIU. Ouch! That's a real turn-off! > OTOH, hm, pointers will still be of word size, so maybe one could come > up with something clever. Don't know what ATM, though, especially when > you say you are using !USE_LSB_TAG. The --with-wide-int build doesn't need to use USE_LSB_TAG because there's more than enough bits at the MSB end. > > That and the previous item is a huge turn-off for me personally, FWIW, > > because I use exactly these two features. > > If you want !USE_LSB_TAG, someone (tm) could implement that :-). But > it's not there now, because I didn't want to get lost in the lisp.h > macro jungle while still learning MPS. Keep it simple, and so on... OK, but I cannot do anything with a branch I cannot build on my main development machine. So here we are.