From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: "Alfred M. Szmidt" Newsgroups: gmane.emacs.devel Subject: Re: Shrinking the C core Date: Sun, 20 Aug 2023 14:54:43 -0400 Message-ID: References: <20230809094655.793FC18A4654@snark.thyrsus.com> <87jztzkgct.fsf@dataswamp.org> <87y1if8j8t.fsf@linux-m68k.org> <87y1ifi9fv.fsf@dataswamp.org> <87zg2uqdmv.fsf@localhost> <87edk3gbh3.fsf@dataswamp.org> <87jztvnuyb.fsf@localhost> <875y5bdutt.fsf@dataswamp.org> <87y1i6e1uh.fsf@localhost> <874jkub40o.fsf@dataswamp.org> <87jztqdw2l.fsf@localhost> <87msym9i4r.fsf@dataswamp.org> <877cpp914t.fsf@localhost> <871qfx8yfq.fsf@localhost> <87sf8d7hj0.fsf@localhost> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="14619"; mail-complaints-to="usenet@ciao.gmane.io" Cc: incal@dataswamp.org, emacs-devel@gnu.org To: Ihor Radchenko Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sun Aug 20 20:55:37 2023 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 1qXnaL-0003e6-NC for ged-emacs-devel@m.gmane-mx.org; Sun, 20 Aug 2023 20:55:37 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qXnZb-00050d-1I; Sun, 20 Aug 2023 14:54:51 -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 1qXnZW-00050E-Ak for emacs-devel@gnu.org; Sun, 20 Aug 2023 14:54:47 -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 1qXnZT-0002lj-RJ; Sun, 20 Aug 2023 14:54:43 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=Date:References:Subject:In-Reply-To:To:From: mime-version; bh=r7uVdvnzzEwmJJ5oHnX63x96JSB6Xz2yvk63P4Ze8VY=; b=AdDp3l6Wf4sb zFfTxHky4L1w51yzXFO1/py4JV24tnDzqf7TN9ia3SsBz5Wb08autiKn0/9jHNSWL1NlVL0im6iNt hUcRS3VjhgxZeIN1l4CBC54fO2CTi+ayRYYxBWYoPmLYyf5L5HqcO/tRFl+nlq4/3b7/A9gRi+1Bg 6XNmWwCVlMkoHMNCOVe+wDwweVjRLgo/6DYWYPlGjAhpp5XzbviiF9RiwrCqzhJwEfjoTFLMh7BYp PtUr86YCBtY3ypI+juw7u8K0xFBnH/jbsPJzZJBMMfjppJ4OZf/Wo+CfRfG4LUJ8isVPi5HQ8lZDh xDc+67bJvWT5AkmUoxOTug==; Original-Received: from ams by fencepost.gnu.org with local (Exim 4.90_1) (envelope-from ) id 1qXnZT-00005n-Li; Sun, 20 Aug 2023 14:54:43 -0400 In-Reply-To: <87sf8d7hj0.fsf@localhost> (message from Ihor Radchenko on Sun, 20 Aug 2023 17:25:23 +0000) 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:308982 Archived-At: > Does not look too bad in terms of the number of instructions. And I do > not see any obvious indirection. > > The Emacs VM will incure a switch to C for each call, SBCL doesn't. > You really cannot see the difference that makes? May you elaborate what you mean by "switch to C"? Emacs VM is running in C already. How does the decoding of bytecode to C happen? Please take a look at the source code, it isn't that gnarly...