From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Gregory Heytings Newsgroups: gmane.emacs.devel Subject: Re: Add more supported primitives in libgccjit IR (was: Shrinking the C core) Date: Mon, 21 Aug 2023 11:05:54 +0000 Message-ID: <77daee02cf12896f33b4@heytings.org> References: <20230809094655.793FC18A4654@snark.thyrsus.com> <877cpp914t.fsf@localhost> <83fs4dwwdo.fsf@gnu.org> <874jkt90a5.fsf@localhost> <87y1i57jqi.fsf@localhost> <87pm3h7h8k.fsf@localhost> <87h6ot7cf3.fsf@localhost> <87edjx7c0b.fsf@localhost> <831qfxw2cx.fsf@gnu.org> <87v8d95918.fsf@localhost> <87zg2lav4b.fsf@yahoo.com> <87sf8d57wf.fsf@localhost> <87r0nxatu1.fsf@yahoo.com> <87pm3h56ig.fsf@localhost> <87edjxarhz.fsf@yahoo.com> <87edjw4uw4.fsf@localhost> <77daee02cf1ba0db70c1@heytings.org> <87v8d8fzr9.fsf@localhost> Mime-Version: 1.0 Content-Type: text/plain; format=flowed; charset=us-ascii Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="34391"; mail-complaints-to="usenet@ciao.gmane.io" Cc: Po Lu , Andrea Corallo , Eli Zaretskii , ams@gnu.org, 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 Mon Aug 21 13:06:32 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 1qY2jv-0008ew-E1 for ged-emacs-devel@m.gmane-mx.org; Mon, 21 Aug 2023 13:06:31 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qY2jS-00064U-OP; Mon, 21 Aug 2023 07:06:02 -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 1qY2jQ-000647-Gv for emacs-devel@gnu.org; Mon, 21 Aug 2023 07:06:01 -0400 Original-Received: from heytings.org ([95.142.160.155]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qY2jO-0000BI-9q; Mon, 21 Aug 2023 07:06:00 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=heytings.org; s=20220101; t=1692615954; bh=v0TKck27x6CzVbAIYGX/eTIp3pFt8kLJBHyV71oOLH4=; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References:From; b=v5jKM3t44RhfswEIFkCE2ptJf175hAJi9JnPzS3o/0zD6MT9IWbhRwPl6jUQunETY uw52braw0UhszLZIT0HzVbsKmEvzY/CvurFvCEI++I78G6VV0A3/Yh2u+0CtebOw5F pcceNCOMyuf4Z/hoVWoi0WRE/kN65zcObBRDuo0xrqS2T+08vATaciBypl2S/cGDSB ZNqQ+O80sZIe1BnRVqqO2TKj3Ot33y5YyoCNctOssi+7+soxtQt2BjQ9S7ZZjWPhPl vqs/9IljeQ+5EyE85FsSN3q92EeV4xJRLo2RQfr6hc1MQskvwwd9gXkxMgFSl8YeWj yyAOMZXOT2V7g== In-Reply-To: <87v8d8fzr9.fsf@localhost> Received-SPF: pass client-ip=95.142.160.155; envelope-from=gregory@heytings.org; helo=heytings.org X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action 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:309054 Archived-At: >> I'm not sure elisp-benchmarks are representative enough of actual Elisp >> code... > > Any better ideas? > make check, for example. >> Look at data.c:arith_driver. You'll see that it's essentially a >> function which dispatches the handling of its arguments depending on >> their type... >> >> These integer/float/bignum types are not known at compilation time ... > > This is not correct. If you have something like (progn (setq x 1) (> x > 2)), compiler is actually able to determine the type of X at compilation > time. > For such a trivial example, yes, and probably for slightly more complex examples too. But in general, no. Take this equally trivial example: (setq a most-positive-fixnum) (setq a (1+ a)) The 'a' object was an integer, and became a bignum.