From z Mon Dec 04 21:02:22 2000 Received: from maguro.epr.com ([198.3.162.27]) by exchange.epr.com with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2650.21) id WNKA3C5Q; Mon, 4 Dec 2000 11:59:36 -0800 Received: from magrathea.epr.com (firewall-user@magrathea.epr.com [198.3.160.1]) by maguro.epr.com (8.9.3/8.9.3) with ESMTP id MAA24166 for ; Mon, 4 Dec 2000 12:03:31 -0800 (PST) Received: (from uucp@localhost) by magrathea.epr.com (8.9.3/8.7.3) id MAA08864 for ; Mon, 4 Dec 2000 12:03:29 -0800 (PST) Received: from nodnsquery(199.222.69.4) by magrathea.epr.com via smap (V5.5) id xma008353; Mon, 4 Dec 00 12:02:36 -0800 Received: from clairv.com (IDENT:root@pc246.edi.nunet.net [199.249.165.246]) by mail.acm.org (8.9.3/8.9.3) with ESMTP id PAA54212 for ; Mon, 4 Dec 2000 15:02:31 -0500 Received: from magrathea.epr.com (firewall-user@magrathea.epr.com [198.3.163.3]) by clairv.com (8.9.3/8.9.3) with ESMTP id OAA00304 for ; Mon, 4 Dec 2000 14:02:31 -0600 Received: (from uucp@localhost) by magrathea.epr.com (8.9.3/8.7.3) id MAA08266 for ; Mon, 4 Dec 2000 12:02:29 -0800 (PST) Received: from unknown(198.3.162.27) by magrathea.epr.com via smap (V5.5) id xma008213; Mon, 4 Dec 00 12:02:23 -0800 Received: from eponym.epr.com (eponym.epr.com [10.1.1.123]) by maguro.epr.com (8.9.3/8.9.3) with ESMTP id MAA24080 for ; Mon, 4 Dec 2000 12:02:22 -0800 (PST) Received: (from sweeks@localhost) by eponym.epr.com (8.9.3/8.9.3) id MAA22336; Mon, 4 Dec 2000 12:02:22 -0800 From: "Stephen Weeks" MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <14891.63566.829709.576938@eponym.epr.com> Date: Mon, 4 Dec 2000 12:02:22 -0800 (PST) To: MLton@sourcelight.com Reply-to: MLton@sourcelight.com Subject: new liveness pass In-Reply-To: <14888.19238.403444.743590@eponym.epr.com> References: <14888.19238.403444.743590@eponym.epr.com> X-Mailer: VM 6.71 under 20.4 "Emerald" XEmacs Lucid X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on eponym.sweeks.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=3.0 tests=AWL autolearn=no version=2.60 > Also, here is the log for a self compile with the new pass. The self compile > time is down to 765 seconds. This is the first time we're under 800! The funny > thing is, the last self compile was at 948 seconds, so the difference can not be > explained by this pass alone. The (unchanged) x86 codegen sped up by 59 seconds! > My only conjecture is that the backend is leaving around some property lists on > labels, which is slowing down the codegen. The new liveness pass doesn't > leave quite as many around, so maybe that was helping. I'll look into making > sure the backend cleans up after itself. I figured out this discrepancy. I mistakenly ran the second self compile with a larger heap, which cut down dramatically on the gc time in the codegen. I don't think the backend was leaving around any property lists. Anyways, the time breakdown for the latest self compile is generate machine: 240 x86 code gen: 480 compile .s: 37 --- total 757