From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on yquem.inria.fr X-Spam-Level: X-Spam-Status: No, score=0.6 required=5.0 tests=AWL,SUBJ_ALL_CAPS autolearn=disabled version=3.1.3 X-Original-To: caml-list@yquem.inria.fr Delivered-To: caml-list@yquem.inria.fr Received: from mail2-relais-roc.national.inria.fr (mail2-relais-roc.national.inria.fr [192.134.164.83]) by yquem.inria.fr (Postfix) with ESMTP id CA299BC37 for ; Sun, 27 Sep 2009 19:18:54 +0200 (CEST) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AvcCADY7v0rRVllDgmdsb2JhbACbAwEBCwsIBxUDGbcShB4F X-IronPort-AV: E=Sophos;i="4.44,461,1249250400"; d="scan'208";a="33638479" Received: from elasmtp-scoter.atl.sa.earthlink.net ([209.86.89.67]) by mail2-smtp-roc.national.inria.fr with ESMTP; 27 Sep 2009 19:18:54 +0200 Received: from [69.254.201.214] (helo=[10.0.1.2]) by elasmtp-scoter.atl.sa.earthlink.net with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.67) (envelope-from ) id 1MrxOf-0005cc-BB for caml-list@inria.fr; Sun, 27 Sep 2009 13:18:53 -0400 Message-Id: <4E6F3027-5745-462D-AF10-30C868285D28@refined-audiometrics.com> From: David McClain To: caml-list@inria.fr Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v936) Subject: JIT & HLVM, LLVM Date: Sun, 27 Sep 2009 10:18:51 -0700 X-Mailer: Apple Mail (2.936) X-ELNK-Trace: 7a0ab3eafc8cf994b22988ad1c62733440683398e744b8a4922a055c482983b48aa71c4215efa0ee3ca473d225a0f487350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 69.254.201.214 X-Spam: no; 0.00; statically:01 byte-code:01 byte-code:01 statically:01 native:03 native:03 inheritance:03 dispatch:03 static:03 dbm:03 dbm:03 compiled:04 compiled:04 perhaps:05 interpreted:06 Ahh, I see from doing a bit more research that JIT does *not* run particularly faster than statically compiled code. But rather, it runs faster than interpreted byte-code. I remember many years ago speaking with David Robson, over lunch, about the upcoming changes in Smalltalk, using a form of JIT to improve performance of their method dispatch, and attempting to gain multiple inheritance in that manner for Smalltalk. But there, again, it is a case of attempting to improve on an interpreted byte-code, and not a case of improving over statically compiled native code. But with so many talented bodies working on LLVM, perhaps, in time, a way will be found to gain improvement over static native code. Dr. David McClain dbm@refined-audiometrics.com