Newsgroups: php.internals Path: news.php.net Xref: news.php.net php.internals:46679 Return-Path: Mailing-List: contact internals-help@lists.php.net; run by ezmlm Delivered-To: mailing list internals@lists.php.net Received: (qmail 12361 invoked from network); 13 Jan 2010 11:18:08 -0000 Received: from unknown (HELO lists.php.net) (127.0.0.1) by localhost with SMTP; 13 Jan 2010 11:18:08 -0000 Authentication-Results: pb1.pair.com header.from=mathieu.suen@easyflirt.com; sender-id=pass Authentication-Results: pb1.pair.com smtp.mail=mathieu.suen@easyflirt.com; spf=pass; sender-id=pass Received-SPF: pass (pb1.pair.com: domain easyflirt.com designates 91.199.255.56 as permitted sender) X-PHP-List-Original-Sender: mathieu.suen@easyflirt.com X-Host-Fingerprint: 91.199.255.56 python-06.easyrencontre.com Linux 2.6 Received: from [91.199.255.56] ([91.199.255.56:54468] helo=mail.easyflirt.com) by pb1.pair.com (ecelerity 2.1.1.9-wez r(12769M)) with ESMTP id A6/B7-00773-FEBAD4B4 for ; Wed, 13 Jan 2010 06:18:08 -0500 Received: from [192.168.0.51] (office.easyrencontre.com [78.155.152.6]) by mail.easyflirt.com (Postfix) with ESMTPSA id B857D6374EC for ; Wed, 13 Jan 2010 12:18:04 +0100 (CET) Message-ID: <4B4DABED.4060202@easyflirt.com> Date: Wed, 13 Jan 2010 12:18:05 +0100 User-Agent: Thunderbird 2.0.0.23 (X11/20090817) MIME-Version: 1.0 To: internals@lists.php.net Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: About optimization From: mathieu.suen@easyflirt.com ("mathieu.suen") Hi, I would like to know why the opcode is not optimized. Even for some very simple optimization like constant folding. For exemple: line # op fetch ext return operands ------------------------------------------------------------------------------- 60 0 ADD ~0 5, 7 1 ECHO ~0 which is "echo 5+7;" -- Mathieu Suen