From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 32076 invoked by alias); 17 Sep 2008 14:49:25 -0000 Received: (qmail 31246 invoked by uid 48); 17 Sep 2008 14:48:05 -0000 Date: Wed, 17 Sep 2008 14:49:00 -0000 Message-ID: <20080917144805.31245.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug tree-optimization/37102] [4.3/4.4 Regression] out-of-SSA is broken In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "amacleod at redhat dot com" Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2008-09/txt/msg02026.txt.bz2 ------- Comment #16 from amacleod at redhat dot com 2008-09-17 14:48 ------- Created an attachment (id=16345) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16345&action=view) Potential patch #2 This is the other option, eliminate dead PHIs. compiling all of GCC .c files at -O3, it finds a total of 12 instances of dead phis, and 3 of those were "extra" ones made dead by elimination of the original dead PHI. This patch has not yet been bootstrapped and fully tested, its ongoing now. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37102