From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 26972 invoked by alias); 22 Jun 2011 03:28:44 -0000 Received: (qmail 26963 invoked by uid 22791); 22 Jun 2011 03:28:44 -0000 X-SWARE-Spam-Status: No, hits=-2.1 required=5.0 tests=AWL,BAYES_00 X-Spam-Check-By: sourceware.org Received: from dair.pair.com (HELO dair.pair.com) (209.68.1.49) by sourceware.org (qpsmtpd/0.43rc1) with SMTP; Wed, 22 Jun 2011 03:28:30 +0000 Received: (qmail 55318 invoked by uid 20157); 22 Jun 2011 03:28:29 -0000 Received: from localhost (sendmail-bs@127.0.0.1) by localhost with SMTP; 22 Jun 2011 03:28:29 -0000 Date: Wed, 22 Jun 2011 04:19:00 -0000 From: Hans-Peter Nilsson To: Jeff Law cc: gcc-patches Subject: Re: Improve jump threading #5 of N In-Reply-To: <4DF985ED.30406@redhat.com> Message-ID: References: <4DF985ED.30406@redhat.com> User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-IsSubscribed: yes Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org X-SW-Source: 2011-06/txt/msg01650.txt.bz2 On Wed, 15 Jun 2011, Jeff Law wrote: > So as I've mentioned previously, I've been working on a relatively small > change to the jump threading code which would allow it to duplicate a > join block when doing so allows us to thread through a successor of the > join block. This is expected to be the last extension to the existing > jump threading code. > Bootstrapped and regression tested on x86_64-unknown-linux-gnu. It seems this caused a warning regression, PR49498, for some but not all targets, see the PR. brgds, H-P