From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 12542 invoked by alias); 8 May 2012 13:20:30 -0000 Received: (qmail 12497 invoked by uid 22791); 8 May 2012 13:20:29 -0000 X-SWARE-Spam-Status: No, hits=-4.3 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,KHOP_THREADED,TW_TM X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Tue, 08 May 2012 13:20:04 +0000 From: "matz at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/53226] memory consumption for heavy template instantiations increased massively Date: Tue, 08 May 2012 13:25:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c++ X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: matz at gcc dot gnu.org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: matz at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 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: 2012-05/txt/msg00882.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53226 --- Comment #13 from Michael Matz 2012-05-08 13:19:42 UTC --- (In reply to comment #10) > The other way is to try to get away without immediately removing propagated > source stmts - the obvious downside is that transforms relying on > single-use definitions will be confused by those dead uses Just for completeness: If we would simply NOP out the to-be-removed statements that would be taken care of. Additionally iterator copies to those non-removed stmts wouldn't break.