From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 4074 invoked by alias); 7 Feb 2013 09:05:01 -0000 Received: (qmail 3767 invoked by uid 48); 7 Feb 2013 09:04:38 -0000 From: "Joost.VandeVondele at mat dot ethz.ch" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/53852] [4.8 Regression] -ftree-loop-linear: large compile time / memory usage Date: Thu, 07 Feb 2013 09:05:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Keywords: compile-time-hog, memory-hog X-Bugzilla-Severity: normal X-Bugzilla-Who: Joost.VandeVondele at mat dot ethz.ch X-Bugzilla-Status: NEW X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.8.0 X-Bugzilla-Changed-Fields: CC 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: 2013-02/txt/msg00629.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53852 Joost VandeVondele changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |grosser at gcc dot gnu.org --- Comment #7 from Joost VandeVondele 2013-02-07 09:04:36 UTC --- I assume this PR is also a result of the PPL to ISL change ? Is there anything in place that could be used to avoid this exponential complexity ? The pattern in comment #5 seems not too exotic.