From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 19691 invoked by alias); 6 Dec 2013 13:43:41 -0000 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 Received: (qmail 19645 invoked by uid 48); 6 Dec 2013 13:43:38 -0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/38474] compile time explosion in dataflow_set_preserve_mem_locs at -O3 Date: Fri, 06 Dec 2013 13:43:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Version: 4.4.0 X-Bugzilla-Keywords: compile-time-hog, memory-hog, patch X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2013-12/txt/msg00502.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38474 --- Comment #75 from Richard Biener --- On trunk with the reduced testcase and -O2 (no -g): ipa inlining heuristics : 9.85 ( 5%) usr 0.00 ( 0%) sys 9.93 ( 5%) wall 1448 kB ( 0%) ggc tree PTA : 161.26 (78%) usr 0.30 (45%) sys 162.00 (78%) wall 42484 kB ( 8%) ggc expand vars : 3.06 ( 1%) usr 0.01 ( 2%) sys 3.06 ( 1%) wall 16074 kB ( 3%) ggc integrated RA : 4.46 ( 2%) usr 0.11 (17%) sys 4.56 ( 2%) wall 87144 kB (17%) ggc TOTAL : 205.49 0.66 206.80 513245 kB -O3 is in the same ballpark. I'll look at this again.