From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 51653 invoked by alias); 13 Mar 2015 08:43:41 -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 51567 invoked by uid 48); 13 Mar 2015 08:43:38 -0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug ipa/44563] GCC uses a lot of RAM when compiling a large numbers of functions Date: Fri, 13 Mar 2015 08:43:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: ipa X-Bugzilla-Version: 4.3.4 X-Bugzilla-Keywords: compile-time-hog, memory-hog X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: component cf_known_to_fail 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: 2015-03/txt/msg01398.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44563 Richard Biener changed: What |Removed |Added ---------------------------------------------------------------------------- Component|tree-optimization |ipa Known to fail| |5.0 --- Comment #30 from Richard Biener --- With all the patches I have for now we end up with a pure IPA issue: phase opt and generate : 193.97 (99%) usr 13.82 (93%) sys 207.75 (99%) wall 3311016 kB (94%) ggc ipa inlining heuristics : 140.48 (72%) usr 0.44 ( 3%) sys 141.13 (67%) wall 396289 kB (11%) ggc dominance computation : 2.99 ( 2%) usr 1.00 ( 7%) sys 3.89 ( 2%) wall 0 kB ( 0%) ggc integrated RA : 4.05 ( 2%) usr 0.85 ( 6%) sys 5.26 ( 3%) wall 1577496 kB (45%) ggc rest of compilation : 6.53 ( 3%) usr 1.67 (11%) sys 7.91 ( 4%) wall 155664 kB ( 4%) ggc unaccounted todo : 3.82 ( 2%) usr 1.07 ( 7%) sys 4.98 ( 2%) wall 0 kB ( 0%) ggc TOTAL : 195.46 14.79 210.23 3514948 kB everything <= 1% dropped. I wonder what that unaccounted todo is ;)