From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 23760 invoked by alias); 5 Aug 2014 09:07:48 -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 23728 invoked by uid 48); 5 Aug 2014 09:07:45 -0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug ipa/62016] [4.8/4.9/4.10 Regression] very slow compilation at -O3 on x86_64-linux-gnu Date: Tue, 05 Aug 2014 09:07:00 -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: 4.10.0 X-Bugzilla-Keywords: compile-time-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: 4.8.4 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: keywords bug_status cf_reconfirmed_on target_milestone short_desc everconfirmed 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: 2014-08/txt/msg00266.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62016 Richard Biener changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |compile-time-hog Status|UNCONFIRMED |NEW Last reconfirmed| |2014-08-05 Target Milestone|--- |4.8.4 Summary|very slow compilation at |[4.8/4.9/4.10 Regression] |-O3 on x86_64-linux-gnu |very slow compilation at | |-O3 on x86_64-linux-gnu Ever confirmed|0 |1 --- Comment #1 from Richard Biener --- Confirmed. 4.8 is slowest (very very slow), 4.9 is a lot better but still 100x slower than 4.7. 4.7: TOTAL : 0.09 0.01 0.10 6621 kB 4.8: 4.9: ipa inlining heuristics : 2.99 (93%) usr 0.12 (92%) sys 3.11 (93%) wall 406507 kB (99%) ggc 4.10 (take with grain of salt - unoptimized and with checking): ipa inlining heuristics : 6.81 (90%) usr 0.15 (94%) sys 6.95 (90%) wall 426678 kB (99%) ggc