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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/61515] [4.10 Regression] Extremely long compile time for generated code
Date: Mon, 16 Jun 2014 11:19:00 -0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 4.10.0
X-Bugzilla-Keywords: compile-time-hog, memory-hog
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61515

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-06-16
                 CC|                            |law at gcc dot gnu.org
            Version|unknown                     |4.10.0
   Target Milestone|---                         |4.10.0
            Summary|Extremely long compile time |[4.10 Regression] Extremely
                   |for generated code          |long compile time for
                   |                            |generated code
     Ever confirmed|0                           |1

--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #6)
> 4.9 at -Os takes 5min and ~2.2GB of ram (points-to takes 20%, DF 33%)

trunk at -Os takes 15min and ~2.1GB of ram (dominator optimization takes 67%)

trunk at -O1 takes 14min and ~2GB of ram (still DOM at 62%)

So it seems that on trunk DOM regressed a lot.  Confirmed as 4.10 regression.