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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/61515] [4.9/4.10 Regression] Extremely long compile time for generated code
Date: Tue, 17 Jun 2014 19:34:00 -0000	[thread overview]
Message-ID: <bug-61515-4-6cBewDGrSB@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-61515-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61515

Jeffrey A. Law <law at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |law at redhat dot com
           Assignee|unassigned at gcc dot gnu.org      |law at redhat dot com

--- Comment #12 from Jeffrey A. Law <law at redhat dot com> ---
Fundamentally we don't have a way to know what equivalences we need to
invalidate.
Invalidation is, umm, painful.  The question in my mind is why are we getting
so many invalidations to start with.  That's the first thing to look at.

Honestly though, I really wonder if handling backedges is worth the effort,
even though it's important for one benchmark.


  parent reply	other threads:[~2014-06-17 19:34 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-15 23:23 [Bug tree-optimization/61515] New: " astrange at ithinksw dot com
2014-06-15 23:24 ` [Bug tree-optimization/61515] " astrange at ithinksw dot com
2014-06-16  2:40 ` pinskia at gcc dot gnu.org
2014-06-16  6:44 ` astrange at ithinksw dot com
2014-06-16  8:28 ` rguenth at gcc dot gnu.org
2014-06-16  9:45 ` rguenth at gcc dot gnu.org
2014-06-16  9:47 ` rguenth at gcc dot gnu.org
2014-06-16 11:19 ` [Bug tree-optimization/61515] [4.10 Regression] " rguenth at gcc dot gnu.org
2014-06-17 11:11 ` rguenth at gcc dot gnu.org
2014-06-17 11:23 ` rguenth at gcc dot gnu.org
2014-06-17 11:48 ` rguenth at gcc dot gnu.org
2014-06-17 12:00 ` [Bug tree-optimization/61515] [4.9/4.10 " rguenth at gcc dot gnu.org
2014-06-17 19:34 ` law at redhat dot com [this message]
2014-06-18  7:45 ` rguenther at suse dot de
2014-06-26 12:50 ` rguenth at gcc dot gnu.org
2014-07-16 13:28 ` jakub at gcc dot gnu.org
2014-10-21  9:39 ` [Bug tree-optimization/61515] [4.9/5 " rguenth at gcc dot gnu.org
2014-10-21  9:46 ` rguenth at gcc dot gnu.org
2014-10-21  9:52 ` rguenth at gcc dot gnu.org
2014-10-21  9:55 ` rguenth at gcc dot gnu.org
2014-10-21 10:05 ` rguenth at gcc dot gnu.org
2014-10-21 11:19 ` rguenth at gcc dot gnu.org
2014-10-21 11:59 ` rguenth at gcc dot gnu.org
2014-10-30 10:38 ` jakub at gcc dot gnu.org
2014-11-04 23:03 ` law at redhat dot com
2014-11-05 12:35 ` rguenth at gcc dot gnu.org
2014-11-06 21:45 ` law at redhat dot com
2014-11-07  8:33 ` rguenth at gcc dot gnu.org
2014-11-07 16:47 ` law at redhat dot com
2014-11-07 22:55 ` law at gcc dot gnu.org
2015-06-26 20:04 ` [Bug tree-optimization/61515] [4.9 " jakub at gcc dot gnu.org
2015-06-26 20:34 ` jakub at gcc dot gnu.org

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