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From: "iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/53708] [4.8 Regression] Many failures of the objc tests with -O3 -fnext-runtime and -m32
Date: Sun, 17 Jun 2012 14:13:00 -0000	[thread overview]
Message-ID: <bug-53708-4-rmYq0PZPVU@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-53708-4@http.gcc.gnu.org/bugzilla/>

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53708

Iain Sandoe <iains at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-06-17
     Ever Confirmed|0                           |1

--- Comment #1 from Iain Sandoe <iains at gcc dot gnu.org> 2012-06-17 14:12:35 UTC ---
it is because (some, if not all) the ObjC Meta-data alignment is being changed
from 2 to 4.  (presumably so that they become eligible for vector ops).

However, the size/organization of the meta-data are fixed by the runtime,
external to GCC - thus we cannot adjust in this manner.

I think (but have yet to check) that the ObjC FE explicitly sets the alignment
of the items.  Presumably, the ME should honor that?

If not, some suggestion about how to enforce what is needed would be helpful.


  reply	other threads:[~2012-06-17 14:13 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-06-17 13:29 [Bug tree-optimization/53708] New: " dominiq at lps dot ens.fr
2012-06-17 14:13 ` iains at gcc dot gnu.org [this message]
2012-06-18  8:52 ` [Bug middle-end/53708] " rguenth at gcc dot gnu.org
2012-06-18 10:00 ` dominiq at lps dot ens.fr
2012-06-18 12:42 ` dominiq at lps dot ens.fr
2012-06-18 20:11 ` iains at gcc dot gnu.org
2012-06-19  8:47 ` dominiq at lps dot ens.fr
2012-06-19  9:19 ` rguenth at gcc dot gnu.org
2012-06-19  9:21 ` rguenth at gcc dot gnu.org
2012-10-30 15:48 ` bergner at gcc dot gnu.org
2012-10-30 17:11 ` rguenther at suse dot de
2012-10-30 18:27 ` bergner at gcc dot gnu.org
2012-10-30 18:38 ` jakub at gcc dot gnu.org
2012-10-31 15:33 ` law at redhat dot com
2012-11-01  2:48 ` bergner at gcc dot gnu.org
2012-11-03 14:02 ` bergner at gcc dot gnu.org
2012-11-03 14:06 ` bergner at gcc dot gnu.org

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