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From: "iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/48094] ld: warning: section has unexpectedly large size errors in objc/obj-c++ lto
Date: Sun, 12 Feb 2012 14:44:00 -0000	[thread overview]
Message-ID: <bug-48094-4-FdFWuyRzoX@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-48094-4@http.gcc.gnu.org/bugzilla/>

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48094

--- Comment #15 from Iain Sandoe <iains at gcc dot gnu.org> 2012-02-12 14:43:49 UTC ---
this var is a two element array consisting of two integer constants.

the var is marked 'preserve' (because it is read by the OBJC runtime, but not
referenced from the code).

we get one instance of the var per input object file to LTO.

we would like one instance in the output (assuming that the values are really
identical).

so, if we:
 mark the section as SECTION_MERGE
 mark the decl as TREE_READONLY

would we reasonably expect lto to merge them?
if that is not enough, what additional  constraints could be specified?


  parent reply	other threads:[~2012-02-12 14:44 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-03-12 17:31 [Bug lto/48094] New: " howarth at nitro dot med.uc.edu
2011-03-12 17:32 ` [Bug lto/48094] " howarth at nitro dot med.uc.edu
2011-03-12 17:49 ` iains at gcc dot gnu.org
2011-03-12 18:38 ` iains at gcc dot gnu.org
2011-03-13 12:13 ` iains at gcc dot gnu.org
2011-03-14  9:40 ` iains at gcc dot gnu.org
2011-11-14  0:05 ` iains at gcc dot gnu.org
2011-12-03 15:50 ` howarth at nitro dot med.uc.edu
2011-12-03 18:32 ` iains at gcc dot gnu.org
2011-12-05 15:25 ` howarth at nitro dot med.uc.edu
2011-12-05 15:31 ` howarth at nitro dot med.uc.edu
2011-12-05 17:24 ` iains at gcc dot gnu.org
2011-12-05 21:03 ` iains at gcc dot gnu.org
2011-12-06  0:50 ` steven at gcc dot gnu.org
2011-12-06  9:13 ` iains at gcc dot gnu.org
2012-02-12 14:44 ` iains at gcc dot gnu.org [this message]
2013-07-16 12:05 ` iains at gcc dot gnu.org
2013-07-16 19:12 ` iains at gcc dot gnu.org
2013-09-14 15:34 ` [Bug target/48094] " iains at gcc dot gnu.org
2013-09-14 15:36 ` iains at gcc dot gnu.org
2013-09-14 15:40 ` iains at gcc dot gnu.org
2013-09-15 18:32 ` mrs at gcc dot gnu.org
2014-04-07  6:41 ` dominiq at gcc dot gnu.org
2014-04-07  8:01 ` dominiq at gcc dot gnu.org

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