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Re: [patch] Remove -fconserve-space
- From: Gerald Pfeifer <gerald at pfeifer dot com>
- To: Steven Bosscher <stevenb dot gcc at gmail dot com>
- Cc: Jason Merrill <jason at redhat dot com>, GCC Patches <gcc-patches at gcc dot gnu dot org>
- Date: Sun, 26 Aug 2012 02:15:01 +0200 (CEST)
- Subject: Re: [patch] Remove -fconserve-space
- References: <CABu31nO=syBeojwVknp94KfhyF=PO1dLYo8hS8Do8VgtPa7qYQ@mail.gmail.com>
On Wed, 6 Jun 2012, Steven Bosscher wrote:
> The attached patch removes the -fconserve-space flag, as discussed last
> week. Bootstrapped&tested on powerpc64-unknown-linux-gnu. OK for trunk?
How about the following for the release notes?
(Happy to use a different/better rationale. This one's borrowed
from the old documentation. ;)
Gerald
Index: changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.8/changes.html,v
retrieving revision 1.17
diff -u -3 -p -r1.17 changes.html
--- changes.html 20 Aug 2012 12:23:39 -0000 1.17
+++ changes.html 26 Aug 2012 00:11:29 -0000
@@ -38,7 +38,7 @@ explicit use of vector types may be inco
built with older versions of GCC. Auto-vectorized code is not affected
by this change.</p>
-<h2>General Optimizer Improvements</h2>
+<h2>General Optimizer Improvements (and Changes)</h2>
<ul>
<li>A new option <code>-ftree-partial-pre</code> was added to control
@@ -46,6 +46,9 @@ by this change.</p>
This option is enabled by default at the <code>-O3</code> optimization
level, and it makes PRE more aggressive.
</li>
+ <li>The option <code>-fconserve-space</code> has been removed; it
+ was no longer useful on most targets since GCC supports putting
+ variables into BSS without making them common.</li>
</ul>