On Mon, 3 Sep 2012, Richard Guenther wrote:
> I'd not mention the command-line flags.
I was thinking to point out what to not use any longer, in case.
Doesn't that make sense for the release notes?
> They were not working correctly and they did not work with LTO
> which made them useless apart from for single-TU programs.
How about the following?
Gerald
Index: changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.8/changes.html,v
retrieving revision 1.26
diff -u -3 -p -r1.26 changes.html
--- changes.html 2 Sep 2012 15:56:24 -0000 1.26
+++ changes.html 4 Sep 2012 10:59:32 -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 +46,11 @@ 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 struct reorg and matrix reorg optimizations (command-line
+ options <code>-fipa-struct-reorg</code> and
+ <code>-fipa-matrix-reorg</code>) have been removed. They did not
+ work correctly nor with link-time optimization (LTO), hence were only
+ applicable to programs consisting of a single translation unit.</li>
</ul>
