| Message ID | alpine.LNX.2.00.1209041259240.4718@trevally.site |
|---|---|
| State | New |
| Headers | show |
On Tue, 4 Sep 2012, Gerald Pfeifer wrote: > 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? Looks good to me. Thanks, Richard. > 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> > > > >
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>