On Sat, Oct 3, 2009 at 19:40, Diego Novillo <dnovi...@google.com> wrote: > On Sat, Oct 3, 2009 at 18:24, Richard Guenther > <richard.guent...@gmail.com> wrote: >> On Sat, Oct 3, 2009 at 11:12 PM, Diego Novillo <dnovi...@google.com> wrote: >>> The LTO branch has been merged into trunk at revision 152434. >> >> Btw, I think this deserves a news entry on the main page as well as >> (obviously) >> an entry for gcc-4.5/changes.html. > > Yes. I will take care of both.
Done with this patch. Committed to wwwdocs. Diego. Index: htdocs/index.html =================================================================== RCS file: /cvs/gcc/wwwdocs/htdocs/index.html,v retrieving revision 1.718 diff -d -u -p -r1.718 index.html --- htdocs/index.html 19 Sep 2009 21:00:47 -0000 1.718 +++ htdocs/index.html 4 Oct 2009 01:01:32 -0000 @@ -45,6 +45,13 @@ mission statement</a>.</p> <dl class="news"> +<dt>October 3, 2009</dt> +<dd>The <a href="http://gcc.gnu.org/wiki/LinkTimeOptimization";>LTO</a> +branch has been merged into trunk. The next release of GCC will +feature a new whole-program optimizer, able to perform interprocedural +optimizations across different files, even if they are written in +different languages.</dd> + <dt>August 4, 2009</dt> <dd><a href="gcc-4.3/">GCC 4.3.4</a> has been released.</dd> Index: htdocs/svn.html =================================================================== RCS file: /cvs/gcc/wwwdocs/htdocs/svn.html,v retrieving revision 1.138 diff -d -u -p -r1.138 svn.html --- htdocs/svn.html 30 Sep 2009 05:10:15 -0000 1.138 +++ htdocs/svn.html 4 Oct 2009 01:01:32 -0000 @@ -175,11 +175,6 @@ the command <code>svn log --stop-on-copy <dd>The purpose of this branch is to develop an infrastructure for loop transforms using the polyhedral model.</dd> - <dt><a href="http://gcc.gnu.org/wiki/LinkTimeOptimization";>lto</a></dt> - <dd>This branch aims to implement link-time optimization. Patches - and discussion on this branch should be marked with the tag - <code>[lto]</code> in the subject line.</dd> - <dt><a href="http://gcc.gnu.org/wiki/LightweightIpo";>lw-ipo</a></dt> <dd>This branch aims to implement lightweight IPO. Patches and discussion on this branch should be marked with the tag @@ -950,6 +945,9 @@ be prefixed with the initials of the dis Michael Meissner, <a href="mailto:meiss...@linux.vnet.ibm.com";>meiss...@linux.vnet.ibm.com</a>.</dd> + <dt><a href="http://gcc.gnu.org/wiki/LinkTimeOptimization";>lto</a></dt> + <dd>This branch implemented link-time optimization.</dd> + </dl> </body> Index: htdocs/gcc-4.5/changes.html =================================================================== RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.5/changes.html,v retrieving revision 1.33 diff -d -u -p -r1.33 changes.html --- htdocs/gcc-4.5/changes.html 30 Sep 2009 18:25:32 -0000 1.33 +++ htdocs/gcc-4.5/changes.html 4 Oct 2009 01:01:32 -0000 @@ -48,6 +48,16 @@ supported before; for those a fall back is used if MPC is not available.</li> + <li>A new link-time optimizer has been added (<code>-flto</code>). + When this flag is used, GCC generates a bytecode representation of + each input file and writes it to special ELF sections in each + object file. When the object files are linked together, all the + function bodies are read from these ELF sections and instantiated + as if they had been part of the same translation unit. This + enables interprocedural optimizations to work across different + files (and even different languages), potentially improving the + performance of the generated code.</li> + </ul> <h2>New Languages and Language specific improvements</h2>
