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RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.6/changes.html,v
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<li>A new switch <code>-fstack-usage</code> has been added. It makes
the compiler output stack usage information for the program, on a
per-function basis, in an auxiliary file.</li>
+ <li>A new switch <code>-fcombine-stack-adjustments</code> has been added.
+ It can be used to enable or disable the compiler's stack-slot combining
+ pass before was enabled automatically at <code>-O1</code> and above, but
+ could not be controlled on its own.</li>
</ul>
<h2>Compile time and memory usage improvements</h2>