Index: htdocs/index.html
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RCS file: /cvs/gcc/wwwdocs/htdocs/index.html,v
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 <dl class="news">

+<dt><span>IBM zEnterprise EC12 support</span>
+    <span class="date">[2012-10-10]</span></dt>
+<dd>Support for the latest release of the System z mainframe
+<a href="http://www.ibm.com/systems/z/hardware/zenterprise/zec12.html">zEC12</a>
+has been added to the architecture back-end.</dd>
+
 <dt><span><a href="gcc-4.7/">GCC 4.7.2</a> released</span>
     <span class="date">[2012-09-20]</span></dt>
     <dd></dd>
Index: htdocs/gcc-4.8/changes.html
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@@ -325,6 +325,29 @@
     command-line option.</li>
   </ul>

+<h3>S/390, System z</h3>
+  <ul>
+    <li>Support for the IBM zEnterprise zEC12 processor has been
+      added.  When using the <code>-march=zEC12</code> option, the
+      compiler will generate code making use of the following new
+      instructions:
+      <ul>
+	<li>load and trap instructions</li>
+	<li>2 new compare and trap instructions</li>
+	<li>rotate and insert selected bits - without CC clobber</li>
+      </ul>
+      The <code>-mtune=zEC12</code> option enables zEC12 specific
+      instruction scheduling without making use of new
+      instructions.</li>
+    <li>Register pressure sensitive insn scheduling is enabled by
+      default.</li>
+    <li>The IFUNC function attribute is enabled by default.</li>
+    <li>memcpy and memcmp invokations on big memory chunks or with
+      runtime lengths are not generated inline anymore when tuning for
+      z10 or higher.  The purpose is to make use of the IFUNC
+      optimized versions in Glibc.</li>
+  </ul>
+
 <h3 id="sh">SH</h3>
   <ul>
     <li>The default alignment settings have been reduced to be less aggressive.