This is a case of X86 vs x86, subtle, but meaningful.
Committed.
Gerald
Index: gcc-4.8/changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.8/changes.html,v
retrieving revision 1.137
diff -u -r1.137 changes.html
--- gcc-4.8/changes.html 28 Feb 2016 20:44:14 -0000 1.137
+++ gcc-4.8/changes.html 28 May 2016 23:55:25 -0000
@@ -597,7 +597,7 @@
one string literal argument, the ISA feature. For example,
<code>__builtin_cpu_supports("ssse3")</code> returns a positive integer
if the run-time CPU supports SSSE3 instructions. Please refer to the <a
-
href="https://gcc.gnu.org/onlinedocs/gcc/X86-Built-in-Functions.html#X86-Built-in-Functions";>
+ href="https://gcc.gnu.org/onlinedocs/gcc/x86-Built-in-Functions.html";>
user manual</a> for the list of valid ISA names recognized.</li>
</ul>
<p>Caveat: If these built-in functions are called before any static
