extend.texi (SPU Built-in Functions): Remove stale references to material formerly at IBM and Sony.

	* doc/extend.texi (SPU Built-in Functions): Remove stale
	references to material formerly at IBM and Sony.

From-SVN: r239797

gcc/ChangeLog

+2016-08-27  Gerald Pfeifer  <gerald@pfeifer.com>
+
+	* doc/extend.texi (SPU Built-in Functions): Remove stale
+	references to material formerly at IBM and Sony.
+
 2016-08-26  David Edelsohn  <dje.gcc@gmail.com>
 
 	PR target/77349

gcc/doc/extend.texi

@@ -18600,9 +18600,7 @@ v2si __builtin_vis_fpminu32 (v2si, v2si);
 @subsection SPU Built-in Functions
 
 GCC provides extensions for the SPU processor as described in the
-Sony/Toshiba/IBM SPU Language Extensions Specification, which can be
-found at @uref{http://cell.scei.co.jp/} or
-@uref{http://www.ibm.com/developerworks/power/cell/}.  GCC's
+Sony/Toshiba/IBM SPU Language Extensions Specification.  GCC's
 implementation differs in several ways.
 
 @itemize @bullet