Rename [su]sum_widen to widen_[su]sum to reflect correct standard names.

From-SVN: r227333

gcc/ChangeLog

+2015-08-30  Michael Collison  <michael.collison@linaro.org>
+
+	PR other/67320
+	* doc.md.texi: Rename [su]sum_widen to widen_[su]sum to reflect correct
+	standard names
+
 2015-08-30  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
 
 	* config/rs6000/rs6000.c (swap_web_entry): Enlarge

gcc/doc/md.texi

@@ -4946,10 +4946,10 @@ is of a wider mode, is computed and added to operand 3. Operand 3 is of a mode
 equal or wider than the mode of the absolute difference. The result is placed
 in operand 0, which is of the same mode as operand 3.
 
-@cindex @code{ssum_widen@var{m3}} instruction pattern
-@item @samp{ssum_widen@var{m3}}
-@cindex @code{usum_widen@var{m3}} instruction pattern
-@itemx @samp{usum_widen@var{m3}}
+@cindex @code{widen_ssum@var{m3}} instruction pattern
+@item @samp{widen_ssum@var{m3}}
+@cindex @code{widen_usum@var{m3}} instruction pattern
+@itemx @samp{widen_usum@var{m3}}
 Operands 0 and 2 are of the same mode, which is wider than the mode of
 operand 1. Add operand 1 to operand 2 and place the widened result in
 operand 0. (This is used express accumulation of elements into an accumulator