Fix typo in vect_recog_widen_shift_pattern

Noticed by Christophe on arm-none-linux-gnueabihf.

2018-07-02  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* tree-vect-patterns.c (vect_recog_widen_shift_pattern): Fix typo
	in dump string.

From-SVN: r262308

gcc/ChangeLog

+2018-07-02  Richard Sandiford  <richard.sandiford@arm.com>
+
+	* tree-vect-patterns.c (vect_recog_widen_shift_pattern): Fix typo
+	in dump string.
+
 2018-07-02  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/86363

gcc/tree-vect-patterns.c

@@ -1739,7 +1739,7 @@ vect_recog_widen_shift_pattern (vec<gimple *> *stmts, tree *type_out)
 {
   return vect_recog_widen_op_pattern (stmts, type_out, LSHIFT_EXPR,
 				      WIDEN_LSHIFT_EXPR, true,
-				      "vect_widen_shift_pattern");
+				      "vect_recog_widen_shift_pattern");
 }
 
 /* Detect a rotate pattern wouldn't be otherwise vectorized: