2013-06-12  Jakub Jelinek  <jakub@redhat.com>

	PR tree-optimization/57537
	* tree-vect-patterns.c (vect_recog_widen_mult_pattern): If
	vect_handle_widen_op_by_const, convert oprnd1 to half_type1.

--- gcc/tree-vect-patterns.c.jj	2013-05-17 10:53:10.000000000 +0200
+++ gcc/tree-vect-patterns.c	2013-06-12 09:49:30.151854270 +0200
@@ -640,7 +640,10 @@ vect_recog_widen_mult_pattern (vec<gimpl
           && vect_handle_widen_op_by_const (last_stmt, MULT_EXPR, oprnd1,
 		                            &oprnd0, stmts, type,
 					    &half_type0, def_stmt0))
-        half_type1 = half_type0;
+	{
+	  half_type1 = half_type0;
+	  oprnd1 = fold_convert (half_type1, oprnd1);
+	}
       else
         return NULL;
     }