re PR tree-optimization/57537 (gcc.dg/vect/slp-widen-mult-half.c generating…

re PR tree-optimization/57537 (gcc.dg/vect/slp-widen-mult-half.c generating wrong code on PowerPC64)

	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.

From-SVN: r200000

gcc/ChangeLog

+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.
+
 2013-06-12  Richard Biener  <rguenther@suse.de>
 
 	* data-streamer.h (streamer_write_char_stream): CSE

gcc/tree-vect-patterns.c

@@ -640,7 +640,10 @@ vect_recog_widen_mult_pattern (vec<gimple> *stmts,
           && 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;
     }