ira-costs.c (record_reg_classes): Ignore alternatives that are not enabled.

	* ira-costs.c (record_reg_classes): Ignore alternatives that are
	not enabled.

From-SVN: r158186

gcc/ChangeLog

+2010-04-10  Bernd Schmidt  <bernd.schmidt@codesourcery.com>
+
+	* ira-costs.c (record_reg_classes): Ignore alternatives that are
+	not enabled.
+	
 2010-04-09  Uros Bizjak  <ubizjak@gmail.com>
 
 	PR target/43707

gcc/ira-costs.c

@@ -224,6 +224,14 @@ record_reg_classes (int n_alts, int n_ops, rtx *ops,
       int alt_fail = 0;
       int alt_cost = 0, op_cost_add;
 
+      if (!recog_data.alternative_enabled_p[alt])
+	{
+	  for (i = 0; i < recog_data.n_operands; i++)
+	    constraints[i] = skip_alternative (constraints[i]);
+
+	  continue;
+	}
+
       for (i = 0; i < n_ops; i++)
 	{
 	  unsigned char c;