genrecog.c (add_to_sequence): When processing a MATCH_PARALLEL...

	* genrecog.c (add_to_sequence): When processing a MATCH_PARALLEL,
	if pred->singleton != PARALLEL, issue a warning and pretend it was.
	Also issue a warning for any predicate we don't know about.

From-SVN: r85933

gcc/ChangeLog

+2004-08-12  Zack Weinberg  <zack@codesourcery.com>
+
+	* genrecog.c (add_to_sequence): When processing a MATCH_PARALLEL,
+	if pred->singleton != PARALLEL, issue a warning and pretend it was.
+	Also issue a warning for any predicate we don't know about.
+
 2004-08-12  Richard Henderson  <rth@redhat.com>
 
 	* config/i386/i386.c (internal_label_prefix): Export.

gcc/genrecog.c

@@ -974,8 +974,18 @@ add_to_sequence (rtx pattern, struct decision_head *last, const char *position,
 	      {
 		test->u.pred.data = pred;
 		allows_const_int = pred->codes[CONST_INT];
+		if (was_code == MATCH_PARALLEL
+		    && pred->singleton != PARALLEL)
+		  message_with_line (pattern_lineno,
+			"predicate '%s' used in match_parallel "
+			"does not allow only PARALLEL", pred->name);
+		else
 		  code = pred->singleton;
 	      }
+	    else
+	      message_with_line (pattern_lineno,
+			"warning: unknown predicate '%s' in '%s' expression",
+			pred_name, GET_RTX_NAME (was_code));
 	  }
 
 	/* Can't enforce a mode if we allow const_int.  */