tree-ssa-loop-im.c (single_reachable_address): Skip constant arguments.

	* tree-ssa-loop-im.c (single_reachable_address) <PHI_NODE>:
	Skip constant arguments.

From-SVN: r88237

gcc/ChangeLog

 2004-09-28  Diego Novillo  <dnovillo@redhat.com>
 
+	* tree-ssa-loop-im.c (single_reachable_address) <PHI_NODE>:
+	Skip constant arguments.
+
+2004-09-28  Diego Novillo  <dnovillo@redhat.com>
+
 	* tree-ssa-alias.c (create_name_tags): If PTR points to a
 	volatile type, mark the tag volatile.
 	(get_tmt_for): If TAG_TYPE is a volatile type, mark the tag

gcc/tree-ssa-loop-im.c

@@ -982,8 +982,9 @@ single_reachable_address (struct loop *loop, tree stmt,
 
 	case PHI_NODE:
 	  for (i = 0; i < (unsigned) PHI_NUM_ARGS (stmt); i++)
-	    maybe_queue_var (PHI_ARG_DEF (stmt, i), loop,
-			     seen, queue, &in_queue);
+	    if (TREE_CODE (PHI_ARG_DEF (stmt, i)) == SSA_NAME)
+	      maybe_queue_var (PHI_ARG_DEF (stmt, i), loop,
+		               seen, queue, &in_queue);
 	  break;
 
 	default: