* tree.h (IS_EXPR_CODE_CLASS): New macro.

From-SVN: r18783

gcc/ChangeLog

+1998-03-22  Mark Mitchell  <mmitchell@usa.net>
+
+	* tree.h (IS_EXPR_CODE_CLASS): New macro.
+
 Mon Mar 23 23:18:48 1998  Jeffrey A Law  (law@cygnus.com)
 
 	* h8300.h (CONST_COSTS): Remove definition.

gcc/tree.h

@@ -51,6 +51,13 @@ enum tree_code {
 extern char tree_code_type[MAX_TREE_CODES];
 #define TREE_CODE_CLASS(CODE)	tree_code_type[(int) (CODE)]
 
+/* Returns non-zero iff CLASS is the tree-code class of an
+   expression.  */
+
+#define IS_EXPR_CODE_CLASS(CLASS) \
+  (CLASS == '<' || CLASS == '1' || CLASS == '2' || CLASS == '3' \
+   || CLASS == 'e')
+
 /* Number of argument-words in each kind of tree-node.  */
 
 extern int tree_code_length[MAX_TREE_CODES];