irop: add more generic function callbacks

include/libfirm/irop.h

@@ -256,6 +256,8 @@ typedef struct {
 	verify_proj_node_func verify_proj_node;     /**< Verify the Proj node. */
 	dump_node_func        dump_node;            /**< Dump a node. */
 	op_func               generic;              /**< A generic function pointer. */
+	op_func               generic1;             /**< A generic function pointer. */
+	op_func               generic2;             /**< A generic function pointer. */
 	const arch_irn_ops_t *be_ops;               /**< callbacks used by the backend. */
 } ir_op_ops;
 

ir/ir/irop.c

@@ -112,8 +112,11 @@ void ir_clear_opcodes_generic_func(void)
 
 	for (i = 0; i < n; ++i) {
 		ir_op *op = ir_get_opcode(i);
-		if (op != NULL)
-			op->ops.generic = (op_func)NULL;
+		if (op == NULL)
+			continue;
+		op->ops.generic  = (op_func)NULL;
+		op->ops.generic1 = (op_func)NULL;
+		op->ops.generic2 = (op_func)NULL;
 	}
 }