added function to retrieve irn ops

ir/be/bearch.c

@@ -87,6 +87,10 @@ get_irn_ops(const arch_env_t *env, const ir_node *irn)
   return fallback_irn_ops;
 }
 
+const arch_irn_ops_t *arch_get_irn_ops(const arch_env_t *env, const ir_node *irn) {
+	return get_irn_ops(env, irn);
+}
+
 const arch_register_req_t *arch_get_register_req(const arch_env_t *env,
     arch_register_req_t *req, const ir_node *irn, int pos)
 {

ir/be/bearch.h

@@ -348,6 +348,8 @@ struct _arch_irn_ops_t {
 	const arch_irn_ops_if_t *impl;
 };
 
+extern const arch_irn_ops_t *arch_get_irn_ops(const arch_env_t *env, const ir_node *irn);
+
 extern void arch_set_frame_offset(const arch_env_t *env, ir_node *irn, int bias);
 
 extern entity *arch_get_frame_entity(const arch_env_t *env, ir_node *irn);