+ memset(env, 0, sizeof(*env));
+ obstack_init(&env->obst);
+ env->arch_env = obstack_alloc(&env->obst, sizeof(env->arch_env[0]));
+ env->options = &be_options;
+ FIRM_DBG_REGISTER(env->dbg, "be.main");
+
+ arch_env_init(env->arch_env, isa_if);
+
+ /* Register the irn handler of the architecture */
+ if (arch_isa_get_irn_handler(env->arch_env->isa))
+ arch_env_push_irn_handler(env->arch_env, arch_isa_get_irn_handler(env->arch_env->isa));
+
+ /*
+ * Register the node handler of the back end infrastructure.
+ * This irn handler takes care of the platform independent
+ * spill, reload and perm nodes.
+ */
+ arch_env_push_irn_handler(env->arch_env, &be_node_irn_handler);
+ env->phi_handler = be_phi_handler_new(env->arch_env);
+ arch_env_push_irn_handler(env->arch_env, env->phi_handler);
+
+ return env;
+}