IF_COND (if_stmt) = cond;
IF_COND (if_stmt) = copy_to_permanent (cond);
finish_if_stmt_cond (cond, if_stmt)     tree cond;     tree if_stmt;{  if (processing_template_decl)    {      if (last_tree != if_stmt)	RECHAIN_STMTS_FROM_LAST (if_stmt, IF_COND (if_stmt));      else	IF_COND (if_stmt) = cond;    }  else    {      emit_line_note (input_filename, lineno);      expand_start_cond (condition_conversion (cond), 0);    }}