Information stored for decls.
Referenced by debug_var_infos_r(), get_common_info(), get_reaching_def(), insert_phi_nodes(), maybe_replace_use_in_debug_stmt(), register_new_def(), register_new_update_single(), rewrite_debug_stmt_uses(), and update_ssa().
Referenced by debug_var_infos_r(), var_info_hasher::equal(), get_var_info(), var_info_hasher::hash(), insert_phi_nodes(), insert_phi_nodes_compare_var_infos(), rewrite_debug_stmt_uses(), and rewrite_update_leave_block().