/* now all bits not set are possible colors */
free_col = (unsigned)rbitset_next(possible_cols, 0, true);
assert(!rbitset_is_empty(possible_cols, n_regs) && "No free color found. This can not be.");
/* now all bits not set are possible colors */
free_col = (unsigned)rbitset_next(possible_cols, 0, true);
assert(!rbitset_is_empty(possible_cols, n_regs) && "No free color found. This can not be.");