static int *congruence_classes;
static ir_node **block_order;
static int n_block_order;
-static bool create_preferences = true;
-static bool create_congruence_classes = true;
-static bool propagate_phi_registers = true;
+static int create_preferences = true;
+static int create_congruence_classes = true;
+static int propagate_phi_registers = true;
static const lc_opt_table_entry_t options[] = {
LC_OPT_ENT_BOOL("prefs", "use preference based coloring", &create_preferences),