- * Uses of a not in b's block can be disobeyed, because the
- * check for a being live at the end of b's block is already
- * performed.
- */
- foreach_out_edge(a, edge) {
- const ir_node *user = edge->src;
- if(get_nodes_block(user) == bb && !is_Phi(user) && b != user && value_dominates(b, user))
- return 1;
- }
- }
- return 0;
+ * Uses of a not in b's block can be disobeyed, because the
+ * check for a being live at the end of b's block is already
+ * performed.
+ */
+ foreach_out_edge(a, edge) {
+ const ir_node *user = get_edge_src_irn(edge);
+ if(get_nodes_block(user) == bb && !is_Phi(user) && b != user && value_dominates(b, user))
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+/** The list of register allocators */
+static be_module_list_entry_t *register_allocators = NULL;
+static be_ra_t *selected_allocator = NULL;
+
+void be_register_allocator(const char *name, be_ra_t *allocator)
+{
+ if(selected_allocator == NULL)
+ selected_allocator = allocator;
+ be_add_module_to_list(®ister_allocators, name, allocator);
+}
+
+void be_allocate_registers(be_irg_t *birg)
+{
+ assert(selected_allocator != NULL);
+ if(selected_allocator != NULL) {
+ selected_allocator->allocate(birg);
+ }
+}
+
+void be_init_ra(void)
+{
+ lc_opt_entry_t *be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
+
+ be_add_module_list_opt(be_grp, "regalloc", "register allocator",
+ ®ister_allocators, (void**) &selected_allocator);