- /*
- * Look at all usages of a.
- * If there's one usage of a in the block of b, then
- * we check, if this use is dominated by b, if that's true
- * a and b interfere. Note that b must strictly dominate the user,
- * since if b is the last user of in the block, b and a do not
- * interfere.
- * 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;
+ be_add_module_list_opt(be_grp, "regalloc", "register allocator",
+ ®ister_allocators, (void**) &selected_allocator);