becopyopt: Simplify co_dump_appel_disjoint_constraints().

diff --git a/ir/be/becopyopt.c b/ir/be/becopyopt.c
index 51d0684..1e67bd5 100644 (file)
--- a/ir/be/becopyopt.c
+++ b/ir/be/becopyopt.c
@@ -821,25 +821,17 @@ int co_gs_is_optimizable(copy_opt_t const *const co, ir_node *const irn)
        return n && n->neighbours;
 }
 
-static int co_dump_appel_disjoint_constraints(const copy_opt_t *co, ir_node *a, ir_node *b)
+static bool co_dump_appel_disjoint_constraints(ir_node *const a, ir_node *const b)
 {
-       ir_node *nodes[]  = { a, b };
-       bitset_t *constr[] = { NULL, NULL };
-       int j;
+       arch_register_req_t const *const reqa = arch_get_irn_register_req(a);
+       if (!arch_register_req_is(reqa, limited))
+               return false;
 
-       constr[0] = bitset_alloca(co->cls->n_regs);
-       constr[1] = bitset_alloca(co->cls->n_regs);
+       arch_register_req_t const *const reqb = arch_get_irn_register_req(b);
+       if (!arch_register_req_is(reqb, limited))
+               return false;
 
-       for (j = 0; j < 2; ++j) {
-               const arch_register_req_t *req = arch_get_irn_register_req(nodes[j]);
-               if (arch_register_req_is(req, limited))
-                       rbitset_copy_to_bitset(req->limited, constr[j]);
-               else
-                       bitset_set_all(constr[j]);
-
-       }
-
-       return !bitset_intersect(constr[0], constr[1]);
+       return !rbitsets_have_common(reqa->limited, reqb->limited, reqa->cls->n_regs);
 }
 
 /**
@@ -902,7 +894,7 @@ static void co_dump_appel_graph(const copy_opt_t *co, FILE *f)
 
                be_ifg_foreach_neighbour(ifg, &nit, irn, adj) {
                        if (!arch_irn_is_ignore(adj) &&
-                                       !co_dump_appel_disjoint_constraints(co, irn, adj)) {
+                                       !co_dump_appel_disjoint_constraints(irn, adj)) {
                                int adj_idx = node_map[get_irn_idx(adj)];
                                if (idx < adj_idx)
                                        fprintf(f, "%d %d -1\n", idx, adj_idx);