- /* Compute the admissible registers bitsets. */
- for (i = 0; i < insn->n_ops; ++i) {
- be_operand_t *op = &insn->ops[i];
- const arch_register_req_t *req = op->req;
- const arch_register_class_t *cls = req->cls;
- arch_register_req_type_t type = req->type;
-
- /* If there is no special requirement, we allow current class here */
- if (cls == NULL && req->type == arch_register_req_type_none) {
- cls = env->cls;
- type = arch_register_req_type_normal;
- }
-
- assert(cls == env->cls);
-
- op->regs = bitset_obstack_alloc(obst, env->cls->n_regs);
-
- if (type & arch_register_req_type_limited) {
- rbitset_copy_to_bitset(req->limited, op->regs);
- } else {
- arch_put_non_ignore_regs(arch_env, env->cls, op->regs);
- if (env->ignore_colors)
- bitset_andnot(op->regs, env->ignore_colors);
- }
- }