c->use_pad_return = FLAGS(opt_arch, arch_athlon_plus | arch_core2 | arch_generic32) && !opt_size;
c->use_bt = FLAGS(opt_arch, arch_core2 | arch_athlon_plus) || opt_size;
c->use_fisttp = FLAGS(opt_arch & arch, arch_feature_sse3);
c->use_pad_return = FLAGS(opt_arch, arch_athlon_plus | arch_core2 | arch_generic32) && !opt_size;
c->use_bt = FLAGS(opt_arch, arch_core2 | arch_athlon_plus) || opt_size;
c->use_fisttp = FLAGS(opt_arch & arch, arch_feature_sse3);