lpp_set_factor_fast(si->lpp, cst, to_copy_spill->reg_out, -1.0);
if(reload != ILP_UNDEF) lpp_set_factor_fast(si->lpp, cst, reload, -1.0);
lpp_set_factor_fast(si->lpp, cst, to_copy_op->attr.live_range.ilp, -1.0);
lpp_set_factor_fast(si->lpp, cst, to_copy_spill->reg_out, -1.0);
if(reload != ILP_UNDEF) lpp_set_factor_fast(si->lpp, cst, reload, -1.0);
lpp_set_factor_fast(si->lpp, cst, to_copy_op->attr.live_range.ilp, -1.0);