@sbuild.parse
def mn_cmp_signed(arg1, arg2, arg3):
    crf_dict[arg1]['LT'] = expr.ExprOp(expr.TOK_INF_SIGNED, arg2, arg3)
    crf_dict[arg1]['GT'] = expr.ExprOp(expr.TOK_INF_SIGNED, arg3, arg2)
    crf_dict[arg1]['EQ'] = expr.ExprOp(expr.TOK_EQUAL, arg2, arg3)