{"ast_node_type":"other","tokens":[{"end":57,"kind":"keyword","start":0,"text":"Rvalue::Use(Operand::Constant(constant))"}]}
            Rvalue::Use(Operand::Constant(constant)) => {
            Rvalue::NullaryOp(NullOp::UbChecks, _) => Some((tcx.sess.ub_checks() as u128, targets)),
                let bits = eval_mono_const(constant)?;