{"ast_node_type":"variable","tokens":[{"end":99,"kind":"keyword","start":0,"text":"let"}]}
                let rhs = base::build_shift_expr_rhs(bx, lhs, rhs, op == mir::BinOp::ShlUnchecked);
            mir::BinOp::Shl | mir::BinOp::ShlUnchecked => {
                bx.shl(lhs, rhs)