{"ast_node_type":"variable","tokens":[{"end":64,"kind":"keyword","start":0,"text":"let"}]}
                    let packed = bx.const_usize(packed.bytes());
                    // We have to dynamically compute `min(unsized_align, packed)`.
                    let cmp = bx.icmp(IntPredicate::IntULT, unsized_align, packed);