{"ast_node_type":"variable","tokens":[{"end":62,"kind":"keyword","start":0,"text":"let"}]}
                    let tmp = PlaceRef::alloca(bx, op.layout);
                | (&mir::Operand::Constant(_), Ref(PlaceValue { llextra: None, .. })) => {
                    bx.lifetime_start(tmp.val.llval, tmp.layout.size);