{"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"bx.lifetime_start(tmp.val.llval,"}]}
                    bx.lifetime_start(tmp.val.llval, tmp.layout.size);
                    let tmp = PlaceRef::alloca(bx, op.layout);
                    op.val.store(bx, tmp);