template <typename ClusterOrLaunchOp>
func::FuncOp BuildFunction(llvm::ArrayRef<Value> live_ins, ClusterOrLaunchOp op,
                           SymbolTable* symbol_table, OpBuilder* builder) {
  llvm::SmallVector<Type, 4> operand_types;
  operand_types.reserve(live_ins.size());
  for (Value v : live_ins) operand_types.emplace_back(v.getType());

  auto func_type = builder->getFunctionType(operand_types, op.getResultTypes());

      continue;
    }
    // Gets the live in values of the `op`
    llvm::SetVector<Value> live_ins(op.operand_begin(), op.operand_end());
    getUsedValuesDefinedAbove(op.getRegions(), live_ins);
    // Inserts if any of the `live_ins` depends on the ops in the cluster.
    if (llvm::any_of(live_ins, [&](Value value) {
          Operation* defining_op = value.getDefiningOp();
          if (!defining_op) {