op->erase();
    // Control token is last result of outer_op.
    control_tokens.assign(1, outer_op.getResults().back());
  }
}
}  // namespace

std::unique_ptr<OperationPass<func::FuncOp>> CreatePinOpsWithSideEffectsPass() {
  return std::make_unique<PinOpsWithSideEffectsPass>();
}

static PassRegistration<PinOpsWithSideEffectsPass> pass;

}  // namespace TFL

// Creates a pass that adds control dependencies to keep the relative execution
// order of operations with side effects frozen.
std::unique_ptr<OperationPass<func::FuncOp>> CreatePinOpsWithSideEffectsPass();

// Legalize TensorList Ops iff all of them are supported.
std::unique_ptr<OperationPass<ModuleOp>> CreateLegalizeTensorListPass();

        - it calls a different function
        - it depends on or generates resource variable handles
  }];
  let constructor = "CreatePinOpsWithSideEffectsPass()";
  let dependentDialects = ["TFL::TensorFlowLiteDialect"];
}

def PostQuantizePass : Pass<"tfl-post-quantize", "mlir::func::FuncOp"> {