// Test pass for applying TF->TF lowering patterns.
std::unique_ptr<OperationPass<func::FuncOp>> CreateTestTFLowerTFPass();

// Test passes for visitor util.
std::unique_ptr<OperationPass<func::FuncOp>> CreateTestVisitorUtilPass();
std::unique_ptr<OperationPass<func::FuncOp>>
CreateTestVisitorUtilInterruptPass();

// Test operation clustering based on user defined policy.