}
  }
}

// Creates a smaller launch op on `device` from `original_launch_op` where some
// ops have been removed from `old_block`.
void CreateReducedLaunchOp(OpBuilder* builder, Block* old_block,
                           tf_device::LaunchOp original_launch_op,
                           llvm::StringRef device) {
  Block* reduced_launch_block = new Block;