This patch fixes: mlir/lib/Dialect/Mesh/Transforms/ShardingPropagation.cpp:73:27: error: unused function 'operator<<' [-Werror,-Wunused-function] mlir/lib/Dialect/Mesh/Transforms/ShardingPropagation.cpp:97:27: error: unused function 'operator<<' [-Werror,-Wunused-function]