// Gemm Style Op: glossary/gemm.
template <typename GemmStyleOp>
// Match for all gemm_style op and check for possible fusions.
LogicalResult MatchGemmStyleOp(func::FuncOp entry_func_op) {
  const auto op_iterator_range = entry_func_op.getOps<GemmStyleOp>();
  if (op_iterator_range.empty()) {
    LLVM_DEBUG(llvm::dbgs() << "Function does not have "
                            << GemmStyleOp::getOperationName() << " op.\n");
    return failure();