[Mlir-commits] [mlir] [mlir][sparse] external entry method wrapper for sparse tensors (PR #80326)

[Peiming Liu]

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@@ -0,0 +1,236 @@
+//===- SparseAssembler.cpp - adds wrapper method around sparse types ------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "Utils/CodegenUtils.h"
+
+#include "mlir/Dialect/SparseTensor/IR/SparseTensor.h"
+#include "mlir/Dialect/SparseTensor/IR/SparseTensorStorageLayout.h"
+#include "mlir/Dialect/SparseTensor/IR/SparseTensorType.h"
+#include "mlir/Dialect/SparseTensor/Transforms/Passes.h"
+#include "mlir/Dialect/Tensor/IR/Tensor.h"
+#include "llvm/Support/FormatVariadic.h"
+
+using namespace mlir;
+using namespace sparse_tensor;
+
+//===----------------------------------------------------------------------===//
+// Helper methods.
+//===----------------------------------------------------------------------===//
+
+// Convert type range to new types range, with sparse tensors externalized.
+void convTypes(TypeRange types, SmallVectorImpl<Type> &convTypes,
+               SmallVectorImpl<Type> *extraTypes = nullptr) {
+  for (auto type : types) {
+    if (auto rtp = dyn_cast<RankedTensorType>(type)) {
+      const SparseTensorType stt(rtp);
+      if (stt.hasEncoding()) {
+        auto shape = {ShapedType::kDynamic};
+        // Convert the external representation of the values array.
+        auto vtp = RankedTensorType::get(shape, stt.getElementType());
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PeimingLiu wrote:

This seems to be duplicated with `sparse_tensor::StorageLayout`?

https://github.com/llvm/llvm-project/pull/80326