[GitHub] [incubator-tvm] lixiaoquan commented on a change in pull request #6892: [Relay] Add dynamic SparseToDense

[GitBox <gi...@apache.org>]

lixiaoquan commented on a change in pull request #6892:
URL: https://github.com/apache/incubator-tvm/pull/6892#discussion_r521123874



##########
File path: src/relay/op/dyn/tensor/transform.cc
##########
@@ -556,6 +556,77 @@ Examples::
     .set_attr<TOpPattern>("TOpPattern", kInjective)
     .set_attr<AnyCodegenStrategy>("AnyCodegenStrategy", kVariableDimensions);
 
+bool SparseToDenseRel(const Array<Type>& types, int num_inputs, const Attrs& attrs,
+                      const TypeReporter& reporter) {
+  ICHECK_EQ(num_inputs, 4);
+  auto sparse_indices = types[0].as<TensorTypeNode>();
+  auto sparse_values = types[1].as<TensorTypeNode>();
+  auto default_value = types[2].as<TensorTypeNode>();
+  auto output_shape = types[3].as<TensorTypeNode>();
+
+  if (sparse_indices == nullptr || sparse_values == nullptr || default_value == nullptr ||
+      output_shape == nullptr) {
+    return false;
+  }
+
+  ICHECK(sparse_indices->dtype.is_int()) << "sparse_indices must be tensor of integers";
+
+  ICHECK_LE(sparse_indices->shape.size(), 3)

Review comment:
       Fixed




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