Update on "[executorch] Create target for named_data_map"

^

Differential Revision: [D68972364](https://our.internmc.facebook.com/intern/diff/D68972364/)

[ghstack-poisoned]

Author: lucylq

runtime/core/tensor_layout.h

@@ -77,16 +77,16 @@ class ET_EXPERIMENTAL TensorLayout final {
         scalar_type_(scalar_type),
         nbytes_(nbytes) {}
   /// The sizes of the tensor.
-  Span<const int32_t> sizes_;
+  const Span<const int32_t> sizes_;
 
   /// The dim order of the tensor.
-  Span<const uint8_t> dim_order_;
+  const Span<const uint8_t> dim_order_;
 
   /// The scalar type of the tensor.
-  executorch::aten::ScalarType scalar_type_;
+  const executorch::aten::ScalarType scalar_type_;
 
   /// The size in bytes of the tensor.
-  size_t nbytes_;
+  const size_t nbytes_;
 };
 
 } // namespace runtime

runtime/core/test/tensor_layout_test.cpp

@@ -26,7 +26,7 @@ TEST(TestTensorLayout, Ctor) {
   Span<const int32_t> sizes_span = {sizes.data(), sizes.size()};
   Span<const uint8_t> dim_order_span = {dim_order.data(), dim_order.size()};
 
-  Result<TensorLayout> layout_res =
+  Result<const TensorLayout> layout_res =
       TensorLayout::create(sizes_span, dim_order_span, ScalarType::Float);
   EXPECT_TRUE(layout_res.ok());
 
@@ -50,7 +50,7 @@ TEST(TestTensorLayout, Ctor_InvalidDimOrder) {
   Span<const int32_t> sizes_span = {sizes.data(), sizes.size()};
   Span<const uint8_t> dim_order_span = {dim_order.data(), dim_order.size()};
 
-  Result<TensorLayout> layout_res =
+  Result<const TensorLayout> layout_res =
       TensorLayout::create(sizes_span, dim_order_span, ScalarType::Float);
   EXPECT_EQ(layout_res.error(), Error::InvalidArgument);
 }
@@ -61,7 +61,7 @@ TEST(TestTensorLayout, Ctor_InvalidSizes) {
   Span<const int32_t> sizes_span = {sizes.data(), sizes.size()};
   Span<const uint8_t> dim_order_span = {dim_order.data(), dim_order.size()};
 
-  Result<TensorLayout> layout_res =
+  Result<const TensorLayout> layout_res =
       TensorLayout::create(sizes_span, dim_order_span, ScalarType::Float);
   EXPECT_EQ(layout_res.error(), Error::InvalidArgument);
 }
@@ -72,7 +72,7 @@ TEST(TestTensorLayout, Ctor_SizesDimOrderMismatch) {
   Span<const int32_t> sizes_span = {sizes.data(), sizes.size()};
   Span<const uint8_t> dim_order_span = {dim_order.data(), dim_order.size()};
 
-  Result<TensorLayout> layout_res =
+  Result<const TensorLayout> layout_res =
       TensorLayout::create(sizes_span, dim_order_span, ScalarType::Float);
   EXPECT_EQ(layout_res.error(), Error::InvalidArgument);
 }