Log EValue tag names instead of numeric values

Summary:
Update error log messages that include EValue tags to use a string representation of the tag rather than the numerical index. This improves readability for users.

Example Old Message:
```
[method.cpp:814] The 0-th input of method should have the same type as the input_evalue, but get tag 1 and tag 4
```

Example New Message:
```
[method.cpp:813] Input 0 was expected to be Tensor but was Int.
```

Differential Revision: D67888756

runtime/core/evalue.cpp

@@ -27,5 +27,15 @@ BoxedEvalueList<exec_aten::optional<exec_aten::Tensor>>::get() const {
   return exec_aten::ArrayRef<exec_aten::optional<exec_aten::Tensor>>{
       unwrapped_vals_, wrapped_vals_.size()};
 }
+
+const char* tag_to_string(Tag tag) {
+  switch (tag) {
+#define TAG_CASE(x) case Tag::x: return #x;
+  EXECUTORCH_FORALL_TAGS(TAG_CASE)
+#undef TAG_CASE
+    default: return "";
+  }
+}
+
 } // namespace runtime
 } // namespace executorch

runtime/core/evalue.h

@@ -550,6 +550,8 @@ executorch::aten::ArrayRef<T> BoxedEvalueList<T>::get() const {
   return executorch::aten::ArrayRef<T>{unwrapped_vals_, wrapped_vals_.size()};
 }
 
+const char* tag_to_string(Tag tag);
+
 } // namespace runtime
 } // namespace executorch
 

runtime/executor/method.cpp

@@ -792,26 +792,25 @@ Method::set_input(const EValue& input_evalue, size_t input_idx) {
   ET_CHECK_OR_RETURN_ERROR(
       input_idx < inputs_size(),
       InvalidArgument,
-      "Given input index must be less than the number of inputs in method, but got %zu and %zu",
+      "Input index (%zu) must be less than the number of inputs in method (%zu).",
       input_idx,
       inputs_size());
 
   const auto& e = get_value(get_input_index(input_idx));
   ET_CHECK_OR_RETURN_ERROR(
       e.isTensor() || e.isScalar(),
       InvalidArgument,
-      "The %zu-th input in method is expected Tensor or prim, but received %" PRIu32,
+      "Input %zu was expected to be a Tensor or primitive but was %s.",
       input_idx,
-      static_cast<uint32_t>(e.tag));
+      tag_to_string(e.tag));
 
   ET_CHECK_OR_RETURN_ERROR(
       e.tag == input_evalue.tag,
       InvalidArgument,
-      "The %zu-th input of method should have the same type as the input_evalue, but get tag %" PRIu32
-      " and tag %" PRIu32,
+      "Input %zu was expected to be %s but was %s.",
       input_idx,
-      static_cast<uint32_t>(e.tag),
-      static_cast<uint32_t>(input_evalue.tag));
+      tag_to_string(e.tag),
+      tag_to_string(input_evalue.tag));
 
   if (e.isTensor()) {
     const auto& t_dst = e.toTensor();
@@ -901,7 +900,7 @@ Method::set_input(const EValue& input_evalue, size_t input_idx) {
         e.toString().data(),
         input_evalue.toString().data());
   } else {
-    ET_LOG(Error, "Unsupported input type: %d", (int32_t)e.tag);
+    ET_LOG(Error, "Unsupported input type: %s", tag_to_string(e.tag));
     return Error::InvalidArgument;
   }
   return Error::Ok;
@@ -956,8 +955,8 @@ Method::set_output_data_ptr(void* buffer, size_t size, size_t output_idx) {
   ET_CHECK_OR_RETURN_ERROR(
       output.isTensor(),
       InvalidArgument,
-      "output type: %zu is not tensor",
-      (size_t)output.tag);
+      "output type: %s is not tensor",
+      tag_to_string(output.tag));
 
   auto tensor_meta = this->method_meta().output_tensor_meta(output_idx);
   if (tensor_meta->is_memory_planned()) {
@@ -973,8 +972,8 @@ Method::set_output_data_ptr(void* buffer, size_t size, size_t output_idx) {
   ET_CHECK_OR_RETURN_ERROR(
       output.isTensor(),
       InvalidArgument,
-      "output type: %zu is not tensor",
-      (size_t)output.tag);
+      "output type: %s is not tensor",
+      tag_to_string(output.tag));
   ET_CHECK_OR_RETURN_ERROR(
       t.nbytes() <= size,
       InvalidArgument,