areusch commented on a change in pull request #5417:
URL: https://github.com/apache/incubator-tvm/pull/5417#discussion_r415988618



##########
File path: src/runtime/micro/micro_common.h
##########
@@ -52,28 +53,115 @@ enum class SectionKind : size_t {
   kNumKinds,
 };
 
-/*! \brief union for storing values on varying target word sizes */
-union TargetVal {
-  /*! \brief 32-bit pointer */
-  uint32_t val32;
-  /*! \brief 64-bit pointer */
-  uint64_t val64;
+/*! \brief data type for word sizes */
+class TargetWordSize {
+ private:
+  size_t word_size_bits_;

Review comment:
       done




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