[flang-commits] [flang] [flang] Represent use statement in fir. (PR #168106)

[Kareem Ergawy via flang-commits]

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@@ -55,6 +55,19 @@ struct EquivalenceObject {
 };
 using EquivalenceSet = std::vector<EquivalenceObject>;
 
+// Preserved USE statement information for debug info generation.
+struct PreservedUseStmt {
+  enum class Kind { UseOnly, UseRenames, UseAll };
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ergawy wrote:

I am wondering if we need that enum. `UseOnly` and `UseRenames` are not mutually exclusive. And `UseAll` can be deduced if `onlyNames` is not empty. Also, I don't think we need to keep track of `UseAll` since during lowering, we do nothing with it.
```suggestion
```

https://github.com/llvm/llvm-project/pull/168106