[flang-commits] [flang] [flang][OpenACC] Relax COMMON block usage restriction in OpenACC directives (PR #162659)

[Eugene Epshteyn via flang-commits]

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@@ -283,6 +305,7 @@ class Scope {
   std::list<Scope> children_;
   mapType symbols_;
   mapType commonBlocks_;
+  mapType commonBlockUses_; // USE-assocated COMMON blocks
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eugeneepshteyn wrote:

Having the data member makes it more convenient and avoid disturbing the code that assumes that `commonBlocks_` only contain symbols with `CommonBlockDetails`. The previous iteration of this PR had guards around various places to ignore `UseDetails` and that seemed inelegant.

https://github.com/llvm/llvm-project/pull/162659