[flang-commits] [flang] [flang][OpenMP] move omp end directive validation to semantics (PR #154739)

[Krzysztof Parzyszek via flang-commits]

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@@ -4783,15 +4783,25 @@ struct OmpEndDirective : public OmpDirectiveSpecification {
 // Common base class for block-associated constructs.
 struct OmpBlockConstruct {
   TUPLE_CLASS_BOILERPLATE(OmpBlockConstruct);
+  ENUM_CLASS(Flags, None, MissingMandatoryEndDirective);
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kparzysz wrote:

Do we need a flag for this?  All loosely-structured blocks need it, and it's easy to tell whether a block is strictly- or loosely-structured (single BLOCK vs. sequence that doesn't start with BLOCK).  I think we could simply have an optional end-directive in this case as well without the flag, and check the type of block in semantics.

https://github.com/llvm/llvm-project/pull/154739