[flang-commits] [flang] [Flang][OpenMP] Fix nested PARALLEL SECTIONS validation (PR #179419)

[Krzysztof Parzyszek via flang-commits]

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@@ -633,11 +633,31 @@ void OmpStructureChecker::CheckMultListItems() {
     CheckMultipleOccurrence(listVars, nameList, clause->source, "LINEAR");
   }
 }
+bool OmpStructureChecker::IsCombinedParallelWorksharing(
+    llvm::omp::Directive directive) const {
+  // Combined parallel-worksharing constructs create their own parallel region
+  // They should not be subject to worksharing nesting restrictions
+  switch (directive) {
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kparzysz wrote:

All the cases below that have the same return could be grouped together, i.e.
```
case OMPD_parallel_do:
case OMPD_parallel_do_simd:
case ...
  return true;
default:
  return false;
```

https://github.com/llvm/llvm-project/pull/179419