[flang-commits] [flang] [llvm] [mlir] [Frontend][OpenMP] Refactor getLeafConstructs, add getCompoundConstruct (PR #87247)

[Alexey Bataev via flang-commits]

================
@@ -8,12 +8,80 @@
 
 #include "llvm/Frontend/OpenMP/OMP.h"
 
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/StringSwitch.h"
 #include "llvm/Support/ErrorHandling.h"
 
+#include <algorithm>
+#include <iterator>
+#include <type_traits>
+
 using namespace llvm;
-using namespace omp;
+using namespace llvm::omp;
 
 #define GEN_DIRECTIVES_IMPL
 #include "llvm/Frontend/OpenMP/OMP.inc"
+
+namespace llvm::omp {
+ArrayRef<Directive> getLeafConstructs(Directive D) {
+  auto Idx = static_cast<std::size_t>(D);
+  if (Idx >= Directive_enumSize)
+    return {};
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alexey-bataev wrote:

```suggestion
    return std::nullopt;
```

https://github.com/llvm/llvm-project/pull/87247