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

[Sergio Afonso via llvm-branch-commits]

================
@@ -8,12 +8,74 @@
 
 #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<int>(D);
+  if (Idx < 0 || Idx >= static_cast<int>(Directive_enumSize))
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skatrak wrote:

Nit: `Directive_enumSize` seems to be of `std::size_t` type, so maybe this can be simplified a bit:
```suggestion
  auto Idx = static_cast<std::size_t>(D);
  if (Idx >= Directive_enumSize)
```

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