[Frontend][OpenMP] Move isPrivatizingClause to OMP.h, NFC (#148644)

Author: kparzysz

llvm/include/llvm/Frontend/OpenMP/ConstructDecompositionT.h

@@ -795,25 +795,9 @@ bool ConstructDecompositionT<C, H>::applyClause(
   // assigned to which leaf constructs.
 
   // [5.2:340:33]
-  auto canMakePrivateCopy = [](llvm::omp::Clause id) {
-    switch (id) {
-    // Clauses with "privatization" property:
-    case llvm::omp::Clause::OMPC_firstprivate:
-    case llvm::omp::Clause::OMPC_in_reduction:
-    case llvm::omp::Clause::OMPC_lastprivate:
-    case llvm::omp::Clause::OMPC_linear:
-    case llvm::omp::Clause::OMPC_private:
-    case llvm::omp::Clause::OMPC_reduction:
-    case llvm::omp::Clause::OMPC_task_reduction:
-      return true;
-    default:
-      return false;
-    }
-  };
-
   bool applied = applyIf(node, [&](const auto &leaf) {
     return llvm::any_of(leaf.clauses, [&](const ClauseTy *n) {
-      return canMakePrivateCopy(n->id);
+      return llvm::omp::isPrivatizingClause(n->id);
     });
   });
 

llvm/include/llvm/Frontend/OpenMP/OMP.h

@@ -48,6 +48,22 @@ static constexpr inline bool canHaveIterator(Clause C) {
   }
 }
 
+// Can clause C create a private copy of a variable.
+static constexpr inline bool isPrivatizingClause(Clause C) {
+  switch (C) {
+  case OMPC_firstprivate:
+  case OMPC_in_reduction:
+  case OMPC_lastprivate:
+  case OMPC_linear:
+  case OMPC_private:
+  case OMPC_reduction:
+  case OMPC_task_reduction:
+    return true;
+  default:
+    return false;
+  }
+}
+
 static constexpr unsigned FallbackVersion = 52;
 LLVM_ABI ArrayRef<unsigned> getOpenMPVersions();