1 files changed, 34 insertions, 0 deletions
diff --git a/llvm/lib/Frontend/OpenMP/OMP.cpp b/llvm/lib/Frontend/OpenMP/OMP.cpp
index 9e625b809de9..f12941492547 100644
--- a/llvm/lib/Frontend/OpenMP/OMP.cpp
+++ b/llvm/lib/Frontend/OpenMP/OMP.cpp
@@ -9,6 +9,8 @@
 #include "llvm/Frontend/OpenMP/OMP.h"
 
 #include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/Sequence.h"
+#include "llvm/ADT/SmallSet.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Demangle/Demangle.h"
@@ -75,6 +77,26 @@ getFirstCompositeRange(iterator_range<ArrayRef<Directive>::iterator> Leafs) {
   return llvm::make_range(Begin, End);
 }
 
+static void
+collectPrivatizingConstructs(llvm::SmallSet<Directive, 16> &Constructs,
+                             unsigned Version) {
+  llvm::SmallSet<Clause, 16> Privatizing;
+  for (auto C :
+       llvm::enum_seq_inclusive<Clause>(Clause::First_, Clause::Last_)) {
+    if (isPrivatizingClause(C))
+      Privatizing.insert(C);
+  }
+
+  for (auto D : llvm::enum_seq_inclusive<Directive>(Directive::First_,
+                                                    Directive::Last_)) {
+    bool AllowsPrivatizing = llvm::any_of(Privatizing, [&](Clause C) {
+      return isAllowedClauseForDirective(D, C, Version);
+    });
+    if (AllowsPrivatizing)
+      Constructs.insert(D);
+  }
+}
+
 namespace llvm::omp {
 ArrayRef<Directive> getLeafConstructs(Directive D) {
   auto Idx = static_cast<std::size_t>(D);
@@ -194,6 +216,18 @@ ArrayRef<unsigned> getOpenMPVersions() {
   return Versions;
 }
 
+bool isPrivatizingConstruct(Directive D, unsigned Version) {
+  static llvm::SmallSet<Directive, 16> Privatizing;
+  [[maybe_unused]] static bool Init =
+      (collectPrivatizingConstructs(Privatizing, Version), true);
+
+  // As of OpenMP 6.0, privatizing constructs (with the test being if they
+  // allow a privatizing clause) are: dispatch, distribute, do, for, loop,
+  // parallel, scope, sections, simd, single, target, target_data, task,
+  // taskgroup, taskloop, and teams.
+  return llvm::is_contained(Privatizing, D);
+}
+
 std::string prettifyFunctionName(StringRef FunctionName) {
   // Internalized functions have the right name, but simply a suffix.
   if (FunctionName.ends_with(".internalized"))