1 files changed, 13 insertions, 0 deletions

diff --git a/contrib/llvm-project/clang/lib/Sema/SemaModule.cpp b/contrib/llvm-project/clang/lib/Sema/SemaModule.cpp
index 3aa124d457b0..e9a1ac17ce86 100644
--- a/contrib/llvm-project/clang/lib/Sema/SemaModule.cpp
+++ b/contrib/llvm-project/clang/lib/Sema/SemaModule.cpp
@@ -935,3 +935,16 @@ void Sema::PopGlobalModuleFragment() {
          "left the wrong module scope, which is not global module fragment");
   ModuleScopes.pop_back();
 }
+
+bool Sema::isModuleUnitOfCurrentTU(const Module *M) const {
+  assert(M);
+
+  Module *CurrentModuleUnit = getCurrentModule();
+
+  // If we are not in a module currently, M must not be the module unit of
+  // current TU.
+  if (!CurrentModuleUnit)
+    return false;
+
+  return M->isSubModuleOf(CurrentModuleUnit->getTopLevelModule());
+}