1 files changed, 10 insertions, 0 deletions
diff --git a/clang/lib/Lex/HeaderSearch.cpp b/clang/lib/Lex/HeaderSearch.cpp
index 0ba76327421..36826756b8b 100644
--- a/clang/lib/Lex/HeaderSearch.cpp
+++ b/clang/lib/Lex/HeaderSearch.cpp
@@ -98,6 +98,16 @@ const HeaderMap *HeaderSearch::CreateHeaderMap(const FileEntry *FE) {
   return 0;
 }
 
+const FileEntry *HeaderSearch::lookupModule(StringRef ModuleName) {
+  // If we don't have a module cache path, we can't do anything.
+  if (ModuleCachePath.empty())
+    return 0;
+  
+  llvm::SmallString<256> FileName(ModuleCachePath);
+  llvm::sys::path::append(FileName, ModuleName + ".pcm");
+  return getFileMgr().getFile(FileName);
+}
+
 //===----------------------------------------------------------------------===//
 // File lookup within a DirectoryLookup scope
 //===----------------------------------------------------------------------===//