[clang] NFCI: Use FileEntryRef in ModuleMap

clang/include/clang/Lex/ModuleMap.h

@@ -194,7 +194,7 @@ public:
     }
   };
 
-  using AdditionalModMapsSet = llvm::SmallPtrSet<const FileEntry *, 1>;
+  using AdditionalModMapsSet = llvm::SmallPtrSet<FileEntryRef, 1>;
 
 private:
   friend class ModuleMapParser;
@@ -653,7 +653,7 @@ public:
     return &I->second;
   }
 
-  void addAdditionalModuleMapFile(const Module *M, const FileEntry *ModuleMap);
+  void addAdditionalModuleMapFile(const Module *M, FileEntryRef ModuleMap);
 
   /// Resolve all of the unresolved exports in the given module.
   ///

clang/lib/Lex/ModuleMap.cpp

@@ -1339,7 +1339,7 @@ ModuleMap::canonicalizeModuleMapPath(SmallVectorImpl<char> &Path) {
 }
 
 void ModuleMap::addAdditionalModuleMapFile(const Module *M,
-                                           const FileEntry *ModuleMap) {
+                                           FileEntryRef ModuleMap) {
   AdditionalModMaps[M].insert(ModuleMap);
 }
 

clang/lib/Serialization/ASTReader.cpp

@@ -4096,13 +4096,13 @@ ASTReader::ReadModuleMapFileBlock(RecordData &Record, ModuleFile &F,
     // Check any additional module map files (e.g. module.private.modulemap)
     // that are not in the pcm.
     if (auto *AdditionalModuleMaps = Map.getAdditionalModuleMapFiles(M)) {
-      for (const FileEntry *ModMap : *AdditionalModuleMaps) {
+      for (FileEntryRef ModMap : *AdditionalModuleMaps) {
         // Remove files that match
         // Note: SmallPtrSet::erase is really remove
         if (!AdditionalStoredMaps.erase(ModMap)) {
           if (!canRecoverFromOutOfDate(F.FileName, ClientLoadCapabilities))
             Diag(diag::err_module_different_modmap)
-              << F.ModuleName << /*new*/0 << ModMap->getName();
+              << F.ModuleName << /*new*/0 << ModMap.getName();
           return OutOfDate;
         }
       }