3 files changed, 27 insertions, 1 deletions
diff --git a/tools/libclang/Indexing.cpp b/tools/libclang/Indexing.cpp
index 6cf3a637ac..0b12d82d30 100644
--- a/tools/libclang/Indexing.cpp
+++ b/tools/libclang/Indexing.cpp
@@ -197,13 +197,20 @@ public:
 
   virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
                                          StringRef InFile) {
+    PreprocessorOptions &PPOpts = CI.getPreprocessorOpts();
+
     // We usually disable the preprocessing record for indexing even if the
     // original preprocessing options had it enabled. Now that the indexing
     // Preprocessor has been created (without a preprocessing record), re-enable
     // the option in case modules are enabled, so that the detailed record
     // option can be propagated when the module file is generated.
     if (CI.getLangOpts().Modules && EnablePPDetailedRecordForModules)
-      CI.getPreprocessorOpts().DetailedRecord = true;
+      PPOpts.DetailedRecord = true;
+
+    if (!PPOpts.ImplicitPCHInclude.empty()) {
+      IndexCtx.importedPCH(
+                        CI.getFileManager().getFile(PPOpts.ImplicitPCHInclude));
+    }
 
     IndexCtx.setASTContext(CI.getASTContext());
     Preprocessor &PP = CI.getPreprocessor();
@@ -536,6 +543,9 @@ static void clang_indexTranslationUnit_Impl(void *UserData) {
 
   ASTUnit::ConcurrencyCheck Check(*Unit);
 
+  if (const FileEntry *PCHFile = Unit->getPCHFile())
+    IndexCtx->importedPCH(PCHFile);
+
   FileManager &FileMgr = Unit->getFileManager();
 
   if (Unit->getOriginalSourceFileName().empty())
diff --git a/tools/libclang/IndexingContext.cpp b/tools/libclang/IndexingContext.cpp
index c964e963c7..1186191cc3 100644
--- a/tools/libclang/IndexingContext.cpp
+++ b/tools/libclang/IndexingContext.cpp
@@ -273,6 +273,21 @@ void IndexingContext::importedModule(const ImportDecl *ImportD) {
   (void)astFile;
 }
 
+void IndexingContext::importedPCH(const FileEntry *File) {
+  if (!CB.importedASTFile)
+    return;
+
+  CXIdxImportedASTFileInfo Info = {
+                                    (CXFile)File,
+                                    getIndexLoc(SourceLocation()),
+                                    /*isModule=*/false,
+                                    /*isImplicit=*/false,
+                                    /*moduleName=*/NULL
+                                  };
+  CXIdxClientASTFile astFile = CB.importedASTFile(ClientData, &Info);
+  (void)astFile;
+}
+
 void IndexingContext::startedTranslationUnit() {
   CXIdxClientContainer idxCont = 0;
   if (CB.startedTranslationUnit)
diff --git a/tools/libclang/IndexingContext.h b/tools/libclang/IndexingContext.h
index e556d4dd5f..e92894ae66 100644
--- a/tools/libclang/IndexingContext.h
+++ b/tools/libclang/IndexingContext.h
@@ -383,6 +383,7 @@ public:
                       bool isImport, bool isAngled);
 
   void importedModule(const ImportDecl *ImportD);
+  void importedPCH(const FileEntry *File);
 
   void startedTranslationUnit();