Some preparatory work for chained PCH. No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107915 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 0 deletions

diff --git a/include/clang/Frontend/CompilerInstance.h b/include/clang/Frontend/CompilerInstance.h
index 06dc8004a6..54ce8bfe3b 100644
--- a/include/clang/Frontend/CompilerInstance.h
+++ b/include/clang/Frontend/CompilerInstance.h
@@ -34,6 +34,7 @@ class DiagnosticClient;
 class ExternalASTSource;
 class FileManager;
 class FrontendAction;
+class PCHReader;
 class Preprocessor;
 class SourceManager;
 class TargetInfo;
@@ -96,6 +97,9 @@ class CompilerInstance {
   /// The list of active output files.
   std::list< std::pair<std::string, llvm::raw_ostream*> > OutputFiles;
 
+  /// The PCH reader. Not owned; the ASTContext owns this.
+  PCHReader *Reader;
+
   void operator=(const CompilerInstance &);  // DO NOT IMPLEMENT
   CompilerInstance(const CompilerInstance&); // DO NOT IMPLEMENT
 public:
@@ -507,6 +511,9 @@ public:
   createPCHExternalASTSource(llvm::StringRef Path, const std::string &Sysroot,
                              Preprocessor &PP, ASTContext &Context);
 
+  /// Get the PCH reader, if any.
+  PCHReader *getPCHReader() { return Reader; }
+
   /// Create a code completion consumer using the invocation; note that this
   /// will cause the source manager to truncate the input source file at the
   /// completion point.