[Preprocessor] Pass TranslationUnitKind to the preprocessor and if it is TU_Prefix

avoid warning for unused macros.

rdar://15034698

llvm-svn: 203213

1 files changed, 5 insertions, 2 deletions

diff --git a/clang/lib/Frontend/CompilerInstance.cpp b/clang/lib/Frontend/CompilerInstance.cpp
index f10311a4ea3..be1a5402683 100644
--- a/clang/lib/Frontend/CompilerInstance.cpp
+++ b/clang/lib/Frontend/CompilerInstance.cpp
@@ -223,7 +223,7 @@ void CompilerInstance::createSourceManager(FileManager &FileMgr) {
 
 // Preprocessor
 
-void CompilerInstance::createPreprocessor() {
+void CompilerInstance::createPreprocessor(TranslationUnitKind TUKind) {
   const PreprocessorOptions &PPOpts = getPreprocessorOpts();
 
   // Create a PTH manager if we are using some form of a token cache.
@@ -240,7 +240,10 @@ void CompilerInstance::createPreprocessor() {
   PP = new Preprocessor(&getPreprocessorOpts(),
                         getDiagnostics(), getLangOpts(), &getTarget(),
                         getSourceManager(), *HeaderInfo, *this, PTHMgr,
-                        /*OwnsHeaderSearch=*/true);
+                        /*OwnsHeaderSearch=*/true,
+                        /*DelayInitialization=*/false,
+                        /*IncrProcessing=*/false,
+                        TUKind);
 
   // Note that this is different then passing PTHMgr to Preprocessor's ctor.
   // That argument is used as the IdentifierInfoLookup argument to