Use the ASTMutationListener to track added template specializations in a chained PCH.

llvm-svn: 117533

1 files changed, 10 insertions, 19 deletions

diff --git a/clang/lib/Serialization/ASTWriter.cpp b/clang/lib/Serialization/ASTWriter.cpp
index 340f0cc5593..3589b9bd990 100644
--- a/clang/lib/Serialization/ASTWriter.cpp
+++ b/clang/lib/Serialization/ASTWriter.cpp
@@ -2181,21 +2181,6 @@ void ASTWriter::WriteDeclContextVisibleUpdate(const DeclContext *DC) {
   Stream.EmitRecordWithBlob(UpdateVisibleAbbrev, Record, LookupTable.str());
 }
 
-/// \brief Write ADDITIONAL_TEMPLATE_SPECIALIZATIONS blocks for all templates
-/// that have new specializations in the current AST file.
-void ASTWriter::WriteAdditionalTemplateSpecializations() {
-  RecordData Record;
-  for (AdditionalTemplateSpecializationsMap::iterator
-           I = AdditionalTemplateSpecializations.begin(),
-           E = AdditionalTemplateSpecializations.end();
-       I != E; ++I) {
-    Record.clear();
-    Record.push_back(I->first);
-    Record.insert(Record.end(), I->second.begin(), I->second.end());
-    Stream.EmitRecord(ADDITIONAL_TEMPLATE_SPECIALIZATIONS, Record);
-  }
-}
-
 //===----------------------------------------------------------------------===//
 // General Serialization Routines
 //===----------------------------------------------------------------------===//
@@ -2697,10 +2682,6 @@ void ASTWriter::WriteASTChain(Sema &SemaRef, MemorizeStatCalls *StatCalls,
          I != E; ++I)
     WriteDeclContextVisibleUpdate(*I);
 
-  // Write the updates to C++ template specialization lists.
-  if (!AdditionalTemplateSpecializations.empty())
-    WriteAdditionalTemplateSpecializations();
-
   WriteDeclUpdatesBlocks();
 
   Record.clear();
@@ -3340,3 +3321,13 @@ void ASTWriter::AddedCXXImplicitMember(const CXXRecordDecl *RD, const Decl *D) {
   Record.push_back(UPD_CXX_ADDED_IMPLICIT_MEMBER);
   AddDeclRef(D, Record);
 }
+
+void ASTWriter::AddedCXXTemplateSpecialization(const ClassTemplateDecl *TD,
+                                     const ClassTemplateSpecializationDecl *D) {
+  if (!(D->getPCHLevel() == 0 && TD->getPCHLevel() > 0))
+    return; // Not a source specialization added to a template from PCH.
+
+  UpdateRecord &Record = DeclUpdates[TD];
+  Record.push_back(UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION);
+  AddDeclRef(D, Record);
+}