Preserve that a TemplateName was arrived at by substituting

for a template template parameter.

Uses to follow.

I've also made the uniquing of SubstTemplateTemplateParmPacks
use a ContextualFoldingSet as a minor space efficiency.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134137 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/Serialization/ASTWriter.cpp b/lib/Serialization/ASTWriter.cpp
index d616c84000..fb1795e6a4 100644
--- a/lib/Serialization/ASTWriter.cpp
+++ b/lib/Serialization/ASTWriter.cpp
@@ -3694,6 +3694,14 @@ void ASTWriter::AddTemplateName(TemplateName Name, RecordDataImpl &Record) {
       Record.push_back(DepT->getOperator());
     break;
   }
+
+  case TemplateName::SubstTemplateTemplateParm: {
+    SubstTemplateTemplateParmStorage *subst
+      = Name.getAsSubstTemplateTemplateParm();
+    AddDeclRef(subst->getParameter(), Record);
+    AddTemplateName(subst->getReplacement(), Record);
+    break;
+  }
       
   case TemplateName::SubstTemplateTemplateParmPack: {
     SubstTemplateTemplateParmPackStorage *SubstPack