diff --git a/lib/CodeGen/CGVtable.cpp b/lib/CodeGen/CGVtable.cpp
index ba5a0c3..ca148da 100644
--- a/lib/CodeGen/CGVtable.cpp
+++ b/lib/CodeGen/CGVtable.cpp
@@ -1493,8 +1493,22 @@
   llvm::GlobalVariable::LinkageTypes Linkage;
   if (RD->isInAnonymousNamespace() || !RD->hasLinkage())
     Linkage = llvm::GlobalVariable::InternalLinkage;
-  else if (KeyFunction && !MD->isInlined())
-    Linkage = llvm::GlobalVariable::ExternalLinkage;
+  else if (KeyFunction && !MD->isInlined()) {
+    switch (MD->getTemplateSpecializationKind()) {
+    case TSK_Undeclared:
+    case TSK_ExplicitSpecialization:
+      Linkage = llvm::GlobalVariable::ExternalLinkage;
+      break;
+
+    case TSK_ImplicitInstantiation:
+    case TSK_ExplicitInstantiationDeclaration:
+      // FIXME: could an explicit instantiation declaration imply
+      // available_externally linkage?
+    case TSK_ExplicitInstantiationDefinition:
+      Linkage = llvm::GlobalVariable::WeakODRLinkage;
+      break;
+    }
+  }
   else
     Linkage = llvm::GlobalVariable::WeakODRLinkage;
   
diff --git a/lib/CodeGen/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp
index 16a01cf..85d57e7 100644
--- a/lib/CodeGen/CodeGenModule.cpp
+++ b/lib/CodeGen/CodeGenModule.cpp
@@ -547,7 +547,8 @@
       const CXXRecordDecl *RD = MD->getParent();
       if (MD->isOutOfLine() && RD->isDynamicClass()) {
         const CXXMethodDecl *KeyFunction = getContext().getKeyFunction(RD);
-        if (KeyFunction == MD->getCanonicalDecl())
+        if (KeyFunction && 
+            KeyFunction->getCanonicalDecl() == MD->getCanonicalDecl())
           return false;
       }
     }