Allow us to compute linkage et al for instantiation-dependent types.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134932 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 10 insertions, 2 deletions

diff --git a/lib/AST/Type.cpp b/lib/AST/Type.cpp
index ca63ec87b1..20a0d595e4 100644
--- a/lib/AST/Type.cpp
+++ b/lib/AST/Type.cpp
@@ -1980,8 +1980,8 @@ static CachedProperties computeCachedProperties(const Type *T) {
 #define DEPENDENT_TYPE(Class,Base) case Type::Class:
 #define NON_CANONICAL_UNLESS_DEPENDENT_TYPE(Class,Base) case Type::Class:
 #include "clang/AST/TypeNodes.def"
-    // Treat dependent types as external.
-    assert(T->isDependentType());
+    // Treat instantiation-dependent types as external.
+    assert(T->isInstantiationDependentType());
     return CachedProperties(ExternalLinkage, DefaultVisibility, false);
 
   case Type::Builtin:
diff --git a/test/CodeGenCXX/mangle.cpp b/test/CodeGenCXX/mangle.cpp
index dd10ca4a21..8f1c682bb0 100644
--- a/test/CodeGenCXX/mangle.cpp
+++ b/test/CodeGenCXX/mangle.cpp
@@ -802,3 +802,11 @@ namespace test33 {
     // CHECK: call i32 @_ZN6test333fooINS_1BEEENS_1AIT_Xsr1XIS3_EE5valueEE4typeEv()
   }
 }
+
+namespace test34 {
+  template<typename T>
+  void f(decltype(sizeof(decltype(T() + T())))) {}
+
+  // CHECK: define weak_odr void @_ZN6test341fIiEEvDTstDTplcvT__EcvS1__EEE
+  template void f<int>(decltype(sizeof(1)));
+}