1 files changed, 55 insertions, 0 deletions
diff --git a/clang/test/CodeGenCXX/vtable-available-externally.cpp b/clang/test/CodeGenCXX/vtable-available-externally.cpp
new file mode 100644
index 00000000000..b6e48c8f8c9
--- /dev/null
+++ b/clang/test/CodeGenCXX/vtable-available-externally.cpp
@@ -0,0 +1,55 @@
+// RUN: %clang_cc1 %s -I%S -triple=x86_64-apple-darwin10 -emit-llvm -O3 -o %t 
+// RUN: FileCheck --check-prefix=CHECK-TEST1 %s < %t
+// RUN: FileCheck --check-prefix=CHECK-TEST2 %s < %t
+
+#include <typeinfo>
+
+// Test1::A's key function (f) is not defined in this translation unit, but in
+// order to devirtualize calls, we emit the class related data with
+// available_externally linkage.
+
+// CHECK-TEST1: @_ZTVN5Test11AE = available_externally
+// CHECK-TEST1: @_ZTSN5Test11AE = available_externally
+// CHECK-TEST1: @_ZTIN5Test11AE = available_externally
+namespace Test1 {
+
+struct A {
+  A();
+  virtual void f();
+  virtual ~A() { }
+};
+
+A::A() { }
+
+void f(A* a) {
+  a->f();
+};
+
+// CHECK: define void @_ZN5Test11gEv
+// CHECK: call void @_ZN5Test11A1fEv
+void g() {
+  A a;
+  f(&a);
+}
+
+}
+
+// Test2::A's key function (f) is defined in this translation unit, but when
+// we're doing codegen for the typeid(A) call, we don't know that yet.
+// This tests mainly that the typeinfo and typename constants have their linkage
+// updated correctly.
+
+// CHECK-TEST2: @_ZTSN5Test21AE = constant
+// CHECK-TEST2: @_ZTIN5Test21AE = unnamed_addr constant
+// CHECK-TEST2: @_ZTVN5Test21AE = unnamed_addr constant
+namespace Test2 {
+  struct A {
+    virtual void f();
+  };
+
+  const std::type_info &g() {
+    return typeid(A);
+  };
+
+  void A::f() { }
+}