add tbaa metadata to vtable pointer loads/stores

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153447 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 19 insertions, 0 deletions

diff --git a/test/CodeGen/tbaa-for-vptr.cpp b/test/CodeGen/tbaa-for-vptr.cpp
new file mode 100644
index 0000000000..c63c736852
--- /dev/null
+++ b/test/CodeGen/tbaa-for-vptr.cpp
@@ -0,0 +1,19 @@
+// RUN: %clang_cc1 -emit-llvm -o - -O1 %s | FileCheck %s
+// Check that we generate TBAA for vtable pointer loads and stores.
+struct A {
+  virtual int foo() const ;
+  virtual ~A();
+};
+
+void CreateA() {
+  new A;
+}
+
+void CallFoo(A *a) {
+  a->foo();
+}
+
+// CHECK: %vtable = load {{.*}} !tbaa !0
+// CHECK: store {{.*}} !tbaa !0
+// CHECK: !0 = metadata !{metadata !"vtable pointer", metadata !1}
+// CHECK: !1 = metadata !{metadata !"Simple C/C++ TBAA", null}