add test case

Author: yingcong-wu

compiler-rt/test/cfi/make_shared.cpp

@@ -0,0 +1,11 @@
+// RUN: %clangxx_cfi %s -o %t
+// RUN: %t
+
+#include <memory>
+
+struct Foo {
+  Foo() {}
+  virtual ~Foo() {}
+};
+
+int main(int argc, char **argv) { std::make_shared<Foo>(); }