Prepare for using MS ABI by default for Win32: update CodeGenCXX tests

llvm-svn: 197281
diff --git a/clang/test/CodeGenCXX/function-template-specialization.cpp b/clang/test/CodeGenCXX/function-template-specialization.cpp
index 4a79fb1..4ee9124 100644
--- a/clang/test/CodeGenCXX/function-template-specialization.cpp
+++ b/clang/test/CodeGenCXX/function-template-specialization.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
+// RUN: %clang_cc1 -emit-llvm -cxx-abi itanium %s -o - | FileCheck %s
 template<typename T, typename U>
 T* next(T* ptr, const U& diff);