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

llvm-svn: 197281
diff --git a/clang/test/CodeGenCXX/volatile-1.cpp b/clang/test/CodeGenCXX/volatile-1.cpp
index 472c01a..aa900c3 100644
--- a/clang/test/CodeGenCXX/volatile-1.cpp
+++ b/clang/test/CodeGenCXX/volatile-1.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -Wno-unused-value -emit-llvm %s -o - | FileCheck %s
+// RUN: %clang_cc1 -Wno-unused-value -cxx-abi itanium -emit-llvm %s -o - | FileCheck %s
 
 // CHECK: @i = global [[INT:i[0-9]+]] 0
 volatile int i, j, k;