[Microsoft][C++] Clang doesn't support a use of "this" pointer inside inline asm 

add triple to test

Differential Revision: http://reviews.llvm.org/D15115

llvm-svn: 255647
diff --git a/clang/test/CodeGen/ms_this.cpp b/clang/test/CodeGen/ms_this.cpp
index 10cd52f..f3d8861 100644
--- a/clang/test/CodeGen/ms_this.cpp
+++ b/clang/test/CodeGen/ms_this.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fasm-blocks -emit-llvm %s -o - | FileCheck %s
+// RUN: %clang_cc1 -triple x86_64-pc-win32 -fasm-blocks -emit-llvm %s -o - | FileCheck %s
 class t1 {
 public:
   double a;