[Patch 2/2] MdePkg: update Base.h in MdePkg to check the _MSC_VER

[Yonghong Zhu <yonghong.zhu@intel.com>]

update Base.h in MdePkg to check the _MSC_VER and define
GLOBAL_REMOVE_IF_UNREFERENCED to nothing for VS2013 and higher tool
chain tags.

Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Yonghong Zhu <yonghong.zhu@intel.com>
---
 MdePkg/Include/Base.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/MdePkg/Include/Base.h b/MdePkg/Include/Base.h
index 5b311f6..21a603a 100644
--- a/MdePkg/Include/Base.h
+++ b/MdePkg/Include/Base.h
@@ -89,11 +89,11 @@ VERIFY_SIZE_OF (__VERIFY_UINT32_ENUM_SIZE, 4);
 //
 // The Microsoft* C compiler can removed references to unreferenced data items
 //  if the /OPT:REF linker option is used. We defined a macro as this is a
 //  a non standard extension
 //
-#if defined(_MSC_EXTENSIONS) && !defined (MDE_CPU_EBC)
+#if defined(_MSC_EXTENSIONS) && _MSC_VER < 1800 && !defined (MDE_CPU_EBC)
   ///
   /// Remove global variable from the linked image if there are no references to
   /// it after all compiler and linker optimizations have been performed.
   ///
   ///
-- 
2.6.1.windows.1