Fix build failure on windows due to vector type

[ROCm/hip commit: 43c144fe68]
2019-02-05 12:22:32 -05:00
@@ -34,7 +34,7 @@ THE SOFTWARE.

 #include "hip/hcc_detail/host_defines.h"

-#if !defined(_MSC_VER)
+#if !defined(_MSC_VER) || __HIP_DEVICE_COMPILE__
 #if defined(__clang__)
    #define __NATIVE_VECTOR__(n, ...) __attribute__((ext_vector_type(n)))
 #elif defined(__GNUC__) // N.B.: GCC does not support .xyzw syntax.