[PATCH v2 14/14] eal: redefine macro to be integer literal for MSVC

[Tyler Retzlaff <roretzla@linux.microsoft.com>]

MSVC __declspec(align(#)) is limited and accepts only integer literals
as opposed to constant expressions. define XMM_SIZE to be 16 instead of
sizeof(xmm_t) and static_assert that sizeof(xmm_t) == 16 for
compatibility.

Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
---
 lib/eal/x86/include/rte_vect.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/eal/x86/include/rte_vect.h b/lib/eal/x86/include/rte_vect.h
index a1a537e..441f1a0 100644
--- a/lib/eal/x86/include/rte_vect.h
+++ b/lib/eal/x86/include/rte_vect.h
@@ -11,6 +11,7 @@
  * RTE SSE/AVX related header.
  */
 
+#include <assert.h>
 #include <stdint.h>
 #include <rte_config.h>
 #include <rte_common.h>
@@ -33,9 +34,11 @@
 
 typedef __m128i xmm_t;
 
-#define	XMM_SIZE	(sizeof(xmm_t))
+#define	XMM_SIZE	16
 #define	XMM_MASK	(XMM_SIZE - 1)
 
+static_assert(sizeof(xmm_t) == 16, "");
+
 typedef union rte_xmm {
 	xmm_t    x;
 	uint8_t  u8[XMM_SIZE / sizeof(uint8_t)];
-- 
1.8.3.1