> 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 <roret...@linux.microsoft.com>
> Acked-by: Morten Brørup <m...@smartsharesystems.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, "");
I think it is better be:
static_assert(sizeof(xmm_t) == XMM_SIZE, "");
BTW, is there any chance that in future versions MSVC would accept
align(<constant_expression>)?
> +
> typedef union rte_xmm {
> xmm_t x;
> uint8_t u8[XMM_SIZE / sizeof(uint8_t)];
> --
> 1.8.3.1
