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From: Tyler Retzlaff <roretzla@linux.microsoft.com>
To: dev@dpdk.org
Cc: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>,
 Bruce Richardson <bruce.richardson@intel.com>,
 Chengwen Feng <fengchengwen@huawei.com>,
 Cristian Dumitrescu <cristian.dumitrescu@intel.com>,
 David Christensen <drc@linux.vnet.ibm.com>,
 David Hunt <david.hunt@intel.com>, Ferruh Yigit <ferruh.yigit@amd.com>,
 Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>,
 Jasvinder Singh <jasvinder.singh@intel.com>,
 Jerin Jacob <jerinj@marvell.com>, Kevin Laatz <kevin.laatz@intel.com>,
 Konstantin Ananyev <konstantin.v.ananyev@yandex.ru>,
 Min Zhou <zhoumin@loongson.cn>, Ruifeng Wang <ruifeng.wang@arm.com>,
 Sameh Gobriel <sameh.gobriel@intel.com>,
 Stanislaw Kardach <kda@semihalf.com>,
 Thomas Monjalon <thomas@monjalon.net>,
 Vladimir Medvedkin <vladimir.medvedkin@intel.com>,
 Yipeng Wang <yipeng1.wang@intel.com>,
 Tyler Retzlaff <roretzla@linux.microsoft.com>
Subject: [PATCH v3 02/39] eal: redefine macro to be integer literal for MSVC
Date: Tue, 13 Feb 2024 23:05:45 -0800
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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