From 99d5b9a05aa372897a3a2b203f7cbb384178023d Mon Sep 17 00:00:00 2001
From: Yibo Cai <yibocai@apache.org>
Date: Tue, 14 Sep 2021 11:19:30 +0800
Subject: [PATCH] Fix SSE build failure with MSVC

MSVC does not define __SSEn__ macros. Currently, we have to specify
/arch:AVXn for an SSE only binary.
---
 include/xsimd/config/xsimd_config.hpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/xsimd/config/xsimd_config.hpp b/include/xsimd/config/xsimd_config.hpp
index 1afbf2cfd..6e4d6b389 100644
--- a/include/xsimd/config/xsimd_config.hpp
+++ b/include/xsimd/config/xsimd_config.hpp
@@ -210,6 +210,9 @@
 // Workaround for MSVC compiler
 #ifdef _MSC_VER
 
+// NB: MSVC does not define __SSEn__
+#define XSIMD_WITH_SSE4_2 1
+
 #if XSIMD_WITH_AVX512
 #define XSIMD_WITH_AVX2 1
 #endif