From 7f7131dc5568e07a28f7c5d422c7b3a63b38a224 Mon Sep 17 00:00:00 2001
From: Jeffrey Walton <noloader@gmail.com>
Date: Thu, 16 Nov 2017 23:07:30 -0500
Subject: [PATCH] Fix GCM_Xor16_SSE2 for 32-bit MSVC compiles

---
 gcm.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcm.cpp b/gcm.cpp
index c029ae1b..2a05a6c5 100644
--- a/gcm.cpp
+++ b/gcm.cpp
@@ -84,7 +84,7 @@ extern void GCM_Xor16_SSE2(byte *a, const byte *b, const byte *c);
 # else
 static inline void GCM_Xor16_SSE2(byte *a, const byte *b, const byte *c)
 {
-#  if CRYPTOPP_SSE2_ASM_AVAILABLE
+#  if CRYPTOPP_SSE2_ASM_AVAILABLE && defined(__GNUC__)
     asm ("movdqa %1, %%xmm0; pxor %2, %%xmm0; movdqa %%xmm0, %0;"
          : "=m" (a[0]) : "rm"(b[0]), "rm"(c[0]));
 #  else  // CRYPTOPP_SSE2_INTRIN_AVAILABLE