From ee48e6e4dce77253421514a35b0fa3efd831bf25 Mon Sep 17 00:00:00 2001
From: Jameson Nash <vtjnash@gmail.com>
Date: Thu, 15 Nov 2018 19:22:36 +0000
Subject: [PATCH] thread,mingw64: need intrin.h header for SSE2 MemoryBarrier

Needed for compile with `-msse2` (such as implied by `-march=pentium4`)
for the i686-w64-mingw64 target triple. This seems like a header mistake, but
we can work-around it here by including the header explicitly.

Refs: https://sourceforge.net/p/mingw-w64/bugs/712
PR-URL: https://github.com/libuv/libuv/pull/2083
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Bartosz Sosnowski <bartosz@janeasystems.com>
---
 src/win/thread.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/win/thread.c b/src/win/thread.c
index 56ca41aab..fd4b7c986 100644
--- a/src/win/thread.c
+++ b/src/win/thread.c
@@ -23,6 +23,12 @@
 #include <limits.h>
 #include <stdlib.h>
 
+#if defined(__MINGW64_VERSION_MAJOR)
+/* MemoryBarrier expands to __mm_mfence in some cases (x86+sse2), which may
+ * require this header in some versions of mingw64. */
+#include <intrin.h>
+#endif
+
 #include "uv.h"
 #include "internal.h"