From a29f07a27ff26c9033cb85dffbf1da6b87db9da1 Mon Sep 17 00:00:00 2001
From: Paul Ferrand <paul@ferrand.cc>
Date: Sat, 4 Jan 2020 16:30:48 +0100
Subject: [PATCH] atomic_queue modifications for windows builds

---
 src/external/atomic_queue/defs.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/external/atomic_queue/defs.h b/src/external/atomic_queue/defs.h
index 7f7d3ada..0207032c 100644
--- a/src/external/atomic_queue/defs.h
+++ b/src/external/atomic_queue/defs.h
@@ -6,7 +6,7 @@
 
 #include <atomic>
 
-#if defined(__x86_64__)
+#if defined(__x86_64__) || defined(_M_X64)
 #include <emmintrin.h>
 namespace atomic_queue {
 constexpr int CACHE_LINE_SIZE = 64;
@@ -30,8 +30,13 @@ static inline void spin_loop_pause() noexcept {
 
 namespace atomic_queue {
 
+#if defined(__GNUC__)
 #define ATOMIC_QUEUE_LIKELY(expr) __builtin_expect(static_cast<bool>(expr), 1)
 #define ATOMIC_QUEUE_UNLIKELY(expr) __builtin_expect(static_cast<bool>(expr), 0)
+#else
+#define ATOMIC_QUEUE_LIKELY(expr) expr
+#define ATOMIC_QUEUE_UNLIKELY(expr) expr
+#endif
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////