From ba9b001dd367a0b31bce49cd90d74f0cd5a587b0 Mon Sep 17 00:00:00 2001
From: Mattias Jansson <mjansson@gmail.com>
Date: Mon, 1 Apr 2024 09:04:17 +0200
Subject: [PATCH] Use __yield on ARM64 Windows

---
 rpmalloc/rpmalloc.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/rpmalloc/rpmalloc.c b/rpmalloc/rpmalloc.c
index e82bca2..33d468f 100644
--- a/rpmalloc/rpmalloc.c
+++ b/rpmalloc/rpmalloc.c
@@ -841,7 +841,11 @@ rpmalloc_set_main_thread(void) {
 static void
 _rpmalloc_spin(void) {
 #if defined(_MSC_VER)
+#if defined(_M_ARM64)
+	__yield();
+#else
 	_mm_pause();
+#endif
 #elif defined(__x86_64__) || defined(__i386__)
 	__asm__ volatile("pause" ::: "memory");
 #elif defined(__aarch64__) || (defined(__arm__) && __ARM_ARCH >= 7)