From e5f6d71b96b5149e5e1df30721e1870abdb218ce Mon Sep 17 00:00:00 2001
From: borg323 <borg323@users.noreply.github.com>
Date: Thu, 9 Feb 2023 21:14:59 +0200
Subject: [PATCH] Fix build on arm windows

avoids the use of _mm_malloc on arm windows.

fixes #4379
closes https://github.com/official-stockfish/Stockfish/pull/4388

No functional change
---
 AUTHORS      | 1 +
 src/misc.cpp | 8 ++++++--
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/AUTHORS b/AUTHORS
index 42ba5930..634de4a3 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -35,6 +35,7 @@ Ben Chaney (Chaneybenjamini)
 Ben Koshy (BKSpurgeon)
 Bill Henry (VoyagerOne)
 Bojun Guo (noobpwnftw, Nooby)
+borg323
 Boštjan Mejak (PedanticHacker)
 braich
 Brian Sheppard (SapphireBrand, briansheppard-toast)
diff --git a/src/misc.cpp b/src/misc.cpp
index 7d848d32..e65faab9 100644
--- a/src/misc.cpp
+++ b/src/misc.cpp
@@ -448,8 +448,10 @@ void* std_aligned_alloc(size_t alignment, size_t size) {
 #if defined(POSIXALIGNEDALLOC)
   void *mem;
   return posix_memalign(&mem, alignment, size) ? nullptr : mem;
-#elif defined(_WIN32)
+#elif defined(_WIN32) && !defined(_M_ARM) && !defined(_M_ARM64)
   return _mm_malloc(size, alignment);
+#elif defined(_WIN32)
+  return _aligned_malloc(size, alignment);
 #else
   return std::aligned_alloc(alignment, size);
 #endif
@@ -459,8 +461,10 @@ void std_aligned_free(void* ptr) {
 
 #if defined(POSIXALIGNEDALLOC)
   free(ptr);
-#elif defined(_WIN32)
+#elif defined(_WIN32) && !defined(_M_ARM) && !defined(_M_ARM64)
   _mm_free(ptr);
+#elif defined(_WIN32)
+  _aligned_free(ptr);
 #else
   free(ptr);
 #endif
-- 
2.39.2