Index: lib/builtins/emutls.c
===================================================================
--- lib/builtins/emutls.c
+++ lib/builtins/emutls.c
@@ -102,7 +102,6 @@
 #include <malloc.h>
 #include <stdio.h>
 #include <assert.h>
-#include <immintrin.h>
 
 static LPCRITICAL_SECTION emutls_mutex;
 static DWORD emutls_tls_index = TLS_OUT_OF_INDEXES;
@@ -203,6 +202,7 @@
 /* Provide atomic load/store functions for emutls_get_index if built with MSVC.
  */
 #if !defined(__ATOMIC_RELEASE)
+#include <immintrin.h>
 
 enum { __ATOMIC_ACQUIRE = 2, __ATOMIC_RELEASE = 3 };