Index: head/contrib/llvm-project/libcxx/include/atomic
===================================================================
--- head/contrib/llvm-project/libcxx/include/atomic
+++ head/contrib/llvm-project/libcxx/include/atomic
@@ -1480,11 +1480,11 @@
     : _Base(value) {}
 };
 
-#ifdef __linux__
+#if defined(__linux__) || (defined(__FreeBSD__) && defined(__mips__))
     using __cxx_contention_t = int32_t;
 #else
     using __cxx_contention_t = int64_t;
-#endif //__linux__
+#endif
 
 #if _LIBCPP_STD_VER >= 11