diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_flat_map.h b/compiler-rt/lib/sanitizer_common/sanitizer_flat_map.h
--- a/compiler-rt/lib/sanitizer_common/sanitizer_flat_map.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_flat_map.h
@@ -124,8 +124,7 @@
 
   T *Get(uptr idx) const {
     DCHECK_LT(idx, kSize1);
-    return reinterpret_cast<T *>(
-        atomic_load(&map1_[idx], memory_order_acquire));
+    return reinterpret_cast<T *>(atomic_load_relaxed(&map1_[idx]));
   }
 
   T *GetOrCreate(uptr idx) const {
@@ -141,8 +140,7 @@
     if (!res) {
       res = reinterpret_cast<T *>(MmapOrDie(MmapSize(), "TwoLevelMap"));
       MapUnmapCallback().OnMap(reinterpret_cast<uptr>(res), kSize2);
-      atomic_store(&map1_[idx], reinterpret_cast<uptr>(res),
-                   memory_order_release);
+      atomic_store_relaxed(&map1_[idx], reinterpret_cast<uptr>(res));
     }
     return res;
   }