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
@@ -102,7 +102,7 @@
 
   bool contains(uptr idx) const {
     CHECK_LT(idx, kSize1 * kSize2);
-    return Get(idx / kSize2);
+    return atomic_load(&map1_[idx / kSize2], memory_order_acquire);
   }
 
   const T &operator[](uptr idx) const {
@@ -122,14 +122,12 @@
     return RoundUpTo(kSize2 * sizeof(T), GetPageSizeCached());
   }
 
-  T *Get(uptr idx) const {
-    DCHECK_LT(idx, kSize1);
-    return reinterpret_cast<T *>(
-        atomic_load(&map1_[idx], memory_order_acquire));
-  }
-
   T *GetOrCreate(uptr idx) const {
-    T *res = Get(idx);
+    DCHECK_LT(idx, kSize1);
+    // If relaxed load fails to see stored ptr, the code will fall back to
+    // Create() and reload the value again with locked mutex as a memory
+    // barrier.
+    T *res = reinterpret_cast<T *>(atomic_load_relaxed(&map1_[idx]));
     if (LIKELY(res))
       return res;
     return Create(idx);