diff --git a/llvm/utils/benchmark/CMakeLists.txt b/llvm/utils/benchmark/CMakeLists.txt
--- a/llvm/utils/benchmark/CMakeLists.txt
+++ b/llvm/utils/benchmark/CMakeLists.txt
@@ -130,6 +130,13 @@
     set(CMAKE_SHARED_LINKER_FLAGS_MINSIZEREL "${CMAKE_SHARED_LINKER_FLAGS_MINSIZEREL} /LTCG")
     set(CMAKE_EXE_LINKER_FLAGS_MINSIZEREL "${CMAKE_EXE_LINKER_FLAGS_MINSIZEREL} /LTCG")
   endif()
+
+  # Turn off this warning for clang-cl builds
+  if(CLANG_CL)
+    if (CXX_SUPPORTS_SUGGEST_OVERRIDE_FLAG)
+      add_cxx_compiler_flag(-Wno-suggest-override)
+    endif()
+  endif()
 else()
   # Try and enable C++11. Don't use C++14 because it doesn't work in some
   # configurations.