diff --git a/llvm/include/llvm/ADT/APInt.h b/llvm/include/llvm/ADT/APInt.h
--- a/llvm/include/llvm/ADT/APInt.h
+++ b/llvm/include/llvm/ADT/APInt.h
@@ -2027,9 +2027,11 @@
   /// @}
 };
 
+#if !(__cplusplus > 201703L && __cpp_impl_three_way_comparison >= 201907L)
 inline bool operator==(uint64_t V1, const APInt &V2) { return V2 == V1; }
 
 inline bool operator!=(uint64_t V1, const APInt &V2) { return V2 != V1; }
+#endif
 
 /// Unary bitwise complement operator.
 ///