src/hotspot/cpu/x86/vm_version_x86.cpp

*** 853,862 ****
--- 853,873 ----
      if (!FLAG_IS_DEFAULT(UseGHASHIntrinsics))
        warning("GHASH intrinsic requires CLMUL and SSE2 instructions on this CPU");
      FLAG_SET_DEFAULT(UseGHASHIntrinsics, false);
    }
  
+   // Base64 Intrinsics (Check the condition for which the intrinsic will be active)
+   if ((UseAVX > 2) && supports_avx512vl() && supports_avx512bw()) {
+     if (FLAG_IS_DEFAULT(UseBASE64Intrinsics)) {
+       UseBASE64Intrinsics = true;
+     }
+   } else if (UseBASE64Intrinsics) {
+      if (!FLAG_IS_DEFAULT(UseBASE64Intrinsics))
+       warning("Base64 intrinsic requires EVEX instructions on this CPU");
+     FLAG_SET_DEFAULT(UseBASE64Intrinsics, false);
+   }
+ 
    if (supports_fma() && UseSSE >= 2) { // Check UseSSE since FMA code uses SSE instructions
      if (FLAG_IS_DEFAULT(UseFMA)) {
        UseFMA = true;
      }
    } else if (UseFMA) {