src/cpu/x86/vm/vm_version_x86.cpp

*** 427,436 ****
--- 427,441 ----
          UseXmmI2D = true;
        } else {
          UseXmmI2D = false;
        }
      }
+     if( FLAG_IS_DEFAULT(UseSSE42Intrinsics) ) {
+       if( supports_sse4_2() && UseSSE >= 4 ) {
+         UseSSE42Intrinsics = true;
+       }
+     }
  
      // Use count leading zeros count instruction if available.
      if (supports_lzcnt()) {
        if (FLAG_IS_DEFAULT(UseCountLeadingZerosInstruction)) {
          UseCountLeadingZerosInstruction = true;