src/cpu/x86/vm/x86.ad

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rev 9706 : 8147844: new method j.l.Runtime.onSpinWait() and the corresponding x86 hotspot instrinsic
Contributed-by: ikrylov, ygaevsky
Reviewed-by: iveresov, vlivanov
*** 1709,1718 ****
--- 1709,1722 ----
        break;
      case Op_CMoveVD:
        if (UseAVX < 1 || UseAVX > 2)
          ret_value = false;
        break;
+     case Op_OnSpinWait:
+       if (UseSSE < 2) // requires at least SSE4
+         ret_value = false;
+       break;
    }
  
    return ret_value;  // Per default match rules are supported.
  }