/* CompareAndSet, Long: */
  case vmIntrinsics::_compareAndSetLong:
    if (!Matcher::match_rule_supported(Op_CompareAndSwapL)) return false;
    break;
  case vmIntrinsics::_weakCompareAndSetLongPlain:
  case vmIntrinsics::_weakCompareAndSetLongAcquire:
  case vmIntrinsics::_weakCompareAndSetLongRelease:
  case vmIntrinsics::_weakCompareAndSetLong:
    if (!Matcher::match_rule_supported(Op_WeakCompareAndSwapL)) return false;
    break;

  /* CompareAndSet, Int: */
  case vmIntrinsics::_compareAndSetInt:
    if (!Matcher::match_rule_supported(Op_CompareAndSwapI)) return false;
    break;
  case vmIntrinsics::_weakCompareAndSetIntPlain:
  case vmIntrinsics::_weakCompareAndSetIntAcquire:
  case vmIntrinsics::_weakCompareAndSetIntRelease:
  case vmIntrinsics::_weakCompareAndSetInt:
    if (!Matcher::match_rule_supported(Op_WeakCompareAndSwapL)) return false;
    break;

Note that last line:

    if (!Matcher::match_rule_supported(Op_WeakCompareAndSwapL)...

Shouldn't that be Op_WeakCompareAndSwapI ?