RFR(XS): fix c2-only compilation and some tests

[Liu Xin]

Hi, Vladimir, 

Here the new revision includes your change. 
http://cr.openjdk.java.net/~phh/8207965/webrev.05/ <http://cr.openjdk.java.net/~phh/8207965/webrev.05/>

Thank you for reviewing it. 

Thanks,
—lx

> On Aug 8, 2018, at 1:40 PM, Vladimir Kozlov <vladimir.kozlov at oracle.com> wrote:
> 
> TestAESIntrinsicsOnUnsupportedConfig.java

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