RFR: 8202993: Add support for x86 testptr/testq with register and address

[Vladimir Kozlov]

Looks good.

Thanks,
Vladimir

On 5/11/18 4:16 AM, Per Liden wrote:
> On x86, we currently only have MacroAssembler::testptr() overloads for testing registers and immediate values. In ZGC, 
> we need a version taking a register and an address.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8202993
> Webrev: http://cr.openjdk.java.net/~pliden/8202993/webrev.0
> 
> /Per