RFR: 8150394: aarch64: add support for 8.1 LSE CAS instructions

[Edward Nevill]

On Thu, 2016-02-25 at 14:49 +0000, Andrew Haley wrote:
> Here's what I've got, merging my changes for VarHandles with yours
> for LSE CAS:
> 
> http://cr.openjdk.java.net/~aph/aarch64-lse-cas/
> 
> Please test it.
> 

Hi,

Clean run through jcstress with -XX:+UseLSE. Also clean on some partners tests with and without -XX:+UseLSE.

Looks fine,
Ed.