webrev for hsail support for CompareAndSwap and Membar

[Doug Simon]

I’ll integrate these changes.

On Nov 7, 2013, at 9:33 PM, Deneau, Tom <tom.deneau at amd.com> wrote:

> I have posted a webrev enabling HSAIL backend support for CompareAndSwapNode to http://cr.openjdk.java.net/~tdeneau/graal-webrevs/webrev-compareandswap/webrev/ 
> 
> This  webrev also adds support for a volatile load and store with emitMembar.  
> 
> I added the CompareAndSwap support to  HSAILHotSpotLIRGenerator (instead of HSAILLIRGenerator) because of the hotspot-specific special handling when the CAS location is a compressed oop. (This was definitely the more complicated case to implement).
> 
> Three test cases were also added, using each of AtomicInteger, AtomicLong and AtomicReference.
> 
> Could you please look this over?
> 
> -- Tom
> 
> 
>