RFR: Some more AArch64 CAS/CAE fixes

[Aleksey Shipilev]

On 11/18/2016 03:04 PM, Roman Kennke wrote:
> Am Freitag, den 18.11.2016, 14:41 +0100 schrieb Aleksey Shipilev:
>> On 11/17/2016 09:11 PM, Roman Kennke wrote:
>>>
>>> http://cr.openjdk.java.net/~rkennke/aarch64-cas/webrev.02/
>>
>> *) I don't quite get the NoSp change. The change now allows some
>> operands to take SP. Was it an overlook, or AArch64 really has some
>> constraints about this?
> 
> Input (read-only) registers can be anything. It is important that
> output (write-to) registers are *not* SP (e.g. the current thread or
> heap-base registers). We had a few places where the result or tmp
> registers was including SP, e.g. :

Got it. Thanks!

> http://cr.openjdk.java.net/~rkennke/aarch64-cas/webrev.03/

Looks good then.

Thanks,
-Aleksey