[aarch64-port-dev ] RFR: JDK8: Add support for Neon implementation of CRC32

[Edward Nevill]

On Thu, 2014-06-12 at 12:51 +0100, Andrew Haley wrote:
> On 06/12/2014 11:34 AM, Edward Nevill wrote:
> > I have added a -XX:+/-UseNeon switch to enable/disable the Neon CRC. This is off by default.
> 
> Shouldn't we probe for Neon?

AFAIUI Neon is always available on aarch64.

It is only the 1Q extensions to PMULL/PMULL2 which may not be available because they are part of the crypto extensions.

I have turned it off by default for the moment until we have the opportunity to test it fully.

Regards,
Ed.