RFR: 8192123: Zero should use compiler built-ins for atomics on linux-arm

[John Paul Adrian Glaubitz]

On 11/29/2017 04:39 PM, coleen.phillimore at oracle.com wrote:
>> Hmm.  This doesn't fix a bug, and there's a non-zero probability of
>> introducing one.  I guess it should be OK, but this is a combination
>> of performance improvement (possibly) and cleanup.
>>
> Please save this change for JDK 11.

I just made the same obvious change as I did for m68k. Is there really
a risk of introducing a regression?

It only affects Zero after all which is not officially supported, is it?

The supported ARMv7 Server build is not affected as this change is
below the linux_zero directory.

Adrian

-- 
  .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz at debian.org
`. `'   Freie Universitaet Berlin - glaubitz at physik.fu-berlin.de
   `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913