Why is REG_ALLOC_ORDER not defined on Aarch64

[Andrew Pinski]

On Fri, May 25, 2018 at 3:35 PM, Steve Ellcey <sellcey@cavium.com> wrote:
> I was curious if there was any reason that REG_ALLOC_ORDER is not
> defined for Aarch64.  Has anyone tried this to see if it could help
> performance?  It is defined for many other platforms.

https://gcc.gnu.org/ml/gcc-patches/2015-07/msg01815.html
https://gcc.gnu.org/ml/gcc-patches/2015-07/msg01822.html

>
> Steve Ellcey
> sellcey@cavium.com