[aarch64-port-dev ] RFR: Add support for pipeline scheduling

[Edward Nevill]

On Mon, 2014-11-03 at 09:40 +0000, Andrew Haley wrote:
> On 31/10/14 10:24, Edward Nevill wrote:
> 
> > In the webrev I have turned the default for pipeline scheduling
> > ('OptoScheduling'). It may be that we want to refine this and only
> > turn it on for In-Order cores (not sure what you do about
> > Big-Little). However for the moment I would like to make it the
> > default so the overnight tests will run with it switched on.
> 
> What are the performance changes on an OOO AArch64 target?

I did some benchmarking on OOO hardware and I did not see any significant performance change (ie any performance difference was within the bounds of statistical error).

We are in the middle of an office move right now. Once the lab is back to normal I will do some further benchmarking and if there is any performance degradation on OOO cores we can disable it on them.

All the best,
Ed.