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Re: [PATCH] sysdeps/arm/armv7/multiarch/memcpy_impl.S: Improve performance.

On Tue, Sep 03, 2013 at 02:34:54PM -0500, Ryan S. Arnold wrote:
> On Tue, Sep 3, 2013 at 12:37 PM, OndÅej BÃlka <> wrote:
> >> I disagree strongly. You *must* come up with a measurable answer and
> >> looking at a graph is never a solution I'm going to accept.
> >>
> > You can have that opinion.
> > Looking at performance graphs is most powerful technique how to
> > understand performance. I got most of my improvements from analyzing
> > these.
> Are there any open source pipeline analysis tools?  I've found the one
> I've used (proprietary) to be a pretty good indicator of general
> instruction selection optimization/correctness.
After bit of googling I found
Is anyone familiar with it?

This reminded me to work on project in my backlog. Writing tool that can
legaly shuffle assembler instructions. 
Then I run simulated annaling to get optimal sheduling for given processor 
and benchmark. 
With dryrun data this will be close to real performance on small size so
I could get some percents there.

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