[Mesa-dev] [PATCH 14/18] util/register_allocate: Compute transitive conflicts using 2-passes

Jason Ekstrand jason at jlekstrand.net
Fri Jul 31 09:39:50 PDT 2015

On Fri, Jul 31, 2015 at 9:38 AM, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> On Fri, Jul 31, 2015 at 09:30:36AM -0700, Jason Ekstrand wrote:
>> This patch looks really sketchy to me.  First, you fundamentally
>> changed some of register_allocate's internal data structures with no
>> explanation as to what the change is and why it still works.  Maybe
>> the difference should be obvious to me, but it isn't.  Second, it
>> appears that your changes assume some intel-specific details of
>> register allocation.  The register_allocate code is *not* Intel
>> specific and we are *not* the only ones using it.
> You'll note the generic interface is maintained and the custom interface
> for Intel is where our overhead lies. And yes, we are the only ones
> using this interface.

Even if that is the case, you still haven't documented what the change
does, how it works, and why it produces the same results.

> -Chris
> --
> Chris Wilson, Intel Open Source Technology Centre

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