Re: [RFC 14/15] drm/i915: Use new IS_GEN range helpers

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Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> writes:

> Quoting Tvrtko Ursulin (2018-02-08 14:34:38)
>> 
>> On 08/02/2018 14:22, Ville Syrjälä wrote:
>> > On Thu, Feb 08, 2018 at 01:06:05PM +0000, Tvrtko Ursulin wrote:
>> >> From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
>> >>
>> >> Coccinelle transformation:
>> >>
>> >>   @@
>> >>   expression p, g;
>> >>   @@
>> >>   (
>> >>   -INTEL_GEN(p) > g
>> >>   +IS_GEN_GT(p, g)
>> > 
>> > I think this stuff makes the code pretty close to illegible.
>> > In this particular case even more so because "GT" actually
>> > means something very different to us.
>> 
>> Oh how true! And I did not realize it at all while writing it! :)
>> 
>> Anyway, something like this, regardless of a name, is needed if people 
>> want this to be effective. Since the checks have to be moved to known at 
>> compile time. Or a completely different approach will be needed.
>
> IS_GEN_RANGE() doesn't cut it?
>

IS_GEN_RANGE(8,9);

short and readable

and

IS_GEN_RANGE(6, ANY);

?

-Mika

> I think that people find it inconvenient to use, so some sugar is still
> required.
> -Chris
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