[Intel-gfx] [PATCH v2] drm/i915: Optimise VMA lookup slightly

[Chris Wilson]

On Tue, Dec 13, 2016 at 02:37:27PM +0000, Tvrtko Ursulin wrote:
> From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> 
> Cast VM pointers before substraction to save the compiler
> doing a smart one which includes multiplication.
> 
> v2: Only keep the first optimisation and prettify it. (Chris Wilson)
> 
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> Cc: Chris Wilson <chris at chris-wilson.co.uk>

Step 1, ok.
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>

(I wasn't against the others, just curious as to what gcc was doing for
#2 and #3 I'd like just to pursue a different path altogether :)
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre