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Re: [PATCH 2/3][AArch64] Improve zero extend


On 20/07/16 16:28, Wilco Dijkstra wrote:
> Richard Earnshaw wrote:
>> Both of which look reasonable to me.
> 
> Yes the code we generate for these examples is fine, I don't believe this
> example ever went bad. It's just the cost calculation that is incorrect with
> the outer check.
> 
> Wilco
> 
> 

So under what circumstances does it lead to sub-optimal code?

R.


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