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Re: [PATCH i386 4/8] [AVX512] [4/n] Add substed patterns: `sd' subst.


On 11/06/2013 05:15 PM, Kirill Yukhin wrote:
> Hello,
> This small patch introduces `sd' subst.
> `sd' (Source-Destination) subst is almost the same, as
> the usual mask-subst, but it's only used for zero-masking. The reason is that
> some patterns already have an operand with constraint "0" and we can't add a new
> operand with the same constraint. So, we add only zero-masking here by subst and
> manually write a pattern for merge-masking where we use match_dup instead of an
> operand with constraint "0".
> 
> Bootstrap pass.


Ok.


r~


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