[LLVMdev] SLP vectorizer on AVX feature

Renato Golin renato.golin at linaro.org
Wed Jul 1 13:29:25 PDT 2015


On 1 July 2015 at 21:22, Frank Winter <fwinter at jlab.org> wrote:
> there were two follow-up emails.

I only got one... weird...


> The issue is solved. The SLP vectorizer has
> a magic number built into the code which determines the max. vector length
> to search for. That was set to 128 bits. Increasing it to 256 bits solved
> the issue.

That looks like a simple fix. Is it upstream yet? :)


> For inconsistency reasons it must be '--debug-only=SLP' and the output can
> be found in one of the follow-up emails.

Of course. Maybe we should mean "vectorize" as all of them? Anyway,
that's unrelated.

cheers,
--renato



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