[LLVMdev] How to broaden the SLP vectorizer's search

[Renato Golin]

On 7 August 2014 17:33, Chad Rosier <mcrosier at codeaurora.org> wrote:
> You might consider filing a bug (llvm.org/bugs) requesting a flag, but I
> don't know if the code owners want to expose such a flag.

I'm not sure that's a good idea as a raw access to that limit, as
there are no guarantees that it'll stay the same. But maybe a flag
turning some "aggressive" behaviour from SLP that would then change
that threshold (and maybe some others) would be a good flag to have, I
think.

This could maybe be a way to deprecate the BB vectorizer faster than
we would otherwise. But that would depend on all missing BB features
to be implemented in SLP.

An item in bugzilla seems appropriate.

cheers,
--renato