Re: [PATCH][1/n] Dissect vectorizer GROUP_* info

[Richard Sandiford <richard dot sandiford at arm dot com>]

Richard Biener <rguenther@suse.de> writes:
> This patch splits GROUP_* into DR_GROUP_* and REDUC_GROUP_* as a step
> towards sharing dataref and dependence analysis between vectorization
> analysis of different vector sizes (and then comparing costs and choosing
> the best one).
>
> The next patch will move the DR_GROUP_* fields to the DR_AUX vectorizer
> data structure which means that the DR group analysis could eventually
> be used from outside of the vectorizer.
>
> Bootstrap / regtest running on x86_64-unknown-linux-gnu.
>
> I'm considering applying this independently because of the churn it
> generates to make my life easier.
>
> Richard - I remember you talking about patches walking in the very
> same direction so please speak up if this disrupts your work and
> lets coordinate.

I don't think this patch clashes with what I was trying, so please
go ahead.  I was looking at patches to remove the globalness of
vinfo_for_stmt, mostly by avoiding it wherever possible and using
stmt_info instead of gimple *.  That's quite a lot of churn but leaves
very few vinfo_for_stmts left.

It also included an attempt to clean up how we handle getting the
vector versions of operands.

Thanks,
Richard