[LLVMdev] Aggregate store/load optimization

[deadal nix]

ping ?

2014-09-20 23:42 GMT-07:00 deadal nix <deadalnix at gmail.com>:

> Hi all,
>
> One area where LLVM suck pretty badly is aggregate store and loads. clang
> do not use them so there are not seen as important, and aren't handled
> nicely. Other frontends work around the issue as it is not handled properly
> and we ends up with some kind of chicken and egg issue.
>
> I recently proposed a diff to be able to optimize load from aggregate
> stores in GVN without great success. Interest was unclear to some and
> alteration of GVN was a concern to many.
>
> I'd like to improve the aggregate support. SROA is deaggregating from
> alloca. Would the same approach for other loads./store be preferable ? That
> would give a way to use the existing infrastructure while providing a good
> support for aggregate.
>
> If yes, what would be the right place and way to do this ?
>
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