PATCH: WIP SLPVectorize: Enable vectorization of allocas

[Chandler Carruth]

On Fri, Oct 25, 2013 at 12:13 AM, Nadav Rotem <nrotem at apple.com> wrote:

> Hi Tom,
>
> I am not sure that it is a good idea to generate ExtractElement
> instructions with dynamic indices at IR level.  I think that this kind of
> patterns should be matched during instruction selection.
>

Can you explain why?

extractelement and a vector load provide strictly more information to every
mid-level optimization and analysis pass. It makes SROA, inlining, and
other optimizations easier. What harm does it cause?
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20131025/5d24ca22/attachment.html>