[PATCH] D19501: Add LoadStoreVectorizer pass

[Matt Arsenault via llvm-commits]

arsenm added a comment.

In http://reviews.llvm.org/D19501#411387, @mzolotukhin wrote:

> Why can't that be achieved by SLP vectorizer?
>
> Michael


The SLPVectorizer is concerned with forming all vectors. It will give up if it can't vectorize all downstream scalar operations fed by the loads. On GPUs that only have vector loads, and all other operations are scalar, this isn't desirable. At best the vectors are formed just to be scalarized during legalization.


http://reviews.llvm.org/D19501