[PATCH] D127447: [RISCV] Cost model for scalable reductions

[Philip Reames via Phabricator via llvm-commits]

reames planned changes to this revision.
reames added a comment.

In D127447#3571789 <https://reviews.llvm.org/D127447#3571789>, @reames wrote:

> For your model, I think we'd have to be conservative for scalable vectors and use the maximum possible VL.  That would fit naturally in the structure, but would strongly bias against using them.  Should I switch to that?

https://reviews.llvm.org/D127541 uses this approach for scatter/gather.  I'll let that converge, and then return to this with that model in mind.


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https://reviews.llvm.org/D127447