[PATCH] D125747: [RISCV] Enable scalable vectorization by default for RVV

[Philip Reames via Phabricator via llvm-commits]

reames added a comment.

I doubt we want scalable vectorization enabled by default right now.  As Craig said, we need performance data to justify, but the impression I've gotten asking around is that this is not yet ready for prime time.

More than that though, we probably never want scalable vectorization for all configurations.  Having it enabled for default generic targets may make sense, but if we're targeting a particular CPU with full knowledge of vector lengths, classic fixed length is probably a better default.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D125747/new/

https://reviews.llvm.org/D125747