[PATCH] D105994: [SVE] Add folds for sign and zero extends of vscale

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

I assume the max-vscale attribute will usually be present?  In that case, checking it seems best.

(We might actually want to consider relaxing the LangRef rule; if we can easily determine whether the result fits into a given bitwidth, there isn't really any reason to make llvm.vscale return poison.)


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D105994/new/

https://reviews.llvm.org/D105994