[PATCH] D86894: [SVE] Disable INSERT_SUBVECTOR DAGCombine for scalable vectors

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

Given the way INSERT_SUBVECTOR is defined, I think this transform is essentially legal if you just make NumElts an ElementCount.

ElementCount already has `operator/(unsigned RHS)`; it would probably make sense to add a corresponding `ElementCount::divisibleBy(unsigned)` or something like that.


Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D86894