[PATCH] D148841: [LV] Use SCEV for uniformity analysis across VF

[Nikita Popov via Phabricator via llvm-commits]

nikic added a comment.

What do you think about checking for udiv presence upfront? That seems to eliminate the compile-time impact entirely for me. Something like this:

  bool HasUDiv =
      SCEVExprContains(S, [](const SCEV *S) { return isa<SCEVUDivExpr>(S); });
  if (!HasUDiv)
    return false;


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D148841/new/

https://reviews.llvm.org/D148841