[PATCH] D67178: [SCEV] Use loop guard info when computing the max BE taken count in howFarToZero.

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

Instead of writing a C++ unittest, you should be able to use "opt -analyze -scalar-evolution" to test this.

Not sure I like the approach; rewriting the SCEV to a more complicated expression seems like it's stacking complexity.  But it might be the least code overall, I guess.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D67178/new/

https://reviews.llvm.org/D67178