[PATCH] D155472: [DAG] Attempt shl narrowing in SimplifyDemandedBits

[Noah Goldstein via Phabricator via llvm-commits]

goldstein.w.n added a comment.

The actual shift truncation code looks good. Would prefer if the other changes where an independent commit, but if thats not feasible that shouldn't be a blocker.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D155472/new/

https://reviews.llvm.org/D155472