[PATCH] D148609: [InstCombine] Fix buggy `(mul X, Y)` -> `(shl X, Log2(Y))` transform PR62175

[Noah Goldstein via Phabricator via llvm-commits]

goldstein.w.n updated this revision to Diff 514707.
goldstein.w.n marked 2 inline comments as done.
goldstein.w.n added a comment.

RequireNoOverflow -> AssumeNonZero + just use `nuw` for `1 << shl`


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D148609/new/

https://reviews.llvm.org/D148609

Files:
  llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
  llvm/test/Transforms/InstCombine/mul-pow2.ll

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