[PATCH] D142271: [ValueTracking] Add KnownBits patterns `xor(x, x - 1)` and `and(x, -x)` for knowing upper bits to be zero

[Noah Goldstein via Phabricator via llvm-commits]

goldstein.w.n added a comment.

In D142271#4136983 <https://reviews.llvm.org/D142271#4136983>, @nikic wrote:

> Any reason not to commit the first three patches in this stack yet?

Pushed first three, but the following four not be forgotten? They have been sitting around for a while.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D142271/new/

https://reviews.llvm.org/D142271