[PATCH] D149409: [ValueTracking] Handle bitcasts between vec-int-ptr in `isKnownNonZero`

[Noah Goldstein via Phabricator via llvm-commits]

goldstein.w.n added a comment.

In D149409#4304609 <https://reviews.llvm.org/D149409#4304609>, @nikic wrote:

> This needs to be much more careful about bitcasts between different lane counts. For your scalar to vector example it's fine, because if each vector element is non-zero then the scalar is also non-zero. The converse, however, is not true.

Done. Only do bitcast now if its from smaller scalar type -> larger scalar type.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D149409/new/

https://reviews.llvm.org/D149409