[PATCH] D129852: [AArch64][SVE] Sink op into loop if it's used by PTEST and known to zero inactive lanes.

[Sander de Smalen via Phabricator via llvm-commits]

sdesmalen added a comment.

In D129852#3655364 <https://reviews.llvm.org/D129852#3655364>, @paulwalker-arm wrote:

> Can you provide a C/C++ example for when this is a problem? I'm not saying there's no problem to solve but rather that I'm starting to wonder if early decisions about removing reinterpret intrinsics are now starting to bite us.

https://godbolt.org/z/q6hKMsxKK

In this case it doesn't have anything to do with the reinterpret intrinsics, but rather the `ptrue` that gets hoisted out which is then no longer visible to (non-Global) ISel when it lowers the `ptest`.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D129852/new/

https://reviews.llvm.org/D129852