[PATCH] D157408: [SCCP][PhaseOrdering] Mark Overdefined for loading from null

[Nikita Popov via Phabricator via llvm-commits]

nikic added a comment.

What is the original, non-artificial motivation for this?

This will not always be a positive change, because IPSCCP itself may become less effective (e.g. if one of the contributors to a phi is a load from null, we won't be able to ignore that incoming value anymore).


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D157408/new/

https://reviews.llvm.org/D157408