[PATCH] D153202: [LSR] Return nullptr from getExpr if the result isn't invertible.

[Nikita Popov via Phabricator via llvm-commits]

nikic added a comment.

Can we change normalizeForPostIncUse() to return nullptr if it does not round trip, so that all users are forced to handle this? Pretty sure this is still going to leave holes behind.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D153202/new/

https://reviews.llvm.org/D153202