[PATCH] D90529: Allow nonnull attribute to accept poison

[Johannes Doerfert via Phabricator via llvm-commits]

jdoerfert added a comment.

In D90529#2449341 <https://reviews.llvm.org/D90529#2449341>, @aqjune wrote:

> Should we have clarification about the semantics of align/nonnull bundle for the assume intrinsic?

Probably true, good catch. Why not make it the same as the attribute? So,

  ; A correct transformation
  call f(nonnull %p, nonnull noundef %q)
  ->
  llvm.assume [ "nonnull"(%p), "nonnull"(%q), "noundef"(%q)]
  ; where a `null` value for %p can be assumed to be a poison value and
  ; a `null` value for %q can be assumed to cause UB because `noundef` of
  ; poison is UB.


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https://reviews.llvm.org/D90529