[PATCH] D32654: Fix AliasSetTracker bug

[Sanjoy Das via Phabricator via llvm-commits]

sanjoy added a comment.

Hi Piotr,

I've been looking at this bug too.  Unfortunately changing the cast to `dyn_cast_or_null` is not sufficient -- once the ValueHandle has been RAUW'ed to something else, you've lost the instruction, and so you have an incomplete list of `UnknownInsts`.


https://reviews.llvm.org/D32654