[PATCH] D108190: [Attributor][FIX] Recursion via memory needs to be tracked explicitly

[Johannes Doerfert via Phabricator via llvm-commits]

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Recursion can happen when we see a PHI use the second time or when we
look at a store value operand use again. We already visited the
potential copies and doing so again will just cause endless looping.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D108190

Files:
  llvm/lib/Transforms/IPO/Attributor.cpp
  llvm/test/Transforms/Attributor/value-simplify-pointer-info.ll

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