[PATCH] D104191: [LVI] Remove recursion from getValueForCondition (NFC)

[Carl Ritson via Phabricator via llvm-commits]

critson created this revision.
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Convert getValueForCondition to a worklist model instead of using
recursion.

In pathological cases getValueForCondition recurses heavily.
Stack frames are quite expensive on x86-64, and some operating
systems (e.g. Windows) have relatively low stack size limits.
Using a worklist avoids potential failures from stack overflow.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D104191

Files:
  llvm/lib/Analysis/LazyValueInfo.cpp

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